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SubjectRe: Linux 4.2.4
diff --git a/Documentation/HOWTO b/Documentation/HOWTO
index 93aa8604630e..21152d397b88 100644
--- a/Documentation/HOWTO
+++ b/Documentation/HOWTO
@@ -218,16 +218,16 @@ The development process
Linux kernel development process currently consists of a few different
main kernel "branches" and lots of different subsystem-specific kernel
branches. These different branches are:
- - main 3.x kernel tree
- - 3.x.y -stable kernel tree
- - 3.x -git kernel patches
+ - main 4.x kernel tree
+ - 4.x.y -stable kernel tree
+ - 4.x -git kernel patches
- subsystem specific kernel trees and patches
- - the 3.x -next kernel tree for integration tests
+ - the 4.x -next kernel tree for integration tests

-3.x kernel tree
+4.x kernel tree
-----------------
-3.x kernels are maintained by Linus Torvalds, and can be found on
-kernel.org in the pub/linux/kernel/v3.x/ directory. Its development
+4.x kernels are maintained by Linus Torvalds, and can be found on
+kernel.org in the pub/linux/kernel/v4.x/ directory. Its development
process is as follows:
- As soon as a new kernel is released a two weeks window is open,
during this period of time maintainers can submit big diffs to
@@ -262,20 +262,20 @@ mailing list about kernel releases:
released according to perceived bug status, not according to a
preconceived timeline."

-3.x.y -stable kernel tree
+4.x.y -stable kernel tree
---------------------------
Kernels with 3-part versions are -stable kernels. They contain
relatively small and critical fixes for security problems or significant
-regressions discovered in a given 3.x kernel.
+regressions discovered in a given 4.x kernel.

This is the recommended branch for users who want the most recent stable
kernel and are not interested in helping test development/experimental
versions.

-If no 3.x.y kernel is available, then the highest numbered 3.x
+If no 4.x.y kernel is available, then the highest numbered 4.x
kernel is the current stable kernel.

-3.x.y are maintained by the "stable" team <stable@vger.kernel.org>, and
+4.x.y are maintained by the "stable" team <stable@vger.kernel.org>, and
are released as needs dictate. The normal release period is approximately
two weeks, but it can be longer if there are no pressing problems. A
security-related problem, instead, can cause a release to happen almost
@@ -285,7 +285,7 @@ The file Documentation/stable_kernel_rules.txt in the kernel tree
documents what kinds of changes are acceptable for the -stable tree, and
how the release process works.

-3.x -git patches
+4.x -git patches
------------------
These are daily snapshots of Linus' kernel tree which are managed in a
git repository (hence the name.) These patches are usually released
@@ -317,9 +317,9 @@ revisions to it, and maintainers can mark patches as under review,
accepted, or rejected. Most of these patchwork sites are listed at
http://patchwork.kernel.org/.

-3.x -next kernel tree for integration tests
+4.x -next kernel tree for integration tests
---------------------------------------------
-Before updates from subsystem trees are merged into the mainline 3.x
+Before updates from subsystem trees are merged into the mainline 4.x
tree, they need to be integration-tested. For this purpose, a special
testing repository exists into which virtually all subsystem trees are
pulled on an almost daily basis:
diff --git a/Makefile b/Makefile
index a6edbb11a69a..a952801a6cd5 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 4
PATCHLEVEL = 2
-SUBLEVEL = 3
+SUBLEVEL = 4
EXTRAVERSION =
NAME = Hurr durr I'ma sheep

diff --git a/arch/arc/plat-axs10x/axs10x.c b/arch/arc/plat-axs10x/axs10x.c
index e7769c3ab5f2..ac79491ee2c0 100644
--- a/arch/arc/plat-axs10x/axs10x.c
+++ b/arch/arc/plat-axs10x/axs10x.c
@@ -402,6 +402,8 @@ static void __init axs103_early_init(void)
unsigned int num_cores = (read_aux_reg(ARC_REG_MCIP_BCR) >> 16) & 0x3F;
if (num_cores > 2)
arc_set_core_freq(50 * 1000000);
+ else if (num_cores == 2)
+ arc_set_core_freq(75 * 1000000);
#endif

switch (arc_get_core_freq()/1000000) {
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 7451b447cc2d..2c2b28ee4811 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -54,6 +54,14 @@ AS += -EL
LD += -EL
endif

+#
+# The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and
+# later may result in code being generated that handles signed short and signed
+# char struct members incorrectly. So disable it.
+# (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932)
+#
+KBUILD_CFLAGS += $(call cc-option,-fno-ipa-sra)
+
# This selects which instruction set is used.
# Note that GCC does not numerically define an architecture version
# macro, but instead defines a whole series of macros which makes
diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi
index 534f27ceb10b..fa8107dec109 100644
--- a/arch/arm/boot/dts/exynos5420.dtsi
+++ b/arch/arm/boot/dts/exynos5420.dtsi
@@ -1118,7 +1118,7 @@
interrupt-parent = <&combiner>;
interrupts = <3 0>;
clock-names = "sysmmu", "master";
- clocks = <&clock CLK_SMMU_FIMD1M0>, <&clock CLK_FIMD1>;
+ clocks = <&clock CLK_SMMU_FIMD1M1>, <&clock CLK_FIMD1>;
power-domains = <&disp_pd>;
#iommu-cells = <0>;
};
diff --git a/arch/arm/boot/dts/imx6qdl-rex.dtsi b/arch/arm/boot/dts/imx6qdl-rex.dtsi
index 3373fd958e95..a50356243888 100644
--- a/arch/arm/boot/dts/imx6qdl-rex.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-rex.dtsi
@@ -35,7 +35,6 @@
compatible = "regulator-fixed";
reg = <1>;
pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_usbh1>;
regulator-name = "usbh1_vbus";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
@@ -47,7 +46,6 @@
compatible = "regulator-fixed";
reg = <2>;
pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_usbotg>;
regulator-name = "usb_otg_vbus";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
diff --git a/arch/arm/boot/dts/omap3-beagle.dts b/arch/arm/boot/dts/omap3-beagle.dts
index a5474113cd50..67659a0ed13e 100644
--- a/arch/arm/boot/dts/omap3-beagle.dts
+++ b/arch/arm/boot/dts/omap3-beagle.dts
@@ -202,7 +202,7 @@

tfp410_pins: pinmux_tfp410_pins {
pinctrl-single,pins = <
- 0x194 (PIN_OUTPUT | MUX_MODE4) /* hdq_sio.gpio_170 */
+ 0x196 (PIN_OUTPUT | MUX_MODE4) /* hdq_sio.gpio_170 */
>;
};

diff --git a/arch/arm/boot/dts/omap5-uevm.dts b/arch/arm/boot/dts/omap5-uevm.dts
index 275618f19a43..5771a149ce4a 100644
--- a/arch/arm/boot/dts/omap5-uevm.dts
+++ b/arch/arm/boot/dts/omap5-uevm.dts
@@ -174,8 +174,8 @@

i2c5_pins: pinmux_i2c5_pins {
pinctrl-single,pins = <
- 0x184 (PIN_INPUT | MUX_MODE0) /* i2c5_scl */
- 0x186 (PIN_INPUT | MUX_MODE0) /* i2c5_sda */
+ 0x186 (PIN_INPUT | MUX_MODE0) /* i2c5_scl */
+ 0x188 (PIN_INPUT | MUX_MODE0) /* i2c5_sda */
>;
};

diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
index 6a63f30c9a69..f5f384c04335 100644
--- a/arch/arm/boot/dts/sun7i-a20.dtsi
+++ b/arch/arm/boot/dts/sun7i-a20.dtsi
@@ -107,7 +107,7 @@
720000 1200000
528000 1100000
312000 1000000
- 144000 900000
+ 144000 1000000
>;
#cooling-cells = <2>;
cooling-min-level = <0>;
diff --git a/arch/arm/kernel/kgdb.c b/arch/arm/kernel/kgdb.c
index a6ad93c9bce3..fd9eefce0a7b 100644
--- a/arch/arm/kernel/kgdb.c
+++ b/arch/arm/kernel/kgdb.c
@@ -259,15 +259,17 @@ int kgdb_arch_set_breakpoint(struct kgdb_bkpt *bpt)
if (err)
return err;

- patch_text((void *)bpt->bpt_addr,
- *(unsigned int *)arch_kgdb_ops.gdb_bpt_instr);
+ /* Machine is already stopped, so we can use __patch_text() directly */
+ __patch_text((void *)bpt->bpt_addr,
+ *(unsigned int *)arch_kgdb_ops.gdb_bpt_instr);

return err;
}

int kgdb_arch_remove_breakpoint(struct kgdb_bkpt *bpt)
{
- patch_text((void *)bpt->bpt_addr, *(unsigned int *)bpt->saved_instr);
+ /* Machine is already stopped, so we can use __patch_text() directly */
+ __patch_text((void *)bpt->bpt_addr, *(unsigned int *)bpt->saved_instr);

return 0;
}
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index 54272e0be713..7d5379c1c443 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -795,8 +795,10 @@ static int of_pmu_irq_cfg(struct arm_pmu *pmu)

/* Don't bother with PPIs; they're already affine */
irq = platform_get_irq(pdev, 0);
- if (irq >= 0 && irq_is_percpu(irq))
+ if (irq >= 0 && irq_is_percpu(irq)) {
+ cpumask_setall(&pmu->supported_cpus);
return 0;
+ }

irqs = kcalloc(pdev->num_resources, sizeof(*irqs), GFP_KERNEL);
if (!irqs)
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index 423663e23791..586eef26203d 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -343,12 +343,17 @@ setup_return(struct pt_regs *regs, struct ksignal *ksig,
*/
thumb = handler & 1;

-#if __LINUX_ARM_ARCH__ >= 7
+#if __LINUX_ARM_ARCH__ >= 6
/*
- * Clear the If-Then Thumb-2 execution state
- * ARM spec requires this to be all 000s in ARM mode
- * Snapdragon S4/Krait misbehaves on a Thumb=>ARM
- * signal transition without this.
+ * Clear the If-Then Thumb-2 execution state. ARM spec
+ * requires this to be all 000s in ARM mode. Snapdragon
+ * S4/Krait misbehaves on a Thumb=>ARM signal transition
+ * without this.
+ *
+ * We must do this whenever we are running on a Thumb-2
+ * capable CPU, which includes ARMv6T2. However, we elect
+ * to do this whenever we're on an ARMv6 or later CPU for
+ * simplicity.
*/
cpsr &= ~PSR_IT_MASK;
#endif
diff --git a/arch/arm/kvm/interrupts_head.S b/arch/arm/kvm/interrupts_head.S
index 702740d37465..51a59504bef4 100644
--- a/arch/arm/kvm/interrupts_head.S
+++ b/arch/arm/kvm/interrupts_head.S
@@ -515,8 +515,7 @@ ARM_BE8(rev r6, r6 )

mrc p15, 0, r2, c14, c3, 1 @ CNTV_CTL
str r2, [vcpu, #VCPU_TIMER_CNTV_CTL]
- bic r2, #1 @ Clear ENABLE
- mcr p15, 0, r2, c14, c3, 1 @ CNTV_CTL
+
isb

mrrc p15, 3, rr_lo_hi(r2, r3), c14 @ CNTV_CVAL
@@ -529,6 +528,9 @@ ARM_BE8(rev r6, r6 )
mcrr p15, 4, r2, r2, c14 @ CNTVOFF

1:
+ mov r2, #0 @ Clear ENABLE
+ mcr p15, 0, r2, c14, c3, 1 @ CNTV_CTL
+
@ Allow physical timer/counter access for the host
mrc p15, 4, r2, c14, c1, 0 @ CNTHCTL
orr r2, r2, #(CNTHCTL_PL1PCEN | CNTHCTL_PL1PCTEN)
diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c
index 7b4201294187..6984342da13d 100644
--- a/arch/arm/kvm/mmu.c
+++ b/arch/arm/kvm/mmu.c
@@ -1792,8 +1792,10 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
if (vma->vm_flags & VM_PFNMAP) {
gpa_t gpa = mem->guest_phys_addr +
(vm_start - mem->userspace_addr);
- phys_addr_t pa = (vma->vm_pgoff << PAGE_SHIFT) +
- vm_start - vma->vm_start;
+ phys_addr_t pa;
+
+ pa = (phys_addr_t)vma->vm_pgoff << PAGE_SHIFT;
+ pa += vm_start - vma->vm_start;

/* IO region dirty page logging not allowed */
if (memslot->flags & KVM_MEM_LOG_DIRTY_PAGES)
diff --git a/arch/arm/mach-exynos/mcpm-exynos.c b/arch/arm/mach-exynos/mcpm-exynos.c
index 9bdf54795f05..56978199c479 100644
--- a/arch/arm/mach-exynos/mcpm-exynos.c
+++ b/arch/arm/mach-exynos/mcpm-exynos.c
@@ -20,6 +20,7 @@
#include <asm/cputype.h>
#include <asm/cp15.h>
#include <asm/mcpm.h>
+#include <asm/smp_plat.h>

#include "regs-pmu.h"
#include "common.h"
@@ -70,7 +71,31 @@ static int exynos_cpu_powerup(unsigned int cpu, unsigned int cluster)
cluster >= EXYNOS5420_NR_CLUSTERS)
return -EINVAL;

- exynos_cpu_power_up(cpunr);
+ if (!exynos_cpu_power_state(cpunr)) {
+ exynos_cpu_power_up(cpunr);
+
+ /*
+ * This assumes the cluster number of the big cores(Cortex A15)
+ * is 0 and the Little cores(Cortex A7) is 1.
+ * When the system was booted from the Little core,
+ * they should be reset during power up cpu.
+ */
+ if (cluster &&
+ cluster == MPIDR_AFFINITY_LEVEL(cpu_logical_map(0), 1)) {
+ /*
+ * Before we reset the Little cores, we should wait
+ * the SPARE2 register is set to 1 because the init
+ * codes of the iROM will set the register after
+ * initialization.
+ */
+ while (!pmu_raw_readl(S5P_PMU_SPARE2))
+ udelay(10);
+
+ pmu_raw_writel(EXYNOS5420_KFC_CORE_RESET(cpu),
+ EXYNOS_SWRESET);
+ }
+ }
+
return 0;
}

diff --git a/arch/arm/mach-exynos/regs-pmu.h b/arch/arm/mach-exynos/regs-pmu.h
index b7614333d296..fba9068ed260 100644
--- a/arch/arm/mach-exynos/regs-pmu.h
+++ b/arch/arm/mach-exynos/regs-pmu.h
@@ -513,6 +513,12 @@ static inline unsigned int exynos_pmu_cpunr(unsigned int mpidr)
#define SPREAD_ENABLE 0xF
#define SPREAD_USE_STANDWFI 0xF

+#define EXYNOS5420_KFC_CORE_RESET0 BIT(8)
+#define EXYNOS5420_KFC_ETM_RESET0 BIT(20)
+
+#define EXYNOS5420_KFC_CORE_RESET(_nr) \
+ ((EXYNOS5420_KFC_CORE_RESET0 | EXYNOS5420_KFC_ETM_RESET0) << (_nr))
+
#define EXYNOS5420_BB_CON1 0x0784
#define EXYNOS5420_BB_SEL_EN BIT(31)
#define EXYNOS5420_BB_PMOS_EN BIT(7)
diff --git a/arch/arm/plat-pxa/ssp.c b/arch/arm/plat-pxa/ssp.c
index ad9529cc4203..daa1a65f2eb7 100644
--- a/arch/arm/plat-pxa/ssp.c
+++ b/arch/arm/plat-pxa/ssp.c
@@ -107,7 +107,6 @@ static const struct of_device_id pxa_ssp_of_ids[] = {
{ .compatible = "mvrl,pxa168-ssp", .data = (void *) PXA168_SSP },
{ .compatible = "mrvl,pxa910-ssp", .data = (void *) PXA910_SSP },
{ .compatible = "mrvl,ce4100-ssp", .data = (void *) CE4100_SSP },
- { .compatible = "mrvl,lpss-ssp", .data = (void *) LPSS_SSP },
{ },
};
MODULE_DEVICE_TABLE(of, pxa_ssp_of_ids);
diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c
index e8ca6eaedd02..13671a9cf016 100644
--- a/arch/arm64/kernel/efi.c
+++ b/arch/arm64/kernel/efi.c
@@ -258,7 +258,8 @@ static bool __init efi_virtmap_init(void)
*/
if (!is_normal_ram(md))
prot = __pgprot(PROT_DEVICE_nGnRE);
- else if (md->type == EFI_RUNTIME_SERVICES_CODE)
+ else if (md->type == EFI_RUNTIME_SERVICES_CODE ||
+ !PAGE_ALIGNED(md->phys_addr))
prot = PAGE_KERNEL_EXEC;
else
prot = PAGE_KERNEL;
diff --git a/arch/arm64/kernel/entry-ftrace.S b/arch/arm64/kernel/entry-ftrace.S
index 08cafc518b9a..0f03a8fe2314 100644
--- a/arch/arm64/kernel/entry-ftrace.S
+++ b/arch/arm64/kernel/entry-ftrace.S
@@ -178,6 +178,24 @@ ENTRY(ftrace_stub)
ENDPROC(ftrace_stub)

#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+ /* save return value regs*/
+ .macro save_return_regs
+ sub sp, sp, #64
+ stp x0, x1, [sp]
+ stp x2, x3, [sp, #16]
+ stp x4, x5, [sp, #32]
+ stp x6, x7, [sp, #48]
+ .endm
+
+ /* restore return value regs*/
+ .macro restore_return_regs
+ ldp x0, x1, [sp]
+ ldp x2, x3, [sp, #16]
+ ldp x4, x5, [sp, #32]
+ ldp x6, x7, [sp, #48]
+ add sp, sp, #64
+ .endm
+
/*
* void ftrace_graph_caller(void)
*
@@ -204,11 +222,11 @@ ENDPROC(ftrace_graph_caller)
* only when CONFIG_HAVE_FUNCTION_GRAPH_FP_TEST is enabled.
*/
ENTRY(return_to_handler)
- str x0, [sp, #-16]!
+ save_return_regs
mov x0, x29 // parent's fp
bl ftrace_return_to_handler// addr = ftrace_return_to_hander(fp);
mov x30, x0 // restore the original return address
- ldr x0, [sp], #16
+ restore_return_regs
ret
END(return_to_handler)
#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
index 94d98cd1aad8..27c3e6fd24c1 100644
--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -278,6 +278,7 @@ retry:
* starvation.
*/
mm_flags &= ~FAULT_FLAG_ALLOW_RETRY;
+ mm_flags |= FAULT_FLAG_TRIED;
goto retry;
}
}
diff --git a/arch/m68k/include/asm/linkage.h b/arch/m68k/include/asm/linkage.h
index 5a822bb790f7..066e74f666ae 100644
--- a/arch/m68k/include/asm/linkage.h
+++ b/arch/m68k/include/asm/linkage.h
@@ -4,4 +4,34 @@
#define __ALIGN .align 4
#define __ALIGN_STR ".align 4"

+/*
+ * Make sure the compiler doesn't do anything stupid with the
+ * arguments on the stack - they are owned by the *caller*, not
+ * the callee. This just fools gcc into not spilling into them,
+ * and keeps it from doing tailcall recursion and/or using the
+ * stack slots for temporaries, since they are live and "used"
+ * all the way to the end of the function.
+ */
+#define asmlinkage_protect(n, ret, args...) \
+ __asmlinkage_protect##n(ret, ##args)
+#define __asmlinkage_protect_n(ret, args...) \
+ __asm__ __volatile__ ("" : "=r" (ret) : "0" (ret), ##args)
+#define __asmlinkage_protect0(ret) \
+ __asmlinkage_protect_n(ret)
+#define __asmlinkage_protect1(ret, arg1) \
+ __asmlinkage_protect_n(ret, "m" (arg1))
+#define __asmlinkage_protect2(ret, arg1, arg2) \
+ __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2))
+#define __asmlinkage_protect3(ret, arg1, arg2, arg3) \
+ __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3))
+#define __asmlinkage_protect4(ret, arg1, arg2, arg3, arg4) \
+ __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \
+ "m" (arg4))
+#define __asmlinkage_protect5(ret, arg1, arg2, arg3, arg4, arg5) \
+ __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \
+ "m" (arg4), "m" (arg5))
+#define __asmlinkage_protect6(ret, arg1, arg2, arg3, arg4, arg5, arg6) \
+ __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \
+ "m" (arg4), "m" (arg5), "m" (arg6))
+
#endif
diff --git a/arch/mips/kernel/cps-vec.S b/arch/mips/kernel/cps-vec.S
index 9f71c06aebf6..209ded16806b 100644
--- a/arch/mips/kernel/cps-vec.S
+++ b/arch/mips/kernel/cps-vec.S
@@ -39,6 +39,7 @@
mfc0 \dest, CP0_CONFIG, 3
andi \dest, \dest, MIPS_CONF3_MT
beqz \dest, \nomt
+ nop
.endm

.section .text.cps-vec
@@ -223,10 +224,9 @@ LEAF(excep_ejtag)
END(excep_ejtag)

LEAF(mips_cps_core_init)
-#ifdef CONFIG_MIPS_MT
+#ifdef CONFIG_MIPS_MT_SMP
/* Check that the core implements the MT ASE */
has_mt t0, 3f
- nop

.set push
.set mips64r2
@@ -310,8 +310,9 @@ LEAF(mips_cps_boot_vpes)
PTR_ADDU t0, t0, t1

/* Calculate this VPEs ID. If the core doesn't support MT use 0 */
+ li t9, 0
+#ifdef CONFIG_MIPS_MT_SMP
has_mt ta2, 1f
- li t9, 0

/* Find the number of VPEs present in the core */
mfc0 t1, CP0_MVPCONF0
@@ -330,6 +331,7 @@ LEAF(mips_cps_boot_vpes)
/* Retrieve the VPE ID from EBase.CPUNum */
mfc0 t9, $15, 1
and t9, t9, t1
+#endif

1: /* Calculate a pointer to this VPEs struct vpe_boot_config */
li t1, VPEBOOTCFG_SIZE
@@ -337,7 +339,7 @@ LEAF(mips_cps_boot_vpes)
PTR_L ta3, COREBOOTCFG_VPECONFIG(t0)
PTR_ADDU v0, v0, ta3

-#ifdef CONFIG_MIPS_MT
+#ifdef CONFIG_MIPS_MT_SMP

/* If the core doesn't support MT then return */
bnez ta2, 1f
@@ -451,7 +453,7 @@ LEAF(mips_cps_boot_vpes)

2: .set pop

-#endif /* CONFIG_MIPS_MT */
+#endif /* CONFIG_MIPS_MT_SMP */

/* Return */
jr ra
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 008b3378653a..4ceac5cdd6b8 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -338,7 +338,7 @@ static void __init bootmem_init(void)
if (end <= reserved_end)
continue;
#ifdef CONFIG_BLK_DEV_INITRD
- /* mapstart should be after initrd_end */
+ /* Skip zones before initrd and initrd itself */
if (initrd_end && end <= (unsigned long)PFN_UP(__pa(initrd_end)))
continue;
#endif
@@ -371,6 +371,14 @@ static void __init bootmem_init(void)
max_low_pfn = PFN_DOWN(HIGHMEM_START);
}

+#ifdef CONFIG_BLK_DEV_INITRD
+ /*
+ * mapstart should be after initrd_end
+ */
+ if (initrd_end)
+ mapstart = max(mapstart, (unsigned long)PFN_UP(__pa(initrd_end)));
+#endif
+
/*
* Initialize the boot-time allocator with low memory only.
*/
diff --git a/arch/mips/loongson64/common/env.c b/arch/mips/loongson64/common/env.c
index f6c44dd332e2..d6d07ad56180 100644
--- a/arch/mips/loongson64/common/env.c
+++ b/arch/mips/loongson64/common/env.c
@@ -64,6 +64,9 @@ void __init prom_init_env(void)
}
if (memsize == 0)
memsize = 256;
+
+ loongson_sysconf.nr_uarts = 1;
+
pr_info("memsize=%u, highmemsize=%u\n", memsize, highmemsize);
#else
struct boot_params *boot_p;
diff --git a/arch/mips/mm/dma-default.c b/arch/mips/mm/dma-default.c
index eeaf0245c3b1..815892ed3fe8 100644
--- a/arch/mips/mm/dma-default.c
+++ b/arch/mips/mm/dma-default.c
@@ -100,7 +100,7 @@ static gfp_t massage_gfp_flags(const struct device *dev, gfp_t gfp)
else
#endif
#if defined(CONFIG_ZONE_DMA) && !defined(CONFIG_ZONE_DMA32)
- if (dev->coherent_dma_mask < DMA_BIT_MASK(64))
+ if (dev->coherent_dma_mask < DMA_BIT_MASK(sizeof(phys_addr_t) * 8))
dma_flag = __GFP_DMA;
else
#endif
diff --git a/arch/mips/net/bpf_jit_asm.S b/arch/mips/net/bpf_jit_asm.S
index e92726099be0..dabf4179cd7e 100644
--- a/arch/mips/net/bpf_jit_asm.S
+++ b/arch/mips/net/bpf_jit_asm.S
@@ -64,8 +64,20 @@ sk_load_word_positive:
PTR_ADDU t1, $r_skb_data, offset
lw $r_A, 0(t1)
#ifdef CONFIG_CPU_LITTLE_ENDIAN
+# if defined(__mips_isa_rev) && (__mips_isa_rev >= 2)
wsbh t0, $r_A
rotr $r_A, t0, 16
+# else
+ sll t0, $r_A, 24
+ srl t1, $r_A, 24
+ srl t2, $r_A, 8
+ or t0, t0, t1
+ andi t2, t2, 0xff00
+ andi t1, $r_A, 0xff00
+ or t0, t0, t2
+ sll t1, t1, 8
+ or $r_A, t0, t1
+# endif
#endif
jr $r_ra
move $r_ret, zero
@@ -80,8 +92,16 @@ sk_load_half_positive:
PTR_ADDU t1, $r_skb_data, offset
lh $r_A, 0(t1)
#ifdef CONFIG_CPU_LITTLE_ENDIAN
+# if defined(__mips_isa_rev) && (__mips_isa_rev >= 2)
wsbh t0, $r_A
seh $r_A, t0
+# else
+ sll t0, $r_A, 24
+ andi t1, $r_A, 0xff00
+ sra t0, t0, 16
+ srl t1, t1, 8
+ or $r_A, t0, t1
+# endif
#endif
jr $r_ra
move $r_ret, zero
@@ -148,23 +168,47 @@ sk_load_byte_positive:
NESTED(bpf_slow_path_word, (6 * SZREG), $r_sp)
bpf_slow_path_common(4)
#ifdef CONFIG_CPU_LITTLE_ENDIAN
+# if defined(__mips_isa_rev) && (__mips_isa_rev >= 2)
wsbh t0, $r_s0
jr $r_ra
rotr $r_A, t0, 16
-#endif
+# else
+ sll t0, $r_s0, 24
+ srl t1, $r_s0, 24
+ srl t2, $r_s0, 8
+ or t0, t0, t1
+ andi t2, t2, 0xff00
+ andi t1, $r_s0, 0xff00
+ or t0, t0, t2
+ sll t1, t1, 8
+ jr $r_ra
+ or $r_A, t0, t1
+# endif
+#else
jr $r_ra
- move $r_A, $r_s0
+ move $r_A, $r_s0
+#endif

END(bpf_slow_path_word)

NESTED(bpf_slow_path_half, (6 * SZREG), $r_sp)
bpf_slow_path_common(2)
#ifdef CONFIG_CPU_LITTLE_ENDIAN
+# if defined(__mips_isa_rev) && (__mips_isa_rev >= 2)
jr $r_ra
wsbh $r_A, $r_s0
-#endif
+# else
+ sll t0, $r_s0, 8
+ andi t1, $r_s0, 0xff00
+ andi t0, t0, 0xff00
+ srl t1, t1, 8
+ jr $r_ra
+ or $r_A, t0, t1
+# endif
+#else
jr $r_ra
move $r_A, $r_s0
+#endif

END(bpf_slow_path_half)

diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index 05ea8fc7f829..4816fe2fa857 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -827,12 +827,15 @@ int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu)
unsigned long size = kvmppc_get_gpr(vcpu, 4);
unsigned long addr = kvmppc_get_gpr(vcpu, 5);
u64 buf;
+ int srcu_idx;
int ret;

if (!is_power_of_2(size) || (size > sizeof(buf)))
return H_TOO_HARD;

+ srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, addr, size, &buf);
+ srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
if (ret != 0)
return H_TOO_HARD;

@@ -867,6 +870,7 @@ int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu)
unsigned long addr = kvmppc_get_gpr(vcpu, 5);
unsigned long val = kvmppc_get_gpr(vcpu, 6);
u64 buf;
+ int srcu_idx;
int ret;

switch (size) {
@@ -890,7 +894,9 @@ int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu)
return H_TOO_HARD;
}

+ srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, addr, size, &buf);
+ srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
if (ret != 0)
return H_TOO_HARD;

diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 68d067ad4222..a9f753fb73a8 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -2178,7 +2178,7 @@ static int kvmppc_run_vcpu(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
vc->runner = vcpu;
if (n_ceded == vc->n_runnable) {
kvmppc_vcore_blocked(vc);
- } else if (should_resched()) {
+ } else if (need_resched()) {
vc->vcore_state = VCORE_PREEMPT;
/* Let something else run */
cond_resched_lock(&vc->lock);
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
index 76408cf0ad04..437f64350847 100644
--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
@@ -1171,6 +1171,7 @@ mc_cont:
bl kvmhv_accumulate_time
#endif

+ mr r3, r12
/* Increment exit count, poke other threads to exit */
bl kvmhv_commence_exit
nop
diff --git a/arch/powerpc/platforms/pasemi/msi.c b/arch/powerpc/platforms/pasemi/msi.c
index 27f2b187a91b..ff1bb4b690b9 100644
--- a/arch/powerpc/platforms/pasemi/msi.c
+++ b/arch/powerpc/platforms/pasemi/msi.c
@@ -63,6 +63,7 @@ static struct irq_chip mpic_pasemi_msi_chip = {
static void pasemi_msi_teardown_msi_irqs(struct pci_dev *pdev)
{
struct msi_desc *entry;
+ irq_hw_number_t hwirq;

pr_debug("pasemi_msi_teardown_msi_irqs, pdev %p\n", pdev);

@@ -70,10 +71,10 @@ static void pasemi_msi_teardown_msi_irqs(struct pci_dev *pdev)
if (entry->irq == NO_IRQ)
continue;

+ hwirq = virq_to_hw(entry->irq);
irq_set_msi_desc(entry->irq, NULL);
- msi_bitmap_free_hwirqs(&msi_mpic->msi_bitmap,
- virq_to_hw(entry->irq), ALLOC_CHUNK);
irq_dispose_mapping(entry->irq);
+ msi_bitmap_free_hwirqs(&msi_mpic->msi_bitmap, hwirq, ALLOC_CHUNK);
}

return;
diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c
index 765d8ed558d0..fd16f86e54a9 100644
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -99,6 +99,7 @@ void pnv_teardown_msi_irqs(struct pci_dev *pdev)
struct pci_controller *hose = pci_bus_to_host(pdev->bus);
struct pnv_phb *phb = hose->private_data;
struct msi_desc *entry;
+ irq_hw_number_t hwirq;

if (WARN_ON(!phb))
return;
@@ -106,10 +107,10 @@ void pnv_teardown_msi_irqs(struct pci_dev *pdev)
list_for_each_entry(entry, &pdev->msi_list, list) {
if (entry->irq == NO_IRQ)
continue;
+ hwirq = virq_to_hw(entry->irq);
irq_set_msi_desc(entry->irq, NULL);
- msi_bitmap_free_hwirqs(&phb->msi_bmp,
- virq_to_hw(entry->irq) - phb->msi_base, 1);
irq_dispose_mapping(entry->irq);
+ msi_bitmap_free_hwirqs(&phb->msi_bmp, hwirq - phb->msi_base, 1);
}
}
#endif /* CONFIG_PCI_MSI */
diff --git a/arch/powerpc/sysdev/fsl_msi.c b/arch/powerpc/sysdev/fsl_msi.c
index 5236e5427c38..691e8e517b3e 100644
--- a/arch/powerpc/sysdev/fsl_msi.c
+++ b/arch/powerpc/sysdev/fsl_msi.c
@@ -128,15 +128,16 @@ static void fsl_teardown_msi_irqs(struct pci_dev *pdev)
{
struct msi_desc *entry;
struct fsl_msi *msi_data;
+ irq_hw_number_t hwirq;

list_for_each_entry(entry, &pdev->msi_list, list) {
if (entry->irq == NO_IRQ)
continue;
+ hwirq = virq_to_hw(entry->irq);
msi_data = irq_get_chip_data(entry->irq);
irq_set_msi_desc(entry->irq, NULL);
- msi_bitmap_free_hwirqs(&msi_data->bitmap,
- virq_to_hw(entry->irq), 1);
irq_dispose_mapping(entry->irq);
+ msi_bitmap_free_hwirqs(&msi_data->bitmap, hwirq, 1);
}

return;
diff --git a/arch/powerpc/sysdev/mpic_u3msi.c b/arch/powerpc/sysdev/mpic_u3msi.c
index fc46ef3b816e..4c3165fa521c 100644
--- a/arch/powerpc/sysdev/mpic_u3msi.c
+++ b/arch/powerpc/sysdev/mpic_u3msi.c
@@ -107,15 +107,16 @@ static u64 find_u4_magic_addr(struct pci_dev *pdev, unsigned int hwirq)
static void u3msi_teardown_msi_irqs(struct pci_dev *pdev)
{
struct msi_desc *entry;
+ irq_hw_number_t hwirq;

list_for_each_entry(entry, &pdev->msi_list, list) {
if (entry->irq == NO_IRQ)
continue;

+ hwirq = virq_to_hw(entry->irq);
irq_set_msi_desc(entry->irq, NULL);
- msi_bitmap_free_hwirqs(&msi_mpic->msi_bitmap,
- virq_to_hw(entry->irq), 1);
irq_dispose_mapping(entry->irq);
+ msi_bitmap_free_hwirqs(&msi_mpic->msi_bitmap, hwirq, 1);
}

return;
diff --git a/arch/powerpc/sysdev/ppc4xx_msi.c b/arch/powerpc/sysdev/ppc4xx_msi.c
index 6eb21f2ea585..060f23775255 100644
--- a/arch/powerpc/sysdev/ppc4xx_msi.c
+++ b/arch/powerpc/sysdev/ppc4xx_msi.c
@@ -124,16 +124,17 @@ void ppc4xx_teardown_msi_irqs(struct pci_dev *dev)
{
struct msi_desc *entry;
struct ppc4xx_msi *msi_data = &ppc4xx_msi;
+ irq_hw_number_t hwirq;

dev_dbg(&dev->dev, "PCIE-MSI: tearing down msi irqs\n");

list_for_each_entry(entry, &dev->msi_list, list) {
if (entry->irq == NO_IRQ)
continue;
+ hwirq = virq_to_hw(entry->irq);
irq_set_msi_desc(entry->irq, NULL);
- msi_bitmap_free_hwirqs(&msi_data->bitmap,
- virq_to_hw(entry->irq), 1);
irq_dispose_mapping(entry->irq);
+ msi_bitmap_free_hwirqs(&msi_data->bitmap, hwirq, 1);
}
}

diff --git a/arch/s390/boot/compressed/Makefile b/arch/s390/boot/compressed/Makefile
index d4788111c161..fac6ac9790fa 100644
--- a/arch/s390/boot/compressed/Makefile
+++ b/arch/s390/boot/compressed/Makefile
@@ -10,7 +10,7 @@ targets += misc.o piggy.o sizes.h head.o

KBUILD_CFLAGS := -m64 -D__KERNEL__ $(LINUX_INCLUDE) -O2
KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
-KBUILD_CFLAGS += $(cflags-y) -fno-delete-null-pointer-checks
+KBUILD_CFLAGS += $(cflags-y) -fno-delete-null-pointer-checks -msoft-float
KBUILD_CFLAGS += $(call cc-option,-mpacked-stack)
KBUILD_CFLAGS += $(call cc-option,-ffreestanding)

diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c
index fe8d6924efaa..c78ba51ae285 100644
--- a/arch/s390/kernel/compat_signal.c
+++ b/arch/s390/kernel/compat_signal.c
@@ -48,6 +48,19 @@ typedef struct
struct ucontext32 uc;
} rt_sigframe32;

+static inline void sigset_to_sigset32(unsigned long *set64,
+ compat_sigset_word *set32)
+{
+ set32[0] = (compat_sigset_word) set64[0];
+ set32[1] = (compat_sigset_word)(set64[0] >> 32);
+}
+
+static inline void sigset32_to_sigset(compat_sigset_word *set32,
+ unsigned long *set64)
+{
+ set64[0] = (unsigned long) set32[0] | ((unsigned long) set32[1] << 32);
+}
+
int copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from)
{
int err;
@@ -303,10 +316,12 @@ COMPAT_SYSCALL_DEFINE0(sigreturn)
{
struct pt_regs *regs = task_pt_regs(current);
sigframe32 __user *frame = (sigframe32 __user *)regs->gprs[15];
+ compat_sigset_t cset;
sigset_t set;

- if (__copy_from_user(&set.sig, &frame->sc.oldmask, _SIGMASK_COPY_SIZE32))
+ if (__copy_from_user(&cset.sig, &frame->sc.oldmask, _SIGMASK_COPY_SIZE32))
goto badframe;
+ sigset32_to_sigset(cset.sig, set.sig);
set_current_blocked(&set);
if (restore_sigregs32(regs, &frame->sregs))
goto badframe;
@@ -323,10 +338,12 @@ COMPAT_SYSCALL_DEFINE0(rt_sigreturn)
{
struct pt_regs *regs = task_pt_regs(current);
rt_sigframe32 __user *frame = (rt_sigframe32 __user *)regs->gprs[15];
+ compat_sigset_t cset;
sigset_t set;

- if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
+ if (__copy_from_user(&cset, &frame->uc.uc_sigmask, sizeof(cset)))
goto badframe;
+ sigset32_to_sigset(cset.sig, set.sig);
set_current_blocked(&set);
if (compat_restore_altstack(&frame->uc.uc_stack))
goto badframe;
@@ -397,7 +414,7 @@ static int setup_frame32(struct ksignal *ksig, sigset_t *set,
return -EFAULT;

/* Create struct sigcontext32 on the signal stack */
- memcpy(&sc.oldmask, &set->sig, _SIGMASK_COPY_SIZE32);
+ sigset_to_sigset32(set->sig, sc.oldmask);
sc.sregs = (__u32)(unsigned long __force) &frame->sregs;
if (__copy_to_user(&frame->sc, &sc, sizeof(frame->sc)))
return -EFAULT;
@@ -458,6 +475,7 @@ static int setup_frame32(struct ksignal *ksig, sigset_t *set,
static int setup_rt_frame32(struct ksignal *ksig, sigset_t *set,
struct pt_regs *regs)
{
+ compat_sigset_t cset;
rt_sigframe32 __user *frame;
unsigned long restorer;
size_t frame_size;
@@ -505,11 +523,12 @@ static int setup_rt_frame32(struct ksignal *ksig, sigset_t *set,
store_sigregs();

/* Create ucontext on the signal stack. */
+ sigset_to_sigset32(set->sig, cset.sig);
if (__put_user(uc_flags, &frame->uc.uc_flags) ||
__put_user(0, &frame->uc.uc_link) ||
__compat_save_altstack(&frame->uc.uc_stack, regs->gprs[15]) ||
save_sigregs32(regs, &frame->uc.uc_mcontext) ||
- __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)) ||
+ __copy_to_user(&frame->uc.uc_sigmask, &cset, sizeof(cset)) ||
save_sigregs_ext32(regs, &frame->uc.uc_mcontext_ext))
return -EFAULT;

diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index 8cb3e438f21e..d330840a2b18 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -1219,7 +1219,18 @@ END(error_exit)

/* Runs on exception stack */
ENTRY(nmi)
+ /*
+ * Fix up the exception frame if we're on Xen.
+ * PARAVIRT_ADJUST_EXCEPTION_FRAME is guaranteed to push at most
+ * one value to the stack on native, so it may clobber the rdx
+ * scratch slot, but it won't clobber any of the important
+ * slots past it.
+ *
+ * Xen is a different story, because the Xen frame itself overlaps
+ * the "NMI executing" variable.
+ */
PARAVIRT_ADJUST_EXCEPTION_FRAME
+
/*
* We allow breakpoints in NMIs. If a breakpoint occurs, then
* the iretq it performs will take us out of NMI context.
@@ -1270,9 +1281,12 @@ ENTRY(nmi)
* we don't want to enable interrupts, because then we'll end
* up in an awkward situation in which IRQs are on but NMIs
* are off.
+ *
+ * We also must not push anything to the stack before switching
+ * stacks lest we corrupt the "NMI executing" variable.
*/

- SWAPGS
+ SWAPGS_UNSAFE_STACK
cld
movq %rsp, %rdx
movq PER_CPU_VAR(cpu_current_top_of_stack), %rsp
diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index 9ebc3d009373..2350ab78183a 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -311,6 +311,7 @@
/* C1E active bits in int pending message */
#define K8_INTP_C1E_ACTIVE_MASK 0x18000000
#define MSR_K8_TSEG_ADDR 0xc0010112
+#define MSR_K8_TSEG_MASK 0xc0010113
#define K8_MTRRFIXRANGE_DRAM_ENABLE 0x00040000 /* MtrrFixDramEn bit */
#define K8_MTRRFIXRANGE_DRAM_MODIFY 0x00080000 /* MtrrFixDramModEn bit */
#define K8_MTRR_RDMEM_WRMEM_MASK 0x18181818 /* Mask: RdMem|WrMem */
diff --git a/arch/x86/include/asm/preempt.h b/arch/x86/include/asm/preempt.h
index dca71714f860..b12f81022a6b 100644
--- a/arch/x86/include/asm/preempt.h
+++ b/arch/x86/include/asm/preempt.h
@@ -90,9 +90,9 @@ static __always_inline bool __preempt_count_dec_and_test(void)
/*
* Returns true when we need to resched and can (barring IRQ state).
*/
-static __always_inline bool should_resched(void)
+static __always_inline bool should_resched(int preempt_offset)
{
- return unlikely(!raw_cpu_read_4(__preempt_count));
+ return unlikely(raw_cpu_read_4(__preempt_count) == preempt_offset);
}

#ifdef CONFIG_PREEMPT
diff --git a/arch/x86/include/asm/qspinlock.h b/arch/x86/include/asm/qspinlock.h
index 9d51fae1cba3..eaba08076030 100644
--- a/arch/x86/include/asm/qspinlock.h
+++ b/arch/x86/include/asm/qspinlock.h
@@ -39,18 +39,27 @@ static inline void queued_spin_unlock(struct qspinlock *lock)
}
#endif

-#define virt_queued_spin_lock virt_queued_spin_lock
-
-static inline bool virt_queued_spin_lock(struct qspinlock *lock)
+#ifdef CONFIG_PARAVIRT
+#define virt_spin_lock virt_spin_lock
+static inline bool virt_spin_lock(struct qspinlock *lock)
{
if (!static_cpu_has(X86_FEATURE_HYPERVISOR))
return false;

- while (atomic_cmpxchg(&lock->val, 0, _Q_LOCKED_VAL) != 0)
- cpu_relax();
+ /*
+ * On hypervisors without PARAVIRT_SPINLOCKS support we fall
+ * back to a Test-and-Set spinlock, because fair locks have
+ * horrible lock 'holder' preemption issues.
+ */
+
+ do {
+ while (atomic_read(&lock->val) != 0)
+ cpu_relax();
+ } while (atomic_cmpxchg(&lock->val, 0, _Q_LOCKED_VAL) != 0);

return true;
}
+#endif /* CONFIG_PARAVIRT */

#include <asm-generic/qspinlock.h>

diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index c42827eb86cf..25f909362b7a 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -338,10 +338,15 @@ done:

static void __init_or_module optimize_nops(struct alt_instr *a, u8 *instr)
{
+ unsigned long flags;
+
if (instr[0] != 0x90)
return;

+ local_irq_save(flags);
add_nops(instr + (a->instrlen - a->padlen), a->padlen);
+ sync_core();
+ local_irq_restore(flags);

DUMP_BYTES(instr, a->instrlen, "%p: [%d:%d) optimized NOPs: ",
instr, a->instrlen - a->padlen, a->padlen);
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index cde732c1b495..307a49828826 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -336,6 +336,13 @@ static void __setup_APIC_LVTT(unsigned int clocks, int oneshot, int irqen)
apic_write(APIC_LVTT, lvtt_value);

if (lvtt_value & APIC_LVT_TIMER_TSCDEADLINE) {
+ /*
+ * See Intel SDM: TSC-Deadline Mode chapter. In xAPIC mode,
+ * writing to the APIC LVTT and TSC_DEADLINE MSR isn't serialized.
+ * According to Intel, MFENCE can do the serialization here.
+ */
+ asm volatile("mfence" : : : "memory");
+
printk_once(KERN_DEBUG "TSC deadline timer enabled\n");
return;
}
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 206052e55517..5880b482d83c 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -2522,6 +2522,7 @@ void __init setup_ioapic_dest(void)
int pin, ioapic, irq, irq_entry;
const struct cpumask *mask;
struct irq_data *idata;
+ struct irq_chip *chip;

if (skip_ioapic_setup == 1)
return;
@@ -2545,9 +2546,9 @@ void __init setup_ioapic_dest(void)
else
mask = apic->target_cpus();

- irq_set_affinity(irq, mask);
+ chip = irq_data_get_irq_chip(idata);
+ chip->irq_set_affinity(idata, mask, false);
}
-
}
#endif

diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c
index 6326ae24e4d5..1b09c420c7ff 100644
--- a/arch/x86/kernel/cpu/perf_event_intel.c
+++ b/arch/x86/kernel/cpu/perf_event_intel.c
@@ -2102,9 +2102,12 @@ static struct event_constraint *
intel_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
struct perf_event *event)
{
- struct event_constraint *c1 = cpuc->event_constraint[idx];
+ struct event_constraint *c1 = NULL;
struct event_constraint *c2;

+ if (idx >= 0) /* fake does < 0 */
+ c1 = cpuc->event_constraint[idx];
+
/*
* first time only
* - static constraint: no change across incremental scheduling calls
diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c
index e068d6683dba..74ca2fe7a0b3 100644
--- a/arch/x86/kernel/crash.c
+++ b/arch/x86/kernel/crash.c
@@ -185,10 +185,9 @@ void native_machine_crash_shutdown(struct pt_regs *regs)
}

#ifdef CONFIG_KEXEC_FILE
-static int get_nr_ram_ranges_callback(unsigned long start_pfn,
- unsigned long nr_pfn, void *arg)
+static int get_nr_ram_ranges_callback(u64 start, u64 end, void *arg)
{
- int *nr_ranges = arg;
+ unsigned int *nr_ranges = arg;

(*nr_ranges)++;
return 0;
@@ -214,7 +213,7 @@ static void fill_up_crash_elf_data(struct crash_elf_data *ced,

ced->image = image;

- walk_system_ram_range(0, -1, &nr_ranges,
+ walk_system_ram_res(0, -1, &nr_ranges,
get_nr_ram_ranges_callback);

ced->max_nr_ranges = nr_ranges;
diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c
index 58bcfb67c01f..ebb5657ee280 100644
--- a/arch/x86/kernel/paravirt.c
+++ b/arch/x86/kernel/paravirt.c
@@ -41,10 +41,18 @@
#include <asm/timer.h>
#include <asm/special_insns.h>

-/* nop stub */
-void _paravirt_nop(void)
-{
-}
+/*
+ * nop stub, which must not clobber anything *including the stack* to
+ * avoid confusing the entry prologues.
+ */
+extern void _paravirt_nop(void);
+asm (".pushsection .entry.text, \"ax\"\n"
+ ".global _paravirt_nop\n"
+ "_paravirt_nop:\n\t"
+ "ret\n\t"
+ ".size _paravirt_nop, . - _paravirt_nop\n\t"
+ ".type _paravirt_nop, @function\n\t"
+ ".popsection");

/* identity function, which can be inlined */
u32 _paravirt_ident_32(u32 x)
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index f6b916387590..a90ac95562af 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -497,27 +497,59 @@ void set_personality_ia32(bool x32)
}
EXPORT_SYMBOL_GPL(set_personality_ia32);

+/*
+ * Called from fs/proc with a reference on @p to find the function
+ * which called into schedule(). This needs to be done carefully
+ * because the task might wake up and we might look at a stack
+ * changing under us.
+ */
unsigned long get_wchan(struct task_struct *p)
{
- unsigned long stack;
- u64 fp, ip;
+ unsigned long start, bottom, top, sp, fp, ip;
int count = 0;

if (!p || p == current || p->state == TASK_RUNNING)
return 0;
- stack = (unsigned long)task_stack_page(p);
- if (p->thread.sp < stack || p->thread.sp >= stack+THREAD_SIZE)
+
+ start = (unsigned long)task_stack_page(p);
+ if (!start)
+ return 0;
+
+ /*
+ * Layout of the stack page:
+ *
+ * ----------- topmax = start + THREAD_SIZE - sizeof(unsigned long)
+ * PADDING
+ * ----------- top = topmax - TOP_OF_KERNEL_STACK_PADDING
+ * stack
+ * ----------- bottom = start + sizeof(thread_info)
+ * thread_info
+ * ----------- start
+ *
+ * The tasks stack pointer points at the location where the
+ * framepointer is stored. The data on the stack is:
+ * ... IP FP ... IP FP
+ *
+ * We need to read FP and IP, so we need to adjust the upper
+ * bound by another unsigned long.
+ */
+ top = start + THREAD_SIZE - TOP_OF_KERNEL_STACK_PADDING;
+ top -= 2 * sizeof(unsigned long);
+ bottom = start + sizeof(struct thread_info);
+
+ sp = READ_ONCE(p->thread.sp);
+ if (sp < bottom || sp > top)
return 0;
- fp = *(u64 *)(p->thread.sp);
+
+ fp = READ_ONCE(*(unsigned long *)sp);
do {
- if (fp < (unsigned long)stack ||
- fp >= (unsigned long)stack+THREAD_SIZE)
+ if (fp < bottom || fp > top)
return 0;
- ip = *(u64 *)(fp+8);
+ ip = READ_ONCE(*(unsigned long *)(fp + sizeof(unsigned long)));
if (!in_sched_functions(ip))
return ip;
- fp = *(u64 *)fp;
- } while (count++ < 16);
+ fp = READ_ONCE(*(unsigned long *)fp);
+ } while (count++ < 16 && p->state != TASK_RUNNING);
return 0;
}

diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index 7437b41f6a47..dc9af7a0839a 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -21,6 +21,7 @@
#include <asm/hypervisor.h>
#include <asm/nmi.h>
#include <asm/x86_init.h>
+#include <asm/geode.h>

unsigned int __read_mostly cpu_khz; /* TSC clocks / usec, not used here */
EXPORT_SYMBOL(cpu_khz);
@@ -1013,15 +1014,17 @@ EXPORT_SYMBOL_GPL(mark_tsc_unstable);

static void __init check_system_tsc_reliable(void)
{
-#ifdef CONFIG_MGEODE_LX
- /* RTSC counts during suspend */
+#if defined(CONFIG_MGEODEGX1) || defined(CONFIG_MGEODE_LX) || defined(CONFIG_X86_GENERIC)
+ if (is_geode_lx()) {
+ /* RTSC counts during suspend */
#define RTSC_SUSP 0x100
- unsigned long res_low, res_high;
+ unsigned long res_low, res_high;

- rdmsr_safe(MSR_GEODE_BUSCONT_CONF0, &res_low, &res_high);
- /* Geode_LX - the OLPC CPU has a very reliable TSC */
- if (res_low & RTSC_SUSP)
- tsc_clocksource_reliable = 1;
+ rdmsr_safe(MSR_GEODE_BUSCONT_CONF0, &res_low, &res_high);
+ /* Geode_LX - the OLPC CPU has a very reliable TSC */
+ if (res_low & RTSC_SUSP)
+ tsc_clocksource_reliable = 1;
+ }
#endif
if (boot_cpu_has(X86_FEATURE_TSC_RELIABLE))
tsc_clocksource_reliable = 1;
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 8e0c0844c6b9..2d32b67a1043 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -513,7 +513,7 @@ static void skip_emulated_instruction(struct kvm_vcpu *vcpu)
struct vcpu_svm *svm = to_svm(vcpu);

if (svm->vmcb->control.next_rip != 0) {
- WARN_ON(!static_cpu_has(X86_FEATURE_NRIPS));
+ WARN_ON_ONCE(!static_cpu_has(X86_FEATURE_NRIPS));
svm->next_rip = svm->vmcb->control.next_rip;
}

@@ -865,64 +865,6 @@ static void svm_disable_lbrv(struct vcpu_svm *svm)
set_msr_interception(msrpm, MSR_IA32_LASTINTTOIP, 0, 0);
}

-#define MTRR_TYPE_UC_MINUS 7
-#define MTRR2PROTVAL_INVALID 0xff
-
-static u8 mtrr2protval[8];
-
-static u8 fallback_mtrr_type(int mtrr)
-{
- /*
- * WT and WP aren't always available in the host PAT. Treat
- * them as UC and UC- respectively. Everything else should be
- * there.
- */
- switch (mtrr)
- {
- case MTRR_TYPE_WRTHROUGH:
- return MTRR_TYPE_UNCACHABLE;
- case MTRR_TYPE_WRPROT:
- return MTRR_TYPE_UC_MINUS;
- default:
- BUG();
- }
-}
-
-static void build_mtrr2protval(void)
-{
- int i;
- u64 pat;
-
- for (i = 0; i < 8; i++)
- mtrr2protval[i] = MTRR2PROTVAL_INVALID;
-
- /* Ignore the invalid MTRR types. */
- mtrr2protval[2] = 0;
- mtrr2protval[3] = 0;
-
- /*
- * Use host PAT value to figure out the mapping from guest MTRR
- * values to nested page table PAT/PCD/PWT values. We do not
- * want to change the host PAT value every time we enter the
- * guest.
- */
- rdmsrl(MSR_IA32_CR_PAT, pat);
- for (i = 0; i < 8; i++) {
- u8 mtrr = pat >> (8 * i);
-
- if (mtrr2protval[mtrr] == MTRR2PROTVAL_INVALID)
- mtrr2protval[mtrr] = __cm_idx2pte(i);
- }
-
- for (i = 0; i < 8; i++) {
- if (mtrr2protval[i] == MTRR2PROTVAL_INVALID) {
- u8 fallback = fallback_mtrr_type(i);
- mtrr2protval[i] = mtrr2protval[fallback];
- BUG_ON(mtrr2protval[i] == MTRR2PROTVAL_INVALID);
- }
- }
-}
-
static __init int svm_hardware_setup(void)
{
int cpu;
@@ -989,7 +931,6 @@ static __init int svm_hardware_setup(void)
} else
kvm_disable_tdp();

- build_mtrr2protval();
return 0;

err:
@@ -1144,39 +1085,6 @@ static u64 svm_compute_tsc_offset(struct kvm_vcpu *vcpu, u64 target_tsc)
return target_tsc - tsc;
}

-static void svm_set_guest_pat(struct vcpu_svm *svm, u64 *g_pat)
-{
- struct kvm_vcpu *vcpu = &svm->vcpu;
-
- /* Unlike Intel, AMD takes the guest's CR0.CD into account.
- *
- * AMD does not have IPAT. To emulate it for the case of guests
- * with no assigned devices, just set everything to WB. If guests
- * have assigned devices, however, we cannot force WB for RAM
- * pages only, so use the guest PAT directly.
- */
- if (!kvm_arch_has_assigned_device(vcpu->kvm))
- *g_pat = 0x0606060606060606;
- else
- *g_pat = vcpu->arch.pat;
-}
-
-static u64 svm_get_mt_mask(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio)
-{
- u8 mtrr;
-
- /*
- * 1. MMIO: trust guest MTRR, so same as item 3.
- * 2. No passthrough: always map as WB, and force guest PAT to WB as well
- * 3. Passthrough: can't guarantee the result, try to trust guest.
- */
- if (!is_mmio && !kvm_arch_has_assigned_device(vcpu->kvm))
- return 0;
-
- mtrr = kvm_mtrr_get_guest_memory_type(vcpu, gfn);
- return mtrr2protval[mtrr];
-}
-
static void init_vmcb(struct vcpu_svm *svm, bool init_event)
{
struct vmcb_control_area *control = &svm->vmcb->control;
@@ -1260,6 +1168,7 @@ static void init_vmcb(struct vcpu_svm *svm, bool init_event)
* It also updates the guest-visible cr0 value.
*/
(void)kvm_set_cr0(&svm->vcpu, X86_CR0_NW | X86_CR0_CD | X86_CR0_ET);
+ kvm_mmu_reset_context(&svm->vcpu);

save->cr4 = X86_CR4_PAE;
/* rdx = ?? */
@@ -1272,7 +1181,6 @@ static void init_vmcb(struct vcpu_svm *svm, bool init_event)
clr_cr_intercept(svm, INTERCEPT_CR3_READ);
clr_cr_intercept(svm, INTERCEPT_CR3_WRITE);
save->g_pat = svm->vcpu.arch.pat;
- svm_set_guest_pat(svm, &save->g_pat);
save->cr3 = 0;
save->cr4 = 0;
}
@@ -3347,16 +3255,6 @@ static int svm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr)
case MSR_VM_IGNNE:
vcpu_unimpl(vcpu, "unimplemented wrmsr: 0x%x data 0x%llx\n", ecx, data);
break;
- case MSR_IA32_CR_PAT:
- if (npt_enabled) {
- if (!kvm_mtrr_valid(vcpu, MSR_IA32_CR_PAT, data))
- return 1;
- vcpu->arch.pat = data;
- svm_set_guest_pat(svm, &svm->vmcb->save.g_pat);
- mark_dirty(svm->vmcb, VMCB_NPT);
- break;
- }
- /* fall through */
default:
return kvm_set_msr_common(vcpu, msr);
}
@@ -4191,6 +4089,11 @@ static bool svm_has_high_real_mode_segbase(void)
return true;
}

+static u64 svm_get_mt_mask(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio)
+{
+ return 0;
+}
+
static void svm_cpuid_update(struct kvm_vcpu *vcpu)
{
}
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 83b7b5cd75d5..aa9e8229571d 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -6134,6 +6134,8 @@ static __init int hardware_setup(void)
memcpy(vmx_msr_bitmap_longmode_x2apic,
vmx_msr_bitmap_longmode, PAGE_SIZE);

+ set_bit(0, vmx_vpid_bitmap); /* 0 is reserved for host */
+
if (enable_apicv) {
for (msr = 0x800; msr <= 0x8ff; msr++)
vmx_disable_intercept_msr_read_x2apic(msr);
@@ -8632,17 +8634,22 @@ static u64 vmx_get_mt_mask(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio)
u64 ipat = 0;

/* For VT-d and EPT combination
- * 1. MMIO: guest may want to apply WC, trust it.
+ * 1. MMIO: always map as UC
* 2. EPT with VT-d:
* a. VT-d without snooping control feature: can't guarantee the
- * result, try to trust guest. So the same as item 1.
+ * result, try to trust guest.
* b. VT-d with snooping control feature: snooping control feature of
* VT-d engine can guarantee the cache correctness. Just set it
* to WB to keep consistent with host. So the same as item 3.
* 3. EPT without VT-d: always map as WB and set IPAT=1 to keep
* consistent with host MTRR
*/
- if (!is_mmio && !kvm_arch_has_noncoherent_dma(vcpu->kvm)) {
+ if (is_mmio) {
+ cache = MTRR_TYPE_UNCACHABLE;
+ goto exit;
+ }
+
+ if (!kvm_arch_has_noncoherent_dma(vcpu->kvm)) {
ipat = VMX_EPT_IPAT_BIT;
cache = MTRR_TYPE_WRBACK;
goto exit;
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 8f0f6eca69da..32c6e6ac5964 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2388,6 +2388,8 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
case MSR_IA32_LASTINTFROMIP:
case MSR_IA32_LASTINTTOIP:
case MSR_K8_SYSCFG:
+ case MSR_K8_TSEG_ADDR:
+ case MSR_K8_TSEG_MASK:
case MSR_K7_HWCR:
case MSR_VM_HSAVE_PA:
case MSR_K8_INT_PENDING_MSG:
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 3fba623e3ba5..f9977a7a9444 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -1132,7 +1132,7 @@ void mark_rodata_ro(void)
* has been zapped already via cleanup_highmem().
*/
all_end = roundup((unsigned long)_brk_end, PMD_SIZE);
- set_memory_nx(rodata_start, (all_end - rodata_start) >> PAGE_SHIFT);
+ set_memory_nx(text_end, (all_end - text_end) >> PAGE_SHIFT);

rodata_test();

diff --git a/arch/x86/pci/intel_mid_pci.c b/arch/x86/pci/intel_mid_pci.c
index 27062303c881..7553921c146c 100644
--- a/arch/x86/pci/intel_mid_pci.c
+++ b/arch/x86/pci/intel_mid_pci.c
@@ -35,6 +35,9 @@

#define PCIE_CAP_OFFSET 0x100

+/* Quirks for the listed devices */
+#define PCI_DEVICE_ID_INTEL_MRFL_MMC 0x1190
+
/* Fixed BAR fields */
#define PCIE_VNDR_CAP_ID_FIXED_BAR 0x00 /* Fixed BAR (TBD) */
#define PCI_FIXED_BAR_0_SIZE 0x04
@@ -214,10 +217,27 @@ static int intel_mid_pci_irq_enable(struct pci_dev *dev)
if (dev->irq_managed && dev->irq > 0)
return 0;

- if (intel_mid_identify_cpu() == INTEL_MID_CPU_CHIP_TANGIER)
+ switch (intel_mid_identify_cpu()) {
+ case INTEL_MID_CPU_CHIP_TANGIER:
polarity = 0; /* active high */
- else
+
+ /* Special treatment for IRQ0 */
+ if (dev->irq == 0) {
+ /*
+ * TNG has IRQ0 assigned to eMMC controller. But there
+ * are also other devices with bogus PCI configuration
+ * that have IRQ0 assigned. This check ensures that
+ * eMMC gets it.
+ */
+ if (dev->device != PCI_DEVICE_ID_INTEL_MRFL_MMC)
+ return -EBUSY;
+ }
+ break;
+ default:
polarity = 1; /* active low */
+ break;
+ }
+
ioapic_set_alloc_attr(&info, dev_to_node(&dev->dev), 1, polarity);

/*
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index e4308fe6afe8..c6835bfad3a1 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -705,6 +705,70 @@ out:
}

/*
+ * Iterate the EFI memory map in reverse order because the regions
+ * will be mapped top-down. The end result is the same as if we had
+ * mapped things forward, but doesn't require us to change the
+ * existing implementation of efi_map_region().
+ */
+static inline void *efi_map_next_entry_reverse(void *entry)
+{
+ /* Initial call */
+ if (!entry)
+ return memmap.map_end - memmap.desc_size;
+
+ entry -= memmap.desc_size;
+ if (entry < memmap.map)
+ return NULL;
+
+ return entry;
+}
+
+/*
+ * efi_map_next_entry - Return the next EFI memory map descriptor
+ * @entry: Previous EFI memory map descriptor
+ *
+ * This is a helper function to iterate over the EFI memory map, which
+ * we do in different orders depending on the current configuration.
+ *
+ * To begin traversing the memory map @entry must be %NULL.
+ *
+ * Returns %NULL when we reach the end of the memory map.
+ */
+static void *efi_map_next_entry(void *entry)
+{
+ if (!efi_enabled(EFI_OLD_MEMMAP) && efi_enabled(EFI_64BIT)) {
+ /*
+ * Starting in UEFI v2.5 the EFI_PROPERTIES_TABLE
+ * config table feature requires us to map all entries
+ * in the same order as they appear in the EFI memory
+ * map. That is to say, entry N must have a lower
+ * virtual address than entry N+1. This is because the
+ * firmware toolchain leaves relative references in
+ * the code/data sections, which are split and become
+ * separate EFI memory regions. Mapping things
+ * out-of-order leads to the firmware accessing
+ * unmapped addresses.
+ *
+ * Since we need to map things this way whether or not
+ * the kernel actually makes use of
+ * EFI_PROPERTIES_TABLE, let's just switch to this
+ * scheme by default for 64-bit.
+ */
+ return efi_map_next_entry_reverse(entry);
+ }
+
+ /* Initial call */
+ if (!entry)
+ return memmap.map;
+
+ entry += memmap.desc_size;
+ if (entry >= memmap.map_end)
+ return NULL;
+
+ return entry;
+}
+
+/*
* Map the efi memory ranges of the runtime services and update new_mmap with
* virtual addresses.
*/
@@ -714,7 +778,8 @@ static void * __init efi_map_regions(int *count, int *pg_shift)
unsigned long left = 0;
efi_memory_desc_t *md;

- for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
+ p = NULL;
+ while ((p = efi_map_next_entry(p))) {
md = p;
if (!(md->attribute & EFI_MEMORY_RUNTIME)) {
#ifdef CONFIG_X86_64
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 11d6fb4e8483..777ad2f03160 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -33,6 +33,10 @@
#include <linux/memblock.h>
#include <linux/edd.h>

+#ifdef CONFIG_KEXEC_CORE
+#include <linux/kexec.h>
+#endif
+
#include <xen/xen.h>
#include <xen/events.h>
#include <xen/interface/xen.h>
@@ -1800,6 +1804,21 @@ static struct notifier_block xen_hvm_cpu_notifier = {
.notifier_call = xen_hvm_cpu_notify,
};

+#ifdef CONFIG_KEXEC_CORE
+static void xen_hvm_shutdown(void)
+{
+ native_machine_shutdown();
+ if (kexec_in_progress)
+ xen_reboot(SHUTDOWN_soft_reset);
+}
+
+static void xen_hvm_crash_shutdown(struct pt_regs *regs)
+{
+ native_machine_crash_shutdown(regs);
+ xen_reboot(SHUTDOWN_soft_reset);
+}
+#endif
+
static void __init xen_hvm_guest_init(void)
{
if (xen_pv_domain())
@@ -1819,6 +1838,10 @@ static void __init xen_hvm_guest_init(void)
x86_init.irqs.intr_init = xen_init_IRQ;
xen_hvm_init_time_ops();
xen_hvm_init_mmu_ops();
+#ifdef CONFIG_KEXEC_CORE
+ machine_ops.shutdown = xen_hvm_shutdown;
+ machine_ops.crash_shutdown = xen_hvm_crash_shutdown;
+#endif
}
#endif

diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index d6283b3f5db5..9cc48d1d7abb 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -387,6 +387,9 @@ static void blkg_destroy_all(struct request_queue *q)
blkg_destroy(blkg);
spin_unlock(&blkcg->lock);
}
+
+ q->root_blkg = NULL;
+ q->root_rl.blkg = NULL;
}

/*
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 176262ec3731..c69902695136 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1807,7 +1807,6 @@ static void blk_mq_map_swqueue(struct request_queue *q)

hctx = q->mq_ops->map_queue(q, i);
cpumask_set_cpu(i, hctx->cpumask);
- cpumask_set_cpu(i, hctx->tags->cpumask);
ctx->index_hw = hctx->nr_ctx;
hctx->ctxs[hctx->nr_ctx++] = ctx;
}
@@ -1847,6 +1846,14 @@ static void blk_mq_map_swqueue(struct request_queue *q)
hctx->next_cpu = cpumask_first(hctx->cpumask);
hctx->next_cpu_batch = BLK_MQ_CPU_WORK_BATCH;
}
+
+ queue_for_each_ctx(q, ctx, i) {
+ if (!cpu_online(i))
+ continue;
+
+ hctx = q->mq_ops->map_queue(q, i);
+ cpumask_set_cpu(i, hctx->tags->cpumask);
+ }
}

static void blk_mq_update_tag_set_depth(struct blk_mq_tag_set *set)
diff --git a/drivers/base/cacheinfo.c b/drivers/base/cacheinfo.c
index 764280a91776..e9fd32e91668 100644
--- a/drivers/base/cacheinfo.c
+++ b/drivers/base/cacheinfo.c
@@ -148,7 +148,11 @@ static void cache_shared_cpu_map_remove(unsigned int cpu)

if (sibling == cpu) /* skip itself */
continue;
+
sib_cpu_ci = get_cpu_cacheinfo(sibling);
+ if (!sib_cpu_ci->info_list)
+ continue;
+
sib_leaf = sib_cpu_ci->info_list + index;
cpumask_clear_cpu(cpu, &sib_leaf->shared_cpu_map);
cpumask_clear_cpu(sibling, &this_leaf->shared_cpu_map);
@@ -159,6 +163,9 @@ static void cache_shared_cpu_map_remove(unsigned int cpu)

static void free_cache_attributes(unsigned int cpu)
{
+ if (!per_cpu_cacheinfo(cpu))
+ return;
+
cache_shared_cpu_map_remove(cpu);

kfree(per_cpu_cacheinfo(cpu));
@@ -514,8 +521,7 @@ static int cacheinfo_cpu_callback(struct notifier_block *nfb,
break;
case CPU_DEAD:
cache_remove_dev(cpu);
- if (per_cpu_cacheinfo(cpu))
- free_cache_attributes(cpu);
+ free_cache_attributes(cpu);
break;
}
return notifier_from_errno(rc);
diff --git a/drivers/base/property.c b/drivers/base/property.c
index f3f6d167f3f1..37a7bb7b239d 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -27,9 +27,10 @@
*/
void device_add_property_set(struct device *dev, struct property_set *pset)
{
- if (pset)
- pset->fwnode.type = FWNODE_PDATA;
+ if (!pset)
+ return;

+ pset->fwnode.type = FWNODE_PDATA;
set_secondary_fwnode(dev, &pset->fwnode);
}
EXPORT_SYMBOL_GPL(device_add_property_set);
diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c
index 5799a0b9e6cc..c8941f39c919 100644
--- a/drivers/base/regmap/regmap-debugfs.c
+++ b/drivers/base/regmap/regmap-debugfs.c
@@ -32,8 +32,7 @@ static DEFINE_MUTEX(regmap_debugfs_early_lock);
/* Calculate the length of a fixed format */
static size_t regmap_calc_reg_len(int max_val, char *buf, size_t buf_size)
{
- snprintf(buf, buf_size, "%x", max_val);
- return strlen(buf);
+ return snprintf(NULL, 0, "%x", max_val);
}

static ssize_t regmap_name_read_file(struct file *file,
@@ -432,7 +431,7 @@ static ssize_t regmap_access_read_file(struct file *file,
/* If we're in the region the user is trying to read */
if (p >= *ppos) {
/* ...but not beyond it */
- if (buf_pos >= count - 1 - tot_len)
+ if (buf_pos + tot_len + 1 >= count)
break;

/* Format the register */
diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
index deb3f001791f..767657565de6 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -212,6 +212,9 @@ static int xen_blkif_map(struct xen_blkif *blkif, grant_ref_t *gref,

static int xen_blkif_disconnect(struct xen_blkif *blkif)
{
+ struct pending_req *req, *n;
+ int i = 0, j;
+
if (blkif->xenblkd) {
kthread_stop(blkif->xenblkd);
wake_up(&blkif->shutdown_wq);
@@ -238,13 +241,28 @@ static int xen_blkif_disconnect(struct xen_blkif *blkif)
/* Remove all persistent grants and the cache of ballooned pages. */
xen_blkbk_free_caches(blkif);

+ /* Check that there is no request in use */
+ list_for_each_entry_safe(req, n, &blkif->pending_free, free_list) {
+ list_del(&req->free_list);
+
+ for (j = 0; j < MAX_INDIRECT_SEGMENTS; j++)
+ kfree(req->segments[j]);
+
+ for (j = 0; j < MAX_INDIRECT_PAGES; j++)
+ kfree(req->indirect_pages[j]);
+
+ kfree(req);
+ i++;
+ }
+
+ WARN_ON(i != (XEN_BLKIF_REQS_PER_PAGE * blkif->nr_ring_pages));
+ blkif->nr_ring_pages = 0;
+
return 0;
}

static void xen_blkif_free(struct xen_blkif *blkif)
{
- struct pending_req *req, *n;
- int i = 0, j;

xen_blkif_disconnect(blkif);
xen_vbd_free(&blkif->vbd);
@@ -257,22 +275,6 @@ static void xen_blkif_free(struct xen_blkif *blkif)
BUG_ON(!list_empty(&blkif->free_pages));
BUG_ON(!RB_EMPTY_ROOT(&blkif->persistent_gnts));

- /* Check that there is no request in use */
- list_for_each_entry_safe(req, n, &blkif->pending_free, free_list) {
- list_del(&req->free_list);
-
- for (j = 0; j < MAX_INDIRECT_SEGMENTS; j++)
- kfree(req->segments[j]);
-
- for (j = 0; j < MAX_INDIRECT_PAGES; j++)
- kfree(req->indirect_pages[j]);
-
- kfree(req);
- i++;
- }
-
- WARN_ON(i != (XEN_BLKIF_REQS_PER_PAGE * blkif->nr_ring_pages));
-
kmem_cache_free(xen_blkif_cachep, blkif);
}

diff --git a/drivers/clk/samsung/clk-cpu.c b/drivers/clk/samsung/clk-cpu.c
index 3a1fe07cfe9e..dd02356e2e86 100644
--- a/drivers/clk/samsung/clk-cpu.c
+++ b/drivers/clk/samsung/clk-cpu.c
@@ -161,7 +161,7 @@ static int exynos_cpuclk_pre_rate_change(struct clk_notifier_data *ndata,
* the values for DIV_COPY and DIV_HPM dividers need not be set.
*/
div0 = cfg_data->div0;
- if (test_bit(CLK_CPU_HAS_DIV1, &cpuclk->flags)) {
+ if (cpuclk->flags & CLK_CPU_HAS_DIV1) {
div1 = cfg_data->div1;
if (readl(base + E4210_SRC_CPU) & E4210_MUX_HPM_MASK)
div1 = readl(base + E4210_DIV_CPU1) &
@@ -182,7 +182,7 @@ static int exynos_cpuclk_pre_rate_change(struct clk_notifier_data *ndata,
alt_div = DIV_ROUND_UP(alt_prate, tmp_rate) - 1;
WARN_ON(alt_div >= MAX_DIV);

- if (test_bit(CLK_CPU_NEEDS_DEBUG_ALT_DIV, &cpuclk->flags)) {
+ if (cpuclk->flags & CLK_CPU_NEEDS_DEBUG_ALT_DIV) {
/*
* In Exynos4210, ATB clock parent is also mout_core. So
* ATB clock also needs to be mantained at safe speed.
@@ -203,7 +203,7 @@ static int exynos_cpuclk_pre_rate_change(struct clk_notifier_data *ndata,
writel(div0, base + E4210_DIV_CPU0);
wait_until_divider_stable(base + E4210_DIV_STAT_CPU0, DIV_MASK_ALL);

- if (test_bit(CLK_CPU_HAS_DIV1, &cpuclk->flags)) {
+ if (cpuclk->flags & CLK_CPU_HAS_DIV1) {
writel(div1, base + E4210_DIV_CPU1);
wait_until_divider_stable(base + E4210_DIV_STAT_CPU1,
DIV_MASK_ALL);
@@ -222,7 +222,7 @@ static int exynos_cpuclk_post_rate_change(struct clk_notifier_data *ndata,
unsigned long mux_reg;

/* find out the divider values to use for clock data */
- if (test_bit(CLK_CPU_NEEDS_DEBUG_ALT_DIV, &cpuclk->flags)) {
+ if (cpuclk->flags & CLK_CPU_NEEDS_DEBUG_ALT_DIV) {
while ((cfg_data->prate * 1000) != ndata->new_rate) {
if (cfg_data->prate == 0)
return -EINVAL;
@@ -237,7 +237,7 @@ static int exynos_cpuclk_post_rate_change(struct clk_notifier_data *ndata,
writel(mux_reg & ~(1 << 16), base + E4210_SRC_CPU);
wait_until_mux_stable(base + E4210_STAT_CPU, 16, 1);

- if (test_bit(CLK_CPU_NEEDS_DEBUG_ALT_DIV, &cpuclk->flags)) {
+ if (cpuclk->flags & CLK_CPU_NEEDS_DEBUG_ALT_DIV) {
div |= (cfg_data->div0 & E4210_DIV0_ATB_MASK);
div_mask |= E4210_DIV0_ATB_MASK;
}
diff --git a/drivers/clk/ti/clk-3xxx.c b/drivers/clk/ti/clk-3xxx.c
index 757636d166cf..4ab28cfb8d2a 100644
--- a/drivers/clk/ti/clk-3xxx.c
+++ b/drivers/clk/ti/clk-3xxx.c
@@ -163,7 +163,6 @@ static struct ti_dt_clk omap3xxx_clks[] = {
DT_CLK(NULL, "gpio2_ick", "gpio2_ick"),
DT_CLK(NULL, "wdt3_ick", "wdt3_ick"),
DT_CLK(NULL, "uart3_ick", "uart3_ick"),
- DT_CLK(NULL, "uart4_ick", "uart4_ick"),
DT_CLK(NULL, "gpt9_ick", "gpt9_ick"),
DT_CLK(NULL, "gpt8_ick", "gpt8_ick"),
DT_CLK(NULL, "gpt7_ick", "gpt7_ick"),
@@ -308,6 +307,7 @@ static struct ti_dt_clk am35xx_clks[] = {
static struct ti_dt_clk omap36xx_clks[] = {
DT_CLK(NULL, "omap_192m_alwon_fck", "omap_192m_alwon_fck"),
DT_CLK(NULL, "uart4_fck", "uart4_fck"),
+ DT_CLK(NULL, "uart4_ick", "uart4_ick"),
{ .node_name = NULL },
};

diff --git a/drivers/clk/ti/clk-7xx.c b/drivers/clk/ti/clk-7xx.c
index 63b8323df918..0eb82107c421 100644
--- a/drivers/clk/ti/clk-7xx.c
+++ b/drivers/clk/ti/clk-7xx.c
@@ -16,7 +16,6 @@
#include <linux/clkdev.h>
#include <linux/clk/ti.h>

-#define DRA7_DPLL_ABE_DEFFREQ 180633600
#define DRA7_DPLL_GMAC_DEFFREQ 1000000000
#define DRA7_DPLL_USB_DEFFREQ 960000000

@@ -312,27 +311,12 @@ static struct ti_dt_clk dra7xx_clks[] = {
int __init dra7xx_dt_clk_init(void)
{
int rc;
- struct clk *abe_dpll_mux, *sys_clkin2, *dpll_ck, *hdcp_ck;
+ struct clk *dpll_ck, *hdcp_ck;

ti_dt_clocks_register(dra7xx_clks);

omap2_clk_disable_autoidle_all();

- abe_dpll_mux = clk_get_sys(NULL, "abe_dpll_sys_clk_mux");
- sys_clkin2 = clk_get_sys(NULL, "sys_clkin2");
- dpll_ck = clk_get_sys(NULL, "dpll_abe_ck");
-
- rc = clk_set_parent(abe_dpll_mux, sys_clkin2);
- if (!rc)
- rc = clk_set_rate(dpll_ck, DRA7_DPLL_ABE_DEFFREQ);
- if (rc)
- pr_err("%s: failed to configure ABE DPLL!\n", __func__);
-
- dpll_ck = clk_get_sys(NULL, "dpll_abe_m2x2_ck");
- rc = clk_set_rate(dpll_ck, DRA7_DPLL_ABE_DEFFREQ * 2);
- if (rc)
- pr_err("%s: failed to configure ABE DPLL m2x2!\n", __func__);
-
dpll_ck = clk_get_sys(NULL, "dpll_gmac_ck");
rc = clk_set_rate(dpll_ck, DRA7_DPLL_GMAC_DEFFREQ);
if (rc)
diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
index 0136dfcdabf0..7c2a7385c2ad 100644
--- a/drivers/cpufreq/acpi-cpufreq.c
+++ b/drivers/cpufreq/acpi-cpufreq.c
@@ -146,6 +146,9 @@ static ssize_t show_freqdomain_cpus(struct cpufreq_policy *policy, char *buf)
{
struct acpi_cpufreq_data *data = per_cpu(acfreq_data, policy->cpu);

+ if (unlikely(!data))
+ return -ENODEV;
+
return cpufreq_show_cpus(data->freqdomain_cpus, buf);
}

diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c
index 528a82bf5038..99a406501e8c 100644
--- a/drivers/cpufreq/cpufreq-dt.c
+++ b/drivers/cpufreq/cpufreq-dt.c
@@ -255,7 +255,8 @@ static int cpufreq_init(struct cpufreq_policy *policy)
rcu_read_unlock();

tol_uV = opp_uV * priv->voltage_tolerance / 100;
- if (regulator_is_supported_voltage(cpu_reg, opp_uV,
+ if (regulator_is_supported_voltage(cpu_reg,
+ opp_uV - tol_uV,
opp_uV + tol_uV)) {
if (opp_uV < min_uV)
min_uV = opp_uV;
diff --git a/drivers/crypto/marvell/cesa.h b/drivers/crypto/marvell/cesa.h
index b60698b30d30..bc2a55bc35e4 100644
--- a/drivers/crypto/marvell/cesa.h
+++ b/drivers/crypto/marvell/cesa.h
@@ -687,6 +687,33 @@ static inline u32 mv_cesa_get_int_mask(struct mv_cesa_engine *engine)

int mv_cesa_queue_req(struct crypto_async_request *req);

+/*
+ * Helper function that indicates whether a crypto request needs to be
+ * cleaned up or not after being enqueued using mv_cesa_queue_req().
+ */
+static inline int mv_cesa_req_needs_cleanup(struct crypto_async_request *req,
+ int ret)
+{
+ /*
+ * The queue still had some space, the request was queued
+ * normally, so there's no need to clean it up.
+ */
+ if (ret == -EINPROGRESS)
+ return false;
+
+ /*
+ * The queue had not space left, but since the request is
+ * flagged with CRYPTO_TFM_REQ_MAY_BACKLOG, it was added to
+ * the backlog and will be processed later. There's no need to
+ * clean it up.
+ */
+ if (ret == -EBUSY && req->flags & CRYPTO_TFM_REQ_MAY_BACKLOG)
+ return false;
+
+ /* Request wasn't queued, we need to clean it up */
+ return true;
+}
+
/* TDMA functions */

static inline void mv_cesa_req_dma_iter_init(struct mv_cesa_dma_iter *iter,
diff --git a/drivers/crypto/marvell/cipher.c b/drivers/crypto/marvell/cipher.c
index 0745cf3b9c0e..3df2f4e7adb2 100644
--- a/drivers/crypto/marvell/cipher.c
+++ b/drivers/crypto/marvell/cipher.c
@@ -189,7 +189,6 @@ static inline void mv_cesa_ablkcipher_prepare(struct crypto_async_request *req,
{
struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(ablkreq);
-
creq->req.base.engine = engine;

if (creq->req.base.type == CESA_DMA_REQ)
@@ -431,7 +430,7 @@ static int mv_cesa_des_op(struct ablkcipher_request *req,
return ret;

ret = mv_cesa_queue_req(&req->base);
- if (ret && ret != -EINPROGRESS)
+ if (mv_cesa_req_needs_cleanup(&req->base, ret))
mv_cesa_ablkcipher_cleanup(req);

return ret;
@@ -551,7 +550,7 @@ static int mv_cesa_des3_op(struct ablkcipher_request *req,
return ret;

ret = mv_cesa_queue_req(&req->base);
- if (ret && ret != -EINPROGRESS)
+ if (mv_cesa_req_needs_cleanup(&req->base, ret))
mv_cesa_ablkcipher_cleanup(req);

return ret;
@@ -693,7 +692,7 @@ static int mv_cesa_aes_op(struct ablkcipher_request *req,
return ret;

ret = mv_cesa_queue_req(&req->base);
- if (ret && ret != -EINPROGRESS)
+ if (mv_cesa_req_needs_cleanup(&req->base, ret))
mv_cesa_ablkcipher_cleanup(req);

return ret;
diff --git a/drivers/crypto/marvell/hash.c b/drivers/crypto/marvell/hash.c
index ae9272eb9c1a..e8d0d7128137 100644
--- a/drivers/crypto/marvell/hash.c
+++ b/drivers/crypto/marvell/hash.c
@@ -739,10 +739,8 @@ static int mv_cesa_ahash_update(struct ahash_request *req)
return 0;

ret = mv_cesa_queue_req(&req->base);
- if (ret && ret != -EINPROGRESS) {
+ if (mv_cesa_req_needs_cleanup(&req->base, ret))
mv_cesa_ahash_cleanup(req);
- return ret;
- }

return ret;
}
@@ -766,7 +764,7 @@ static int mv_cesa_ahash_final(struct ahash_request *req)
return 0;

ret = mv_cesa_queue_req(&req->base);
- if (ret && ret != -EINPROGRESS)
+ if (mv_cesa_req_needs_cleanup(&req->base, ret))
mv_cesa_ahash_cleanup(req);

return ret;
@@ -791,7 +789,7 @@ static int mv_cesa_ahash_finup(struct ahash_request *req)
return 0;

ret = mv_cesa_queue_req(&req->base);
- if (ret && ret != -EINPROGRESS)
+ if (mv_cesa_req_needs_cleanup(&req->base, ret))
mv_cesa_ahash_cleanup(req);

return ret;
diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c
index 40afa2a16cfc..da7917a2eed2 100644
--- a/drivers/dma/at_xdmac.c
+++ b/drivers/dma/at_xdmac.c
@@ -455,6 +455,15 @@ static struct at_xdmac_desc *at_xdmac_alloc_desc(struct dma_chan *chan,
return desc;
}

+void at_xdmac_init_used_desc(struct at_xdmac_desc *desc)
+{
+ memset(&desc->lld, 0, sizeof(desc->lld));
+ INIT_LIST_HEAD(&desc->descs_list);
+ desc->direction = DMA_TRANS_NONE;
+ desc->xfer_size = 0;
+ desc->active_xfer = false;
+}
+
/* Call must be protected by lock. */
static struct at_xdmac_desc *at_xdmac_get_desc(struct at_xdmac_chan *atchan)
{
@@ -466,7 +475,7 @@ static struct at_xdmac_desc *at_xdmac_get_desc(struct at_xdmac_chan *atchan)
desc = list_first_entry(&atchan->free_descs_list,
struct at_xdmac_desc, desc_node);
list_del(&desc->desc_node);
- desc->active_xfer = false;
+ at_xdmac_init_used_desc(desc);
}

return desc;
@@ -797,10 +806,7 @@ at_xdmac_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t buf_addr,
list_add_tail(&desc->desc_node, &first->descs_list);
}

- prev->lld.mbr_nda = first->tx_dma_desc.phys;
- dev_dbg(chan2dev(chan),
- "%s: chain lld: prev=0x%p, mbr_nda=%pad\n",
- __func__, prev, &prev->lld.mbr_nda);
+ at_xdmac_queue_desc(chan, prev, first);
first->tx_dma_desc.flags = flags;
first->xfer_size = buf_len;
first->direction = direction;
@@ -878,14 +884,14 @@ at_xdmac_interleaved_queue_desc(struct dma_chan *chan,

if (xt->src_inc) {
if (xt->src_sgl)
- chan_cc |= AT_XDMAC_CC_SAM_UBS_DS_AM;
+ chan_cc |= AT_XDMAC_CC_SAM_UBS_AM;
else
chan_cc |= AT_XDMAC_CC_SAM_INCREMENTED_AM;
}

if (xt->dst_inc) {
if (xt->dst_sgl)
- chan_cc |= AT_XDMAC_CC_DAM_UBS_DS_AM;
+ chan_cc |= AT_XDMAC_CC_DAM_UBS_AM;
else
chan_cc |= AT_XDMAC_CC_DAM_INCREMENTED_AM;
}
diff --git a/drivers/dma/dw/core.c b/drivers/dma/dw/core.c
index cf1c87fa1edd..bedce038c6e2 100644
--- a/drivers/dma/dw/core.c
+++ b/drivers/dma/dw/core.c
@@ -1591,7 +1591,6 @@ int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata)
INIT_LIST_HEAD(&dw->dma.channels);
for (i = 0; i < nr_channels; i++) {
struct dw_dma_chan *dwc = &dw->chan[i];
- int r = nr_channels - i - 1;

dwc->chan.device = &dw->dma;
dma_cookie_init(&dwc->chan);
@@ -1603,7 +1602,7 @@ int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata)

/* 7 is highest priority & 0 is lowest. */
if (pdata->chan_priority == CHAN_PRIORITY_ASCENDING)
- dwc->priority = r;
+ dwc->priority = nr_channels - i - 1;
else
dwc->priority = i;

@@ -1622,6 +1621,7 @@ int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata)
/* Hardware configuration */
if (autocfg) {
unsigned int dwc_params;
+ unsigned int r = DW_DMA_MAX_NR_CHANNELS - i - 1;
void __iomem *addr = chip->regs + r * sizeof(u32);

dwc_params = dma_read_byaddr(addr, DWC_PARAMS);
diff --git a/drivers/dma/pxa_dma.c b/drivers/dma/pxa_dma.c
index ddcbbf5cd9e9..95bdbbe2a671 100644
--- a/drivers/dma/pxa_dma.c
+++ b/drivers/dma/pxa_dma.c
@@ -888,6 +888,7 @@ pxad_tx_prep(struct virt_dma_chan *vc, struct virt_dma_desc *vd,
struct dma_async_tx_descriptor *tx;
struct pxad_chan *chan = container_of(vc, struct pxad_chan, vc);

+ INIT_LIST_HEAD(&vd->node);
tx = vchan_tx_prep(vc, vd, tx_flags);
tx->tx_submit = pxad_tx_submit;
dev_dbg(&chan->vc.chan.dev->device,
diff --git a/drivers/extcon/extcon.c b/drivers/extcon/extcon.c
index 43b57b02d050..ca94f475fd05 100644
--- a/drivers/extcon/extcon.c
+++ b/drivers/extcon/extcon.c
@@ -126,7 +126,7 @@ static int find_cable_index_by_id(struct extcon_dev *edev, const unsigned int id

static int find_cable_id_by_name(struct extcon_dev *edev, const char *name)
{
- unsigned int id = -EINVAL;
+ int id = -EINVAL;
int i = 0;

/* Find the id of extcon cable */
@@ -143,7 +143,7 @@ static int find_cable_id_by_name(struct extcon_dev *edev, const char *name)

static int find_cable_index_by_name(struct extcon_dev *edev, const char *name)
{
- unsigned int id;
+ int id;

if (edev->max_supported == 0)
return -EINVAL;
@@ -159,7 +159,7 @@ static int find_cable_index_by_name(struct extcon_dev *edev, const char *name)
static bool is_extcon_changed(u32 prev, u32 new, int idx, bool *attached)
{
if (((prev >> idx) & 0x1) != ((new >> idx) & 0x1)) {
- *attached = new ? true : false;
+ *attached = ((new >> idx) & 0x1) ? true : false;
return true;
}

@@ -378,7 +378,7 @@ EXPORT_SYMBOL_GPL(extcon_get_cable_state_);
*/
int extcon_get_cable_state(struct extcon_dev *edev, const char *cable_name)
{
- unsigned int id;
+ int id;

id = find_cable_id_by_name(edev, cable_name);
if (id < 0)
@@ -426,7 +426,7 @@ EXPORT_SYMBOL_GPL(extcon_set_cable_state_);
int extcon_set_cable_state(struct extcon_dev *edev,
const char *cable_name, bool cable_state)
{
- unsigned int id;
+ int id;

id = find_cable_id_by_name(edev, cable_name);
if (id < 0)
diff --git a/drivers/firmware/efi/libstub/arm-stub.c b/drivers/firmware/efi/libstub/arm-stub.c
index e29560e6b40b..950c87f5d279 100644
--- a/drivers/firmware/efi/libstub/arm-stub.c
+++ b/drivers/firmware/efi/libstub/arm-stub.c
@@ -13,6 +13,7 @@
*/

#include <linux/efi.h>
+#include <linux/sort.h>
#include <asm/efi.h>

#include "efistub.h"
@@ -305,6 +306,44 @@ fail:
*/
#define EFI_RT_VIRTUAL_BASE 0x40000000

+static int cmp_mem_desc(const void *l, const void *r)
+{
+ const efi_memory_desc_t *left = l, *right = r;
+
+ return (left->phys_addr > right->phys_addr) ? 1 : -1;
+}
+
+/*
+ * Returns whether region @left ends exactly where region @right starts,
+ * or false if either argument is NULL.
+ */
+static bool regions_are_adjacent(efi_memory_desc_t *left,
+ efi_memory_desc_t *right)
+{
+ u64 left_end;
+
+ if (left == NULL || right == NULL)
+ return false;
+
+ left_end = left->phys_addr + left->num_pages * EFI_PAGE_SIZE;
+
+ return left_end == right->phys_addr;
+}
+
+/*
+ * Returns whether region @left and region @right have compatible memory type
+ * mapping attributes, and are both EFI_MEMORY_RUNTIME regions.
+ */
+static bool regions_have_compatible_memory_type_attrs(efi_memory_desc_t *left,
+ efi_memory_desc_t *right)
+{
+ static const u64 mem_type_mask = EFI_MEMORY_WB | EFI_MEMORY_WT |
+ EFI_MEMORY_WC | EFI_MEMORY_UC |
+ EFI_MEMORY_RUNTIME;
+
+ return ((left->attribute ^ right->attribute) & mem_type_mask) == 0;
+}
+
/*
* efi_get_virtmap() - create a virtual mapping for the EFI memory map
*
@@ -317,33 +356,52 @@ void efi_get_virtmap(efi_memory_desc_t *memory_map, unsigned long map_size,
int *count)
{
u64 efi_virt_base = EFI_RT_VIRTUAL_BASE;
- efi_memory_desc_t *out = runtime_map;
+ efi_memory_desc_t *in, *prev = NULL, *out = runtime_map;
int l;

- for (l = 0; l < map_size; l += desc_size) {
- efi_memory_desc_t *in = (void *)memory_map + l;
+ /*
+ * To work around potential issues with the Properties Table feature
+ * introduced in UEFI 2.5, which may split PE/COFF executable images
+ * in memory into several RuntimeServicesCode and RuntimeServicesData
+ * regions, we need to preserve the relative offsets between adjacent
+ * EFI_MEMORY_RUNTIME regions with the same memory type attributes.
+ * The easiest way to find adjacent regions is to sort the memory map
+ * before traversing it.
+ */
+ sort(memory_map, map_size / desc_size, desc_size, cmp_mem_desc, NULL);
+
+ for (l = 0; l < map_size; l += desc_size, prev = in) {
u64 paddr, size;

+ in = (void *)memory_map + l;
if (!(in->attribute & EFI_MEMORY_RUNTIME))
continue;

+ paddr = in->phys_addr;
+ size = in->num_pages * EFI_PAGE_SIZE;
+
/*
* Make the mapping compatible with 64k pages: this allows
* a 4k page size kernel to kexec a 64k page size kernel and
* vice versa.
*/
- paddr = round_down(in->phys_addr, SZ_64K);
- size = round_up(in->num_pages * EFI_PAGE_SIZE +
- in->phys_addr - paddr, SZ_64K);
-
- /*
- * Avoid wasting memory on PTEs by choosing a virtual base that
- * is compatible with section mappings if this region has the
- * appropriate size and physical alignment. (Sections are 2 MB
- * on 4k granule kernels)
- */
- if (IS_ALIGNED(in->phys_addr, SZ_2M) && size >= SZ_2M)
- efi_virt_base = round_up(efi_virt_base, SZ_2M);
+ if (!regions_are_adjacent(prev, in) ||
+ !regions_have_compatible_memory_type_attrs(prev, in)) {
+
+ paddr = round_down(in->phys_addr, SZ_64K);
+ size += in->phys_addr - paddr;
+
+ /*
+ * Avoid wasting memory on PTEs by choosing a virtual
+ * base that is compatible with section mappings if this
+ * region has the appropriate size and physical
+ * alignment. (Sections are 2 MB on 4k granule kernels)
+ */
+ if (IS_ALIGNED(in->phys_addr, SZ_2M) && size >= SZ_2M)
+ efi_virt_base = round_up(efi_virt_base, SZ_2M);
+ else
+ efi_virt_base = round_up(efi_virt_base, SZ_64K);
+ }

in->virt_addr = efi_virt_base + in->phys_addr - paddr;
efi_virt_base += size;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
index b4d36f0f2153..c098d762089c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
@@ -140,7 +140,7 @@ void amdgpu_irq_preinstall(struct drm_device *dev)
*/
int amdgpu_irq_postinstall(struct drm_device *dev)
{
- dev->max_vblank_count = 0x001fffff;
+ dev->max_vblank_count = 0x00ffffff;
return 0;
}

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
index 2abc661845b6..ddcfbf3b188b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
@@ -543,46 +543,60 @@ static int amdgpu_uvd_cs_msg(struct amdgpu_uvd_cs_ctx *ctx,
return -EINVAL;
}

- if (msg_type == 1) {
+ switch (msg_type) {
+ case 0:
+ /* it's a create msg, calc image size (width * height) */
+ amdgpu_bo_kunmap(bo);
+
+ /* try to alloc a new handle */
+ for (i = 0; i < AMDGPU_MAX_UVD_HANDLES; ++i) {
+ if (atomic_read(&adev->uvd.handles[i]) == handle) {
+ DRM_ERROR("Handle 0x%x already in use!\n", handle);
+ return -EINVAL;
+ }
+
+ if (!atomic_cmpxchg(&adev->uvd.handles[i], 0, handle)) {
+ adev->uvd.filp[i] = ctx->parser->filp;
+ return 0;
+ }
+ }
+
+ DRM_ERROR("No more free UVD handles!\n");
+ return -EINVAL;
+
+ case 1:
/* it's a decode msg, calc buffer sizes */
r = amdgpu_uvd_cs_msg_decode(msg, ctx->buf_sizes);
amdgpu_bo_kunmap(bo);
if (r)
return r;

- } else if (msg_type == 2) {
+ /* validate the handle */
+ for (i = 0; i < AMDGPU_MAX_UVD_HANDLES; ++i) {
+ if (atomic_read(&adev->uvd.handles[i]) == handle) {
+ if (adev->uvd.filp[i] != ctx->parser->filp) {
+ DRM_ERROR("UVD handle collision detected!\n");
+ return -EINVAL;
+ }
+ return 0;
+ }
+ }
+
+ DRM_ERROR("Invalid UVD handle 0x%x!\n", handle);
+ return -ENOENT;
+
+ case 2:
/* it's a destroy msg, free the handle */
for (i = 0; i < AMDGPU_MAX_UVD_HANDLES; ++i)
atomic_cmpxchg(&adev->uvd.handles[i], handle, 0);
amdgpu_bo_kunmap(bo);
return 0;
- } else {
- /* it's a create msg */
- amdgpu_bo_kunmap(bo);
-
- if (msg_type != 0) {
- DRM_ERROR("Illegal UVD message type (%d)!\n", msg_type);
- return -EINVAL;
- }
-
- /* it's a create msg, no special handling needed */
- }
-
- /* create or decode, validate the handle */
- for (i = 0; i < AMDGPU_MAX_UVD_HANDLES; ++i) {
- if (atomic_read(&adev->uvd.handles[i]) == handle)
- return 0;
- }

- /* handle not found try to alloc a new one */
- for (i = 0; i < AMDGPU_MAX_UVD_HANDLES; ++i) {
- if (!atomic_cmpxchg(&adev->uvd.handles[i], 0, handle)) {
- adev->uvd.filp[i] = ctx->parser->filp;
- return 0;
- }
+ default:
+ DRM_ERROR("Illegal UVD message type (%d)!\n", msg_type);
+ return -EINVAL;
}
-
- DRM_ERROR("No more free UVD handles!\n");
+ BUG();
return -EINVAL;
}

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 9a4e3b63f1cb..b07402fc8ded 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -787,7 +787,7 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev,
int r;

if (mem) {
- addr = mem->start << PAGE_SHIFT;
+ addr = (u64)mem->start << PAGE_SHIFT;
if (mem->mem_type != TTM_PL_TT)
addr += adev->vm_manager.vram_base_offset;
} else {
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_encoders.c b/drivers/gpu/drm/amd/amdgpu/atombios_encoders.c
index ae8caca61e04..e60557417049 100644
--- a/drivers/gpu/drm/amd/amdgpu/atombios_encoders.c
+++ b/drivers/gpu/drm/amd/amdgpu/atombios_encoders.c
@@ -1279,8 +1279,7 @@ amdgpu_atombios_encoder_setup_dig(struct drm_encoder *encoder, int action)
amdgpu_atombios_encoder_setup_dig_encoder(encoder, ATOM_ENCODER_CMD_DP_VIDEO_ON, 0);
}
if (amdgpu_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT))
- amdgpu_atombios_encoder_setup_dig_transmitter(encoder,
- ATOM_TRANSMITTER_ACTION_LCD_BLON, 0, 0);
+ amdgpu_atombios_encoder_set_backlight_level(amdgpu_encoder, dig->backlight_level);
if (ext_encoder)
amdgpu_atombios_encoder_setup_external_encoder(encoder, ext_encoder, ATOM_ENABLE);
} else {
diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c b/drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c
index 4efd671d7a9b..9488ea6ea93f 100644
--- a/drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c
+++ b/drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c
@@ -224,11 +224,11 @@ static int uvd_v4_2_suspend(void *handle)
int r;
struct amdgpu_device *adev = (struct amdgpu_device *)handle;

- r = uvd_v4_2_hw_fini(adev);
+ r = amdgpu_uvd_suspend(adev);
if (r)
return r;

- r = amdgpu_uvd_suspend(adev);
+ r = uvd_v4_2_hw_fini(adev);
if (r)
return r;

diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c
index b756bd99c0fd..d0ed998228ef 100644
--- a/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c
@@ -220,11 +220,11 @@ static int uvd_v5_0_suspend(void *handle)
int r;
struct amdgpu_device *adev = (struct amdgpu_device *)handle;

- r = uvd_v5_0_hw_fini(adev);
+ r = amdgpu_uvd_suspend(adev);
if (r)
return r;

- r = amdgpu_uvd_suspend(adev);
+ r = uvd_v5_0_hw_fini(adev);
if (r)
return r;

diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
index 49aa931b2cb4..345eb760fd5b 100644
--- a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
@@ -214,11 +214,11 @@ static int uvd_v6_0_suspend(void *handle)
int r;
struct amdgpu_device *adev = (struct amdgpu_device *)handle;

- r = uvd_v6_0_hw_fini(adev);
+ r = amdgpu_uvd_suspend(adev);
if (r)
return r;

- r = amdgpu_uvd_suspend(adev);
+ r = uvd_v6_0_hw_fini(adev);
if (r)
return r;

diff --git a/drivers/gpu/drm/amd/amdgpu/vi.c b/drivers/gpu/drm/amd/amdgpu/vi.c
index 68552da40287..4f58a1e18de6 100644
--- a/drivers/gpu/drm/amd/amdgpu/vi.c
+++ b/drivers/gpu/drm/amd/amdgpu/vi.c
@@ -1290,7 +1290,8 @@ static int vi_common_early_init(void *handle)
case CHIP_CARRIZO:
adev->has_uvd = true;
adev->cg_flags = 0;
- adev->pg_flags = AMDGPU_PG_SUPPORT_UVD | AMDGPU_PG_SUPPORT_VCE;
+ /* Disable UVD pg */
+ adev->pg_flags = /* AMDGPU_PG_SUPPORT_UVD | */AMDGPU_PG_SUPPORT_VCE;
adev->external_rev_id = adev->rev_id + 0x1;
if (amdgpu_smc_load_fw && smc_enabled)
adev->firmware.smu_load = true;
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index eb603f1defc2..969e7898a7ed 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -804,8 +804,6 @@ static void drm_dp_destroy_mst_branch_device(struct kref *kref)
struct drm_dp_mst_port *port, *tmp;
bool wake_tx = false;

- cancel_work_sync(&mstb->mgr->work);
-
/*
* destroy all ports - don't need lock
* as there are no more references to the mst branch
@@ -863,29 +861,33 @@ static void drm_dp_destroy_port(struct kref *kref)
{
struct drm_dp_mst_port *port = container_of(kref, struct drm_dp_mst_port, kref);
struct drm_dp_mst_topology_mgr *mgr = port->mgr;
+
if (!port->input) {
port->vcpi.num_slots = 0;

kfree(port->cached_edid);

- /* we can't destroy the connector here, as
- we might be holding the mode_config.mutex
- from an EDID retrieval */
+ /*
+ * The only time we don't have a connector
+ * on an output port is if the connector init
+ * fails.
+ */
if (port->connector) {
+ /* we can't destroy the connector here, as
+ * we might be holding the mode_config.mutex
+ * from an EDID retrieval */
+
mutex_lock(&mgr->destroy_connector_lock);
list_add(&port->next, &mgr->destroy_connector_list);
mutex_unlock(&mgr->destroy_connector_lock);
schedule_work(&mgr->destroy_connector_work);
return;
}
+ /* no need to clean up vcpi
+ * as if we have no connector we never setup a vcpi */
drm_dp_port_teardown_pdt(port, port->pdt);
-
- if (!port->input && port->vcpi.vcpi > 0)
- drm_dp_mst_put_payload_id(mgr, port->vcpi.vcpi);
}
kfree(port);
-
- (*mgr->cbs->hotplug)(mgr);
}

static void drm_dp_put_port(struct drm_dp_mst_port *port)
@@ -1115,12 +1117,21 @@ static void drm_dp_add_port(struct drm_dp_mst_branch *mstb,
char proppath[255];
build_mst_prop_path(port, mstb, proppath, sizeof(proppath));
port->connector = (*mstb->mgr->cbs->add_connector)(mstb->mgr, port, proppath);
-
+ if (!port->connector) {
+ /* remove it from the port list */
+ mutex_lock(&mstb->mgr->lock);
+ list_del(&port->next);
+ mutex_unlock(&mstb->mgr->lock);
+ /* drop port list reference */
+ drm_dp_put_port(port);
+ goto out;
+ }
if (port->port_num >= 8) {
port->cached_edid = drm_get_edid(port->connector, &port->aux.ddc);
}
}

+out:
/* put reference to this port */
drm_dp_put_port(port);
}
@@ -1978,6 +1989,8 @@ void drm_dp_mst_topology_mgr_suspend(struct drm_dp_mst_topology_mgr *mgr)
drm_dp_dpcd_writeb(mgr->aux, DP_MSTM_CTRL,
DP_MST_EN | DP_UPSTREAM_IS_SRC);
mutex_unlock(&mgr->lock);
+ flush_work(&mgr->work);
+ flush_work(&mgr->destroy_connector_work);
}
EXPORT_SYMBOL(drm_dp_mst_topology_mgr_suspend);

@@ -2661,7 +2674,7 @@ static void drm_dp_destroy_connector_work(struct work_struct *work)
{
struct drm_dp_mst_topology_mgr *mgr = container_of(work, struct drm_dp_mst_topology_mgr, destroy_connector_work);
struct drm_dp_mst_port *port;
-
+ bool send_hotplug = false;
/*
* Not a regular list traverse as we have to drop the destroy
* connector lock before destroying the connector, to avoid AB->BA
@@ -2684,7 +2697,10 @@ static void drm_dp_destroy_connector_work(struct work_struct *work)
if (!port->input && port->vcpi.vcpi > 0)
drm_dp_mst_put_payload_id(mgr, port->vcpi.vcpi);
kfree(port);
+ send_hotplug = true;
}
+ if (send_hotplug)
+ (*mgr->cbs->hotplug)(mgr);
}

/**
@@ -2737,6 +2753,7 @@ EXPORT_SYMBOL(drm_dp_mst_topology_mgr_init);
*/
void drm_dp_mst_topology_mgr_destroy(struct drm_dp_mst_topology_mgr *mgr)
{
+ flush_work(&mgr->work);
flush_work(&mgr->destroy_connector_work);
mutex_lock(&mgr->payload_lock);
kfree(mgr->payloads);
diff --git a/drivers/gpu/drm/drm_lock.c b/drivers/gpu/drm/drm_lock.c
index f861361a635e..4924d381b664 100644
--- a/drivers/gpu/drm/drm_lock.c
+++ b/drivers/gpu/drm/drm_lock.c
@@ -61,6 +61,9 @@ int drm_legacy_lock(struct drm_device *dev, void *data,
struct drm_master *master = file_priv->master;
int ret = 0;

+ if (drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
++file_priv->lock_count;

if (lock->context == DRM_KERNEL_CONTEXT) {
@@ -153,6 +156,9 @@ int drm_legacy_unlock(struct drm_device *dev, void *data, struct drm_file *file_
struct drm_lock *lock = data;
struct drm_master *master = file_priv->master;

+ if (drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
if (lock->context == DRM_KERNEL_CONTEXT) {
DRM_ERROR("Process %d using kernel context %d\n",
task_pid_nr(current), lock->context);
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index 198fc3c3291b..17522f733513 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -42,7 +42,7 @@ find_section(const void *_bdb, int section_id)
const struct bdb_header *bdb = _bdb;
const u8 *base = _bdb;
int index = 0;
- u16 total, current_size;
+ u32 total, current_size;
u8 current_id;

/* skip to first section */
@@ -57,6 +57,10 @@ find_section(const void *_bdb, int section_id)
current_size = *((const u16 *)(base + index));
index += 2;

+ /* The MIPI Sequence Block v3+ has a separate size field. */
+ if (current_id == BDB_MIPI_SEQUENCE && *(base + index) >= 3)
+ current_size = *((const u32 *)(base + index + 1));
+
if (index + current_size > total)
return NULL;

@@ -859,6 +863,12 @@ parse_mipi(struct drm_i915_private *dev_priv, const struct bdb_header *bdb)
return;
}

+ /* Fail gracefully for forward incompatible sequence block. */
+ if (sequence->version >= 3) {
+ DRM_ERROR("Unable to parse MIPI Sequence Block v3+\n");
+ return;
+ }
+
DRM_DEBUG_DRIVER("Found MIPI sequence block\n");

block_size = get_blocksize(sequence);
diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_display.c
index 7c6225c84ba6..4649bd2ed340 100644
--- a/drivers/gpu/drm/qxl/qxl_display.c
+++ b/drivers/gpu/drm/qxl/qxl_display.c
@@ -618,7 +618,7 @@ static int qxl_crtc_mode_set(struct drm_crtc *crtc,
adjusted_mode->hdisplay,
adjusted_mode->vdisplay);

- if (qcrtc->index == 0)
+ if (bo->is_primary == false)
recreate_primary = true;

if (bo->surf.stride * bo->surf.height > qdev->vram_size) {
@@ -886,13 +886,15 @@ static enum drm_connector_status qxl_conn_detect(
drm_connector_to_qxl_output(connector);
struct drm_device *ddev = connector->dev;
struct qxl_device *qdev = ddev->dev_private;
- int connected;
+ bool connected = false;

/* The first monitor is always connected */
- connected = (output->index == 0) ||
- (qdev->client_monitors_config &&
- qdev->client_monitors_config->count > output->index &&
- qxl_head_enabled(&qdev->client_monitors_config->heads[output->index]));
+ if (!qdev->client_monitors_config) {
+ if (output->index == 0)
+ connected = true;
+ } else
+ connected = qdev->client_monitors_config->count > output->index &&
+ qxl_head_enabled(&qdev->client_monitors_config->heads[output->index]);

DRM_DEBUG("#%d connected: %d\n", output->index, connected);
if (!connected)
diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c
index c3872598b85a..65adb9c72377 100644
--- a/drivers/gpu/drm/radeon/atombios_encoders.c
+++ b/drivers/gpu/drm/radeon/atombios_encoders.c
@@ -1624,8 +1624,9 @@ radeon_atom_encoder_dpms_avivo(struct drm_encoder *encoder, int mode)
} else
atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
- args.ucAction = ATOM_LCD_BLON;
- atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
+ struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
+
+ atombios_set_backlight_level(radeon_encoder, dig->backlight_level);
}
break;
case DRM_MODE_DPMS_STANDBY:
@@ -1706,8 +1707,7 @@ radeon_atom_encoder_dpms_dig(struct drm_encoder *encoder, int mode)
atombios_dig_encoder_setup(encoder, ATOM_ENCODER_CMD_DP_VIDEO_ON, 0);
}
if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT))
- atombios_dig_transmitter_setup(encoder,
- ATOM_TRANSMITTER_ACTION_LCD_BLON, 0, 0);
+ atombios_set_backlight_level(radeon_encoder, dig->backlight_level);
if (ext_encoder)
atombios_external_encoder_setup(encoder, ext_encoder, ATOM_ENABLE);
break;
diff --git a/drivers/hv/hv_utils_transport.c b/drivers/hv/hv_utils_transport.c
index ea7ba5ef16a9..6a9d80a5332d 100644
--- a/drivers/hv/hv_utils_transport.c
+++ b/drivers/hv/hv_utils_transport.c
@@ -186,7 +186,7 @@ int hvutil_transport_send(struct hvutil_transport *hvt, void *msg, int len)
return -EINVAL;
} else if (hvt->mode == HVUTIL_TRANSPORT_NETLINK) {
cn_msg = kzalloc(sizeof(*cn_msg) + len, GFP_ATOMIC);
- if (!msg)
+ if (!cn_msg)
return -ENOMEM;
cn_msg->id.idx = hvt->cn_id.idx;
cn_msg->id.val = hvt->cn_id.val;
diff --git a/drivers/hwmon/nct6775.c b/drivers/hwmon/nct6775.c
index bd1c99deac71..2aaedbe0b023 100644
--- a/drivers/hwmon/nct6775.c
+++ b/drivers/hwmon/nct6775.c
@@ -354,6 +354,10 @@ static const u16 NCT6775_REG_TEMP_CRIT[ARRAY_SIZE(nct6775_temp_label) - 1]

/* NCT6776 specific data */

+/* STEP_UP_TIME and STEP_DOWN_TIME regs are swapped for all chips but NCT6775 */
+#define NCT6776_REG_FAN_STEP_UP_TIME NCT6775_REG_FAN_STEP_DOWN_TIME
+#define NCT6776_REG_FAN_STEP_DOWN_TIME NCT6775_REG_FAN_STEP_UP_TIME
+
static const s8 NCT6776_ALARM_BITS[] = {
0, 1, 2, 3, 8, 21, 20, 16, /* in0.. in7 */
17, -1, -1, -1, -1, -1, -1, /* in8..in14 */
@@ -3528,8 +3532,8 @@ static int nct6775_probe(struct platform_device *pdev)
data->REG_FAN_PULSES = NCT6776_REG_FAN_PULSES;
data->FAN_PULSE_SHIFT = NCT6775_FAN_PULSE_SHIFT;
data->REG_FAN_TIME[0] = NCT6775_REG_FAN_STOP_TIME;
- data->REG_FAN_TIME[1] = NCT6775_REG_FAN_STEP_UP_TIME;
- data->REG_FAN_TIME[2] = NCT6775_REG_FAN_STEP_DOWN_TIME;
+ data->REG_FAN_TIME[1] = NCT6776_REG_FAN_STEP_UP_TIME;
+ data->REG_FAN_TIME[2] = NCT6776_REG_FAN_STEP_DOWN_TIME;
data->REG_TOLERANCE_H = NCT6776_REG_TOLERANCE_H;
data->REG_PWM[0] = NCT6775_REG_PWM;
data->REG_PWM[1] = NCT6775_REG_FAN_START_OUTPUT;
@@ -3600,8 +3604,8 @@ static int nct6775_probe(struct platform_device *pdev)
data->REG_FAN_PULSES = NCT6779_REG_FAN_PULSES;
data->FAN_PULSE_SHIFT = NCT6775_FAN_PULSE_SHIFT;
data->REG_FAN_TIME[0] = NCT6775_REG_FAN_STOP_TIME;
- data->REG_FAN_TIME[1] = NCT6775_REG_FAN_STEP_UP_TIME;
- data->REG_FAN_TIME[2] = NCT6775_REG_FAN_STEP_DOWN_TIME;
+ data->REG_FAN_TIME[1] = NCT6776_REG_FAN_STEP_UP_TIME;
+ data->REG_FAN_TIME[2] = NCT6776_REG_FAN_STEP_DOWN_TIME;
data->REG_TOLERANCE_H = NCT6776_REG_TOLERANCE_H;
data->REG_PWM[0] = NCT6775_REG_PWM;
data->REG_PWM[1] = NCT6775_REG_FAN_START_OUTPUT;
@@ -3677,8 +3681,8 @@ static int nct6775_probe(struct platform_device *pdev)
data->REG_FAN_PULSES = NCT6779_REG_FAN_PULSES;
data->FAN_PULSE_SHIFT = NCT6775_FAN_PULSE_SHIFT;
data->REG_FAN_TIME[0] = NCT6775_REG_FAN_STOP_TIME;
- data->REG_FAN_TIME[1] = NCT6775_REG_FAN_STEP_UP_TIME;
- data->REG_FAN_TIME[2] = NCT6775_REG_FAN_STEP_DOWN_TIME;
+ data->REG_FAN_TIME[1] = NCT6776_REG_FAN_STEP_UP_TIME;
+ data->REG_FAN_TIME[2] = NCT6776_REG_FAN_STEP_DOWN_TIME;
data->REG_TOLERANCE_H = NCT6776_REG_TOLERANCE_H;
data->REG_PWM[0] = NCT6775_REG_PWM;
data->REG_PWM[1] = NCT6775_REG_FAN_START_OUTPUT;
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index d851e1828d6f..85761b78bb5f 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -3012,9 +3012,16 @@ isert_get_dataout(struct iscsi_conn *conn, struct iscsi_cmd *cmd, bool recovery)
static int
isert_immediate_queue(struct iscsi_conn *conn, struct iscsi_cmd *cmd, int state)
{
- int ret;
+ struct isert_cmd *isert_cmd = iscsit_priv_cmd(cmd);
+ int ret = 0;

switch (state) {
+ case ISTATE_REMOVE:
+ spin_lock_bh(&conn->cmd_lock);
+ list_del_init(&cmd->i_conn_node);
+ spin_unlock_bh(&conn->cmd_lock);
+ isert_put_cmd(isert_cmd, true);
+ break;
case ISTATE_SEND_NOPIN_WANT_RESPONSE:
ret = isert_put_nopin(cmd, conn, false);
break;
@@ -3379,6 +3386,41 @@ isert_wait4flush(struct isert_conn *isert_conn)
wait_for_completion(&isert_conn->wait_comp_err);
}

+/**
+ * isert_put_unsol_pending_cmds() - Drop commands waiting for
+ * unsolicitate dataout
+ * @conn: iscsi connection
+ *
+ * We might still have commands that are waiting for unsolicited
+ * dataouts messages. We must put the extra reference on those
+ * before blocking on the target_wait_for_session_cmds
+ */
+static void
+isert_put_unsol_pending_cmds(struct iscsi_conn *conn)
+{
+ struct iscsi_cmd *cmd, *tmp;
+ static LIST_HEAD(drop_cmd_list);
+
+ spin_lock_bh(&conn->cmd_lock);
+ list_for_each_entry_safe(cmd, tmp, &conn->conn_cmd_list, i_conn_node) {
+ if ((cmd->cmd_flags & ICF_NON_IMMEDIATE_UNSOLICITED_DATA) &&
+ (cmd->write_data_done < conn->sess->sess_ops->FirstBurstLength) &&
+ (cmd->write_data_done < cmd->se_cmd.data_length))
+ list_move_tail(&cmd->i_conn_node, &drop_cmd_list);
+ }
+ spin_unlock_bh(&conn->cmd_lock);
+
+ list_for_each_entry_safe(cmd, tmp, &drop_cmd_list, i_conn_node) {
+ list_del_init(&cmd->i_conn_node);
+ if (cmd->i_state != ISTATE_REMOVE) {
+ struct isert_cmd *isert_cmd = iscsit_priv_cmd(cmd);
+
+ isert_info("conn %p dropping cmd %p\n", conn, cmd);
+ isert_put_cmd(isert_cmd, true);
+ }
+ }
+}
+
static void isert_wait_conn(struct iscsi_conn *conn)
{
struct isert_conn *isert_conn = conn->context;
@@ -3397,8 +3439,9 @@ static void isert_wait_conn(struct iscsi_conn *conn)
isert_conn_terminate(isert_conn);
mutex_unlock(&isert_conn->mutex);

- isert_wait4cmds(conn);
isert_wait4flush(isert_conn);
+ isert_put_unsol_pending_cmds(conn);
+ isert_wait4cmds(conn);
isert_wait4logout(isert_conn);

queue_work(isert_release_wq, &isert_conn->release_work);
diff --git a/drivers/irqchip/irq-atmel-aic5.c b/drivers/irqchip/irq-atmel-aic5.c
index 459bf4429d36..7e077bf13fe1 100644
--- a/drivers/irqchip/irq-atmel-aic5.c
+++ b/drivers/irqchip/irq-atmel-aic5.c
@@ -88,28 +88,36 @@ static void aic5_mask(struct irq_data *d)
{
struct irq_domain *domain = d->domain;
struct irq_domain_chip_generic *dgc = domain->gc;
- struct irq_chip_generic *gc = dgc->gc[0];
+ struct irq_chip_generic *bgc = dgc->gc[0];
+ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);

- /* Disable interrupt on AIC5 */
- irq_gc_lock(gc);
+ /*
+ * Disable interrupt on AIC5. We always take the lock of the
+ * first irq chip as all chips share the same registers.
+ */
+ irq_gc_lock(bgc);
irq_reg_writel(gc, d->hwirq, AT91_AIC5_SSR);
irq_reg_writel(gc, 1, AT91_AIC5_IDCR);
gc->mask_cache &= ~d->mask;
- irq_gc_unlock(gc);
+ irq_gc_unlock(bgc);
}

static void aic5_unmask(struct irq_data *d)
{
struct irq_domain *domain = d->domain;
struct irq_domain_chip_generic *dgc = domain->gc;
- struct irq_chip_generic *gc = dgc->gc[0];
+ struct irq_chip_generic *bgc = dgc->gc[0];
+ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);

- /* Enable interrupt on AIC5 */
- irq_gc_lock(gc);
+ /*
+ * Enable interrupt on AIC5. We always take the lock of the
+ * first irq chip as all chips share the same registers.
+ */
+ irq_gc_lock(bgc);
irq_reg_writel(gc, d->hwirq, AT91_AIC5_SSR);
irq_reg_writel(gc, 1, AT91_AIC5_IECR);
gc->mask_cache |= d->mask;
- irq_gc_unlock(gc);
+ irq_gc_unlock(bgc);
}

static int aic5_retrigger(struct irq_data *d)
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index c00e2db351ba..9a791dd52199 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -921,8 +921,10 @@ retry_baser:
* non-cacheable as well.
*/
shr = tmp & GITS_BASER_SHAREABILITY_MASK;
- if (!shr)
+ if (!shr) {
cache = GITS_BASER_nC;
+ __flush_dcache_area(base, alloc_size);
+ }
goto retry_baser;
}

@@ -1163,6 +1165,8 @@ static struct its_device *its_create_device(struct its_node *its, u32 dev_id,
return NULL;
}

+ __flush_dcache_area(itt, sz);
+
dev->its = its;
dev->itt = itt;
dev->nr_ites = nr_ites;
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 9ad35f72ab4c..433fb9df848a 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -229,7 +229,7 @@ config LEDS_LP55XX_COMMON
tristate "Common Driver for TI/National LP5521/5523/55231/5562/8501"
depends on LEDS_LP5521 || LEDS_LP5523 || LEDS_LP5562 || LEDS_LP8501
select FW_LOADER
- select FW_LOADER_USER_HELPER_FALLBACK
+ select FW_LOADER_USER_HELPER
help
This option supports common operations for LP5521/5523/55231/5562/8501
devices.
diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
index beabfbc6f7cd..ca51d58bed24 100644
--- a/drivers/leds/led-class.c
+++ b/drivers/leds/led-class.c
@@ -228,12 +228,15 @@ static int led_classdev_next_name(const char *init_name, char *name,
{
unsigned int i = 0;
int ret = 0;
+ struct device *dev;

strlcpy(name, init_name, len);

- while (class_find_device(leds_class, NULL, name, match_name) &&
- (ret < len))
+ while ((ret < len) &&
+ (dev = class_find_device(leds_class, NULL, name, match_name))) {
+ put_device(dev);
ret = snprintf(name, len, "%s_%u", init_name, ++i);
+ }

if (ret >= len)
return -ENOMEM;
diff --git a/drivers/macintosh/windfarm_core.c b/drivers/macintosh/windfarm_core.c
index 3ee198b65843..cc7ece1712b5 100644
--- a/drivers/macintosh/windfarm_core.c
+++ b/drivers/macintosh/windfarm_core.c
@@ -435,7 +435,7 @@ int wf_unregister_client(struct notifier_block *nb)
{
mutex_lock(&wf_lock);
blocking_notifier_chain_unregister(&wf_client_list, nb);
- wf_client_count++;
+ wf_client_count--;
if (wf_client_count == 0)
wf_stop_thread();
mutex_unlock(&wf_lock);
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index e51de52eeb94..48b5890c28e3 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -1997,7 +1997,8 @@ int bitmap_resize(struct bitmap *bitmap, sector_t blocks,
if (bitmap->mddev->bitmap_info.offset || bitmap->mddev->bitmap_info.file)
ret = bitmap_storage_alloc(&store, chunks,
!bitmap->mddev->bitmap_info.external,
- bitmap->cluster_slot);
+ mddev_is_clustered(bitmap->mddev)
+ ? bitmap->cluster_slot : 0);
if (ret)
goto err;

diff --git a/drivers/md/dm-cache-policy-cleaner.c b/drivers/md/dm-cache-policy-cleaner.c
index 240c9f0e85e7..8a096456579b 100644
--- a/drivers/md/dm-cache-policy-cleaner.c
+++ b/drivers/md/dm-cache-policy-cleaner.c
@@ -436,7 +436,7 @@ static struct dm_cache_policy *wb_create(dm_cblock_t cache_size,
static struct dm_cache_policy_type wb_policy_type = {
.name = "cleaner",
.version = {1, 0, 0},
- .hint_size = 0,
+ .hint_size = 4,
.owner = THIS_MODULE,
.create = wb_create
};
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 0f48fed44a17..0d28c5b9d065 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -968,7 +968,8 @@ static void crypt_free_buffer_pages(struct crypt_config *cc, struct bio *clone);

/*
* Generate a new unfragmented bio with the given size
- * This should never violate the device limitations
+ * This should never violate the device limitations (but only because
+ * max_segment_size is being constrained to PAGE_SIZE).
*
* This function may be called concurrently. If we allocate from the mempool
* concurrently, there is a possibility of deadlock. For example, if we have
@@ -2058,9 +2059,20 @@ static int crypt_iterate_devices(struct dm_target *ti,
return fn(ti, cc->dev, cc->start, ti->len, data);
}

+static void crypt_io_hints(struct dm_target *ti, struct queue_limits *limits)
+{
+ /*
+ * Unfortunate constraint that is required to avoid the potential
+ * for exceeding underlying device's max_segments limits -- due to
+ * crypt_alloc_buffer() possibly allocating pages for the encryption
+ * bio that are not as physically contiguous as the original bio.
+ */
+ limits->max_segment_size = PAGE_SIZE;
+}
+
static struct target_type crypt_target = {
.name = "crypt",
- .version = {1, 14, 0},
+ .version = {1, 14, 1},
.module = THIS_MODULE,
.ctr = crypt_ctr,
.dtr = crypt_dtr,
@@ -2072,6 +2084,7 @@ static struct target_type crypt_target = {
.message = crypt_message,
.merge = crypt_merge,
.iterate_devices = crypt_iterate_devices,
+ .io_hints = crypt_io_hints,
};

static int __init dm_crypt_init(void)
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index 2daa67793511..1257d484392a 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -329,8 +329,7 @@ static int validate_region_size(struct raid_set *rs, unsigned long region_size)
*/
if (min_region_size > (1 << 13)) {
/* If not a power of 2, make it the next power of 2 */
- if (min_region_size & (min_region_size - 1))
- region_size = 1 << fls(region_size);
+ region_size = roundup_pow_of_two(min_region_size);
DMINFO("Choosing default region size of %lu sectors",
region_size);
} else {
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index d2bbe8cc1e97..75aef240c2d1 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -4333,6 +4333,10 @@ static void thin_io_hints(struct dm_target *ti, struct queue_limits *limits)
{
struct thin_c *tc = ti->private;
struct pool *pool = tc->pool;
+ struct queue_limits *pool_limits = dm_get_queue_limits(pool->pool_md);
+
+ if (!pool_limits->discard_granularity)
+ return; /* pool's discard support is disabled */

limits->discard_granularity = pool->sectors_per_block << SECTOR_SHIFT;
limits->max_discard_sectors = 2048 * 1024 * 16; /* 16G */
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 0d7ab20c58df..3e32f4e31bbb 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -2952,8 +2952,6 @@ static void __dm_destroy(struct mapped_device *md, bool wait)

might_sleep();

- map = dm_get_live_table(md, &srcu_idx);
-
spin_lock(&_minor_lock);
idr_replace(&_minor_idr, MINOR_ALLOCED, MINOR(disk_devt(dm_disk(md))));
set_bit(DMF_FREEING, &md->flags);
@@ -2967,14 +2965,14 @@ static void __dm_destroy(struct mapped_device *md, bool wait)
* do not race with internal suspend.
*/
mutex_lock(&md->suspend_lock);
+ map = dm_get_live_table(md, &srcu_idx);
if (!dm_suspended_md(md)) {
dm_table_presuspend_targets(map);
dm_table_postsuspend_targets(map);
}
- mutex_unlock(&md->suspend_lock);
-
/* dm_put_live_table must be before msleep, otherwise deadlock is possible */
dm_put_live_table(md, srcu_idx);
+ mutex_unlock(&md->suspend_lock);

/*
* Rare, but there may be I/O requests still going to complete,
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index efb654eb5399..0875e5e7e09a 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -83,7 +83,7 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
char b[BDEVNAME_SIZE];
char b2[BDEVNAME_SIZE];
struct r0conf *conf = kzalloc(sizeof(*conf), GFP_KERNEL);
- bool discard_supported = false;
+ unsigned short blksize = 512;

if (!conf)
return -ENOMEM;
@@ -98,6 +98,9 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
sector_div(sectors, mddev->chunk_sectors);
rdev1->sectors = sectors * mddev->chunk_sectors;

+ blksize = max(blksize, queue_logical_block_size(
+ rdev1->bdev->bd_disk->queue));
+
rdev_for_each(rdev2, mddev) {
pr_debug("md/raid0:%s: comparing %s(%llu)"
" with %s(%llu)\n",
@@ -134,6 +137,18 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
}
pr_debug("md/raid0:%s: FINAL %d zones\n",
mdname(mddev), conf->nr_strip_zones);
+ /*
+ * now since we have the hard sector sizes, we can make sure
+ * chunk size is a multiple of that sector size
+ */
+ if ((mddev->chunk_sectors << 9) % blksize) {
+ printk(KERN_ERR "md/raid0:%s: chunk_size of %d not multiple of block size %d\n",
+ mdname(mddev),
+ mddev->chunk_sectors << 9, blksize);
+ err = -EINVAL;
+ goto abort;
+ }
+
err = -ENOMEM;
conf->strip_zone = kzalloc(sizeof(struct strip_zone)*
conf->nr_strip_zones, GFP_KERNEL);
@@ -188,19 +203,12 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
}
dev[j] = rdev1;

- if (mddev->queue)
- disk_stack_limits(mddev->gendisk, rdev1->bdev,
- rdev1->data_offset << 9);
-
if (rdev1->bdev->bd_disk->queue->merge_bvec_fn)
conf->has_merge_bvec = 1;

if (!smallest || (rdev1->sectors < smallest->sectors))
smallest = rdev1;
cnt++;
-
- if (blk_queue_discard(bdev_get_queue(rdev1->bdev)))
- discard_supported = true;
}
if (cnt != mddev->raid_disks) {
printk(KERN_ERR "md/raid0:%s: too few disks (%d of %d) - "
@@ -261,28 +269,6 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
(unsigned long long)smallest->sectors);
}

- /*
- * now since we have the hard sector sizes, we can make sure
- * chunk size is a multiple of that sector size
- */
- if ((mddev->chunk_sectors << 9) % queue_logical_block_size(mddev->queue)) {
- printk(KERN_ERR "md/raid0:%s: chunk_size of %d not valid\n",
- mdname(mddev),
- mddev->chunk_sectors << 9);
- goto abort;
- }
-
- if (mddev->queue) {
- blk_queue_io_min(mddev->queue, mddev->chunk_sectors << 9);
- blk_queue_io_opt(mddev->queue,
- (mddev->chunk_sectors << 9) * mddev->raid_disks);
-
- if (!discard_supported)
- queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, mddev->queue);
- else
- queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, mddev->queue);
- }
-
pr_debug("md/raid0:%s: done.\n", mdname(mddev));
*private_conf = conf;

@@ -433,12 +419,6 @@ static int raid0_run(struct mddev *mddev)
if (md_check_no_bitmap(mddev))
return -EINVAL;

- if (mddev->queue) {
- blk_queue_max_hw_sectors(mddev->queue, mddev->chunk_sectors);
- blk_queue_max_write_same_sectors(mddev->queue, mddev->chunk_sectors);
- blk_queue_max_discard_sectors(mddev->queue, mddev->chunk_sectors);
- }
-
/* if private is not null, we are here after takeover */
if (mddev->private == NULL) {
ret = create_strip_zones(mddev, &conf);
@@ -447,6 +427,29 @@ static int raid0_run(struct mddev *mddev)
mddev->private = conf;
}
conf = mddev->private;
+ if (mddev->queue) {
+ struct md_rdev *rdev;
+ bool discard_supported = false;
+
+ blk_queue_max_hw_sectors(mddev->queue, mddev->chunk_sectors);
+ blk_queue_max_write_same_sectors(mddev->queue, mddev->chunk_sectors);
+ blk_queue_max_discard_sectors(mddev->queue, mddev->chunk_sectors);
+
+ blk_queue_io_min(mddev->queue, mddev->chunk_sectors << 9);
+ blk_queue_io_opt(mddev->queue,
+ (mddev->chunk_sectors << 9) * mddev->raid_disks);
+
+ rdev_for_each(rdev, mddev) {
+ disk_stack_limits(mddev->gendisk, rdev->bdev,
+ rdev->data_offset << 9);
+ if (blk_queue_discard(bdev_get_queue(rdev->bdev)))
+ discard_supported = true;
+ }
+ if (!discard_supported)
+ queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, mddev->queue);
+ else
+ queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, mddev->queue);
+ }

/* calculate array device size */
md_set_array_sectors(mddev, raid0_size(mddev, 0, 0));
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 9e3fdbdc4037..2f4503a7f315 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -134,9 +134,11 @@ void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq)
int err = cmd->error;

/* Flag re-tuning needed on CRC errors */
- if (err == -EILSEQ || (mrq->sbc && mrq->sbc->error == -EILSEQ) ||
+ if ((cmd->opcode != MMC_SEND_TUNING_BLOCK &&
+ cmd->opcode != MMC_SEND_TUNING_BLOCK_HS200) &&
+ (err == -EILSEQ || (mrq->sbc && mrq->sbc->error == -EILSEQ) ||
(mrq->data && mrq->data->error == -EILSEQ) ||
- (mrq->stop && mrq->stop->error == -EILSEQ))
+ (mrq->stop && mrq->stop->error == -EILSEQ)))
mmc_retune_needed(host);

if (err && cmd->retries && mmc_host_is_spi(host)) {
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index 99a9c9011c50..79979e9d5a09 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -457,7 +457,7 @@ int mmc_of_parse(struct mmc_host *host)
0, &cd_gpio_invert);
if (!ret)
dev_info(host->parent, "Got CD GPIO\n");
- else if (ret != -ENOENT)
+ else if (ret != -ENOENT && ret != -ENOSYS)
return ret;

/*
@@ -481,7 +481,7 @@ int mmc_of_parse(struct mmc_host *host)
ret = mmc_gpiod_request_ro(host, "wp", 0, false, 0, &ro_gpio_invert);
if (!ret)
dev_info(host->parent, "Got WP GPIO\n");
- else if (ret != -ENOENT)
+ else if (ret != -ENOENT && ret != -ENOSYS)
return ret;

if (of_property_read_bool(np, "disable-wp"))
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 40e9d8e45f25..e41fb7405426 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -99,6 +99,9 @@ struct idmac_desc {

__le32 des3; /* buffer 2 physical address */
};
+
+/* Each descriptor can transfer up to 4KB of data in chained mode */
+#define DW_MCI_DESC_DATA_LENGTH 0x1000
#endif /* CONFIG_MMC_DW_IDMAC */

static bool dw_mci_reset(struct dw_mci *host);
@@ -462,66 +465,96 @@ static void dw_mci_idmac_complete_dma(struct dw_mci *host)
static void dw_mci_translate_sglist(struct dw_mci *host, struct mmc_data *data,
unsigned int sg_len)
{
+ unsigned int desc_len;
int i;
if (host->dma_64bit_address == 1) {
- struct idmac_desc_64addr *desc = host->sg_cpu;
+ struct idmac_desc_64addr *desc_first, *desc_last, *desc;
+
+ desc_first = desc_last = desc = host->sg_cpu;

- for (i = 0; i < sg_len; i++, desc++) {
+ for (i = 0; i < sg_len; i++) {
unsigned int length = sg_dma_len(&data->sg[i]);
u64 mem_addr = sg_dma_address(&data->sg[i]);

- /*
- * Set the OWN bit and disable interrupts for this
- * descriptor
- */
- desc->des0 = IDMAC_DES0_OWN | IDMAC_DES0_DIC |
- IDMAC_DES0_CH;
- /* Buffer length */
- IDMAC_64ADDR_SET_BUFFER1_SIZE(desc, length);
-
- /* Physical address to DMA to/from */
- desc->des4 = mem_addr & 0xffffffff;
- desc->des5 = mem_addr >> 32;
+ for ( ; length ; desc++) {
+ desc_len = (length <= DW_MCI_DESC_DATA_LENGTH) ?
+ length : DW_MCI_DESC_DATA_LENGTH;
+
+ length -= desc_len;
+
+ /*
+ * Set the OWN bit and disable interrupts
+ * for this descriptor
+ */
+ desc->des0 = IDMAC_DES0_OWN | IDMAC_DES0_DIC |
+ IDMAC_DES0_CH;
+
+ /* Buffer length */
+ IDMAC_64ADDR_SET_BUFFER1_SIZE(desc, desc_len);
+
+ /* Physical address to DMA to/from */
+ desc->des4 = mem_addr & 0xffffffff;
+ desc->des5 = mem_addr >> 32;
+
+ /* Update physical address for the next desc */
+ mem_addr += desc_len;
+
+ /* Save pointer to the last descriptor */
+ desc_last = desc;
+ }
}

/* Set first descriptor */
- desc = host->sg_cpu;
- desc->des0 |= IDMAC_DES0_FD;
+ desc_first->des0 |= IDMAC_DES0_FD;

/* Set last descriptor */
- desc = host->sg_cpu + (i - 1) *
- sizeof(struct idmac_desc_64addr);
- desc->des0 &= ~(IDMAC_DES0_CH | IDMAC_DES0_DIC);
- desc->des0 |= IDMAC_DES0_LD;
+ desc_last->des0 &= ~(IDMAC_DES0_CH | IDMAC_DES0_DIC);
+ desc_last->des0 |= IDMAC_DES0_LD;

} else {
- struct idmac_desc *desc = host->sg_cpu;
+ struct idmac_desc *desc_first, *desc_last, *desc;
+
+ desc_first = desc_last = desc = host->sg_cpu;

- for (i = 0; i < sg_len; i++, desc++) {
+ for (i = 0; i < sg_len; i++) {
unsigned int length = sg_dma_len(&data->sg[i]);
u32 mem_addr = sg_dma_address(&data->sg[i]);

- /*
- * Set the OWN bit and disable interrupts for this
- * descriptor
- */
- desc->des0 = cpu_to_le32(IDMAC_DES0_OWN |
- IDMAC_DES0_DIC | IDMAC_DES0_CH);
- /* Buffer length */
- IDMAC_SET_BUFFER1_SIZE(desc, length);
+ for ( ; length ; desc++) {
+ desc_len = (length <= DW_MCI_DESC_DATA_LENGTH) ?
+ length : DW_MCI_DESC_DATA_LENGTH;
+
+ length -= desc_len;
+
+ /*
+ * Set the OWN bit and disable interrupts
+ * for this descriptor
+ */
+ desc->des0 = cpu_to_le32(IDMAC_DES0_OWN |
+ IDMAC_DES0_DIC |
+ IDMAC_DES0_CH);
+
+ /* Buffer length */
+ IDMAC_SET_BUFFER1_SIZE(desc, desc_len);

- /* Physical address to DMA to/from */
- desc->des2 = cpu_to_le32(mem_addr);
+ /* Physical address to DMA to/from */
+ desc->des2 = cpu_to_le32(mem_addr);
+
+ /* Update physical address for the next desc */
+ mem_addr += desc_len;
+
+ /* Save pointer to the last descriptor */
+ desc_last = desc;
+ }
}

/* Set first descriptor */
- desc = host->sg_cpu;
- desc->des0 |= cpu_to_le32(IDMAC_DES0_FD);
+ desc_first->des0 |= cpu_to_le32(IDMAC_DES0_FD);

/* Set last descriptor */
- desc = host->sg_cpu + (i - 1) * sizeof(struct idmac_desc);
- desc->des0 &= cpu_to_le32(~(IDMAC_DES0_CH | IDMAC_DES0_DIC));
- desc->des0 |= cpu_to_le32(IDMAC_DES0_LD);
+ desc_last->des0 &= cpu_to_le32(~(IDMAC_DES0_CH |
+ IDMAC_DES0_DIC));
+ desc_last->des0 |= cpu_to_le32(IDMAC_DES0_LD);
}

wmb();
@@ -2394,7 +2427,7 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
#ifdef CONFIG_MMC_DW_IDMAC
mmc->max_segs = host->ring_size;
mmc->max_blk_size = 65536;
- mmc->max_seg_size = 0x1000;
+ mmc->max_seg_size = DW_MCI_DESC_DATA_LENGTH;
mmc->max_req_size = mmc->max_seg_size * host->ring_size;
mmc->max_blk_count = mmc->max_req_size / 512;
#else
diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
index 946d37f94a31..f5edf9d3a18a 100644
--- a/drivers/mmc/host/sdhci-pxav3.c
+++ b/drivers/mmc/host/sdhci-pxav3.c
@@ -135,6 +135,7 @@ static int armada_38x_quirks(struct platform_device *pdev,
struct sdhci_pxa *pxa = pltfm_host->priv;
struct resource *res;

+ host->quirks &= ~SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN;
host->quirks |= SDHCI_QUIRK_MISSING_CAPS;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
"conf-sdio3");
@@ -290,6 +291,9 @@ static void pxav3_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs)
uhs == MMC_TIMING_UHS_DDR50) {
reg_val &= ~SDIO3_CONF_CLK_INV;
reg_val |= SDIO3_CONF_SD_FB_CLK;
+ } else if (uhs == MMC_TIMING_MMC_HS) {
+ reg_val &= ~SDIO3_CONF_CLK_INV;
+ reg_val &= ~SDIO3_CONF_SD_FB_CLK;
} else {
reg_val |= SDIO3_CONF_CLK_INV;
reg_val &= ~SDIO3_CONF_SD_FB_CLK;
@@ -398,7 +402,7 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
if (of_device_is_compatible(np, "marvell,armada-380-sdhci")) {
ret = armada_38x_quirks(pdev, host);
if (ret < 0)
- goto err_clk_get;
+ goto err_mbus_win;
ret = mv_conf_mbus_windows(pdev, mv_mbus_dram_info());
if (ret < 0)
goto err_mbus_win;
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index 1259cc558ce9..5465fa439c9e 100644
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -1473,6 +1473,9 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd)
if (pdata->keep_config && !pxa3xx_nand_detect_config(info))
goto KEEP_CONFIG;

+ /* Set a default chunk size */
+ info->chunk_size = 512;
+
ret = pxa3xx_nand_sensing(info);
if (ret) {
dev_info(&info->pdev->dev, "There is no chip on cs %d!\n",
diff --git a/drivers/mtd/nand/sunxi_nand.c b/drivers/mtd/nand/sunxi_nand.c
index 6f93b2990d25..499b8e433d3d 100644
--- a/drivers/mtd/nand/sunxi_nand.c
+++ b/drivers/mtd/nand/sunxi_nand.c
@@ -138,6 +138,10 @@
#define NFC_ECC_MODE GENMASK(15, 12)
#define NFC_RANDOM_SEED GENMASK(30, 16)

+/* NFC_USER_DATA helper macros */
+#define NFC_BUF_TO_USER_DATA(buf) ((buf)[0] | ((buf)[1] << 8) | \
+ ((buf)[2] << 16) | ((buf)[3] << 24))
+
#define NFC_DEFAULT_TIMEOUT_MS 1000

#define NFC_SRAM_SIZE 1024
@@ -632,15 +636,9 @@ static int sunxi_nfc_hw_ecc_write_page(struct mtd_info *mtd,
offset = layout->eccpos[i * ecc->bytes] - 4 + mtd->writesize;

/* Fill OOB data in */
- if (oob_required) {
- tmp = 0xffffffff;
- memcpy_toio(nfc->regs + NFC_REG_USER_DATA_BASE, &tmp,
- 4);
- } else {
- memcpy_toio(nfc->regs + NFC_REG_USER_DATA_BASE,
- chip->oob_poi + offset - mtd->writesize,
- 4);
- }
+ writel(NFC_BUF_TO_USER_DATA(chip->oob_poi +
+ layout->oobfree[i].offset),
+ nfc->regs + NFC_REG_USER_DATA_BASE);

chip->cmdfunc(mtd, NAND_CMD_RNDIN, offset, -1);

@@ -770,14 +768,8 @@ static int sunxi_nfc_hw_syndrome_ecc_write_page(struct mtd_info *mtd,
offset += ecc->size;

/* Fill OOB data in */
- if (oob_required) {
- tmp = 0xffffffff;
- memcpy_toio(nfc->regs + NFC_REG_USER_DATA_BASE, &tmp,
- 4);
- } else {
- memcpy_toio(nfc->regs + NFC_REG_USER_DATA_BASE, oob,
- 4);
- }
+ writel(NFC_BUF_TO_USER_DATA(oob),
+ nfc->regs + NFC_REG_USER_DATA_BASE);

tmp = NFC_DATA_TRANS | NFC_DATA_SWAP_METHOD | NFC_ACCESS_DIR |
(1 << 30);
@@ -1312,6 +1304,7 @@ static void sunxi_nand_chips_cleanup(struct sunxi_nfc *nfc)
node);
nand_release(&chip->mtd);
sunxi_nand_ecc_cleanup(&chip->nand.ecc);
+ list_del(&chip->node);
}
}

diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c
index 5bbd1f094f4e..1fc23e48fe8e 100644
--- a/drivers/mtd/ubi/io.c
+++ b/drivers/mtd/ubi/io.c
@@ -926,6 +926,11 @@ static int validate_vid_hdr(const struct ubi_device *ubi,
goto bad;
}

+ if (data_size > ubi->leb_size) {
+ ubi_err(ubi, "bad data_size");
+ goto bad;
+ }
+
if (vol_type == UBI_VID_STATIC) {
/*
* Although from high-level point of view static volumes may
diff --git a/drivers/mtd/ubi/vtbl.c b/drivers/mtd/ubi/vtbl.c
index 80bdd5b88bac..d85c19762160 100644
--- a/drivers/mtd/ubi/vtbl.c
+++ b/drivers/mtd/ubi/vtbl.c
@@ -649,6 +649,7 @@ static int init_volumes(struct ubi_device *ubi,
if (ubi->corr_peb_count)
ubi_err(ubi, "%d PEBs are corrupted and not used",
ubi->corr_peb_count);
+ return -ENOSPC;
}
ubi->rsvd_pebs += reserved_pebs;
ubi->avail_pebs -= reserved_pebs;
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 275d9fb6fe5c..eb4489f9082f 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -1601,6 +1601,7 @@ int ubi_wl_init(struct ubi_device *ubi, struct ubi_attach_info *ai)
if (ubi->corr_peb_count)
ubi_err(ubi, "%d PEBs are corrupted and not used",
ubi->corr_peb_count);
+ err = -ENOSPC;
goto out_free;
}
ubi->avail_pebs -= reserved_pebs;
diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index 89d788d8f263..adfe1de78d99 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -4280,18 +4280,29 @@ static cycle_t e1000e_cyclecounter_read(const struct cyclecounter *cc)
struct e1000_adapter *adapter = container_of(cc, struct e1000_adapter,
cc);
struct e1000_hw *hw = &adapter->hw;
+ u32 systimel_1, systimel_2, systimeh;
cycle_t systim, systim_next;
- /* SYSTIMH latching upon SYSTIML read does not work well. To fix that
- * we don't want to allow overflow of SYSTIML and a change to SYSTIMH
- * to occur between reads, so if we read a vale close to overflow, we
- * wait for overflow to occur and read both registers when its safe.
+ /* SYSTIMH latching upon SYSTIML read does not work well.
+ * This means that if SYSTIML overflows after we read it but before
+ * we read SYSTIMH, the value of SYSTIMH has been incremented and we
+ * will experience a huge non linear increment in the systime value
+ * to fix that we test for overflow and if true, we re-read systime.
*/
- u32 systim_overflow_latch_fix = 0x3FFFFFFF;
-
- do {
- systim = (cycle_t)er32(SYSTIML);
- } while (systim > systim_overflow_latch_fix);
- systim |= (cycle_t)er32(SYSTIMH) << 32;
+ systimel_1 = er32(SYSTIML);
+ systimeh = er32(SYSTIMH);
+ systimel_2 = er32(SYSTIML);
+ /* Check for overflow. If there was no overflow, use the values */
+ if (systimel_1 < systimel_2) {
+ systim = (cycle_t)systimel_1;
+ systim |= (cycle_t)systimeh << 32;
+ } else {
+ /* There was an overflow, read again SYSTIMH, and use
+ * systimel_2
+ */
+ systimeh = er32(SYSTIMH);
+ systim = (cycle_t)systimel_2;
+ systim |= (cycle_t)systimeh << 32;
+ }

if ((hw->mac.type == e1000_82574) || (hw->mac.type == e1000_82583)) {
u64 incvalue, time_delta, rem, temp;
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 8d7b59689722..5bc9fca67957 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -2851,7 +2851,7 @@ static void igb_probe_vfs(struct igb_adapter *adapter)
return;

pci_sriov_set_totalvfs(pdev, 7);
- igb_pci_enable_sriov(pdev, max_vfs);
+ igb_enable_sriov(pdev, max_vfs);

#endif /* CONFIG_PCI_IOV */
}
diff --git a/drivers/net/ethernet/via/Kconfig b/drivers/net/ethernet/via/Kconfig
index 2f1264b882b9..d3d094742a7e 100644
--- a/drivers/net/ethernet/via/Kconfig
+++ b/drivers/net/ethernet/via/Kconfig
@@ -17,7 +17,7 @@ if NET_VENDOR_VIA

config VIA_RHINE
tristate "VIA Rhine support"
- depends on (PCI || OF_IRQ)
+ depends on PCI || (OF_IRQ && GENERIC_PCI_IOMAP)
depends on HAS_DMA
select CRC32
select MII
diff --git a/drivers/net/wireless/ath/ath10k/htc.c b/drivers/net/wireless/ath/ath10k/htc.c
index 85bfa2acb801..32d9ff1b19dc 100644
--- a/drivers/net/wireless/ath/ath10k/htc.c
+++ b/drivers/net/wireless/ath/ath10k/htc.c
@@ -145,8 +145,10 @@ int ath10k_htc_send(struct ath10k_htc *htc,
skb_cb->eid = eid;
skb_cb->paddr = dma_map_single(dev, skb->data, skb->len, DMA_TO_DEVICE);
ret = dma_mapping_error(dev, skb_cb->paddr);
- if (ret)
+ if (ret) {
+ ret = -EIO;
goto err_credits;
+ }

sg_item.transfer_id = ep->eid;
sg_item.transfer_context = skb;
diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c
index a60ef7d1d5fc..7be3ce6e0ffa 100644
--- a/drivers/net/wireless/ath/ath10k/htt_tx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_tx.c
@@ -371,8 +371,10 @@ int ath10k_htt_mgmt_tx(struct ath10k_htt *htt, struct sk_buff *msdu)
skb_cb->paddr = dma_map_single(dev, msdu->data, msdu->len,
DMA_TO_DEVICE);
res = dma_mapping_error(dev, skb_cb->paddr);
- if (res)
+ if (res) {
+ res = -EIO;
goto err_free_txdesc;
+ }

skb_put(txdesc, len);
cmd = (struct htt_cmd *)txdesc->data;
@@ -456,8 +458,10 @@ int ath10k_htt_tx(struct ath10k_htt *htt, struct sk_buff *msdu)
skb_cb->paddr = dma_map_single(dev, msdu->data, msdu->len,
DMA_TO_DEVICE);
res = dma_mapping_error(dev, skb_cb->paddr);
- if (res)
+ if (res) {
+ res = -EIO;
goto err_free_txbuf;
+ }

switch (skb_cb->txmode) {
case ATH10K_HW_TXRX_RAW:
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index 218b6af63447..0d3c474ff76d 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -591,11 +591,19 @@ ath10k_mac_get_any_chandef_iter(struct ieee80211_hw *hw,
static int ath10k_peer_create(struct ath10k *ar, u32 vdev_id, const u8 *addr,
enum wmi_peer_type peer_type)
{
+ struct ath10k_vif *arvif;
+ int num_peers = 0;
int ret;

lockdep_assert_held(&ar->conf_mutex);

- if (ar->num_peers >= ar->max_num_peers)
+ num_peers = ar->num_peers;
+
+ /* Each vdev consumes a peer entry as well */
+ list_for_each_entry(arvif, &ar->arvifs, list)
+ num_peers++;
+
+ if (num_peers >= ar->max_num_peers)
return -ENOBUFS;

ret = ath10k_wmi_peer_create(ar, vdev_id, addr, peer_type);
@@ -2995,6 +3003,8 @@ void ath10k_mac_tx_unlock(struct ath10k *ar, int reason)
IEEE80211_IFACE_ITER_RESUME_ALL,
ath10k_mac_tx_unlock_iter,
ar);
+
+ ieee80211_wake_queue(ar->hw, ar->hw->offchannel_tx_hw_queue);
}

void ath10k_mac_vif_tx_lock(struct ath10k_vif *arvif, int reason)
@@ -3034,38 +3044,16 @@ static void ath10k_mac_vif_handle_tx_pause(struct ath10k_vif *arvif,

lockdep_assert_held(&ar->htt.tx_lock);

- switch (pause_id) {
- case WMI_TLV_TX_PAUSE_ID_MCC:
- case WMI_TLV_TX_PAUSE_ID_P2P_CLI_NOA:
- case WMI_TLV_TX_PAUSE_ID_P2P_GO_PS:
- case WMI_TLV_TX_PAUSE_ID_AP_PS:
- case WMI_TLV_TX_PAUSE_ID_IBSS_PS:
- switch (action) {
- case WMI_TLV_TX_PAUSE_ACTION_STOP:
- ath10k_mac_vif_tx_lock(arvif, pause_id);
- break;
- case WMI_TLV_TX_PAUSE_ACTION_WAKE:
- ath10k_mac_vif_tx_unlock(arvif, pause_id);
- break;
- default:
- ath10k_warn(ar, "received unknown tx pause action %d on vdev %i, ignoring\n",
- action, arvif->vdev_id);
- break;
- }
+ switch (action) {
+ case WMI_TLV_TX_PAUSE_ACTION_STOP:
+ ath10k_mac_vif_tx_lock(arvif, pause_id);
+ break;
+ case WMI_TLV_TX_PAUSE_ACTION_WAKE:
+ ath10k_mac_vif_tx_unlock(arvif, pause_id);
break;
- case WMI_TLV_TX_PAUSE_ID_AP_PEER_PS:
- case WMI_TLV_TX_PAUSE_ID_AP_PEER_UAPSD:
- case WMI_TLV_TX_PAUSE_ID_STA_ADD_BA:
- case WMI_TLV_TX_PAUSE_ID_HOST:
default:
- /* FIXME: Some pause_ids aren't vdev specific. Instead they
- * target peer_id and tid. Implementing these could improve
- * traffic scheduling fairness across multiple connected
- * stations in AP/IBSS modes.
- */
- ath10k_dbg(ar, ATH10K_DBG_MAC,
- "mac ignoring unsupported tx pause vdev %i id %d\n",
- arvif->vdev_id, pause_id);
+ ath10k_warn(ar, "received unknown tx pause action %d on vdev %i, ignoring\n",
+ action, arvif->vdev_id);
break;
}
}
@@ -3082,12 +3070,15 @@ static void ath10k_mac_handle_tx_pause_iter(void *data, u8 *mac,
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
struct ath10k_mac_tx_pause *arg = data;

+ if (arvif->vdev_id != arg->vdev_id)
+ return;
+
ath10k_mac_vif_handle_tx_pause(arvif, arg->pause_id, arg->action);
}

-void ath10k_mac_handle_tx_pause(struct ath10k *ar, u32 vdev_id,
- enum wmi_tlv_tx_pause_id pause_id,
- enum wmi_tlv_tx_pause_action action)
+void ath10k_mac_handle_tx_pause_vdev(struct ath10k *ar, u32 vdev_id,
+ enum wmi_tlv_tx_pause_id pause_id,
+ enum wmi_tlv_tx_pause_action action)
{
struct ath10k_mac_tx_pause arg = {
.vdev_id = vdev_id,
@@ -4080,6 +4071,11 @@ static int ath10k_add_interface(struct ieee80211_hw *hw,
sizeof(arvif->bitrate_mask.control[i].vht_mcs));
}

+ if (ar->num_peers >= ar->max_num_peers) {
+ ath10k_warn(ar, "refusing vdev creation due to insufficient peer entry resources in firmware\n");
+ return -ENOBUFS;
+ }
+
if (ar->free_vdev_map == 0) {
ath10k_warn(ar, "Free vdev map is empty, no more interfaces allowed.\n");
ret = -EBUSY;
@@ -4287,6 +4283,11 @@ static int ath10k_add_interface(struct ieee80211_hw *hw,
}
}

+ spin_lock_bh(&ar->htt.tx_lock);
+ if (!ar->tx_paused)
+ ieee80211_wake_queue(ar->hw, arvif->vdev_id);
+ spin_unlock_bh(&ar->htt.tx_lock);
+
mutex_unlock(&ar->conf_mutex);
return 0;

@@ -5561,6 +5562,21 @@ static int ath10k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
return ret;
}

+static int ath10k_mac_op_set_frag_threshold(struct ieee80211_hw *hw, u32 value)
+{
+ /* Even though there's a WMI enum for fragmentation threshold no known
+ * firmware actually implements it. Moreover it is not possible to rely
+ * frame fragmentation to mac80211 because firmware clears the "more
+ * fragments" bit in frame control making it impossible for remote
+ * devices to reassemble frames.
+ *
+ * Hence implement a dummy callback just to say fragmentation isn't
+ * supported. This effectively prevents mac80211 from doing frame
+ * fragmentation in software.
+ */
+ return -EOPNOTSUPP;
+}
+
static void ath10k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
u32 queues, bool drop)
{
@@ -6395,6 +6411,7 @@ static const struct ieee80211_ops ath10k_ops = {
.remain_on_channel = ath10k_remain_on_channel,
.cancel_remain_on_channel = ath10k_cancel_remain_on_channel,
.set_rts_threshold = ath10k_set_rts_threshold,
+ .set_frag_threshold = ath10k_mac_op_set_frag_threshold,
.flush = ath10k_flush,
.tx_last_beacon = ath10k_tx_last_beacon,
.set_antenna = ath10k_set_antenna,
diff --git a/drivers/net/wireless/ath/ath10k/mac.h b/drivers/net/wireless/ath/ath10k/mac.h
index b291f063705c..e3cefe4c7cfd 100644
--- a/drivers/net/wireless/ath/ath10k/mac.h
+++ b/drivers/net/wireless/ath/ath10k/mac.h
@@ -61,9 +61,9 @@ int ath10k_mac_vif_chan(struct ieee80211_vif *vif,

void ath10k_mac_handle_beacon(struct ath10k *ar, struct sk_buff *skb);
void ath10k_mac_handle_beacon_miss(struct ath10k *ar, u32 vdev_id);
-void ath10k_mac_handle_tx_pause(struct ath10k *ar, u32 vdev_id,
- enum wmi_tlv_tx_pause_id pause_id,
- enum wmi_tlv_tx_pause_action action);
+void ath10k_mac_handle_tx_pause_vdev(struct ath10k *ar, u32 vdev_id,
+ enum wmi_tlv_tx_pause_id pause_id,
+ enum wmi_tlv_tx_pause_action action);

u8 ath10k_mac_hw_rate_to_idx(const struct ieee80211_supported_band *sband,
u8 hw_rate);
diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c
index ea656e011a96..8c5cc1facc45 100644
--- a/drivers/net/wireless/ath/ath10k/pci.c
+++ b/drivers/net/wireless/ath/ath10k/pci.c
@@ -1546,8 +1546,10 @@ static int ath10k_pci_hif_exchange_bmi_msg(struct ath10k *ar,

req_paddr = dma_map_single(ar->dev, treq, req_len, DMA_TO_DEVICE);
ret = dma_mapping_error(ar->dev, req_paddr);
- if (ret)
+ if (ret) {
+ ret = -EIO;
goto err_dma;
+ }

if (resp && resp_len) {
tresp = kzalloc(*resp_len, GFP_KERNEL);
@@ -1559,8 +1561,10 @@ static int ath10k_pci_hif_exchange_bmi_msg(struct ath10k *ar,
resp_paddr = dma_map_single(ar->dev, tresp, *resp_len,
DMA_FROM_DEVICE);
ret = dma_mapping_error(ar->dev, resp_paddr);
- if (ret)
+ if (ret) {
+ ret = EIO;
goto err_req;
+ }

xfer.wait_for_resp = true;
xfer.resp_len = 0;
diff --git a/drivers/net/wireless/ath/ath10k/wmi-tlv.c b/drivers/net/wireless/ath/ath10k/wmi-tlv.c
index 8fdba3865c96..6f477e83099d 100644
--- a/drivers/net/wireless/ath/ath10k/wmi-tlv.c
+++ b/drivers/net/wireless/ath/ath10k/wmi-tlv.c
@@ -377,12 +377,34 @@ static int ath10k_wmi_tlv_event_tx_pause(struct ath10k *ar,
"wmi tlv tx pause pause_id %u action %u vdev_map 0x%08x peer_id %u tid_map 0x%08x\n",
pause_id, action, vdev_map, peer_id, tid_map);

- for (vdev_id = 0; vdev_map; vdev_id++) {
- if (!(vdev_map & BIT(vdev_id)))
- continue;
-
- vdev_map &= ~BIT(vdev_id);
- ath10k_mac_handle_tx_pause(ar, vdev_id, pause_id, action);
+ switch (pause_id) {
+ case WMI_TLV_TX_PAUSE_ID_MCC:
+ case WMI_TLV_TX_PAUSE_ID_P2P_CLI_NOA:
+ case WMI_TLV_TX_PAUSE_ID_P2P_GO_PS:
+ case WMI_TLV_TX_PAUSE_ID_AP_PS:
+ case WMI_TLV_TX_PAUSE_ID_IBSS_PS:
+ for (vdev_id = 0; vdev_map; vdev_id++) {
+ if (!(vdev_map & BIT(vdev_id)))
+ continue;
+
+ vdev_map &= ~BIT(vdev_id);
+ ath10k_mac_handle_tx_pause_vdev(ar, vdev_id, pause_id,
+ action);
+ }
+ break;
+ case WMI_TLV_TX_PAUSE_ID_AP_PEER_PS:
+ case WMI_TLV_TX_PAUSE_ID_AP_PEER_UAPSD:
+ case WMI_TLV_TX_PAUSE_ID_STA_ADD_BA:
+ case WMI_TLV_TX_PAUSE_ID_HOST:
+ ath10k_dbg(ar, ATH10K_DBG_MAC,
+ "mac ignoring unsupported tx pause id %d\n",
+ pause_id);
+ break;
+ default:
+ ath10k_dbg(ar, ATH10K_DBG_MAC,
+ "mac ignoring unknown tx pause vdev %d\n",
+ pause_id);
+ break;
}

kfree(tb);
diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c
index 6c046c244705..8dd84c160cfd 100644
--- a/drivers/net/wireless/ath/ath10k/wmi.c
+++ b/drivers/net/wireless/ath/ath10k/wmi.c
@@ -2391,6 +2391,7 @@ void ath10k_wmi_event_host_swba(struct ath10k *ar, struct sk_buff *skb)
ath10k_warn(ar, "failed to map beacon: %d\n",
ret);
dev_kfree_skb_any(bcn);
+ ret = -EIO;
goto skip;
}

diff --git a/drivers/net/wireless/rsi/rsi_91x_sdio_ops.c b/drivers/net/wireless/rsi/rsi_91x_sdio_ops.c
index 1c6788aecc62..40d72312f3df 100644
--- a/drivers/net/wireless/rsi/rsi_91x_sdio_ops.c
+++ b/drivers/net/wireless/rsi/rsi_91x_sdio_ops.c
@@ -203,8 +203,10 @@ static int rsi_load_ta_instructions(struct rsi_common *common)

/* Copy firmware into DMA-accessible memory */
fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL);
- if (!fw)
- return -ENOMEM;
+ if (!fw) {
+ status = -ENOMEM;
+ goto out;
+ }
len = fw_entry->size;

if (len % 4)
@@ -217,6 +219,8 @@ static int rsi_load_ta_instructions(struct rsi_common *common)

status = rsi_copy_to_card(common, fw, len, num_blocks);
kfree(fw);
+
+out:
release_firmware(fw_entry);
return status;
}
diff --git a/drivers/net/wireless/rsi/rsi_91x_usb_ops.c b/drivers/net/wireless/rsi/rsi_91x_usb_ops.c
index 30c2cf7fa93b..de4900862836 100644
--- a/drivers/net/wireless/rsi/rsi_91x_usb_ops.c
+++ b/drivers/net/wireless/rsi/rsi_91x_usb_ops.c
@@ -148,8 +148,10 @@ static int rsi_load_ta_instructions(struct rsi_common *common)

/* Copy firmware into DMA-accessible memory */
fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL);
- if (!fw)
- return -ENOMEM;
+ if (!fw) {
+ status = -ENOMEM;
+ goto out;
+ }
len = fw_entry->size;

if (len % 4)
@@ -162,6 +164,8 @@ static int rsi_load_ta_instructions(struct rsi_common *common)

status = rsi_copy_to_card(common, fw, len, num_blocks);
kfree(fw);
+
+out:
release_firmware(fw_entry);
return status;
}
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index f948c46d5132..5ff0cfd142ee 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -1348,7 +1348,8 @@ static void xennet_disconnect_backend(struct netfront_info *info)
queue->tx_evtchn = queue->rx_evtchn = 0;
queue->tx_irq = queue->rx_irq = 0;

- napi_synchronize(&queue->napi);
+ if (netif_running(info->netdev))
+ napi_synchronize(&queue->napi);

xennet_release_tx_bufs(queue);
xennet_release_rx_bufs(queue);
diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index ade9eb917a4d..b796d1bd8988 100644
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -86,6 +86,8 @@ static int pmem_rw_page(struct block_device *bdev, sector_t sector,
struct pmem_device *pmem = bdev->bd_disk->private_data;

pmem_do_bvec(pmem, page, PAGE_CACHE_SIZE, 0, rw, sector);
+ if (rw & WRITE)
+ wmb_pmem();
page_endio(page, rw & WRITE, 0);

return 0;
diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index b965c12168b7..502a82ca1db0 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -442,7 +442,8 @@ static const struct pci_vpd_ops pci_vpd_pci22_ops = {
static ssize_t pci_vpd_f0_read(struct pci_dev *dev, loff_t pos, size_t count,
void *arg)
{
- struct pci_dev *tdev = pci_get_slot(dev->bus, PCI_SLOT(dev->devfn));
+ struct pci_dev *tdev = pci_get_slot(dev->bus,
+ PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
ssize_t ret;

if (!tdev)
@@ -456,7 +457,8 @@ static ssize_t pci_vpd_f0_read(struct pci_dev *dev, loff_t pos, size_t count,
static ssize_t pci_vpd_f0_write(struct pci_dev *dev, loff_t pos, size_t count,
const void *arg)
{
- struct pci_dev *tdev = pci_get_slot(dev->bus, PCI_SLOT(dev->devfn));
+ struct pci_dev *tdev = pci_get_slot(dev->bus,
+ PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
ssize_t ret;

if (!tdev)
@@ -473,22 +475,6 @@ static const struct pci_vpd_ops pci_vpd_f0_ops = {
.release = pci_vpd_pci22_release,
};

-static int pci_vpd_f0_dev_check(struct pci_dev *dev)
-{
- struct pci_dev *tdev = pci_get_slot(dev->bus, PCI_SLOT(dev->devfn));
- int ret = 0;
-
- if (!tdev)
- return -ENODEV;
- if (!tdev->vpd || !tdev->multifunction ||
- dev->class != tdev->class || dev->vendor != tdev->vendor ||
- dev->device != tdev->device)
- ret = -ENODEV;
-
- pci_dev_put(tdev);
- return ret;
-}
-
int pci_vpd_pci22_init(struct pci_dev *dev)
{
struct pci_vpd_pci22 *vpd;
@@ -497,12 +483,7 @@ int pci_vpd_pci22_init(struct pci_dev *dev)
cap = pci_find_capability(dev, PCI_CAP_ID_VPD);
if (!cap)
return -ENODEV;
- if (dev->dev_flags & PCI_DEV_FLAGS_VPD_REF_F0) {
- int ret = pci_vpd_f0_dev_check(dev);

- if (ret)
- return ret;
- }
vpd = kzalloc(sizeof(*vpd), GFP_ATOMIC);
if (!vpd)
return -ENOMEM;
diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index 6fbd3f2b5992..d3346d23963b 100644
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -256,6 +256,8 @@ bool pci_bus_clip_resource(struct pci_dev *dev, int idx)

res->start = start;
res->end = end;
+ res->flags &= ~IORESOURCE_UNSET;
+ orig_res.flags &= ~IORESOURCE_UNSET;
dev_printk(KERN_DEBUG, &dev->dev, "%pR clipped to %pR\n",
&orig_res, res);

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index dbd13854f21e..6b1c6a915daa 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -1906,11 +1906,27 @@ static void quirk_netmos(struct pci_dev *dev)
DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID,
PCI_CLASS_COMMUNICATION_SERIAL, 8, quirk_netmos);

+/*
+ * Quirk non-zero PCI functions to route VPD access through function 0 for
+ * devices that share VPD resources between functions. The functions are
+ * expected to be identical devices.
+ */
static void quirk_f0_vpd_link(struct pci_dev *dev)
{
- if (!dev->multifunction || !PCI_FUNC(dev->devfn))
+ struct pci_dev *f0;
+
+ if (!PCI_FUNC(dev->devfn))
return;
- dev->dev_flags |= PCI_DEV_FLAGS_VPD_REF_F0;
+
+ f0 = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
+ if (!f0)
+ return;
+
+ if (f0->vpd && dev->class == f0->class &&
+ dev->vendor == f0->vendor && dev->device == f0->device)
+ dev->dev_flags |= PCI_DEV_FLAGS_VPD_REF_F0;
+
+ pci_dev_put(f0);
}
DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
PCI_CLASS_NETWORK_ETHERNET, 8, quirk_f0_vpd_link);
diff --git a/drivers/pcmcia/sa1100_generic.c b/drivers/pcmcia/sa1100_generic.c
index 803945259da8..42861cc70158 100644
--- a/drivers/pcmcia/sa1100_generic.c
+++ b/drivers/pcmcia/sa1100_generic.c
@@ -93,7 +93,6 @@ static int sa11x0_drv_pcmcia_remove(struct platform_device *dev)
for (i = 0; i < sinfo->nskt; i++)
soc_pcmcia_remove_one(&sinfo->skt[i]);

- clk_put(sinfo->clk);
kfree(sinfo);
return 0;
}
diff --git a/drivers/pcmcia/sa11xx_base.c b/drivers/pcmcia/sa11xx_base.c
index cf6de2c2b329..553d70a67f80 100644
--- a/drivers/pcmcia/sa11xx_base.c
+++ b/drivers/pcmcia/sa11xx_base.c
@@ -222,7 +222,7 @@ int sa11xx_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops,
int i, ret = 0;
struct clk *clk;

- clk = clk_get(dev, NULL);
+ clk = devm_clk_get(dev, NULL);
if (IS_ERR(clk))
return PTR_ERR(clk);

@@ -251,7 +251,6 @@ int sa11xx_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops,
if (ret) {
while (--i >= 0)
soc_pcmcia_remove_one(&sinfo->skt[i]);
- clk_put(clk);
kfree(sinfo);
} else {
dev_set_drvdata(dev, sinfo);
diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
index 3ad7b1fa24ce..6f4f310de946 100644
--- a/drivers/platform/x86/toshiba_acpi.c
+++ b/drivers/platform/x86/toshiba_acpi.c
@@ -2408,11 +2408,9 @@ static int toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
if (error)
return error;

- error = toshiba_hotkey_event_type_get(dev, &events_type);
- if (error) {
- pr_err("Unable to query Hotkey Event Type\n");
- return error;
- }
+ if (toshiba_hotkey_event_type_get(dev, &events_type))
+ pr_notice("Unable to query Hotkey Event Type\n");
+
dev->hotkey_event_type = events_type;

dev->hotkey_dev = input_allocate_device();
diff --git a/drivers/power/avs/Kconfig b/drivers/power/avs/Kconfig
index 7f3d389bd601..a67eeace6a89 100644
--- a/drivers/power/avs/Kconfig
+++ b/drivers/power/avs/Kconfig
@@ -13,7 +13,7 @@ menuconfig POWER_AVS

config ROCKCHIP_IODOMAIN
tristate "Rockchip IO domain support"
- depends on ARCH_ROCKCHIP && OF
+ depends on POWER_AVS && ARCH_ROCKCHIP && OF
help
Say y here to enable support io domains on Rockchip SoCs. It is
necessary for the io domain setting of the SoC to match the
diff --git a/drivers/regulator/axp20x-regulator.c b/drivers/regulator/axp20x-regulator.c
index 646829132b59..1dea0e8353e0 100644
--- a/drivers/regulator/axp20x-regulator.c
+++ b/drivers/regulator/axp20x-regulator.c
@@ -192,9 +192,9 @@ static const struct regulator_desc axp22x_regulators[] = {
AXP_DESC(AXP22X, DCDC3, "dcdc3", "vin3", 600, 1860, 20,
AXP22X_DCDC3_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(3)),
AXP_DESC(AXP22X, DCDC4, "dcdc4", "vin4", 600, 1540, 20,
- AXP22X_DCDC4_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(3)),
+ AXP22X_DCDC4_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(4)),
AXP_DESC(AXP22X, DCDC5, "dcdc5", "vin5", 1000, 2550, 50,
- AXP22X_DCDC5_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(4)),
+ AXP22X_DCDC5_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(5)),
/* secondary switchable output of DCDC1 */
AXP_DESC_SW(AXP22X, DC1SW, "dc1sw", "dcdc1", 1600, 3400, 100,
AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(7)),
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 78387a6cbae5..5081533858f1 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1376,15 +1376,19 @@ static int regulator_resolve_supply(struct regulator_dev *rdev)
return 0;

r = regulator_dev_lookup(dev, rdev->supply_name, &ret);
- if (ret == -ENODEV) {
- /*
- * No supply was specified for this regulator and
- * there will never be one.
- */
- return 0;
- }
-
if (!r) {
+ if (ret == -ENODEV) {
+ /*
+ * No supply was specified for this regulator and
+ * there will never be one.
+ */
+ return 0;
+ }
+
+ /* Did the lookup explicitly defer for us? */
+ if (ret == -EPROBE_DEFER)
+ return ret;
+
if (have_full_constraints()) {
r = dummy_regulator_rdev;
} else {
diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c
index add419d6ff34..a56a7b243e91 100644
--- a/drivers/scsi/3w-9xxx.c
+++ b/drivers/scsi/3w-9xxx.c
@@ -212,6 +212,17 @@ static const struct file_operations twa_fops = {
.llseek = noop_llseek,
};

+/*
+ * The controllers use an inline buffer instead of a mapped SGL for small,
+ * single entry buffers. Note that we treat a zero-length transfer like
+ * a mapped SGL.
+ */
+static bool twa_command_mapped(struct scsi_cmnd *cmd)
+{
+ return scsi_sg_count(cmd) != 1 ||
+ scsi_bufflen(cmd) >= TW_MIN_SGL_LENGTH;
+}
+
/* This function will complete an aen request from the isr */
static int twa_aen_complete(TW_Device_Extension *tw_dev, int request_id)
{
@@ -1339,7 +1350,8 @@ static irqreturn_t twa_interrupt(int irq, void *dev_instance)
}

/* Now complete the io */
- scsi_dma_unmap(cmd);
+ if (twa_command_mapped(cmd))
+ scsi_dma_unmap(cmd);
cmd->scsi_done(cmd);
tw_dev->state[request_id] = TW_S_COMPLETED;
twa_free_request_id(tw_dev, request_id);
@@ -1582,7 +1594,8 @@ static int twa_reset_device_extension(TW_Device_Extension *tw_dev)
struct scsi_cmnd *cmd = tw_dev->srb[i];

cmd->result = (DID_RESET << 16);
- scsi_dma_unmap(cmd);
+ if (twa_command_mapped(cmd))
+ scsi_dma_unmap(cmd);
cmd->scsi_done(cmd);
}
}
@@ -1765,12 +1778,14 @@ static int twa_scsi_queue_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_
retval = twa_scsiop_execute_scsi(tw_dev, request_id, NULL, 0, NULL);
switch (retval) {
case SCSI_MLQUEUE_HOST_BUSY:
- scsi_dma_unmap(SCpnt);
+ if (twa_command_mapped(SCpnt))
+ scsi_dma_unmap(SCpnt);
twa_free_request_id(tw_dev, request_id);
break;
case 1:
SCpnt->result = (DID_ERROR << 16);
- scsi_dma_unmap(SCpnt);
+ if (twa_command_mapped(SCpnt))
+ scsi_dma_unmap(SCpnt);
done(SCpnt);
tw_dev->state[request_id] = TW_S_COMPLETED;
twa_free_request_id(tw_dev, request_id);
@@ -1831,8 +1846,7 @@ static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id,
/* Map sglist from scsi layer to cmd packet */

if (scsi_sg_count(srb)) {
- if ((scsi_sg_count(srb) == 1) &&
- (scsi_bufflen(srb) < TW_MIN_SGL_LENGTH)) {
+ if (!twa_command_mapped(srb)) {
if (srb->sc_data_direction == DMA_TO_DEVICE ||
srb->sc_data_direction == DMA_BIDIRECTIONAL)
scsi_sg_copy_to_buffer(srb,
@@ -1905,7 +1919,7 @@ static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int re
{
struct scsi_cmnd *cmd = tw_dev->srb[request_id];

- if (scsi_bufflen(cmd) < TW_MIN_SGL_LENGTH &&
+ if (!twa_command_mapped(cmd) &&
(cmd->sc_data_direction == DMA_FROM_DEVICE ||
cmd->sc_data_direction == DMA_BIDIRECTIONAL)) {
if (scsi_sg_count(cmd) == 1) {
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 1dafeb43333b..cab4e98b2b0e 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -5104,7 +5104,7 @@ static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
int rc;
struct ctlr_info *h;
struct hpsa_scsi_dev_t *dev;
- char msg[40];
+ char msg[48];

/* find the controller to which the command to be aborted was sent */
h = sdev_to_hba(scsicmd->device);
@@ -5122,16 +5122,18 @@ static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)

/* if controller locked up, we can guarantee command won't complete */
if (lockup_detected(h)) {
- sprintf(msg, "cmd %d RESET FAILED, lockup detected",
- hpsa_get_cmd_index(scsicmd));
+ snprintf(msg, sizeof(msg),
+ "cmd %d RESET FAILED, lockup detected",
+ hpsa_get_cmd_index(scsicmd));
hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
return FAILED;
}

/* this reset request might be the result of a lockup; check */
if (detect_controller_lockup(h)) {
- sprintf(msg, "cmd %d RESET FAILED, new lockup detected",
- hpsa_get_cmd_index(scsicmd));
+ snprintf(msg, sizeof(msg),
+ "cmd %d RESET FAILED, new lockup detected",
+ hpsa_get_cmd_index(scsicmd));
hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
return FAILED;
}
@@ -5145,7 +5147,8 @@ static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
/* send a reset to the SCSI LUN which the command was sent to */
rc = hpsa_do_reset(h, dev, dev->scsi3addr, HPSA_RESET_TYPE_LUN,
DEFAULT_REPLY_QUEUE);
- sprintf(msg, "reset %s", rc == 0 ? "completed successfully" : "failed");
+ snprintf(msg, sizeof(msg), "reset %s",
+ rc == 0 ? "completed successfully" : "failed");
hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
return rc == 0 ? SUCCESS : FAILED;
}
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index a9aa38903efe..cccab6188328 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -4554,7 +4554,7 @@ static ssize_t ipr_store_raw_mode(struct device *dev,
spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
res = (struct ipr_resource_entry *)sdev->hostdata;
if (res) {
- if (ioa_cfg->sis64 && ipr_is_af_dasd_device(res)) {
+ if (ipr_is_af_dasd_device(res)) {
res->raw_mode = simple_strtoul(buf, NULL, 10);
len = strlen(buf);
if (res->sdev)
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 6457a8a0db9c..bf3d801ac5f9 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -2169,8 +2169,17 @@ int scsi_error_handler(void *data)
* We never actually get interrupted because kthread_run
* disables signal delivery for the created thread.
*/
- while (!kthread_should_stop()) {
+ while (true) {
+ /*
+ * The sequence in kthread_stop() sets the stop flag first
+ * then wakes the process. To avoid missed wakeups, the task
+ * should always be in a non running state before the stop
+ * flag is checked
+ */
set_current_state(TASK_INTERRUPTIBLE);
+ if (kthread_should_stop())
+ break;
+
if ((shost->host_failed == 0 && shost->host_eh_scheduled == 0) ||
shost->host_failed != atomic_read(&shost->host_busy)) {
SCSI_LOG_ERROR_RECOVERY(1,
diff --git a/drivers/spi/spi-bcm2835.c b/drivers/spi/spi-bcm2835.c
index c9357bb393d3..744596464d33 100644
--- a/drivers/spi/spi-bcm2835.c
+++ b/drivers/spi/spi-bcm2835.c
@@ -386,14 +386,14 @@ static bool bcm2835_spi_can_dma(struct spi_master *master,
/* otherwise we only allow transfers within the same page
* to avoid wasting time on dma_mapping when it is not practical
*/
- if (((size_t)tfr->tx_buf & PAGE_MASK) + tfr->len > PAGE_SIZE) {
+ if (((size_t)tfr->tx_buf & (PAGE_SIZE - 1)) + tfr->len > PAGE_SIZE) {
dev_warn_once(&spi->dev,
"Unaligned spi tx-transfer bridging page\n");
return false;
}
- if (((size_t)tfr->rx_buf & PAGE_MASK) + tfr->len > PAGE_SIZE) {
+ if (((size_t)tfr->rx_buf & (PAGE_SIZE - 1)) + tfr->len > PAGE_SIZE) {
dev_warn_once(&spi->dev,
- "Unaligned spi tx-transfer bridging page\n");
+ "Unaligned spi rx-transfer bridging page\n");
return false;
}

diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index 7293d6d875c5..8e4b1a7c37ce 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -643,6 +643,10 @@ static irqreturn_t ssp_int(int irq, void *dev_id)
if (!(sccr1_reg & SSCR1_TIE))
mask &= ~SSSR_TFS;

+ /* Ignore RX timeout interrupt if it is disabled */
+ if (!(sccr1_reg & SSCR1_TINTE))
+ mask &= ~SSSR_TINT;
+
if (!(status & mask))
return IRQ_NONE;

diff --git a/drivers/spi/spi-xtensa-xtfpga.c b/drivers/spi/spi-xtensa-xtfpga.c
index 2e32ea2f194f..be6155cba9de 100644
--- a/drivers/spi/spi-xtensa-xtfpga.c
+++ b/drivers/spi/spi-xtensa-xtfpga.c
@@ -34,13 +34,13 @@ struct xtfpga_spi {
static inline void xtfpga_spi_write32(const struct xtfpga_spi *spi,
unsigned addr, u32 val)
{
- iowrite32(val, spi->regs + addr);
+ __raw_writel(val, spi->regs + addr);
}

static inline unsigned int xtfpga_spi_read32(const struct xtfpga_spi *spi,
unsigned addr)
{
- return ioread32(spi->regs + addr);
+ return __raw_readl(spi->regs + addr);
}

static inline void xtfpga_spi_wait_busy(struct xtfpga_spi *xspi)
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index cf8b91b23a76..9ce2f156d382 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -1437,8 +1437,7 @@ static struct class spi_master_class = {
*
* The caller is responsible for assigning the bus number and initializing
* the master's methods before calling spi_register_master(); and (after errors
- * adding the device) calling spi_master_put() and kfree() to prevent a memory
- * leak.
+ * adding the device) calling spi_master_put() to prevent a memory leak.
*/
struct spi_master *spi_alloc_master(struct device *dev, unsigned size)
{
diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index c7de64171c45..97aad8f91c2f 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -651,7 +651,8 @@ static int spidev_release(struct inode *inode, struct file *filp)
kfree(spidev->rx_buffer);
spidev->rx_buffer = NULL;

- spidev->speed_hz = spidev->spi->max_speed_hz;
+ if (spidev->spi)
+ spidev->speed_hz = spidev->spi->max_speed_hz;

/* ... after we unbound from the underlying device? */
spin_lock_irq(&spidev->spi_lock);
diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
index 6f4811263557..b71b1f2d98d5 100644
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -1179,13 +1179,13 @@ struct ion_handle *ion_import_dma_buf(struct ion_client *client, int fd)
mutex_unlock(&client->lock);
goto end;
}
- mutex_unlock(&client->lock);

handle = ion_handle_create(client, buffer);
- if (IS_ERR(handle))
+ if (IS_ERR(handle)) {
+ mutex_unlock(&client->lock);
goto end;
+ }

- mutex_lock(&client->lock);
ret = ion_handle_add(client, handle);
mutex_unlock(&client->lock);
if (ret) {
diff --git a/drivers/staging/speakup/fakekey.c b/drivers/staging/speakup/fakekey.c
index 4299cf45f947..5e1f16c36b49 100644
--- a/drivers/staging/speakup/fakekey.c
+++ b/drivers/staging/speakup/fakekey.c
@@ -81,6 +81,7 @@ void speakup_fake_down_arrow(void)
__this_cpu_write(reporting_keystroke, true);
input_report_key(virt_keyboard, KEY_DOWN, PRESSED);
input_report_key(virt_keyboard, KEY_DOWN, RELEASED);
+ input_sync(virt_keyboard);
__this_cpu_write(reporting_keystroke, false);

/* reenable preemption */
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index fd092909a457..56cf1996f30f 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -341,7 +341,6 @@ static struct iscsi_np *iscsit_get_np(

struct iscsi_np *iscsit_add_np(
struct __kernel_sockaddr_storage *sockaddr,
- char *ip_str,
int network_transport)
{
struct sockaddr_in *sock_in;
@@ -370,11 +369,9 @@ struct iscsi_np *iscsit_add_np(
np->np_flags |= NPF_IP_NETWORK;
if (sockaddr->ss_family == AF_INET6) {
sock_in6 = (struct sockaddr_in6 *)sockaddr;
- snprintf(np->np_ip, IPV6_ADDRESS_SPACE, "%s", ip_str);
np->np_port = ntohs(sock_in6->sin6_port);
} else {
sock_in = (struct sockaddr_in *)sockaddr;
- sprintf(np->np_ip, "%s", ip_str);
np->np_port = ntohs(sock_in->sin_port);
}

@@ -411,8 +408,8 @@ struct iscsi_np *iscsit_add_np(
list_add_tail(&np->np_list, &g_np_list);
mutex_unlock(&np_lock);

- pr_debug("CORE[0] - Added Network Portal: %s:%hu on %s\n",
- np->np_ip, np->np_port, np->np_transport->name);
+ pr_debug("CORE[0] - Added Network Portal: %pISc:%hu on %s\n",
+ &np->np_sockaddr, np->np_port, np->np_transport->name);

return np;
}
@@ -481,8 +478,8 @@ int iscsit_del_np(struct iscsi_np *np)
list_del(&np->np_list);
mutex_unlock(&np_lock);

- pr_debug("CORE[0] - Removed Network Portal: %s:%hu on %s\n",
- np->np_ip, np->np_port, np->np_transport->name);
+ pr_debug("CORE[0] - Removed Network Portal: %pISc:%hu on %s\n",
+ &np->np_sockaddr, np->np_port, np->np_transport->name);

iscsit_put_transport(np->np_transport);
kfree(np);
@@ -3464,7 +3461,6 @@ iscsit_build_sendtargets_response(struct iscsi_cmd *cmd,
tpg_np_list) {
struct iscsi_np *np = tpg_np->tpg_np;
bool inaddr_any = iscsit_check_inaddr_any(np);
- char *fmt_str;

if (np->np_network_transport != network_transport)
continue;
@@ -3492,15 +3488,18 @@ iscsit_build_sendtargets_response(struct iscsi_cmd *cmd,
}
}

- if (np->np_sockaddr.ss_family == AF_INET6)
- fmt_str = "TargetAddress=[%s]:%hu,%hu";
- else
- fmt_str = "TargetAddress=%s:%hu,%hu";
-
- len = sprintf(buf, fmt_str,
- inaddr_any ? conn->local_ip : np->np_ip,
- np->np_port,
- tpg->tpgt);
+ if (inaddr_any) {
+ len = sprintf(buf, "TargetAddress="
+ "%s:%hu,%hu",
+ conn->local_ip,
+ np->np_port,
+ tpg->tpgt);
+ } else {
+ len = sprintf(buf, "TargetAddress="
+ "%pISpc,%hu",
+ &np->np_sockaddr,
+ tpg->tpgt);
+ }
len += 1;

if ((len + payload_len) > buffer_len) {
diff --git a/drivers/target/iscsi/iscsi_target.h b/drivers/target/iscsi/iscsi_target.h
index 7d0f9c00d9c2..d294f030a097 100644
--- a/drivers/target/iscsi/iscsi_target.h
+++ b/drivers/target/iscsi/iscsi_target.h
@@ -13,7 +13,7 @@ extern int iscsit_deaccess_np(struct iscsi_np *, struct iscsi_portal_group *,
extern bool iscsit_check_np_match(struct __kernel_sockaddr_storage *,
struct iscsi_np *, int);
extern struct iscsi_np *iscsit_add_np(struct __kernel_sockaddr_storage *,
- char *, int);
+ int);
extern int iscsit_reset_np_thread(struct iscsi_np *, struct iscsi_tpg_np *,
struct iscsi_portal_group *, bool);
extern int iscsit_del_np(struct iscsi_np *);
diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
index c1898c84b3d2..db3b9b986954 100644
--- a/drivers/target/iscsi/iscsi_target_configfs.c
+++ b/drivers/target/iscsi/iscsi_target_configfs.c
@@ -99,7 +99,7 @@ static ssize_t lio_target_np_store_sctp(
* Use existing np->np_sockaddr for SCTP network portal reference
*/
tpg_np_sctp = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
- np->np_ip, tpg_np, ISCSI_SCTP_TCP);
+ tpg_np, ISCSI_SCTP_TCP);
if (!tpg_np_sctp || IS_ERR(tpg_np_sctp))
goto out;
} else {
@@ -177,7 +177,7 @@ static ssize_t lio_target_np_store_iser(
}

tpg_np_iser = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
- np->np_ip, tpg_np, ISCSI_INFINIBAND);
+ tpg_np, ISCSI_INFINIBAND);
if (IS_ERR(tpg_np_iser)) {
rc = PTR_ERR(tpg_np_iser);
goto out;
@@ -248,8 +248,8 @@ static struct se_tpg_np *lio_target_call_addnptotpg(
return ERR_PTR(-EINVAL);
}
str++; /* Skip over leading "[" */
- *str2 = '\0'; /* Terminate the IPv6 address */
- str2++; /* Skip over the "]" */
+ *str2 = '\0'; /* Terminate the unbracketed IPv6 address */
+ str2++; /* Skip over the \0 */
port_str = strstr(str2, ":");
if (!port_str) {
pr_err("Unable to locate \":port\""
@@ -316,7 +316,7 @@ static struct se_tpg_np *lio_target_call_addnptotpg(
* sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
*
*/
- tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, str, NULL,
+ tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, NULL,
ISCSI_TCP);
if (IS_ERR(tpg_np)) {
iscsit_put_tpg(tpg);
@@ -344,8 +344,8 @@ static void lio_target_call_delnpfromtpg(

se_tpg = &tpg->tpg_se_tpg;
pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"
- " PORTAL: %s:%hu\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
- tpg->tpgt, tpg_np->tpg_np->np_ip, tpg_np->tpg_np->np_port);
+ " PORTAL: %pISc:%hu\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
+ tpg->tpgt, &tpg_np->tpg_np->np_sockaddr, tpg_np->tpg_np->np_port);

ret = iscsit_tpg_del_network_portal(tpg, tpg_np);
if (ret < 0)
diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
index 7e8f65e5448f..666c0739bfbe 100644
--- a/drivers/target/iscsi/iscsi_target_login.c
+++ b/drivers/target/iscsi/iscsi_target_login.c
@@ -823,8 +823,8 @@ static void iscsi_handle_login_thread_timeout(unsigned long data)
struct iscsi_np *np = (struct iscsi_np *) data;

spin_lock_bh(&np->np_thread_lock);
- pr_err("iSCSI Login timeout on Network Portal %s:%hu\n",
- np->np_ip, np->np_port);
+ pr_err("iSCSI Login timeout on Network Portal %pISc:%hu\n",
+ &np->np_sockaddr, np->np_port);

if (np->np_login_timer_flags & ISCSI_TF_STOP) {
spin_unlock_bh(&np->np_thread_lock);
@@ -1302,8 +1302,8 @@ static int __iscsi_target_login_thread(struct iscsi_np *np)
spin_lock_bh(&np->np_thread_lock);
if (np->np_thread_state != ISCSI_NP_THREAD_ACTIVE) {
spin_unlock_bh(&np->np_thread_lock);
- pr_err("iSCSI Network Portal on %s:%hu currently not"
- " active.\n", np->np_ip, np->np_port);
+ pr_err("iSCSI Network Portal on %pISc:%hu currently not"
+ " active.\n", &np->np_sockaddr, np->np_port);
iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
ISCSI_LOGIN_STATUS_SVC_UNAVAILABLE);
goto new_sess_out;
diff --git a/drivers/target/iscsi/iscsi_target_parameters.c b/drivers/target/iscsi/iscsi_target_parameters.c
index e8a52f7d6204..51d1734d5390 100644
--- a/drivers/target/iscsi/iscsi_target_parameters.c
+++ b/drivers/target/iscsi/iscsi_target_parameters.c
@@ -407,6 +407,7 @@ int iscsi_create_default_params(struct iscsi_param_list **param_list_ptr)
TYPERANGE_UTF8, USE_INITIAL_ONLY);
if (!param)
goto out;
+
/*
* Extra parameters for ISER from RFC-5046
*/
@@ -496,9 +497,9 @@ int iscsi_set_keys_to_negotiate(
} else if (!strcmp(param->name, SESSIONTYPE)) {
SET_PSTATE_NEGOTIATE(param);
} else if (!strcmp(param->name, IFMARKER)) {
- SET_PSTATE_NEGOTIATE(param);
+ SET_PSTATE_REJECT(param);
} else if (!strcmp(param->name, OFMARKER)) {
- SET_PSTATE_NEGOTIATE(param);
+ SET_PSTATE_REJECT(param);
} else if (!strcmp(param->name, IFMARKINT)) {
SET_PSTATE_REJECT(param);
} else if (!strcmp(param->name, OFMARKINT)) {
diff --git a/drivers/target/iscsi/iscsi_target_tpg.c b/drivers/target/iscsi/iscsi_target_tpg.c
index 968068ffcb1c..de26bee4bddd 100644
--- a/drivers/target/iscsi/iscsi_target_tpg.c
+++ b/drivers/target/iscsi/iscsi_target_tpg.c
@@ -460,7 +460,6 @@ static bool iscsit_tpg_check_network_portal(
struct iscsi_tpg_np *iscsit_tpg_add_network_portal(
struct iscsi_portal_group *tpg,
struct __kernel_sockaddr_storage *sockaddr,
- char *ip_str,
struct iscsi_tpg_np *tpg_np_parent,
int network_transport)
{
@@ -470,8 +469,8 @@ struct iscsi_tpg_np *iscsit_tpg_add_network_portal(
if (!tpg_np_parent) {
if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr,
network_transport)) {
- pr_err("Network Portal: %s already exists on a"
- " different TPG on %s\n", ip_str,
+ pr_err("Network Portal: %pISc already exists on a"
+ " different TPG on %s\n", sockaddr,
tpg->tpg_tiqn->tiqn);
return ERR_PTR(-EEXIST);
}
@@ -484,7 +483,7 @@ struct iscsi_tpg_np *iscsit_tpg_add_network_portal(
return ERR_PTR(-ENOMEM);
}

- np = iscsit_add_np(sockaddr, ip_str, network_transport);
+ np = iscsit_add_np(sockaddr, network_transport);
if (IS_ERR(np)) {
kfree(tpg_np);
return ERR_CAST(np);
@@ -514,8 +513,8 @@ struct iscsi_tpg_np *iscsit_tpg_add_network_portal(
spin_unlock(&tpg_np_parent->tpg_np_parent_lock);
}

- pr_debug("CORE[%s] - Added Network Portal: %s:%hu,%hu on %s\n",
- tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt,
+ pr_debug("CORE[%s] - Added Network Portal: %pISc:%hu,%hu on %s\n",
+ tpg->tpg_tiqn->tiqn, &np->np_sockaddr, np->np_port, tpg->tpgt,
np->np_transport->name);

return tpg_np;
@@ -528,8 +527,8 @@ static int iscsit_tpg_release_np(
{
iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true);

- pr_debug("CORE[%s] - Removed Network Portal: %s:%hu,%hu on %s\n",
- tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt,
+ pr_debug("CORE[%s] - Removed Network Portal: %pISc:%hu,%hu on %s\n",
+ tpg->tpg_tiqn->tiqn, &np->np_sockaddr, np->np_port, tpg->tpgt,
np->np_transport->name);

tpg_np->tpg_np = NULL;
diff --git a/drivers/target/iscsi/iscsi_target_tpg.h b/drivers/target/iscsi/iscsi_target_tpg.h
index 95ff5bdecd71..28abda89ea98 100644
--- a/drivers/target/iscsi/iscsi_target_tpg.h
+++ b/drivers/target/iscsi/iscsi_target_tpg.h
@@ -22,7 +22,7 @@ extern struct iscsi_node_attrib *iscsit_tpg_get_node_attrib(struct iscsi_session
extern void iscsit_tpg_del_external_nps(struct iscsi_tpg_np *);
extern struct iscsi_tpg_np *iscsit_tpg_locate_child_np(struct iscsi_tpg_np *, int);
extern struct iscsi_tpg_np *iscsit_tpg_add_network_portal(struct iscsi_portal_group *,
- struct __kernel_sockaddr_storage *, char *, struct iscsi_tpg_np *,
+ struct __kernel_sockaddr_storage *, struct iscsi_tpg_np *,
int);
extern int iscsit_tpg_del_network_portal(struct iscsi_portal_group *,
struct iscsi_tpg_np *);
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index 09e682b1c549..8f1cd194f06a 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -427,8 +427,6 @@ void core_disable_device_list_for_node(

hlist_del_rcu(&orig->link);
clear_bit(DEF_PR_REG_ACTIVE, &orig->deve_flags);
- rcu_assign_pointer(orig->se_lun, NULL);
- rcu_assign_pointer(orig->se_lun_acl, NULL);
orig->lun_flags = 0;
orig->creation_time = 0;
orig->attach_count--;
@@ -439,6 +437,9 @@ void core_disable_device_list_for_node(
kref_put(&orig->pr_kref, target_pr_kref_release);
wait_for_completion(&orig->pr_comp);

+ rcu_assign_pointer(orig->se_lun, NULL);
+ rcu_assign_pointer(orig->se_lun_acl, NULL);
+
kfree_rcu(orig, rcu_head);

core_scsi3_free_pr_reg_from_nacl(dev, nacl);
diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c
index 5ab7100de17e..e7933115087a 100644
--- a/drivers/target/target_core_pr.c
+++ b/drivers/target/target_core_pr.c
@@ -618,7 +618,7 @@ static struct t10_pr_registration *__core_scsi3_do_alloc_registration(
struct se_device *dev,
struct se_node_acl *nacl,
struct se_lun *lun,
- struct se_dev_entry *deve,
+ struct se_dev_entry *dest_deve,
u64 mapped_lun,
unsigned char *isid,
u64 sa_res_key,
@@ -640,7 +640,29 @@ static struct t10_pr_registration *__core_scsi3_do_alloc_registration(
INIT_LIST_HEAD(&pr_reg->pr_reg_atp_mem_list);
atomic_set(&pr_reg->pr_res_holders, 0);
pr_reg->pr_reg_nacl = nacl;
- pr_reg->pr_reg_deve = deve;
+ /*
+ * For destination registrations for ALL_TG_PT=1 and SPEC_I_PT=1,
+ * the se_dev_entry->pr_ref will have been already obtained by
+ * core_get_se_deve_from_rtpi() or __core_scsi3_alloc_registration().
+ *
+ * Otherwise, locate se_dev_entry now and obtain a reference until
+ * registration completes in __core_scsi3_add_registration().
+ */
+ if (dest_deve) {
+ pr_reg->pr_reg_deve = dest_deve;
+ } else {
+ rcu_read_lock();
+ pr_reg->pr_reg_deve = target_nacl_find_deve(nacl, mapped_lun);
+ if (!pr_reg->pr_reg_deve) {
+ rcu_read_unlock();
+ pr_err("Unable to locate PR deve %s mapped_lun: %llu\n",
+ nacl->initiatorname, mapped_lun);
+ kmem_cache_free(t10_pr_reg_cache, pr_reg);
+ return NULL;
+ }
+ kref_get(&pr_reg->pr_reg_deve->pr_kref);
+ rcu_read_unlock();
+ }
pr_reg->pr_res_mapped_lun = mapped_lun;
pr_reg->pr_aptpl_target_lun = lun->unpacked_lun;
pr_reg->tg_pt_sep_rtpi = lun->lun_rtpi;
@@ -936,17 +958,29 @@ static int __core_scsi3_check_aptpl_registration(
!(strcmp(pr_reg->pr_tport, t_port)) &&
(pr_reg->pr_reg_tpgt == tpgt) &&
(pr_reg->pr_aptpl_target_lun == target_lun)) {
+ /*
+ * Obtain the ->pr_reg_deve pointer + reference, that
+ * is released by __core_scsi3_add_registration() below.
+ */
+ rcu_read_lock();
+ pr_reg->pr_reg_deve = target_nacl_find_deve(nacl, mapped_lun);
+ if (!pr_reg->pr_reg_deve) {
+ pr_err("Unable to locate PR APTPL %s mapped_lun:"
+ " %llu\n", nacl->initiatorname, mapped_lun);
+ rcu_read_unlock();
+ continue;
+ }
+ kref_get(&pr_reg->pr_reg_deve->pr_kref);
+ rcu_read_unlock();

pr_reg->pr_reg_nacl = nacl;
pr_reg->tg_pt_sep_rtpi = lun->lun_rtpi;
-
list_del(&pr_reg->pr_reg_aptpl_list);
spin_unlock(&pr_tmpl->aptpl_reg_lock);
/*
* At this point all of the pointers in *pr_reg will
* be setup, so go ahead and add the registration.
*/
-
__core_scsi3_add_registration(dev, nacl, pr_reg, 0, 0);
/*
* If this registration is the reservation holder,
@@ -1044,18 +1078,11 @@ static void __core_scsi3_add_registration(

__core_scsi3_dump_registration(tfo, dev, nacl, pr_reg, register_type);
spin_unlock(&pr_tmpl->registration_lock);
-
- rcu_read_lock();
- deve = pr_reg->pr_reg_deve;
- if (deve)
- set_bit(DEF_PR_REG_ACTIVE, &deve->deve_flags);
- rcu_read_unlock();
-
/*
* Skip extra processing for ALL_TG_PT=0 or REGISTER_AND_MOVE.
*/
if (!pr_reg->pr_reg_all_tg_pt || register_move)
- return;
+ goto out;
/*
* Walk pr_reg->pr_reg_atp_list and add registrations for ALL_TG_PT=1
* allocated in __core_scsi3_alloc_registration()
@@ -1075,19 +1102,31 @@ static void __core_scsi3_add_registration(
__core_scsi3_dump_registration(tfo, dev, nacl_tmp, pr_reg_tmp,
register_type);
spin_unlock(&pr_tmpl->registration_lock);
-
+ /*
+ * Drop configfs group dependency reference and deve->pr_kref
+ * obtained from __core_scsi3_alloc_registration() code.
+ */
rcu_read_lock();
deve = pr_reg_tmp->pr_reg_deve;
- if (deve)
+ if (deve) {
set_bit(DEF_PR_REG_ACTIVE, &deve->deve_flags);
+ core_scsi3_lunacl_undepend_item(deve);
+ pr_reg_tmp->pr_reg_deve = NULL;
+ }
rcu_read_unlock();
-
- /*
- * Drop configfs group dependency reference from
- * __core_scsi3_alloc_registration()
- */
- core_scsi3_lunacl_undepend_item(pr_reg_tmp->pr_reg_deve);
}
+out:
+ /*
+ * Drop deve->pr_kref obtained in __core_scsi3_do_alloc_registration()
+ */
+ rcu_read_lock();
+ deve = pr_reg->pr_reg_deve;
+ if (deve) {
+ set_bit(DEF_PR_REG_ACTIVE, &deve->deve_flags);
+ kref_put(&deve->pr_kref, target_pr_kref_release);
+ pr_reg->pr_reg_deve = NULL;
+ }
+ rcu_read_unlock();
}

static int core_scsi3_alloc_registration(
@@ -1785,9 +1824,11 @@ core_scsi3_decode_spec_i_port(
dest_node_acl->initiatorname, i_buf, (dest_se_deve) ?
dest_se_deve->mapped_lun : 0);

- if (!dest_se_deve)
+ if (!dest_se_deve) {
+ kref_put(&local_pr_reg->pr_reg_deve->pr_kref,
+ target_pr_kref_release);
continue;
-
+ }
core_scsi3_lunacl_undepend_item(dest_se_deve);
core_scsi3_nodeacl_undepend_item(dest_node_acl);
core_scsi3_tpg_undepend_item(dest_tpg);
@@ -1823,9 +1864,11 @@ out:

kmem_cache_free(t10_pr_reg_cache, dest_pr_reg);

- if (!dest_se_deve)
+ if (!dest_se_deve) {
+ kref_put(&local_pr_reg->pr_reg_deve->pr_kref,
+ target_pr_kref_release);
continue;
-
+ }
core_scsi3_lunacl_undepend_item(dest_se_deve);
core_scsi3_nodeacl_undepend_item(dest_node_acl);
core_scsi3_tpg_undepend_item(dest_tpg);
diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c
index 4515f52546f8..47fe94ee10b8 100644
--- a/drivers/target/target_core_xcopy.c
+++ b/drivers/target/target_core_xcopy.c
@@ -450,6 +450,8 @@ int target_xcopy_setup_pt(void)
memset(&xcopy_pt_sess, 0, sizeof(struct se_session));
INIT_LIST_HEAD(&xcopy_pt_sess.sess_list);
INIT_LIST_HEAD(&xcopy_pt_sess.sess_acl_list);
+ INIT_LIST_HEAD(&xcopy_pt_sess.sess_cmd_list);
+ spin_lock_init(&xcopy_pt_sess.sess_cmd_lock);

xcopy_pt_nacl.se_tpg = &xcopy_pt_tpg;
xcopy_pt_nacl.nacl_sess = &xcopy_pt_sess;
@@ -644,7 +646,7 @@ static int target_xcopy_read_source(
pr_debug("XCOPY: Built READ_16: LBA: %llu Sectors: %u Length: %u\n",
(unsigned long long)src_lba, src_sectors, length);

- transport_init_se_cmd(se_cmd, &xcopy_pt_tfo, NULL, length,
+ transport_init_se_cmd(se_cmd, &xcopy_pt_tfo, &xcopy_pt_sess, length,
DMA_FROM_DEVICE, 0, &xpt_cmd->sense_buffer[0]);
xop->src_pt_cmd = xpt_cmd;

@@ -704,7 +706,7 @@ static int target_xcopy_write_destination(
pr_debug("XCOPY: Built WRITE_16: LBA: %llu Sectors: %u Length: %u\n",
(unsigned long long)dst_lba, dst_sectors, length);

- transport_init_se_cmd(se_cmd, &xcopy_pt_tfo, NULL, length,
+ transport_init_se_cmd(se_cmd, &xcopy_pt_tfo, &xcopy_pt_sess, length,
DMA_TO_DEVICE, 0, &xpt_cmd->sense_buffer[0]);
xop->dst_pt_cmd = xpt_cmd;

diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index 620dcd405ff6..42c6f71bdcc1 100644
--- a/drivers/thermal/cpu_cooling.c
+++ b/drivers/thermal/cpu_cooling.c
@@ -262,7 +262,9 @@ static int cpufreq_thermal_notifier(struct notifier_block *nb,
* efficiently. Power is stored in mW, frequency in KHz. The
* resulting table is in ascending order.
*
- * Return: 0 on success, -E* on error.
+ * Return: 0 on success, -EINVAL if there are no OPPs for any CPUs,
+ * -ENOMEM if we run out of memory or -EAGAIN if an OPP was
+ * added/enabled while the function was executing.
*/
static int build_dyn_power_table(struct cpufreq_cooling_device *cpufreq_device,
u32 capacitance)
@@ -273,8 +275,6 @@ static int build_dyn_power_table(struct cpufreq_cooling_device *cpufreq_device,
int num_opps = 0, cpu, i, ret = 0;
unsigned long freq;

- rcu_read_lock();
-
for_each_cpu(cpu, &cpufreq_device->allowed_cpus) {
dev = get_cpu_device(cpu);
if (!dev) {
@@ -284,24 +284,20 @@ static int build_dyn_power_table(struct cpufreq_cooling_device *cpufreq_device,
}

num_opps = dev_pm_opp_get_opp_count(dev);
- if (num_opps > 0) {
+ if (num_opps > 0)
break;
- } else if (num_opps < 0) {
- ret = num_opps;
- goto unlock;
- }
+ else if (num_opps < 0)
+ return num_opps;
}

- if (num_opps == 0) {
- ret = -EINVAL;
- goto unlock;
- }
+ if (num_opps == 0)
+ return -EINVAL;

power_table = kcalloc(num_opps, sizeof(*power_table), GFP_KERNEL);
- if (!power_table) {
- ret = -ENOMEM;
- goto unlock;
- }
+ if (!power_table)
+ return -ENOMEM;
+
+ rcu_read_lock();

for (freq = 0, i = 0;
opp = dev_pm_opp_find_freq_ceil(dev, &freq), !IS_ERR(opp);
@@ -309,6 +305,12 @@ static int build_dyn_power_table(struct cpufreq_cooling_device *cpufreq_device,
u32 freq_mhz, voltage_mv;
u64 power;

+ if (i >= num_opps) {
+ rcu_read_unlock();
+ ret = -EAGAIN;
+ goto free_power_table;
+ }
+
freq_mhz = freq / 1000000;
voltage_mv = dev_pm_opp_get_voltage(opp) / 1000;

@@ -326,17 +328,22 @@ static int build_dyn_power_table(struct cpufreq_cooling_device *cpufreq_device,
power_table[i].power = power;
}

- if (i == 0) {
+ rcu_read_unlock();
+
+ if (i != num_opps) {
ret = PTR_ERR(opp);
- goto unlock;
+ goto free_power_table;
}

cpufreq_device->cpu_dev = dev;
cpufreq_device->dyn_power_table = power_table;
cpufreq_device->dyn_power_table_entries = i;

-unlock:
- rcu_read_unlock();
+ return 0;
+
+free_power_table:
+ kfree(power_table);
+
return ret;
}

@@ -847,7 +854,7 @@ __cpufreq_cooling_register(struct device_node *np,
ret = get_idr(&cpufreq_idr, &cpufreq_dev->id);
if (ret) {
cool_dev = ERR_PTR(ret);
- goto free_table;
+ goto free_power_table;
}

snprintf(dev_name, sizeof(dev_name), "thermal-cpufreq-%d",
@@ -889,6 +896,8 @@ __cpufreq_cooling_register(struct device_node *np,

remove_idr:
release_idr(&cpufreq_idr, cpufreq_dev->id);
+free_power_table:
+ kfree(cpufreq_dev->dyn_power_table);
free_table:
kfree(cpufreq_dev->freq_table);
free_time_in_idle_timestamp:
@@ -1039,6 +1048,7 @@ void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)

thermal_cooling_device_unregister(cpufreq_dev->cool_dev);
release_idr(&cpufreq_idr, cpufreq_dev->id);
+ kfree(cpufreq_dev->dyn_power_table);
kfree(cpufreq_dev->time_in_idle_timestamp);
kfree(cpufreq_dev->time_in_idle);
kfree(cpufreq_dev->freq_table);
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index ee8bfacf2071..afc1879f66e0 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -343,8 +343,7 @@ static void n_tty_packet_mode_flush(struct tty_struct *tty)
spin_lock_irqsave(&tty->ctrl_lock, flags);
tty->ctrl_status |= TIOCPKT_FLUSHREAD;
spin_unlock_irqrestore(&tty->ctrl_lock, flags);
- if (waitqueue_active(&tty->link->read_wait))
- wake_up_interruptible(&tty->link->read_wait);
+ wake_up_interruptible(&tty->link->read_wait);
}
}

@@ -1382,8 +1381,7 @@ handle_newline:
put_tty_queue(c, ldata);
smp_store_release(&ldata->canon_head, ldata->read_head);
kill_fasync(&tty->fasync, SIGIO, POLL_IN);
- if (waitqueue_active(&tty->read_wait))
- wake_up_interruptible_poll(&tty->read_wait, POLLIN);
+ wake_up_interruptible_poll(&tty->read_wait, POLLIN);
return 0;
}
}
@@ -1667,8 +1665,7 @@ static void __receive_buf(struct tty_struct *tty, const unsigned char *cp,

if ((read_cnt(ldata) >= ldata->minimum_to_wake) || L_EXTPROC(tty)) {
kill_fasync(&tty->fasync, SIGIO, POLL_IN);
- if (waitqueue_active(&tty->read_wait))
- wake_up_interruptible_poll(&tty->read_wait, POLLIN);
+ wake_up_interruptible_poll(&tty->read_wait, POLLIN);
}
}

@@ -1887,10 +1884,8 @@ static void n_tty_set_termios(struct tty_struct *tty, struct ktermios *old)
}

/* The termios change make the tty ready for I/O */
- if (waitqueue_active(&tty->write_wait))
- wake_up_interruptible(&tty->write_wait);
- if (waitqueue_active(&tty->read_wait))
- wake_up_interruptible(&tty->read_wait);
+ wake_up_interruptible(&tty->write_wait);
+ wake_up_interruptible(&tty->read_wait);
}

/**
diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
index 37fff12dd4d0..c35d96ece8ff 100644
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -326,6 +326,14 @@ configured less than Maximum supported fifo bytes */
UART_FCR7_64BYTE,
.flags = UART_CAP_FIFO,
},
+ [PORT_RT2880] = {
+ .name = "Palmchip BK-3103",
+ .fifo_size = 16,
+ .tx_loadsz = 16,
+ .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10,
+ .rxtrig_bytes = {1, 4, 8, 14},
+ .flags = UART_CAP_FIFO,
+ },
};

/* Uart divisor latch read */
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index 2a8f528153e7..40326b342762 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -2641,7 +2641,7 @@ static int atmel_serial_probe(struct platform_device *pdev)
ret = atmel_init_gpios(port, &pdev->dev);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to initialize GPIOs.");
- goto err;
+ goto err_clear_bit;
}

ret = atmel_init_port(port, pdev);
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 57fc6ee12332..774df354af55 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -2136,8 +2136,24 @@ retry_open:
if (!noctty &&
current->signal->leader &&
!current->signal->tty &&
- tty->session == NULL)
- __proc_set_tty(tty);
+ tty->session == NULL) {
+ /*
+ * Don't let a process that only has write access to the tty
+ * obtain the privileges associated with having a tty as
+ * controlling terminal (being able to reopen it with full
+ * access through /dev/tty, being able to perform pushback).
+ * Many distributions set the group of all ttys to "tty" and
+ * grant write-only access to all terminals for setgid tty
+ * binaries, which should not imply full privileges on all ttys.
+ *
+ * This could theoretically break old code that performs open()
+ * on a write-only file descriptor. In that case, it might be
+ * necessary to also permit this if
+ * inode_permission(inode, MAY_READ) == 0.
+ */
+ if (filp->f_mode & FMODE_READ)
+ __proc_set_tty(tty);
+ }
spin_unlock_irq(&current->sighand->siglock);
read_unlock(&tasklist_lock);
tty_unlock(tty);
@@ -2426,7 +2442,7 @@ static int fionbio(struct file *file, int __user *p)
* Takes ->siglock() when updating signal->tty
*/

-static int tiocsctty(struct tty_struct *tty, int arg)
+static int tiocsctty(struct tty_struct *tty, struct file *file, int arg)
{
int ret = 0;

@@ -2460,6 +2476,13 @@ static int tiocsctty(struct tty_struct *tty, int arg)
goto unlock;
}
}
+
+ /* See the comment in tty_open(). */
+ if ((file->f_mode & FMODE_READ) == 0 && !capable(CAP_SYS_ADMIN)) {
+ ret = -EPERM;
+ goto unlock;
+ }
+
proc_set_tty(tty);
unlock:
read_unlock(&tasklist_lock);
@@ -2852,7 +2875,7 @@ long tty_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
no_tty();
return 0;
case TIOCSCTTY:
- return tiocsctty(tty, arg);
+ return tiocsctty(tty, file, arg);
case TIOCGPGRP:
return tiocgpgrp(tty, real_tty, p);
case TIOCSPGRP:
diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c
index 389f0e034259..fa774323ebda 100644
--- a/drivers/usb/chipidea/ci_hdrc_imx.c
+++ b/drivers/usb/chipidea/ci_hdrc_imx.c
@@ -56,7 +56,7 @@ static const struct of_device_id ci_hdrc_imx_dt_ids[] = {
{ .compatible = "fsl,imx27-usb", .data = &imx27_usb_data},
{ .compatible = "fsl,imx6q-usb", .data = &imx6q_usb_data},
{ .compatible = "fsl,imx6sl-usb", .data = &imx6sl_usb_data},
- { .compatible = "fsl,imx6sx-usb", .data = &imx6sl_usb_data},
+ { .compatible = "fsl,imx6sx-usb", .data = &imx6sx_usb_data},
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, ci_hdrc_imx_dt_ids);
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 764f668d45a9..6e53c24fa1cb 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -656,6 +656,44 @@ __acquires(hwep->lock)
return 0;
}

+static int _ep_set_halt(struct usb_ep *ep, int value, bool check_transfer)
+{
+ struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep);
+ int direction, retval = 0;
+ unsigned long flags;
+
+ if (ep == NULL || hwep->ep.desc == NULL)
+ return -EINVAL;
+
+ if (usb_endpoint_xfer_isoc(hwep->ep.desc))
+ return -EOPNOTSUPP;
+
+ spin_lock_irqsave(hwep->lock, flags);
+
+ if (value && hwep->dir == TX && check_transfer &&
+ !list_empty(&hwep->qh.queue) &&
+ !usb_endpoint_xfer_control(hwep->ep.desc)) {
+ spin_unlock_irqrestore(hwep->lock, flags);
+ return -EAGAIN;
+ }
+
+ direction = hwep->dir;
+ do {
+ retval |= hw_ep_set_halt(hwep->ci, hwep->num, hwep->dir, value);
+
+ if (!value)
+ hwep->wedge = 0;
+
+ if (hwep->type == USB_ENDPOINT_XFER_CONTROL)
+ hwep->dir = (hwep->dir == TX) ? RX : TX;
+
+ } while (hwep->dir != direction);
+
+ spin_unlock_irqrestore(hwep->lock, flags);
+ return retval;
+}
+
+
/**
* _gadget_stop_activity: stops all USB activity, flushes & disables all endpts
* @gadget: gadget
@@ -1051,7 +1089,7 @@ __acquires(ci->lock)
num += ci->hw_ep_max / 2;

spin_unlock(&ci->lock);
- err = usb_ep_set_halt(&ci->ci_hw_ep[num].ep);
+ err = _ep_set_halt(&ci->ci_hw_ep[num].ep, 1, false);
spin_lock(&ci->lock);
if (!err)
isr_setup_status_phase(ci);
@@ -1110,8 +1148,8 @@ delegate:

if (err < 0) {
spin_unlock(&ci->lock);
- if (usb_ep_set_halt(&hwep->ep))
- dev_err(ci->dev, "error: ep_set_halt\n");
+ if (_ep_set_halt(&hwep->ep, 1, false))
+ dev_err(ci->dev, "error: _ep_set_halt\n");
spin_lock(&ci->lock);
}
}
@@ -1142,9 +1180,9 @@ __acquires(ci->lock)
err = isr_setup_status_phase(ci);
if (err < 0) {
spin_unlock(&ci->lock);
- if (usb_ep_set_halt(&hwep->ep))
+ if (_ep_set_halt(&hwep->ep, 1, false))
dev_err(ci->dev,
- "error: ep_set_halt\n");
+ "error: _ep_set_halt\n");
spin_lock(&ci->lock);
}
}
@@ -1390,41 +1428,7 @@ static int ep_dequeue(struct usb_ep *ep, struct usb_request *req)
*/
static int ep_set_halt(struct usb_ep *ep, int value)
{
- struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep);
- int direction, retval = 0;
- unsigned long flags;
-
- if (ep == NULL || hwep->ep.desc == NULL)
- return -EINVAL;
-
- if (usb_endpoint_xfer_isoc(hwep->ep.desc))
- return -EOPNOTSUPP;
-
- spin_lock_irqsave(hwep->lock, flags);
-
-#ifndef STALL_IN
- /* g_file_storage MS compliant but g_zero fails chapter 9 compliance */
- if (value && hwep->type == USB_ENDPOINT_XFER_BULK && hwep->dir == TX &&
- !list_empty(&hwep->qh.queue)) {
- spin_unlock_irqrestore(hwep->lock, flags);
- return -EAGAIN;
- }
-#endif
-
- direction = hwep->dir;
- do {
- retval |= hw_ep_set_halt(hwep->ci, hwep->num, hwep->dir, value);
-
- if (!value)
- hwep->wedge = 0;
-
- if (hwep->type == USB_ENDPOINT_XFER_CONTROL)
- hwep->dir = (hwep->dir == TX) ? RX : TX;
-
- } while (hwep->dir != direction);
-
- spin_unlock_irqrestore(hwep->lock, flags);
- return retval;
+ return _ep_set_halt(ep, value, true);
}

/**
diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index b2a540b43f97..b9ddf0c1ffe5 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -112,7 +112,7 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
cfgno, inum, asnum, ep->desc.bEndpointAddress);
ep->ss_ep_comp.bmAttributes = 16;
} else if (usb_endpoint_xfer_isoc(&ep->desc) &&
- desc->bmAttributes > 2) {
+ USB_SS_MULT(desc->bmAttributes) > 3) {
dev_warn(ddev, "Isoc endpoint has Mult of %d in "
"config %d interface %d altsetting %d ep %d: "
"setting to 3\n", desc->bmAttributes + 1,
@@ -121,7 +121,8 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
}

if (usb_endpoint_xfer_isoc(&ep->desc))
- max_tx = (desc->bMaxBurst + 1) * (desc->bmAttributes + 1) *
+ max_tx = (desc->bMaxBurst + 1) *
+ (USB_SS_MULT(desc->bmAttributes)) *
usb_endpoint_maxp(&ep->desc);
else if (usb_endpoint_xfer_int(&ep->desc))
max_tx = usb_endpoint_maxp(&ep->desc) *
diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index d85abfed84cc..f5a381945db2 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -54,6 +54,13 @@ static const struct usb_device_id usb_quirk_list[] = {
{ USB_DEVICE(0x046d, 0x082d), .driver_info = USB_QUIRK_DELAY_INIT },
{ USB_DEVICE(0x046d, 0x0843), .driver_info = USB_QUIRK_DELAY_INIT },

+ /* Logitech ConferenceCam CC3000e */
+ { USB_DEVICE(0x046d, 0x0847), .driver_info = USB_QUIRK_DELAY_INIT },
+ { USB_DEVICE(0x046d, 0x0848), .driver_info = USB_QUIRK_DELAY_INIT },
+
+ /* Logitech PTZ Pro Camera */
+ { USB_DEVICE(0x046d, 0x0853), .driver_info = USB_QUIRK_DELAY_INIT },
+
/* Logitech Quickcam Fusion */
{ USB_DEVICE(0x046d, 0x08c1), .driver_info = USB_QUIRK_RESET_RESUME },

@@ -78,6 +85,12 @@ static const struct usb_device_id usb_quirk_list[] = {
/* Philips PSC805 audio device */
{ USB_DEVICE(0x0471, 0x0155), .driver_info = USB_QUIRK_RESET_RESUME },

+ /* Plantronic Audio 655 DSP */
+ { USB_DEVICE(0x047f, 0xc008), .driver_info = USB_QUIRK_RESET_RESUME },
+
+ /* Plantronic Audio 648 USB */
+ { USB_DEVICE(0x047f, 0xc013), .driver_info = USB_QUIRK_RESET_RESUME },
+
/* Artisman Watchdog Dongle */
{ USB_DEVICE(0x04b4, 0x0526), .driver_info =
USB_QUIRK_CONFIG_INTF_STRINGS },
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index 9a8c936cd42c..41f841fa6c4d 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -1498,10 +1498,10 @@ int xhci_endpoint_init(struct xhci_hcd *xhci,
* use Event Data TRBs, and we don't chain in a link TRB on short
* transfers, we're basically dividing by 1.
*
- * xHCI 1.0 specification indicates that the Average TRB Length should
- * be set to 8 for control endpoints.
+ * xHCI 1.0 and 1.1 specification indicates that the Average TRB Length
+ * should be set to 8 for control endpoints.
*/
- if (usb_endpoint_xfer_control(&ep->desc) && xhci->hci_version == 0x100)
+ if (usb_endpoint_xfer_control(&ep->desc) && xhci->hci_version >= 0x100)
ep_ctx->tx_info |= cpu_to_le32(AVG_TRB_LENGTH_FOR_EP(8));
else
ep_ctx->tx_info |=
@@ -1792,8 +1792,7 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
int size;
int i, j, num_ports;

- if (timer_pending(&xhci->cmd_timer))
- del_timer_sync(&xhci->cmd_timer);
+ del_timer_sync(&xhci->cmd_timer);

/* Free the Event Ring Segment Table and the actual Event Ring */
size = sizeof(struct xhci_erst_entry)*(xhci->erst.num_entries);
@@ -2321,6 +2320,10 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)

INIT_LIST_HEAD(&xhci->cmd_list);

+ /* init command timeout timer */
+ setup_timer(&xhci->cmd_timer, xhci_handle_command_timeout,
+ (unsigned long)xhci);
+
page_size = readl(&xhci->op_regs->page_size);
xhci_dbg_trace(xhci, trace_xhci_dbg_init,
"Supported page size register = 0x%x", page_size);
@@ -2505,10 +2508,6 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
"Wrote ERST address to ir_set 0.");
xhci_print_ir_set(xhci, 0);

- /* init command timeout timer */
- setup_timer(&xhci->cmd_timer, xhci_handle_command_timeout,
- (unsigned long)xhci);
-
/*
* XXX: Might need to set the Interrupter Moderation Register to
* something other than the default (~1ms minimum between interrupts).
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 5590eac2b22d..c79d33676672 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -180,51 +180,6 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
"QUIRK: Resetting on resume");
}

-/*
- * In some Intel xHCI controllers, in order to get D3 working,
- * through a vendor specific SSIC CONFIG register at offset 0x883c,
- * SSIC PORT need to be marked as "unused" before putting xHCI
- * into D3. After D3 exit, the SSIC port need to be marked as "used".
- * Without this change, xHCI might not enter D3 state.
- * Make sure PME works on some Intel xHCI controllers by writing 1 to clear
- * the Internal PME flag bit in vendor specific PMCTRL register at offset 0x80a4
- */
-static void xhci_pme_quirk(struct usb_hcd *hcd, bool suspend)
-{
- struct xhci_hcd *xhci = hcd_to_xhci(hcd);
- struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
- u32 val;
- void __iomem *reg;
-
- if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
- pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI) {
-
- reg = (void __iomem *) xhci->cap_regs + PORT2_SSIC_CONFIG_REG2;
-
- /* Notify SSIC that SSIC profile programming is not done */
- val = readl(reg) & ~PROG_DONE;
- writel(val, reg);
-
- /* Mark SSIC port as unused(suspend) or used(resume) */
- val = readl(reg);
- if (suspend)
- val |= SSIC_PORT_UNUSED;
- else
- val &= ~SSIC_PORT_UNUSED;
- writel(val, reg);
-
- /* Notify SSIC that SSIC profile programming is done */
- val = readl(reg) | PROG_DONE;
- writel(val, reg);
- readl(reg);
- }
-
- reg = (void __iomem *) xhci->cap_regs + 0x80a4;
- val = readl(reg);
- writel(val | BIT(28), reg);
- readl(reg);
-}
-
#ifdef CONFIG_ACPI
static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev)
{
@@ -345,6 +300,51 @@ static void xhci_pci_remove(struct pci_dev *dev)
}

#ifdef CONFIG_PM
+/*
+ * In some Intel xHCI controllers, in order to get D3 working,
+ * through a vendor specific SSIC CONFIG register at offset 0x883c,
+ * SSIC PORT need to be marked as "unused" before putting xHCI
+ * into D3. After D3 exit, the SSIC port need to be marked as "used".
+ * Without this change, xHCI might not enter D3 state.
+ * Make sure PME works on some Intel xHCI controllers by writing 1 to clear
+ * the Internal PME flag bit in vendor specific PMCTRL register at offset 0x80a4
+ */
+static void xhci_pme_quirk(struct usb_hcd *hcd, bool suspend)
+{
+ struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+ struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
+ u32 val;
+ void __iomem *reg;
+
+ if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
+ pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI) {
+
+ reg = (void __iomem *) xhci->cap_regs + PORT2_SSIC_CONFIG_REG2;
+
+ /* Notify SSIC that SSIC profile programming is not done */
+ val = readl(reg) & ~PROG_DONE;
+ writel(val, reg);
+
+ /* Mark SSIC port as unused(suspend) or used(resume) */
+ val = readl(reg);
+ if (suspend)
+ val |= SSIC_PORT_UNUSED;
+ else
+ val &= ~SSIC_PORT_UNUSED;
+ writel(val, reg);
+
+ /* Notify SSIC that SSIC profile programming is done */
+ val = readl(reg) | PROG_DONE;
+ writel(val, reg);
+ readl(reg);
+ }
+
+ reg = (void __iomem *) xhci->cap_regs + 0x80a4;
+ val = readl(reg);
+ writel(val | BIT(28), reg);
+ readl(reg);
+}
+
static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
{
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 32f4d564494a..8aadf3def901 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -302,6 +302,15 @@ static int xhci_abort_cmd_ring(struct xhci_hcd *xhci)
ret = xhci_handshake(&xhci->op_regs->cmd_ring,
CMD_RING_RUNNING, 0, 5 * 1000 * 1000);
if (ret < 0) {
+ /* we are about to kill xhci, give it one more chance */
+ xhci_write_64(xhci, temp_64 | CMD_RING_ABORT,
+ &xhci->op_regs->cmd_ring);
+ udelay(1000);
+ ret = xhci_handshake(&xhci->op_regs->cmd_ring,
+ CMD_RING_RUNNING, 0, 3 * 1000 * 1000);
+ if (ret == 0)
+ return 0;
+
xhci_err(xhci, "Stopped the command ring failed, "
"maybe the host is dead\n");
xhci->xhc_state |= XHCI_STATE_DYING;
@@ -3041,9 +3050,11 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
struct xhci_td *td;
struct scatterlist *sg;
int num_sgs;
- int trb_buff_len, this_sg_len, running_total;
+ int trb_buff_len, this_sg_len, running_total, ret;
unsigned int total_packet_count;
+ bool zero_length_needed;
bool first_trb;
+ int last_trb_num;
u64 addr;
bool more_trbs_coming;

@@ -3059,13 +3070,27 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
total_packet_count = DIV_ROUND_UP(urb->transfer_buffer_length,
usb_endpoint_maxp(&urb->ep->desc));

- trb_buff_len = prepare_transfer(xhci, xhci->devs[slot_id],
+ ret = prepare_transfer(xhci, xhci->devs[slot_id],
ep_index, urb->stream_id,
num_trbs, urb, 0, mem_flags);
- if (trb_buff_len < 0)
- return trb_buff_len;
+ if (ret < 0)
+ return ret;

urb_priv = urb->hcpriv;
+
+ /* Deal with URB_ZERO_PACKET - need one more td/trb */
+ zero_length_needed = urb->transfer_flags & URB_ZERO_PACKET &&
+ urb_priv->length == 2;
+ if (zero_length_needed) {
+ num_trbs++;
+ xhci_dbg(xhci, "Creating zero length td.\n");
+ ret = prepare_transfer(xhci, xhci->devs[slot_id],
+ ep_index, urb->stream_id,
+ 1, urb, 1, mem_flags);
+ if (ret < 0)
+ return ret;
+ }
+
td = urb_priv->td[0];

/*
@@ -3095,6 +3120,7 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
trb_buff_len = urb->transfer_buffer_length;

first_trb = true;
+ last_trb_num = zero_length_needed ? 2 : 1;
/* Queue the first TRB, even if it's zero-length */
do {
u32 field = 0;
@@ -3112,12 +3138,15 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
/* Chain all the TRBs together; clear the chain bit in the last
* TRB to indicate it's the last TRB in the chain.
*/
- if (num_trbs > 1) {
+ if (num_trbs > last_trb_num) {
field |= TRB_CHAIN;
- } else {
- /* FIXME - add check for ZERO_PACKET flag before this */
+ } else if (num_trbs == last_trb_num) {
td->last_trb = ep_ring->enqueue;
field |= TRB_IOC;
+ } else if (zero_length_needed && num_trbs == 1) {
+ trb_buff_len = 0;
+ urb_priv->td[1]->last_trb = ep_ring->enqueue;
+ field |= TRB_IOC;
}

/* Only set interrupt on short packet for IN endpoints */
@@ -3179,7 +3208,7 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
if (running_total + trb_buff_len > urb->transfer_buffer_length)
trb_buff_len =
urb->transfer_buffer_length - running_total;
- } while (running_total < urb->transfer_buffer_length);
+ } while (num_trbs > 0);

check_trb_math(urb, num_trbs, running_total);
giveback_first_trb(xhci, slot_id, ep_index, urb->stream_id,
@@ -3197,7 +3226,9 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
int num_trbs;
struct xhci_generic_trb *start_trb;
bool first_trb;
+ int last_trb_num;
bool more_trbs_coming;
+ bool zero_length_needed;
int start_cycle;
u32 field, length_field;

@@ -3228,7 +3259,6 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
num_trbs++;
running_total += TRB_MAX_BUFF_SIZE;
}
- /* FIXME: this doesn't deal with URB_ZERO_PACKET - need one more */

ret = prepare_transfer(xhci, xhci->devs[slot_id],
ep_index, urb->stream_id,
@@ -3237,6 +3267,20 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
return ret;

urb_priv = urb->hcpriv;
+
+ /* Deal with URB_ZERO_PACKET - need one more td/trb */
+ zero_length_needed = urb->transfer_flags & URB_ZERO_PACKET &&
+ urb_priv->length == 2;
+ if (zero_length_needed) {
+ num_trbs++;
+ xhci_dbg(xhci, "Creating zero length td.\n");
+ ret = prepare_transfer(xhci, xhci->devs[slot_id],
+ ep_index, urb->stream_id,
+ 1, urb, 1, mem_flags);
+ if (ret < 0)
+ return ret;
+ }
+
td = urb_priv->td[0];

/*
@@ -3258,7 +3302,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
trb_buff_len = urb->transfer_buffer_length;

first_trb = true;
-
+ last_trb_num = zero_length_needed ? 2 : 1;
/* Queue the first TRB, even if it's zero-length */
do {
u32 remainder = 0;
@@ -3275,12 +3319,15 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
/* Chain all the TRBs together; clear the chain bit in the last
* TRB to indicate it's the last TRB in the chain.
*/
- if (num_trbs > 1) {
+ if (num_trbs > last_trb_num) {
field |= TRB_CHAIN;
- } else {
- /* FIXME - add check for ZERO_PACKET flag before this */
+ } else if (num_trbs == last_trb_num) {
td->last_trb = ep_ring->enqueue;
field |= TRB_IOC;
+ } else if (zero_length_needed && num_trbs == 1) {
+ trb_buff_len = 0;
+ urb_priv->td[1]->last_trb = ep_ring->enqueue;
+ field |= TRB_IOC;
}

/* Only set interrupt on short packet for IN endpoints */
@@ -3318,7 +3365,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
trb_buff_len = urb->transfer_buffer_length - running_total;
if (trb_buff_len > TRB_MAX_BUFF_SIZE)
trb_buff_len = TRB_MAX_BUFF_SIZE;
- } while (running_total < urb->transfer_buffer_length);
+ } while (num_trbs > 0);

check_trb_math(urb, num_trbs, running_total);
giveback_first_trb(xhci, slot_id, ep_index, urb->stream_id,
@@ -3385,8 +3432,8 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
if (start_cycle == 0)
field |= 0x1;

- /* xHCI 1.0 6.4.1.2.1: Transfer Type field */
- if (xhci->hci_version == 0x100) {
+ /* xHCI 1.0/1.1 6.4.1.2.1: Transfer Type field */
+ if (xhci->hci_version >= 0x100) {
if (urb->transfer_buffer_length > 0) {
if (setup->bRequestType & USB_DIR_IN)
field |= TRB_TX_TYPE(TRB_DATA_IN);
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 526ebc0c7e72..d7b9f484d4e9 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -146,7 +146,8 @@ static int xhci_start(struct xhci_hcd *xhci)
"waited %u microseconds.\n",
XHCI_MAX_HALT_USEC);
if (!ret)
- xhci->xhc_state &= ~XHCI_STATE_HALTED;
+ xhci->xhc_state &= ~(XHCI_STATE_HALTED | XHCI_STATE_DYING);
+
return ret;
}

@@ -654,15 +655,6 @@ int xhci_run(struct usb_hcd *hcd)
}
EXPORT_SYMBOL_GPL(xhci_run);

-static void xhci_only_stop_hcd(struct usb_hcd *hcd)
-{
- struct xhci_hcd *xhci = hcd_to_xhci(hcd);
-
- spin_lock_irq(&xhci->lock);
- xhci_halt(xhci);
- spin_unlock_irq(&xhci->lock);
-}
-
/*
* Stop xHCI driver.
*
@@ -677,12 +669,14 @@ void xhci_stop(struct usb_hcd *hcd)
u32 temp;
struct xhci_hcd *xhci = hcd_to_xhci(hcd);

- if (!usb_hcd_is_primary_hcd(hcd)) {
- xhci_only_stop_hcd(xhci->shared_hcd);
+ if (xhci->xhc_state & XHCI_STATE_HALTED)
return;
- }

+ mutex_lock(&xhci->mutex);
spin_lock_irq(&xhci->lock);
+ xhci->xhc_state |= XHCI_STATE_HALTED;
+ xhci->cmd_ring_state = CMD_RING_STATE_STOPPED;
+
/* Make sure the xHC is halted for a USB3 roothub
* (xhci_stop() could be called as part of failed init).
*/
@@ -717,6 +711,7 @@ void xhci_stop(struct usb_hcd *hcd)
xhci_dbg_trace(xhci, trace_xhci_dbg_init,
"xhci_stop completed - status = %x",
readl(&xhci->op_regs->status));
+ mutex_unlock(&xhci->mutex);
}

/*
@@ -1340,6 +1335,11 @@ int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags)

if (usb_endpoint_xfer_isoc(&urb->ep->desc))
size = urb->number_of_packets;
+ else if (usb_endpoint_is_bulk_out(&urb->ep->desc) &&
+ urb->transfer_buffer_length > 0 &&
+ urb->transfer_flags & URB_ZERO_PACKET &&
+ !(urb->transfer_buffer_length % usb_endpoint_maxp(&urb->ep->desc)))
+ size = 2;
else
size = 1;

@@ -3788,6 +3788,9 @@ static int xhci_setup_device(struct usb_hcd *hcd, struct usb_device *udev,

mutex_lock(&xhci->mutex);

+ if (xhci->xhc_state) /* dying or halted */
+ goto out;
+
if (!udev->slot_id) {
xhci_dbg_trace(xhci, trace_xhci_dbg_address,
"Bad Slot ID %d", udev->slot_id);
diff --git a/drivers/usb/misc/chaoskey.c b/drivers/usb/misc/chaoskey.c
index 3ad5d19e4d04..23c794813e6a 100644
--- a/drivers/usb/misc/chaoskey.c
+++ b/drivers/usb/misc/chaoskey.c
@@ -472,7 +472,7 @@ static int chaoskey_rng_read(struct hwrng *rng, void *data,
if (this_time > max)
this_time = max;

- memcpy(data, dev->buf, this_time);
+ memcpy(data, dev->buf + dev->used, this_time);

dev->used += this_time;

diff --git a/drivers/usb/musb/musb_cppi41.c b/drivers/usb/musb/musb_cppi41.c
index 4d1b44c232ee..d07cafb7d5f5 100644
--- a/drivers/usb/musb/musb_cppi41.c
+++ b/drivers/usb/musb/musb_cppi41.c
@@ -614,7 +614,7 @@ static int cppi41_dma_controller_start(struct cppi41_dma_controller *controller)
{
struct musb *musb = controller->musb;
struct device *dev = musb->controller;
- struct device_node *np = dev->of_node;
+ struct device_node *np = dev->parent->of_node;
struct cppi41_dma_channel *cppi41_channel;
int count;
int i;
@@ -664,7 +664,7 @@ static int cppi41_dma_controller_start(struct cppi41_dma_controller *controller)
musb_dma->status = MUSB_DMA_STATUS_FREE;
musb_dma->max_len = SZ_4M;

- dc = dma_request_slave_channel(dev, str);
+ dc = dma_request_slave_channel(dev->parent, str);
if (!dc) {
dev_err(dev, "Failed to request %s.\n", str);
ret = -EPROBE_DEFER;
@@ -695,7 +695,7 @@ cppi41_dma_controller_create(struct musb *musb, void __iomem *base)
struct cppi41_dma_controller *controller;
int ret = 0;

- if (!musb->controller->of_node) {
+ if (!musb->controller->parent->of_node) {
dev_err(musb->controller, "Need DT for the DMA engine.\n");
return NULL;
}
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
index 1334a3de31b8..67325ec94894 100644
--- a/drivers/usb/musb/musb_dsps.c
+++ b/drivers/usb/musb/musb_dsps.c
@@ -225,8 +225,11 @@ static void dsps_musb_enable(struct musb *musb)

dsps_writel(reg_base, wrp->epintr_set, epmask);
dsps_writel(reg_base, wrp->coreintr_set, coremask);
- /* start polling for ID change. */
- mod_timer(&glue->timer, jiffies + msecs_to_jiffies(wrp->poll_timeout));
+ /* start polling for ID change in dual-role idle mode */
+ if (musb->xceiv->otg->state == OTG_STATE_B_IDLE &&
+ musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE)
+ mod_timer(&glue->timer, jiffies +
+ msecs_to_jiffies(wrp->poll_timeout));
dsps_musb_try_idle(musb, 0);
}

diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c
index deee68eafb72..0cd85f2ccddd 100644
--- a/drivers/usb/phy/phy-generic.c
+++ b/drivers/usb/phy/phy-generic.c
@@ -230,7 +230,8 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_generic *nop,
clk_rate = pdata->clk_rate;
needs_vcc = pdata->needs_vcc;
if (gpio_is_valid(pdata->gpio_reset)) {
- err = devm_gpio_request_one(dev, pdata->gpio_reset, 0,
+ err = devm_gpio_request_one(dev, pdata->gpio_reset,
+ GPIOF_ACTIVE_LOW,
dev_name(dev));
if (!err)
nop->gpiod_reset =
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 876423b8892c..7c8eb4c4c175 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -278,6 +278,10 @@ static void option_instat_callback(struct urb *urb);
#define ZTE_PRODUCT_MF622 0x0001
#define ZTE_PRODUCT_MF628 0x0015
#define ZTE_PRODUCT_MF626 0x0031
+#define ZTE_PRODUCT_ZM8620_X 0x0396
+#define ZTE_PRODUCT_ME3620_MBIM 0x0426
+#define ZTE_PRODUCT_ME3620_X 0x1432
+#define ZTE_PRODUCT_ME3620_L 0x1433
#define ZTE_PRODUCT_AC2726 0xfff1
#define ZTE_PRODUCT_MG880 0xfffd
#define ZTE_PRODUCT_CDMA_TECH 0xfffe
@@ -544,6 +548,18 @@ static const struct option_blacklist_info zte_mc2716_z_blacklist = {
.sendsetup = BIT(1) | BIT(2) | BIT(3),
};

+static const struct option_blacklist_info zte_me3620_mbim_blacklist = {
+ .reserved = BIT(2) | BIT(3) | BIT(4),
+};
+
+static const struct option_blacklist_info zte_me3620_xl_blacklist = {
+ .reserved = BIT(3) | BIT(4) | BIT(5),
+};
+
+static const struct option_blacklist_info zte_zm8620_x_blacklist = {
+ .reserved = BIT(3) | BIT(4) | BIT(5),
+};
+
static const struct option_blacklist_info huawei_cdc12_blacklist = {
.reserved = BIT(1) | BIT(2),
};
@@ -1591,6 +1607,14 @@ static const struct usb_device_id option_ids[] = {
.driver_info = (kernel_ulong_t)&zte_ad3812_z_blacklist },
{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MC2716, 0xff, 0xff, 0xff),
.driver_info = (kernel_ulong_t)&zte_mc2716_z_blacklist },
+ { USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_ME3620_L),
+ .driver_info = (kernel_ulong_t)&zte_me3620_xl_blacklist },
+ { USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_ME3620_MBIM),
+ .driver_info = (kernel_ulong_t)&zte_me3620_mbim_blacklist },
+ { USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_ME3620_X),
+ .driver_info = (kernel_ulong_t)&zte_me3620_xl_blacklist },
+ { USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_ZM8620_X),
+ .driver_info = (kernel_ulong_t)&zte_zm8620_x_blacklist },
{ USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x02, 0x01) },
{ USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x02, 0x05) },
{ USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x86, 0x10) },
diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c
index 6c3734d2b45a..d3ea90bef84d 100644
--- a/drivers/usb/serial/whiteheat.c
+++ b/drivers/usb/serial/whiteheat.c
@@ -80,6 +80,8 @@ static int whiteheat_firmware_download(struct usb_serial *serial,
static int whiteheat_firmware_attach(struct usb_serial *serial);

/* function prototypes for the Connect Tech WhiteHEAT serial converter */
+static int whiteheat_probe(struct usb_serial *serial,
+ const struct usb_device_id *id);
static int whiteheat_attach(struct usb_serial *serial);
static void whiteheat_release(struct usb_serial *serial);
static int whiteheat_port_probe(struct usb_serial_port *port);
@@ -116,6 +118,7 @@ static struct usb_serial_driver whiteheat_device = {
.description = "Connect Tech - WhiteHEAT",
.id_table = id_table_std,
.num_ports = 4,
+ .probe = whiteheat_probe,
.attach = whiteheat_attach,
.release = whiteheat_release,
.port_probe = whiteheat_port_probe,
@@ -217,6 +220,34 @@ static int whiteheat_firmware_attach(struct usb_serial *serial)
/*****************************************************************************
* Connect Tech's White Heat serial driver functions
*****************************************************************************/
+
+static int whiteheat_probe(struct usb_serial *serial,
+ const struct usb_device_id *id)
+{
+ struct usb_host_interface *iface_desc;
+ struct usb_endpoint_descriptor *endpoint;
+ size_t num_bulk_in = 0;
+ size_t num_bulk_out = 0;
+ size_t min_num_bulk;
+ unsigned int i;
+
+ iface_desc = serial->interface->cur_altsetting;
+
+ for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
+ endpoint = &iface_desc->endpoint[i].desc;
+ if (usb_endpoint_is_bulk_in(endpoint))
+ ++num_bulk_in;
+ if (usb_endpoint_is_bulk_out(endpoint))
+ ++num_bulk_out;
+ }
+
+ min_num_bulk = COMMAND_PORT + 1;
+ if (num_bulk_in < min_num_bulk || num_bulk_out < min_num_bulk)
+ return -ENODEV;
+
+ return 0;
+}
+
static int whiteheat_attach(struct usb_serial *serial)
{
struct usb_serial_port *command_port;
diff --git a/drivers/watchdog/imgpdc_wdt.c b/drivers/watchdog/imgpdc_wdt.c
index 0f73621827ab..15ab07230960 100644
--- a/drivers/watchdog/imgpdc_wdt.c
+++ b/drivers/watchdog/imgpdc_wdt.c
@@ -316,6 +316,7 @@ static int pdc_wdt_remove(struct platform_device *pdev)
{
struct pdc_wdt_dev *pdc_wdt = platform_get_drvdata(pdev);

+ unregister_restart_handler(&pdc_wdt->restart_handler);
pdc_wdt_stop(&pdc_wdt->wdt_dev);
watchdog_unregister_device(&pdc_wdt->wdt_dev);
clk_disable_unprepare(pdc_wdt->wdt_clk);
diff --git a/drivers/watchdog/sunxi_wdt.c b/drivers/watchdog/sunxi_wdt.c
index a29afb37c48c..47bd8a14d01f 100644
--- a/drivers/watchdog/sunxi_wdt.c
+++ b/drivers/watchdog/sunxi_wdt.c
@@ -184,7 +184,7 @@ static int sunxi_wdt_start(struct watchdog_device *wdt_dev)
/* Set system reset function */
reg = readl(wdt_base + regs->wdt_cfg);
reg &= ~(regs->wdt_reset_mask);
- reg |= ~(regs->wdt_reset_val);
+ reg |= regs->wdt_reset_val;
writel(reg, wdt_base + regs->wdt_cfg);

/* Enable watchdog */
diff --git a/drivers/xen/preempt.c b/drivers/xen/preempt.c
index a1800c150839..08cb419eb4e6 100644
--- a/drivers/xen/preempt.c
+++ b/drivers/xen/preempt.c
@@ -31,7 +31,7 @@ EXPORT_SYMBOL_GPL(xen_in_preemptible_hcall);
asmlinkage __visible void xen_maybe_preempt_hcall(void)
{
if (unlikely(__this_cpu_read(xen_in_preemptible_hcall)
- && should_resched())) {
+ && need_resched())) {
/*
* Clear flag as we may be rescheduled on a different
* cpu.
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 198243717da5..1170f8ce5e7f 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1241,6 +1241,13 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
goto out_clear;
}
bd_set_size(bdev, (loff_t)bdev->bd_part->nr_sects << 9);
+ /*
+ * If the partition is not aligned on a page
+ * boundary, we can't do dax I/O to it.
+ */
+ if ((bdev->bd_part->start_sect % (PAGE_SIZE / 512)) ||
+ (bdev->bd_part->nr_sects % (PAGE_SIZE / 512)))
+ bdev->bd_inode->i_flags &= ~S_DAX;
}
} else {
if (bdev->bd_contains == bdev) {
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 02d05817cbdf..3fc4fec9b94e 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2798,7 +2798,8 @@ static int submit_extent_page(int rw, struct extent_io_tree *tree,
bio_end_io_t end_io_func,
int mirror_num,
unsigned long prev_bio_flags,
- unsigned long bio_flags)
+ unsigned long bio_flags,
+ bool force_bio_submit)
{
int ret = 0;
struct bio *bio;
@@ -2816,6 +2817,7 @@ static int submit_extent_page(int rw, struct extent_io_tree *tree,
contig = bio_end_sector(bio) == sector;

if (prev_bio_flags != bio_flags || !contig ||
+ force_bio_submit ||
merge_bio(rw, tree, page, offset, page_size, bio, bio_flags) ||
bio_add_page(bio, page, page_size, offset) < page_size) {
ret = submit_one_bio(rw, bio, mirror_num,
@@ -2909,7 +2911,8 @@ static int __do_readpage(struct extent_io_tree *tree,
get_extent_t *get_extent,
struct extent_map **em_cached,
struct bio **bio, int mirror_num,
- unsigned long *bio_flags, int rw)
+ unsigned long *bio_flags, int rw,
+ u64 *prev_em_start)
{
struct inode *inode = page->mapping->host;
u64 start = page_offset(page);
@@ -2957,6 +2960,7 @@ static int __do_readpage(struct extent_io_tree *tree,
}
while (cur <= end) {
unsigned long pnr = (last_byte >> PAGE_CACHE_SHIFT) + 1;
+ bool force_bio_submit = false;

if (cur >= last_byte) {
char *userpage;
@@ -3007,6 +3011,49 @@ static int __do_readpage(struct extent_io_tree *tree,
block_start = em->block_start;
if (test_bit(EXTENT_FLAG_PREALLOC, &em->flags))
block_start = EXTENT_MAP_HOLE;
+
+ /*
+ * If we have a file range that points to a compressed extent
+ * and it's followed by a consecutive file range that points to
+ * to the same compressed extent (possibly with a different
+ * offset and/or length, so it either points to the whole extent
+ * or only part of it), we must make sure we do not submit a
+ * single bio to populate the pages for the 2 ranges because
+ * this makes the compressed extent read zero out the pages
+ * belonging to the 2nd range. Imagine the following scenario:
+ *
+ * File layout
+ * [0 - 8K] [8K - 24K]
+ * | |
+ * | |
+ * points to extent X, points to extent X,
+ * offset 4K, length of 8K offset 0, length 16K
+ *
+ * [extent X, compressed length = 4K uncompressed length = 16K]
+ *
+ * If the bio to read the compressed extent covers both ranges,
+ * it will decompress extent X into the pages belonging to the
+ * first range and then it will stop, zeroing out the remaining
+ * pages that belong to the other range that points to extent X.
+ * So here we make sure we submit 2 bios, one for the first
+ * range and another one for the third range. Both will target
+ * the same physical extent from disk, but we can't currently
+ * make the compressed bio endio callback populate the pages
+ * for both ranges because each compressed bio is tightly
+ * coupled with a single extent map, and each range can have
+ * an extent map with a different offset value relative to the
+ * uncompressed data of our extent and different lengths. This
+ * is a corner case so we prioritize correctness over
+ * non-optimal behavior (submitting 2 bios for the same extent).
+ */
+ if (test_bit(EXTENT_FLAG_COMPRESSED, &em->flags) &&
+ prev_em_start && *prev_em_start != (u64)-1 &&
+ *prev_em_start != em->orig_start)
+ force_bio_submit = true;
+
+ if (prev_em_start)
+ *prev_em_start = em->orig_start;
+
free_extent_map(em);
em = NULL;

@@ -3056,7 +3103,8 @@ static int __do_readpage(struct extent_io_tree *tree,
bdev, bio, pnr,
end_bio_extent_readpage, mirror_num,
*bio_flags,
- this_bio_flag);
+ this_bio_flag,
+ force_bio_submit);
if (!ret) {
nr++;
*bio_flags = this_bio_flag;
@@ -3083,7 +3131,8 @@ static inline void __do_contiguous_readpages(struct extent_io_tree *tree,
get_extent_t *get_extent,
struct extent_map **em_cached,
struct bio **bio, int mirror_num,
- unsigned long *bio_flags, int rw)
+ unsigned long *bio_flags, int rw,
+ u64 *prev_em_start)
{
struct inode *inode;
struct btrfs_ordered_extent *ordered;
@@ -3103,7 +3152,7 @@ static inline void __do_contiguous_readpages(struct extent_io_tree *tree,

for (index = 0; index < nr_pages; index++) {
__do_readpage(tree, pages[index], get_extent, em_cached, bio,
- mirror_num, bio_flags, rw);
+ mirror_num, bio_flags, rw, prev_em_start);
page_cache_release(pages[index]);
}
}
@@ -3113,7 +3162,8 @@ static void __extent_readpages(struct extent_io_tree *tree,
int nr_pages, get_extent_t *get_extent,
struct extent_map **em_cached,
struct bio **bio, int mirror_num,
- unsigned long *bio_flags, int rw)
+ unsigned long *bio_flags, int rw,
+ u64 *prev_em_start)
{
u64 start = 0;
u64 end = 0;
@@ -3134,7 +3184,7 @@ static void __extent_readpages(struct extent_io_tree *tree,
index - first_index, start,
end, get_extent, em_cached,
bio, mirror_num, bio_flags,
- rw);
+ rw, prev_em_start);
start = page_start;
end = start + PAGE_CACHE_SIZE - 1;
first_index = index;
@@ -3145,7 +3195,8 @@ static void __extent_readpages(struct extent_io_tree *tree,
__do_contiguous_readpages(tree, &pages[first_index],
index - first_index, start,
end, get_extent, em_cached, bio,
- mirror_num, bio_flags, rw);
+ mirror_num, bio_flags, rw,
+ prev_em_start);
}

static int __extent_read_full_page(struct extent_io_tree *tree,
@@ -3171,7 +3222,7 @@ static int __extent_read_full_page(struct extent_io_tree *tree,
}

ret = __do_readpage(tree, page, get_extent, NULL, bio, mirror_num,
- bio_flags, rw);
+ bio_flags, rw, NULL);
return ret;
}

@@ -3197,7 +3248,7 @@ int extent_read_full_page_nolock(struct extent_io_tree *tree, struct page *page,
int ret;

ret = __do_readpage(tree, page, get_extent, NULL, &bio, mirror_num,
- &bio_flags, READ);
+ &bio_flags, READ, NULL);
if (bio)
ret = submit_one_bio(READ, bio, mirror_num, bio_flags);
return ret;
@@ -3450,7 +3501,7 @@ static noinline_for_stack int __extent_writepage_io(struct inode *inode,
sector, iosize, pg_offset,
bdev, &epd->bio, max_nr,
end_bio_extent_writepage,
- 0, 0, 0);
+ 0, 0, 0, false);
if (ret)
SetPageError(page);
}
@@ -3752,7 +3803,7 @@ static noinline_for_stack int write_one_eb(struct extent_buffer *eb,
ret = submit_extent_page(rw, tree, p, offset >> 9,
PAGE_CACHE_SIZE, 0, bdev, &epd->bio,
-1, end_bio_extent_buffer_writepage,
- 0, epd->bio_flags, bio_flags);
+ 0, epd->bio_flags, bio_flags, false);
epd->bio_flags = bio_flags;
if (ret) {
set_btree_ioerr(p);
@@ -4156,6 +4207,7 @@ int extent_readpages(struct extent_io_tree *tree,
struct page *page;
struct extent_map *em_cached = NULL;
int nr = 0;
+ u64 prev_em_start = (u64)-1;

for (page_idx = 0; page_idx < nr_pages; page_idx++) {
page = list_entry(pages->prev, struct page, lru);
@@ -4172,12 +4224,12 @@ int extent_readpages(struct extent_io_tree *tree,
if (nr < ARRAY_SIZE(pagepool))
continue;
__extent_readpages(tree, pagepool, nr, get_extent, &em_cached,
- &bio, 0, &bio_flags, READ);
+ &bio, 0, &bio_flags, READ, &prev_em_start);
nr = 0;
}
if (nr)
__extent_readpages(tree, pagepool, nr, get_extent, &em_cached,
- &bio, 0, &bio_flags, READ);
+ &bio, 0, &bio_flags, READ, &prev_em_start);

if (em_cached)
free_extent_map(em_cached);
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index e33dff356460..b54e63038b96 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -5051,7 +5051,8 @@ void btrfs_evict_inode(struct inode *inode)
goto no_delete;
}
/* do we really want it for ->i_nlink > 0 and zero btrfs_root_refs? */
- btrfs_wait_ordered_range(inode, 0, (u64)-1);
+ if (!special_file(inode->i_mode))
+ btrfs_wait_ordered_range(inode, 0, (u64)-1);

btrfs_free_io_failure_record(inode, 0, (u64)-1);

diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index aa0dc2573374..afa09fce8151 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -444,6 +444,48 @@ find_domain_name(struct cifs_ses *ses, const struct nls_table *nls_cp)
return 0;
}

+/* Server has provided av pairs/target info in the type 2 challenge
+ * packet and we have plucked it and stored within smb session.
+ * We parse that blob here to find the server given timestamp
+ * as part of ntlmv2 authentication (or local current time as
+ * default in case of failure)
+ */
+static __le64
+find_timestamp(struct cifs_ses *ses)
+{
+ unsigned int attrsize;
+ unsigned int type;
+ unsigned int onesize = sizeof(struct ntlmssp2_name);
+ unsigned char *blobptr;
+ unsigned char *blobend;
+ struct ntlmssp2_name *attrptr;
+
+ if (!ses->auth_key.len || !ses->auth_key.response)
+ return 0;
+
+ blobptr = ses->auth_key.response;
+ blobend = blobptr + ses->auth_key.len;
+
+ while (blobptr + onesize < blobend) {
+ attrptr = (struct ntlmssp2_name *) blobptr;
+ type = le16_to_cpu(attrptr->type);
+ if (type == NTLMSSP_AV_EOL)
+ break;
+ blobptr += 2; /* advance attr type */
+ attrsize = le16_to_cpu(attrptr->length);
+ blobptr += 2; /* advance attr size */
+ if (blobptr + attrsize > blobend)
+ break;
+ if (type == NTLMSSP_AV_TIMESTAMP) {
+ if (attrsize == sizeof(u64))
+ return *((__le64 *)blobptr);
+ }
+ blobptr += attrsize; /* advance attr value */
+ }
+
+ return cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME));
+}
+
static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
const struct nls_table *nls_cp)
{
@@ -641,6 +683,7 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
struct ntlmv2_resp *ntlmv2;
char ntlmv2_hash[16];
unsigned char *tiblob = NULL; /* target info blob */
+ __le64 rsp_timestamp;

if (ses->server->negflavor == CIFS_NEGFLAVOR_EXTENDED) {
if (!ses->domainName) {
@@ -659,6 +702,12 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
}
}

+ /* Must be within 5 minutes of the server (or in range +/-2h
+ * in case of Mac OS X), so simply carry over server timestamp
+ * (as Windows 7 does)
+ */
+ rsp_timestamp = find_timestamp(ses);
+
baselen = CIFS_SESS_KEY_SIZE + sizeof(struct ntlmv2_resp);
tilen = ses->auth_key.len;
tiblob = ses->auth_key.response;
@@ -675,8 +724,8 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
(ses->auth_key.response + CIFS_SESS_KEY_SIZE);
ntlmv2->blob_signature = cpu_to_le32(0x00000101);
ntlmv2->reserved = 0;
- /* Must be within 5 minutes of the server */
- ntlmv2->time = cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME));
+ ntlmv2->time = rsp_timestamp;
+
get_random_bytes(&ntlmv2->client_chal, sizeof(ntlmv2->client_chal));
ntlmv2->reserved2 = 0;

diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index f621b44cb800..6b66dd5d1540 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -2034,7 +2034,6 @@ cifs_set_file_size(struct inode *inode, struct iattr *attrs,
struct tcon_link *tlink = NULL;
struct cifs_tcon *tcon = NULL;
struct TCP_Server_Info *server;
- struct cifs_io_parms io_parms;

/*
* To avoid spurious oplock breaks from server, in the case of
@@ -2056,18 +2055,6 @@ cifs_set_file_size(struct inode *inode, struct iattr *attrs,
rc = -ENOSYS;
cifsFileInfo_put(open_file);
cifs_dbg(FYI, "SetFSize for attrs rc = %d\n", rc);
- if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
- unsigned int bytes_written;
-
- io_parms.netfid = open_file->fid.netfid;
- io_parms.pid = open_file->pid;
- io_parms.tcon = tcon;
- io_parms.offset = 0;
- io_parms.length = attrs->ia_size;
- rc = CIFSSMBWrite(xid, &io_parms, &bytes_written,
- NULL, NULL, 1);
- cifs_dbg(FYI, "Wrt seteof rc %d\n", rc);
- }
} else
rc = -EINVAL;

@@ -2093,28 +2080,7 @@ cifs_set_file_size(struct inode *inode, struct iattr *attrs,
else
rc = -ENOSYS;
cifs_dbg(FYI, "SetEOF by path (setattrs) rc = %d\n", rc);
- if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
- __u16 netfid;
- int oplock = 0;

- rc = SMBLegacyOpen(xid, tcon, full_path, FILE_OPEN,
- GENERIC_WRITE, CREATE_NOT_DIR, &netfid,
- &oplock, NULL, cifs_sb->local_nls,
- cifs_remap(cifs_sb));
- if (rc == 0) {
- unsigned int bytes_written;
-
- io_parms.netfid = netfid;
- io_parms.pid = current->tgid;
- io_parms.tcon = tcon;
- io_parms.offset = 0;
- io_parms.length = attrs->ia_size;
- rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, NULL,
- NULL, 1);
- cifs_dbg(FYI, "wrt seteof rc %d\n", rc);
- CIFSSMBClose(xid, tcon, netfid);
- }
- }
if (tlink)
cifs_put_tlink(tlink);

diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index df91bcf56d67..18da19f4f811 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -50,9 +50,13 @@ change_conf(struct TCP_Server_Info *server)
break;
default:
server->echoes = true;
- server->oplocks = true;
+ if (enable_oplocks) {
+ server->oplocks = true;
+ server->oplock_credits = 1;
+ } else
+ server->oplocks = false;
+
server->echo_credits = 1;
- server->oplock_credits = 1;
}
server->credits -= server->echo_credits + server->oplock_credits;
return 0;
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index b8b4f08ee094..60dd83164ed6 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -46,6 +46,7 @@
#include "smb2status.h"
#include "smb2glob.h"
#include "cifspdu.h"
+#include "cifs_spnego.h"

/*
* The following table defines the expected "StructureSize" of SMB2 requests
@@ -486,19 +487,15 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses)
cifs_dbg(FYI, "missing security blob on negprot\n");

rc = cifs_enable_signing(server, ses->sign);
-#ifdef CONFIG_SMB2_ASN1 /* BB REMOVEME when updated asn1.c ready */
if (rc)
goto neg_exit;
- if (blob_length)
+ if (blob_length) {
rc = decode_negTokenInit(security_blob, blob_length, server);
- if (rc == 1)
- rc = 0;
- else if (rc == 0) {
- rc = -EIO;
- goto neg_exit;
+ if (rc == 1)
+ rc = 0;
+ else if (rc == 0)
+ rc = -EIO;
}
-#endif
-
neg_exit:
free_rsp_buf(resp_buftype, rsp);
return rc;
@@ -592,7 +589,8 @@ SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses,
__le32 phase = NtLmNegotiate; /* NTLMSSP, if needed, is multistage */
struct TCP_Server_Info *server = ses->server;
u16 blob_length = 0;
- char *security_blob;
+ struct key *spnego_key = NULL;
+ char *security_blob = NULL;
char *ntlmssp_blob = NULL;
bool use_spnego = false; /* else use raw ntlmssp */

@@ -620,7 +618,8 @@ SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses,
ses->ntlmssp->sesskey_per_smbsess = true;

/* FIXME: allow for other auth types besides NTLMSSP (e.g. krb5) */
- ses->sectype = RawNTLMSSP;
+ if (ses->sectype != Kerberos && ses->sectype != RawNTLMSSP)
+ ses->sectype = RawNTLMSSP;

ssetup_ntlmssp_authenticate:
if (phase == NtLmChallenge)
@@ -649,7 +648,48 @@ ssetup_ntlmssp_authenticate:
iov[0].iov_base = (char *)req;
/* 4 for rfc1002 length field and 1 for pad */
iov[0].iov_len = get_rfc1002_length(req) + 4 - 1;
- if (phase == NtLmNegotiate) {
+
+ if (ses->sectype == Kerberos) {
+#ifdef CONFIG_CIFS_UPCALL
+ struct cifs_spnego_msg *msg;
+
+ spnego_key = cifs_get_spnego_key(ses);
+ if (IS_ERR(spnego_key)) {
+ rc = PTR_ERR(spnego_key);
+ spnego_key = NULL;
+ goto ssetup_exit;
+ }
+
+ msg = spnego_key->payload.data;
+ /*
+ * check version field to make sure that cifs.upcall is
+ * sending us a response in an expected form
+ */
+ if (msg->version != CIFS_SPNEGO_UPCALL_VERSION) {
+ cifs_dbg(VFS,
+ "bad cifs.upcall version. Expected %d got %d",
+ CIFS_SPNEGO_UPCALL_VERSION, msg->version);
+ rc = -EKEYREJECTED;
+ goto ssetup_exit;
+ }
+ ses->auth_key.response = kmemdup(msg->data, msg->sesskey_len,
+ GFP_KERNEL);
+ if (!ses->auth_key.response) {
+ cifs_dbg(VFS,
+ "Kerberos can't allocate (%u bytes) memory",
+ msg->sesskey_len);
+ rc = -ENOMEM;
+ goto ssetup_exit;
+ }
+ ses->auth_key.len = msg->sesskey_len;
+ blob_length = msg->secblob_len;
+ iov[1].iov_base = msg->data + msg->sesskey_len;
+ iov[1].iov_len = blob_length;
+#else
+ rc = -EOPNOTSUPP;
+ goto ssetup_exit;
+#endif /* CONFIG_CIFS_UPCALL */
+ } else if (phase == NtLmNegotiate) { /* if not krb5 must be ntlmssp */
ntlmssp_blob = kmalloc(sizeof(struct _NEGOTIATE_MESSAGE),
GFP_KERNEL);
if (ntlmssp_blob == NULL) {
@@ -672,6 +712,8 @@ ssetup_ntlmssp_authenticate:
/* with raw NTLMSSP we don't encapsulate in SPNEGO */
security_blob = ntlmssp_blob;
}
+ iov[1].iov_base = security_blob;
+ iov[1].iov_len = blob_length;
} else if (phase == NtLmAuthenticate) {
req->hdr.SessionId = ses->Suid;
ntlmssp_blob = kzalloc(sizeof(struct _NEGOTIATE_MESSAGE) + 500,
@@ -699,6 +741,8 @@ ssetup_ntlmssp_authenticate:
} else {
security_blob = ntlmssp_blob;
}
+ iov[1].iov_base = security_blob;
+ iov[1].iov_len = blob_length;
} else {
cifs_dbg(VFS, "illegal ntlmssp phase\n");
rc = -EIO;
@@ -710,8 +754,6 @@ ssetup_ntlmssp_authenticate:
cpu_to_le16(sizeof(struct smb2_sess_setup_req) -
1 /* pad */ - 4 /* rfc1001 len */);
req->SecurityBufferLength = cpu_to_le16(blob_length);
- iov[1].iov_base = security_blob;
- iov[1].iov_len = blob_length;

inc_rfc1001_len(req, blob_length - 1 /* pad */);

@@ -722,6 +764,7 @@ ssetup_ntlmssp_authenticate:

kfree(security_blob);
rsp = (struct smb2_sess_setup_rsp *)iov[0].iov_base;
+ ses->Suid = rsp->hdr.SessionId;
if (resp_buftype != CIFS_NO_BUFFER &&
rsp->hdr.Status == STATUS_MORE_PROCESSING_REQUIRED) {
if (phase != NtLmNegotiate) {
@@ -739,7 +782,6 @@ ssetup_ntlmssp_authenticate:
/* NTLMSSP Negotiate sent now processing challenge (response) */
phase = NtLmChallenge; /* process ntlmssp challenge */
rc = 0; /* MORE_PROCESSING is not an error here but expected */
- ses->Suid = rsp->hdr.SessionId;
rc = decode_ntlmssp_challenge(rsp->Buffer,
le16_to_cpu(rsp->SecurityBufferLength), ses);
}
@@ -796,6 +838,10 @@ keygen_exit:
kfree(ses->auth_key.response);
ses->auth_key.response = NULL;
}
+ if (spnego_key) {
+ key_invalidate(spnego_key);
+ key_put(spnego_key);
+ }
kfree(ses->ntlmssp);

return rc;
diff --git a/fs/dax.c b/fs/dax.c
index a7f77e1fa18c..ef35a2014580 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -116,7 +116,8 @@ static ssize_t dax_io(struct inode *inode, struct iov_iter *iter,
unsigned len;
if (pos == max) {
unsigned blkbits = inode->i_blkbits;
- sector_t block = pos >> blkbits;
+ long page = pos >> PAGE_SHIFT;
+ sector_t block = page << (PAGE_SHIFT - blkbits);
unsigned first = pos - (block << blkbits);
long size;

diff --git a/fs/dcache.c b/fs/dcache.c
index 9b5fe503f6cb..e3b44ca75a1b 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -2926,6 +2926,13 @@ restart:

if (dentry == vfsmnt->mnt_root || IS_ROOT(dentry)) {
struct mount *parent = ACCESS_ONCE(mnt->mnt_parent);
+ /* Escaped? */
+ if (dentry != vfsmnt->mnt_root) {
+ bptr = *buffer;
+ blen = *buflen;
+ error = 3;
+ break;
+ }
/* Global root? */
if (mnt != parent) {
dentry = ACCESS_ONCE(mnt->mnt_mountpoint);
diff --git a/fs/namei.c b/fs/namei.c
index 1c2105ed20c5..36df4818a635 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -560,6 +560,24 @@ static int __nd_alloc_stack(struct nameidata *nd)
return 0;
}

+/**
+ * path_connected - Verify that a path->dentry is below path->mnt.mnt_root
+ * @path: nameidate to verify
+ *
+ * Rename can sometimes move a file or directory outside of a bind
+ * mount, path_connected allows those cases to be detected.
+ */
+static bool path_connected(const struct path *path)
+{
+ struct vfsmount *mnt = path->mnt;
+
+ /* Only bind mounts can have disconnected paths */
+ if (mnt->mnt_root == mnt->mnt_sb->s_root)
+ return true;
+
+ return is_subdir(path->dentry, mnt->mnt_root);
+}
+
static inline int nd_alloc_stack(struct nameidata *nd)
{
if (likely(nd->depth != EMBEDDED_LEVELS))
@@ -1296,6 +1314,8 @@ static int follow_dotdot_rcu(struct nameidata *nd)
return -ECHILD;
nd->path.dentry = parent;
nd->seq = seq;
+ if (unlikely(!path_connected(&nd->path)))
+ return -ENOENT;
break;
} else {
struct mount *mnt = real_mount(nd->path.mnt);
@@ -1396,7 +1416,7 @@ static void follow_mount(struct path *path)
}
}

-static void follow_dotdot(struct nameidata *nd)
+static int follow_dotdot(struct nameidata *nd)
{
if (!nd->root.mnt)
set_root(nd);
@@ -1412,6 +1432,8 @@ static void follow_dotdot(struct nameidata *nd)
/* rare case of legitimate dget_parent()... */
nd->path.dentry = dget_parent(nd->path.dentry);
dput(old);
+ if (unlikely(!path_connected(&nd->path)))
+ return -ENOENT;
break;
}
if (!follow_up(&nd->path))
@@ -1419,6 +1441,7 @@ static void follow_dotdot(struct nameidata *nd)
}
follow_mount(&nd->path);
nd->inode = nd->path.dentry->d_inode;
+ return 0;
}

/*
@@ -1535,8 +1558,6 @@ static int lookup_fast(struct nameidata *nd,
negative = d_is_negative(dentry);
if (read_seqcount_retry(&dentry->d_seq, seq))
return -ECHILD;
- if (negative)
- return -ENOENT;

/*
* This sequence count validates that the parent had no
@@ -1557,6 +1578,12 @@ static int lookup_fast(struct nameidata *nd,
goto unlazy;
}
}
+ /*
+ * Note: do negative dentry check after revalidation in
+ * case that drops it.
+ */
+ if (negative)
+ return -ENOENT;
path->mnt = mnt;
path->dentry = dentry;
if (likely(__follow_mount_rcu(nd, path, inode, seqp)))
@@ -1634,7 +1661,7 @@ static inline int handle_dots(struct nameidata *nd, int type)
if (nd->flags & LOOKUP_RCU) {
return follow_dotdot_rcu(nd);
} else
- follow_dotdot(nd);
+ return follow_dotdot(nd);
}
return 0;
}
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index 029d688a969f..c56886829708 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -113,7 +113,8 @@ out:
return status;
}

-static int nfs_delegation_claim_opens(struct inode *inode, const nfs4_stateid *stateid)
+static int nfs_delegation_claim_opens(struct inode *inode,
+ const nfs4_stateid *stateid, fmode_t type)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *ctx;
@@ -140,7 +141,7 @@ again:
/* Block nfs4_proc_unlck */
mutex_lock(&sp->so_delegreturn_mutex);
seq = raw_seqcount_begin(&sp->so_reclaim_seqcount);
- err = nfs4_open_delegation_recall(ctx, state, stateid);
+ err = nfs4_open_delegation_recall(ctx, state, stateid, type);
if (!err)
err = nfs_delegation_claim_locks(ctx, state, stateid);
if (!err && read_seqcount_retry(&sp->so_reclaim_seqcount, seq))
@@ -411,7 +412,8 @@ static int nfs_end_delegation_return(struct inode *inode, struct nfs_delegation
do {
if (test_bit(NFS_DELEGATION_REVOKED, &delegation->flags))
break;
- err = nfs_delegation_claim_opens(inode, &delegation->stateid);
+ err = nfs_delegation_claim_opens(inode, &delegation->stateid,
+ delegation->type);
if (!issync || err != -EAGAIN)
break;
/*
diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h
index e3c20a3ccc93..785c8525b576 100644
--- a/fs/nfs/delegation.h
+++ b/fs/nfs/delegation.h
@@ -54,7 +54,7 @@ void nfs_delegation_reap_unclaimed(struct nfs_client *clp);

/* NFSv4 delegation-related procedures */
int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync);
-int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid);
+int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid, fmode_t type);
int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid);
bool nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode, fmode_t flags);

diff --git a/fs/nfs/filelayout/filelayout.c b/fs/nfs/filelayout/filelayout.c
index b34f2e228601..02ec07973bc4 100644
--- a/fs/nfs/filelayout/filelayout.c
+++ b/fs/nfs/filelayout/filelayout.c
@@ -629,23 +629,18 @@ out_put:
goto out;
}

-static void filelayout_free_fh_array(struct nfs4_filelayout_segment *fl)
+static void _filelayout_free_lseg(struct nfs4_filelayout_segment *fl)
{
int i;

- for (i = 0; i < fl->num_fh; i++) {
- if (!fl->fh_array[i])
- break;
- kfree(fl->fh_array[i]);
+ if (fl->fh_array) {
+ for (i = 0; i < fl->num_fh; i++) {
+ if (!fl->fh_array[i])
+ break;
+ kfree(fl->fh_array[i]);
+ }
+ kfree(fl->fh_array);
}
- kfree(fl->fh_array);
- fl->fh_array = NULL;
-}
-
-static void
-_filelayout_free_lseg(struct nfs4_filelayout_segment *fl)
-{
- filelayout_free_fh_array(fl);
kfree(fl);
}

@@ -716,21 +711,21 @@ filelayout_decode_layout(struct pnfs_layout_hdr *flo,
/* Do we want to use a mempool here? */
fl->fh_array[i] = kmalloc(sizeof(struct nfs_fh), gfp_flags);
if (!fl->fh_array[i])
- goto out_err_free;
+ goto out_err;

p = xdr_inline_decode(&stream, 4);
if (unlikely(!p))
- goto out_err_free;
+ goto out_err;
fl->fh_array[i]->size = be32_to_cpup(p++);
if (sizeof(struct nfs_fh) < fl->fh_array[i]->size) {
printk(KERN_ERR "NFS: Too big fh %d received %d\n",
i, fl->fh_array[i]->size);
- goto out_err_free;
+ goto out_err;
}

p = xdr_inline_decode(&stream, fl->fh_array[i]->size);
if (unlikely(!p))
- goto out_err_free;
+ goto out_err;
memcpy(fl->fh_array[i]->data, p, fl->fh_array[i]->size);
dprintk("DEBUG: %s: fh len %d\n", __func__,
fl->fh_array[i]->size);
@@ -739,8 +734,6 @@ filelayout_decode_layout(struct pnfs_layout_hdr *flo,
__free_page(scratch);
return 0;

-out_err_free:
- filelayout_free_fh_array(fl);
out_err:
__free_page(scratch);
return -EIO;
diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c
index d731bbf974aa..0f020e4d8421 100644
--- a/fs/nfs/nfs42proc.c
+++ b/fs/nfs/nfs42proc.c
@@ -175,10 +175,12 @@ loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence)
{
struct nfs_server *server = NFS_SERVER(file_inode(filep));
struct nfs4_exception exception = { };
- int err;
+ loff_t err;

do {
err = _nfs42_proc_llseek(filep, offset, whence);
+ if (err >= 0)
+ break;
if (err == -ENOTSUPP)
return -EOPNOTSUPP;
err = nfs4_handle_exception(server, err, &exception);
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 73c8204ad463..d2daacad3568 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1127,6 +1127,21 @@ static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}

+static bool nfs4_mode_match_open_stateid(struct nfs4_state *state,
+ fmode_t fmode)
+{
+ switch(fmode & (FMODE_READ|FMODE_WRITE)) {
+ case FMODE_READ|FMODE_WRITE:
+ return state->n_rdwr != 0;
+ case FMODE_WRITE:
+ return state->n_wronly != 0;
+ case FMODE_READ:
+ return state->n_rdonly != 0;
+ }
+ WARN_ON_ONCE(1);
+ return false;
+}
+
static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
{
int ret = 0;
@@ -1561,17 +1576,13 @@ static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context
return opendata;
}

-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata,
+ fmode_t fmode)
{
struct nfs4_state *newstate;
int ret;

- if ((opendata->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR ||
- opendata->o_arg.claim == NFS4_OPEN_CLAIM_DELEG_CUR_FH) &&
- (opendata->o_arg.u.delegation_type & fmode) != fmode)
- /* This mode can't have been delegated, so we must have
- * a valid open_stateid to cover it - not need to reclaim.
- */
+ if (!nfs4_mode_match_open_stateid(opendata->state, fmode))
return 0;
opendata->o_arg.open_flags = 0;
opendata->o_arg.fmode = fmode;
@@ -1587,14 +1598,14 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmod
newstate = nfs4_opendata_to_nfs4_state(opendata);
if (IS_ERR(newstate))
return PTR_ERR(newstate);
+ if (newstate != opendata->state)
+ ret = -ESTALE;
nfs4_close_state(newstate, fmode);
- *res = newstate;
- return 0;
+ return ret;
}

static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state)
{
- struct nfs4_state *newstate;
int ret;

/* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
@@ -1605,27 +1616,15 @@ static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *
clear_bit(NFS_DELEGATED_STATE, &state->flags);
clear_bit(NFS_OPEN_STATE, &state->flags);
smp_rmb();
- if (state->n_rdwr != 0) {
- ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate);
- if (ret != 0)
- return ret;
- if (newstate != state)
- return -ESTALE;
- }
- if (state->n_wronly != 0) {
- ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate);
- if (ret != 0)
- return ret;
- if (newstate != state)
- return -ESTALE;
- }
- if (state->n_rdonly != 0) {
- ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate);
- if (ret != 0)
- return ret;
- if (newstate != state)
- return -ESTALE;
- }
+ ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE);
+ if (ret != 0)
+ return ret;
+ ret = nfs4_open_recover_helper(opendata, FMODE_WRITE);
+ if (ret != 0)
+ return ret;
+ ret = nfs4_open_recover_helper(opendata, FMODE_READ);
+ if (ret != 0)
+ return ret;
/*
* We may have performed cached opens for all three recoveries.
* Check if we need to update the current stateid.
@@ -1749,18 +1748,32 @@ static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct
return err;
}

-int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
+int nfs4_open_delegation_recall(struct nfs_open_context *ctx,
+ struct nfs4_state *state, const nfs4_stateid *stateid,
+ fmode_t type)
{
struct nfs_server *server = NFS_SERVER(state->inode);
struct nfs4_opendata *opendata;
- int err;
+ int err = 0;

opendata = nfs4_open_recoverdata_alloc(ctx, state,
NFS4_OPEN_CLAIM_DELEG_CUR_FH);
if (IS_ERR(opendata))
return PTR_ERR(opendata);
nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid);
- err = nfs4_open_recover(opendata, state);
+ clear_bit(NFS_DELEGATED_STATE, &state->flags);
+ switch (type & (FMODE_READ|FMODE_WRITE)) {
+ case FMODE_READ|FMODE_WRITE:
+ case FMODE_WRITE:
+ err = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE);
+ if (err)
+ break;
+ err = nfs4_open_recover_helper(opendata, FMODE_WRITE);
+ if (err)
+ break;
+ case FMODE_READ:
+ err = nfs4_open_recover_helper(opendata, FMODE_READ);
+ }
nfs4_opendata_put(opendata);
return nfs4_handle_delegation_recall_error(server, state, stateid, err);
}
diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index 7c5718ba625e..fe3ddd20ff89 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -508,7 +508,7 @@ size_t nfs_generic_pg_test(struct nfs_pageio_descriptor *desc,
* for it without upsetting the slab allocator.
*/
if (((mirror->pg_count + req->wb_bytes) >> PAGE_SHIFT) *
- sizeof(struct page) > PAGE_SIZE)
+ sizeof(struct page *) > PAGE_SIZE)
return 0;

return min(mirror->pg_bsize - mirror->pg_count, (size_t)req->wb_bytes);
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index ae0ff7a11b40..01b8cc8e8cfc 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -72,6 +72,9 @@ void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio)
{
struct nfs_pgio_mirror *mirror;

+ if (pgio->pg_ops && pgio->pg_ops->pg_cleanup)
+ pgio->pg_ops->pg_cleanup(pgio);
+
pgio->pg_ops = &nfs_pgio_rw_ops;

/* read path should never have more than one mirror */
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index fdee9270ca15..b45b465bc205 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -1223,7 +1223,7 @@ static int nfs_can_extend_write(struct file *file, struct page *page, struct ino
return 1;
if (!flctx || (list_empty_careful(&flctx->flc_flock) &&
list_empty_careful(&flctx->flc_posix)))
- return 0;
+ return 1;

/* Check to see if there are whole file write locks */
ret = 0;
@@ -1351,6 +1351,9 @@ void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio)
{
struct nfs_pgio_mirror *mirror;

+ if (pgio->pg_ops && pgio->pg_ops->pg_cleanup)
+ pgio->pg_ops->pg_cleanup(pgio);
+
pgio->pg_ops = &nfs_pgio_rw_ops;

nfs_pageio_stop_mirroring(pgio);
diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c
index fdf4b41d0609..482cfd34472d 100644
--- a/fs/ocfs2/dlm/dlmmaster.c
+++ b/fs/ocfs2/dlm/dlmmaster.c
@@ -1439,6 +1439,7 @@ int dlm_master_request_handler(struct o2net_msg *msg, u32 len, void *data,
int found, ret;
int set_maybe;
int dispatch_assert = 0;
+ int dispatched = 0;

if (!dlm_grab(dlm))
return DLM_MASTER_RESP_NO;
@@ -1658,15 +1659,18 @@ send_response:
mlog(ML_ERROR, "failed to dispatch assert master work\n");
response = DLM_MASTER_RESP_ERROR;
dlm_lockres_put(res);
- } else
+ } else {
+ dispatched = 1;
__dlm_lockres_grab_inflight_worker(dlm, res);
+ }
spin_unlock(&res->spinlock);
} else {
if (res)
dlm_lockres_put(res);
}

- dlm_put(dlm);
+ if (!dispatched)
+ dlm_put(dlm);
return response;
}

@@ -2090,7 +2094,6 @@ int dlm_dispatch_assert_master(struct dlm_ctxt *dlm,


/* queue up work for dlm_assert_master_worker */
- dlm_grab(dlm); /* get an extra ref for the work item */
dlm_init_work_item(dlm, item, dlm_assert_master_worker, NULL);
item->u.am.lockres = res; /* already have a ref */
/* can optionally ignore node numbers higher than this node */
diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
index ce12e0b1a31f..3d90ad7ff91f 100644
--- a/fs/ocfs2/dlm/dlmrecovery.c
+++ b/fs/ocfs2/dlm/dlmrecovery.c
@@ -1694,6 +1694,7 @@ int dlm_master_requery_handler(struct o2net_msg *msg, u32 len, void *data,
unsigned int hash;
int master = DLM_LOCK_RES_OWNER_UNKNOWN;
u32 flags = DLM_ASSERT_MASTER_REQUERY;
+ int dispatched = 0;

if (!dlm_grab(dlm)) {
/* since the domain has gone away on this
@@ -1719,8 +1720,10 @@ int dlm_master_requery_handler(struct o2net_msg *msg, u32 len, void *data,
dlm_put(dlm);
/* sender will take care of this and retry */
return ret;
- } else
+ } else {
+ dispatched = 1;
__dlm_lockres_grab_inflight_worker(dlm, res);
+ }
spin_unlock(&res->spinlock);
} else {
/* put.. incase we are not the master */
@@ -1730,7 +1733,8 @@ int dlm_master_requery_handler(struct o2net_msg *msg, u32 len, void *data,
}
spin_unlock(&dlm->spinlock);

- dlm_put(dlm);
+ if (!dispatched)
+ dlm_put(dlm);
return master;
}

diff --git a/fs/ubifs/xattr.c b/fs/ubifs/xattr.c
index 96f3448b6eb4..fd65b3f1923c 100644
--- a/fs/ubifs/xattr.c
+++ b/fs/ubifs/xattr.c
@@ -652,11 +652,8 @@ int ubifs_init_security(struct inode *dentry, struct inode *inode,
{
int err;

- mutex_lock(&inode->i_mutex);
err = security_inode_init_security(inode, dentry, qstr,
&init_xattrs, 0);
- mutex_unlock(&inode->i_mutex);
-
if (err) {
struct ubifs_info *c = dentry->i_sb->s_fs_info;
ubifs_err(c, "cannot initialize security for inode %lu, error %d",
diff --git a/include/asm-generic/preempt.h b/include/asm-generic/preempt.h
index d0a7a4753db2..0bec580a4885 100644
--- a/include/asm-generic/preempt.h
+++ b/include/asm-generic/preempt.h
@@ -71,9 +71,10 @@ static __always_inline bool __preempt_count_dec_and_test(void)
/*
* Returns true when we need to resched and can (barring IRQ state).
*/
-static __always_inline bool should_resched(void)
+static __always_inline bool should_resched(int preempt_offset)
{
- return unlikely(!preempt_count() && tif_need_resched());
+ return unlikely(preempt_count() == preempt_offset &&
+ tif_need_resched());
}

#ifdef CONFIG_PREEMPT
diff --git a/include/asm-generic/qspinlock.h b/include/asm-generic/qspinlock.h
index 83bfb87f5bf1..e2aadbc7151f 100644
--- a/include/asm-generic/qspinlock.h
+++ b/include/asm-generic/qspinlock.h
@@ -111,8 +111,8 @@ static inline void queued_spin_unlock_wait(struct qspinlock *lock)
cpu_relax();
}

-#ifndef virt_queued_spin_lock
-static __always_inline bool virt_queued_spin_lock(struct qspinlock *lock)
+#ifndef virt_spin_lock
+static __always_inline bool virt_spin_lock(struct qspinlock *lock)
{
return false;
}
diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h
index 93755a629299..430c876ad717 100644
--- a/include/linux/cgroup-defs.h
+++ b/include/linux/cgroup-defs.h
@@ -463,31 +463,8 @@ struct cgroup_subsys {
unsigned int depends_on;
};

-extern struct percpu_rw_semaphore cgroup_threadgroup_rwsem;
-
-/**
- * cgroup_threadgroup_change_begin - threadgroup exclusion for cgroups
- * @tsk: target task
- *
- * Called from threadgroup_change_begin() and allows cgroup operations to
- * synchronize against threadgroup changes using a percpu_rw_semaphore.
- */
-static inline void cgroup_threadgroup_change_begin(struct task_struct *tsk)
-{
- percpu_down_read(&cgroup_threadgroup_rwsem);
-}
-
-/**
- * cgroup_threadgroup_change_end - threadgroup exclusion for cgroups
- * @tsk: target task
- *
- * Called from threadgroup_change_end(). Counterpart of
- * cgroup_threadcgroup_change_begin().
- */
-static inline void cgroup_threadgroup_change_end(struct task_struct *tsk)
-{
- percpu_up_read(&cgroup_threadgroup_rwsem);
-}
+void cgroup_threadgroup_change_begin(struct task_struct *tsk);
+void cgroup_threadgroup_change_end(struct task_struct *tsk);

#else /* CONFIG_CGROUPS */

diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index e8493fee8160..bb9b075f0eb0 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -25,6 +25,13 @@
extern struct files_struct init_files;
extern struct fs_struct init_fs;

+#ifdef CONFIG_CGROUPS
+#define INIT_GROUP_RWSEM(sig) \
+ .group_rwsem = __RWSEM_INITIALIZER(sig.group_rwsem),
+#else
+#define INIT_GROUP_RWSEM(sig)
+#endif
+
#ifdef CONFIG_CPUSETS
#define INIT_CPUSET_SEQ(tsk) \
.mems_allowed_seq = SEQCNT_ZERO(tsk.mems_allowed_seq),
@@ -48,6 +55,7 @@ extern struct fs_struct init_fs;
}, \
.cred_guard_mutex = \
__MUTEX_INITIALIZER(sig.cred_guard_mutex), \
+ INIT_GROUP_RWSEM(sig) \
}

extern struct nsproxy init_nsproxy;
diff --git a/include/linux/mm.h b/include/linux/mm.h
index bf6f117fcf4d..2b05068f5878 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -916,6 +916,27 @@ static inline void set_page_links(struct page *page, enum zone_type zone,
#endif
}

+#ifdef CONFIG_MEMCG
+static inline struct mem_cgroup *page_memcg(struct page *page)
+{
+ return page->mem_cgroup;
+}
+
+static inline void set_page_memcg(struct page *page, struct mem_cgroup *memcg)
+{
+ page->mem_cgroup = memcg;
+}
+#else
+static inline struct mem_cgroup *page_memcg(struct page *page)
+{
+ return NULL;
+}
+
+static inline void set_page_memcg(struct page *page, struct mem_cgroup *memcg)
+{
+}
+#endif
+
/*
* Some inline functions in vmstat.h depend on page_zone()
*/
diff --git a/include/linux/preempt.h b/include/linux/preempt.h
index 84991f185173..bea8dd8ff5e0 100644
--- a/include/linux/preempt.h
+++ b/include/linux/preempt.h
@@ -84,13 +84,21 @@
*/
#define in_nmi() (preempt_count() & NMI_MASK)

+/*
+ * The preempt_count offset after preempt_disable();
+ */
#if defined(CONFIG_PREEMPT_COUNT)
-# define PREEMPT_DISABLE_OFFSET 1
+# define PREEMPT_DISABLE_OFFSET PREEMPT_OFFSET
#else
-# define PREEMPT_DISABLE_OFFSET 0
+# define PREEMPT_DISABLE_OFFSET 0
#endif

/*
+ * The preempt_count offset after spin_lock()
+ */
+#define PREEMPT_LOCK_OFFSET PREEMPT_DISABLE_OFFSET
+
+/*
* The preempt_count offset needed for things like:
*
* spin_lock_bh()
@@ -103,7 +111,7 @@
*
* Work as expected.
*/
-#define SOFTIRQ_LOCK_OFFSET (SOFTIRQ_DISABLE_OFFSET + PREEMPT_DISABLE_OFFSET)
+#define SOFTIRQ_LOCK_OFFSET (SOFTIRQ_DISABLE_OFFSET + PREEMPT_LOCK_OFFSET)

/*
* Are we running in atomic context? WARNING: this macro cannot
@@ -124,7 +132,8 @@
#if defined(CONFIG_DEBUG_PREEMPT) || defined(CONFIG_PREEMPT_TRACER)
extern void preempt_count_add(int val);
extern void preempt_count_sub(int val);
-#define preempt_count_dec_and_test() ({ preempt_count_sub(1); should_resched(); })
+#define preempt_count_dec_and_test() \
+ ({ preempt_count_sub(1); should_resched(0); })
#else
#define preempt_count_add(val) __preempt_count_add(val)
#define preempt_count_sub(val) __preempt_count_sub(val)
@@ -184,7 +193,7 @@ do { \

#define preempt_check_resched() \
do { \
- if (should_resched()) \
+ if (should_resched(0)) \
__preempt_schedule(); \
} while (0)

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 04b5ada460b4..bfca8aa215d1 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -754,6 +754,18 @@ struct signal_struct {
unsigned audit_tty_log_passwd;
struct tty_audit_buf *tty_audit_buf;
#endif
+#ifdef CONFIG_CGROUPS
+ /*
+ * group_rwsem prevents new tasks from entering the threadgroup and
+ * member tasks from exiting,a more specifically, setting of
+ * PF_EXITING. fork and exit paths are protected with this rwsem
+ * using threadgroup_change_begin/end(). Users which require
+ * threadgroup to remain stable should use threadgroup_[un]lock()
+ * which also takes care of exec path. Currently, cgroup is the
+ * only user.
+ */
+ struct rw_semaphore group_rwsem;
+#endif

oom_flags_t oom_flags;
short oom_score_adj; /* OOM kill score adjustment */
@@ -2897,12 +2909,6 @@ extern int _cond_resched(void);

extern int __cond_resched_lock(spinlock_t *lock);

-#ifdef CONFIG_PREEMPT_COUNT
-#define PREEMPT_LOCK_OFFSET PREEMPT_OFFSET
-#else
-#define PREEMPT_LOCK_OFFSET 0
-#endif
-
#define cond_resched_lock(lock) ({ \
___might_sleep(__FILE__, __LINE__, PREEMPT_LOCK_OFFSET);\
__cond_resched_lock(lock); \
diff --git a/include/linux/security.h b/include/linux/security.h
index 79d85ddf8093..2f4c1f7aa7db 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -946,7 +946,7 @@ static inline int security_task_prctl(int option, unsigned long arg2,
unsigned long arg4,
unsigned long arg5)
{
- return cap_task_prctl(option, arg2, arg3, arg3, arg5);
+ return cap_task_prctl(option, arg2, arg3, arg4, arg5);
}

static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
diff --git a/include/net/netfilter/br_netfilter.h b/include/net/netfilter/br_netfilter.h
index bab824bde92c..d4c6b5f30acd 100644
--- a/include/net/netfilter/br_netfilter.h
+++ b/include/net/netfilter/br_netfilter.h
@@ -59,7 +59,7 @@ static inline unsigned int
br_nf_pre_routing_ipv6(const struct nf_hook_ops *ops, struct sk_buff *skb,
const struct nf_hook_state *state)
{
- return NF_DROP;
+ return NF_ACCEPT;
}
#endif

diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h
index 37cd3911d5c5..4023c4ce260f 100644
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -292,6 +292,7 @@ extern unsigned int nf_conntrack_hash_rnd;
void init_nf_conntrack_hash_rnd(void);

struct nf_conn *nf_ct_tmpl_alloc(struct net *net, u16 zone, gfp_t flags);
+void nf_ct_tmpl_free(struct nf_conn *tmpl);

#define NF_CT_STAT_INC(net, count) __this_cpu_inc((net)->ct.stat->count)
#define NF_CT_STAT_INC_ATOMIC(net, count) this_cpu_inc((net)->ct.stat->count)
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index 2a246680a6c3..aa8bee72c9d3 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -125,7 +125,7 @@ static inline enum nft_data_types nft_dreg_to_type(enum nft_registers reg)

static inline enum nft_registers nft_type_to_reg(enum nft_data_types type)
{
- return type == NFT_DATA_VERDICT ? NFT_REG_VERDICT : NFT_REG_1;
+ return type == NFT_DATA_VERDICT ? NFT_REG_VERDICT : NFT_REG_1 * NFT_REG_SIZE / NFT_REG32_SIZE;
}

unsigned int nft_parse_register(const struct nlattr *attr);
diff --git a/include/target/iscsi/iscsi_target_core.h b/include/target/iscsi/iscsi_target_core.h
index 0aedbb2c10e0..7e7f8875ac32 100644
--- a/include/target/iscsi/iscsi_target_core.h
+++ b/include/target/iscsi/iscsi_target_core.h
@@ -776,7 +776,6 @@ struct iscsi_np {
enum iscsi_timer_flags_table np_login_timer_flags;
u32 np_exports;
enum np_flags_table np_flags;
- unsigned char np_ip[IPV6_ADDRESS_SPACE];
u16 np_port;
spinlock_t np_thread_lock;
struct completion np_restart_comp;
diff --git a/include/xen/interface/sched.h b/include/xen/interface/sched.h
index 9ce083960a25..f18490985fc8 100644
--- a/include/xen/interface/sched.h
+++ b/include/xen/interface/sched.h
@@ -107,5 +107,13 @@ struct sched_watchdog {
#define SHUTDOWN_suspend 2 /* Clean up, save suspend info, kill. */
#define SHUTDOWN_crash 3 /* Tell controller we've crashed. */
#define SHUTDOWN_watchdog 4 /* Restart because watchdog time expired. */
+/*
+ * Domain asked to perform 'soft reset' for it. The expected behavior is to
+ * reset internal Xen state for the domain returning it to the point where it
+ * was created but leaving the domain's memory contents and vCPU contexts
+ * intact. This will allow the domain to start over and set up all Xen specific
+ * interfaces again.
+ */
+#define SHUTDOWN_soft_reset 5

#endif /* __XEN_PUBLIC_SCHED_H__ */
diff --git a/ipc/msg.c b/ipc/msg.c
index 66c4f567eb73..1471db9a7e61 100644
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -137,13 +137,6 @@ static int newque(struct ipc_namespace *ns, struct ipc_params *params)
return retval;
}

- /* ipc_addid() locks msq upon success. */
- id = ipc_addid(&msg_ids(ns), &msq->q_perm, ns->msg_ctlmni);
- if (id < 0) {
- ipc_rcu_putref(msq, msg_rcu_free);
- return id;
- }
-
msq->q_stime = msq->q_rtime = 0;
msq->q_ctime = get_seconds();
msq->q_cbytes = msq->q_qnum = 0;
@@ -153,6 +146,13 @@ static int newque(struct ipc_namespace *ns, struct ipc_params *params)
INIT_LIST_HEAD(&msq->q_receivers);
INIT_LIST_HEAD(&msq->q_senders);

+ /* ipc_addid() locks msq upon success. */
+ id = ipc_addid(&msg_ids(ns), &msq->q_perm, ns->msg_ctlmni);
+ if (id < 0) {
+ ipc_rcu_putref(msq, msg_rcu_free);
+ return id;
+ }
+
ipc_unlock_object(&msq->q_perm);
rcu_read_unlock();

diff --git a/ipc/shm.c b/ipc/shm.c
index 4aef24d91b63..0e61fd430547 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -551,12 +551,6 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params)
if (IS_ERR(file))
goto no_file;

- id = ipc_addid(&shm_ids(ns), &shp->shm_perm, ns->shm_ctlmni);
- if (id < 0) {
- error = id;
- goto no_id;
- }
-
shp->shm_cprid = task_tgid_vnr(current);
shp->shm_lprid = 0;
shp->shm_atim = shp->shm_dtim = 0;
@@ -565,6 +559,13 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params)
shp->shm_nattch = 0;
shp->shm_file = file;
shp->shm_creator = current;
+
+ id = ipc_addid(&shm_ids(ns), &shp->shm_perm, ns->shm_ctlmni);
+ if (id < 0) {
+ error = id;
+ goto no_id;
+ }
+
list_add(&shp->shm_clist, &current->sysvshm.shm_clist);

/*
diff --git a/ipc/util.c b/ipc/util.c
index be4230020a1f..0f401d94b7c6 100644
--- a/ipc/util.c
+++ b/ipc/util.c
@@ -237,6 +237,10 @@ int ipc_addid(struct ipc_ids *ids, struct kern_ipc_perm *new, int size)
rcu_read_lock();
spin_lock(&new->lock);

+ current_euid_egid(&euid, &egid);
+ new->cuid = new->uid = euid;
+ new->gid = new->cgid = egid;
+
id = idr_alloc(&ids->ipcs_idr, new,
(next_id < 0) ? 0 : ipcid_to_idx(next_id), 0,
GFP_NOWAIT);
@@ -249,10 +253,6 @@ int ipc_addid(struct ipc_ids *ids, struct kern_ipc_perm *new, int size)

ids->in_use++;

- current_euid_egid(&euid, &egid);
- new->cuid = new->uid = euid;
- new->gid = new->cgid = egid;
-
if (next_id < 0) {
new->seq = ids->seq++;
if (ids->seq > IPCID_SEQ_MAX)
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index c6c4240e7d28..fe6f855de3d1 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -46,7 +46,6 @@
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/rwsem.h>
-#include <linux/percpu-rwsem.h>
#include <linux/string.h>
#include <linux/sort.h>
#include <linux/kmod.h>
@@ -104,8 +103,6 @@ static DEFINE_SPINLOCK(cgroup_idr_lock);
*/
static DEFINE_SPINLOCK(release_agent_path_lock);

-struct percpu_rw_semaphore cgroup_threadgroup_rwsem;
-
#define cgroup_assert_mutex_or_rcu_locked() \
rcu_lockdep_assert(rcu_read_lock_held() || \
lockdep_is_held(&cgroup_mutex), \
@@ -870,6 +867,48 @@ static struct css_set *find_css_set(struct css_set *old_cset,
return cset;
}

+void cgroup_threadgroup_change_begin(struct task_struct *tsk)
+{
+ down_read(&tsk->signal->group_rwsem);
+}
+
+void cgroup_threadgroup_change_end(struct task_struct *tsk)
+{
+ up_read(&tsk->signal->group_rwsem);
+}
+
+/**
+ * threadgroup_lock - lock threadgroup
+ * @tsk: member task of the threadgroup to lock
+ *
+ * Lock the threadgroup @tsk belongs to. No new task is allowed to enter
+ * and member tasks aren't allowed to exit (as indicated by PF_EXITING) or
+ * change ->group_leader/pid. This is useful for cases where the threadgroup
+ * needs to stay stable across blockable operations.
+ *
+ * fork and exit explicitly call threadgroup_change_{begin|end}() for
+ * synchronization. While held, no new task will be added to threadgroup
+ * and no existing live task will have its PF_EXITING set.
+ *
+ * de_thread() does threadgroup_change_{begin|end}() when a non-leader
+ * sub-thread becomes a new leader.
+ */
+static void threadgroup_lock(struct task_struct *tsk)
+{
+ down_write(&tsk->signal->group_rwsem);
+}
+
+/**
+ * threadgroup_unlock - unlock threadgroup
+ * @tsk: member task of the threadgroup to unlock
+ *
+ * Reverse threadgroup_lock().
+ */
+static inline void threadgroup_unlock(struct task_struct *tsk)
+{
+ up_write(&tsk->signal->group_rwsem);
+}
+
static struct cgroup_root *cgroup_root_from_kf(struct kernfs_root *kf_root)
{
struct cgroup *root_cgrp = kf_root->kn->priv;
@@ -2066,9 +2105,9 @@ static void cgroup_task_migrate(struct cgroup *old_cgrp,
lockdep_assert_held(&css_set_rwsem);

/*
- * We are synchronized through cgroup_threadgroup_rwsem against
- * PF_EXITING setting such that we can't race against cgroup_exit()
- * changing the css_set to init_css_set and dropping the old one.
+ * We are synchronized through threadgroup_lock() against PF_EXITING
+ * setting such that we can't race against cgroup_exit() changing the
+ * css_set to init_css_set and dropping the old one.
*/
WARN_ON_ONCE(tsk->flags & PF_EXITING);
old_cset = task_css_set(tsk);
@@ -2125,11 +2164,10 @@ static void cgroup_migrate_finish(struct list_head *preloaded_csets)
* @src_cset and add it to @preloaded_csets, which should later be cleaned
* up by cgroup_migrate_finish().
*
- * This function may be called without holding cgroup_threadgroup_rwsem
- * even if the target is a process. Threads may be created and destroyed
- * but as long as cgroup_mutex is not dropped, no new css_set can be put
- * into play and the preloaded css_sets are guaranteed to cover all
- * migrations.
+ * This function may be called without holding threadgroup_lock even if the
+ * target is a process. Threads may be created and destroyed but as long
+ * as cgroup_mutex is not dropped, no new css_set can be put into play and
+ * the preloaded css_sets are guaranteed to cover all migrations.
*/
static void cgroup_migrate_add_src(struct css_set *src_cset,
struct cgroup *dst_cgrp,
@@ -2232,7 +2270,7 @@ err:
* @threadgroup: whether @leader points to the whole process or a single task
*
* Migrate a process or task denoted by @leader to @cgrp. If migrating a
- * process, the caller must be holding cgroup_threadgroup_rwsem. The
+ * process, the caller must be holding threadgroup_lock of @leader. The
* caller is also responsible for invoking cgroup_migrate_add_src() and
* cgroup_migrate_prepare_dst() on the targets before invoking this
* function and following up with cgroup_migrate_finish().
@@ -2360,7 +2398,7 @@ out_release_tset:
* @leader: the task or the leader of the threadgroup to be attached
* @threadgroup: attach the whole threadgroup?
*
- * Call holding cgroup_mutex and cgroup_threadgroup_rwsem.
+ * Call holding cgroup_mutex and threadgroup_lock of @leader.
*/
static int cgroup_attach_task(struct cgroup *dst_cgrp,
struct task_struct *leader, bool threadgroup)
@@ -2452,13 +2490,14 @@ static ssize_t __cgroup_procs_write(struct kernfs_open_file *of, char *buf,
if (!cgrp)
return -ENODEV;

- percpu_down_write(&cgroup_threadgroup_rwsem);
+retry_find_task:
rcu_read_lock();
if (pid) {
tsk = find_task_by_vpid(pid);
if (!tsk) {
+ rcu_read_unlock();
ret = -ESRCH;
- goto out_unlock_rcu;
+ goto out_unlock_cgroup;
}
} else {
tsk = current;
@@ -2474,23 +2513,37 @@ static ssize_t __cgroup_procs_write(struct kernfs_open_file *of, char *buf,
*/
if (tsk == kthreadd_task || (tsk->flags & PF_NO_SETAFFINITY)) {
ret = -EINVAL;
- goto out_unlock_rcu;
+ rcu_read_unlock();
+ goto out_unlock_cgroup;
}

get_task_struct(tsk);
rcu_read_unlock();

+ threadgroup_lock(tsk);
+ if (threadgroup) {
+ if (!thread_group_leader(tsk)) {
+ /*
+ * a race with de_thread from another thread's exec()
+ * may strip us of our leadership, if this happens,
+ * there is no choice but to throw this task away and
+ * try again; this is
+ * "double-double-toil-and-trouble-check locking".
+ */
+ threadgroup_unlock(tsk);
+ put_task_struct(tsk);
+ goto retry_find_task;
+ }
+ }
+
ret = cgroup_procs_write_permission(tsk, cgrp, of);
if (!ret)
ret = cgroup_attach_task(cgrp, tsk, threadgroup);

- put_task_struct(tsk);
- goto out_unlock_threadgroup;
+ threadgroup_unlock(tsk);

-out_unlock_rcu:
- rcu_read_unlock();
-out_unlock_threadgroup:
- percpu_up_write(&cgroup_threadgroup_rwsem);
+ put_task_struct(tsk);
+out_unlock_cgroup:
cgroup_kn_unlock(of->kn);
return ret ?: nbytes;
}
@@ -2635,8 +2688,6 @@ static int cgroup_update_dfl_csses(struct cgroup *cgrp)

lockdep_assert_held(&cgroup_mutex);

- percpu_down_write(&cgroup_threadgroup_rwsem);
-
/* look up all csses currently attached to @cgrp's subtree */
down_read(&css_set_rwsem);
css_for_each_descendant_pre(css, cgroup_css(cgrp, NULL)) {
@@ -2692,8 +2743,17 @@ static int cgroup_update_dfl_csses(struct cgroup *cgrp)
goto out_finish;
last_task = task;

+ threadgroup_lock(task);
+ /* raced against de_thread() from another thread? */
+ if (!thread_group_leader(task)) {
+ threadgroup_unlock(task);
+ put_task_struct(task);
+ continue;
+ }
+
ret = cgroup_migrate(src_cset->dfl_cgrp, task, true);

+ threadgroup_unlock(task);
put_task_struct(task);

if (WARN(ret, "cgroup: failed to update controllers for the default hierarchy (%d), further operations may crash or hang\n", ret))
@@ -2703,7 +2763,6 @@ static int cgroup_update_dfl_csses(struct cgroup *cgrp)

out_finish:
cgroup_migrate_finish(&preloaded_csets);
- percpu_up_write(&cgroup_threadgroup_rwsem);
return ret;
}

@@ -5013,7 +5072,6 @@ int __init cgroup_init(void)
unsigned long key;
int ssid, err;

- BUG_ON(percpu_init_rwsem(&cgroup_threadgroup_rwsem));
BUG_ON(cgroup_init_cftypes(NULL, cgroup_dfl_base_files));
BUG_ON(cgroup_init_cftypes(NULL, cgroup_legacy_base_files));

diff --git a/kernel/fork.c b/kernel/fork.c
index 26a70dc7a915..e769c8c86f86 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1146,6 +1146,10 @@ static int copy_signal(unsigned long clone_flags, struct task_struct *tsk)
tty_audit_fork(sig);
sched_autogroup_fork(sig);

+#ifdef CONFIG_CGROUPS
+ init_rwsem(&sig->group_rwsem);
+#endif
+
sig->oom_score_adj = current->signal->oom_score_adj;
sig->oom_score_adj_min = current->signal->oom_score_adj_min;

diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index 0e97c142ce40..4e6267a34440 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -12,6 +12,7 @@
#include <linux/seq_file.h>
#include <linux/interrupt.h>
#include <linux/kernel_stat.h>
+#include <linux/mutex.h>

#include "internals.h"

@@ -323,18 +324,29 @@ void register_handler_proc(unsigned int irq, struct irqaction *action)

void register_irq_proc(unsigned int irq, struct irq_desc *desc)
{
+ static DEFINE_MUTEX(register_lock);
char name [MAX_NAMELEN];

- if (!root_irq_dir || (desc->irq_data.chip == &no_irq_chip) || desc->dir)
+ if (!root_irq_dir || (desc->irq_data.chip == &no_irq_chip))
return;

+ /*
+ * irq directories are registered only when a handler is
+ * added, not when the descriptor is created, so multiple
+ * tasks might try to register at the same time.
+ */
+ mutex_lock(&register_lock);
+
+ if (desc->dir)
+ goto out_unlock;
+
memset(name, 0, MAX_NAMELEN);
sprintf(name, "%d", irq);

/* create /proc/irq/1234 */
desc->dir = proc_mkdir(name, root_irq_dir);
if (!desc->dir)
- return;
+ goto out_unlock;

#ifdef CONFIG_SMP
/* create /proc/irq/<irq>/smp_affinity */
@@ -355,6 +367,9 @@ void register_irq_proc(unsigned int irq, struct irq_desc *desc)

proc_create_data("spurious", 0444, desc->dir,
&irq_spurious_proc_fops, (void *)(long)irq);
+
+out_unlock:
+ mutex_unlock(&register_lock);
}

void unregister_irq_proc(unsigned int irq, struct irq_desc *desc)
diff --git a/kernel/locking/qspinlock.c b/kernel/locking/qspinlock.c
index 38c49202d532..8ed01611ae73 100644
--- a/kernel/locking/qspinlock.c
+++ b/kernel/locking/qspinlock.c
@@ -289,7 +289,7 @@ void queued_spin_lock_slowpath(struct qspinlock *lock, u32 val)
if (pv_enabled())
goto queue;

- if (virt_queued_spin_lock(lock))
+ if (virt_spin_lock(lock))
return;

/*
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index e9673433cc01..6776631676e0 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2461,11 +2461,11 @@ static struct rq *finish_task_switch(struct task_struct *prev)
* If a task dies, then it sets TASK_DEAD in tsk->state and calls
* schedule one last time. The schedule call will never return, and
* the scheduled task must drop that reference.
- * The test for TASK_DEAD must occur while the runqueue locks are
- * still held, otherwise prev could be scheduled on another cpu, die
- * there before we look at prev->state, and then the reference would
- * be dropped twice.
- * Manfred Spraul <manfred@colorfullife.com>
+ *
+ * We must observe prev->state before clearing prev->on_cpu (in
+ * finish_lock_switch), otherwise a concurrent wakeup can get prev
+ * running on another CPU and we could rave with its RUNNING -> DEAD
+ * transition, resulting in a double drop.
*/
prev_state = prev->state;
vtime_task_switch(prev);
@@ -2614,13 +2614,20 @@ unsigned long nr_running(void)

/*
* Check if only the current task is running on the cpu.
+ *
+ * Caution: this function does not check that the caller has disabled
+ * preemption, thus the result might have a time-of-check-to-time-of-use
+ * race. The caller is responsible to use it correctly, for example:
+ *
+ * - from a non-preemptable section (of course)
+ *
+ * - from a thread that is bound to a single CPU
+ *
+ * - in a loop with very short iterations (e.g. a polling loop)
*/
bool single_task_running(void)
{
- if (cpu_rq(smp_processor_id())->nr_running == 1)
- return true;
- else
- return false;
+ return raw_rq()->nr_running == 1;
}
EXPORT_SYMBOL(single_task_running);

@@ -4492,7 +4499,7 @@ SYSCALL_DEFINE0(sched_yield)

int __sched _cond_resched(void)
{
- if (should_resched()) {
+ if (should_resched(0)) {
preempt_schedule_common();
return 1;
}
@@ -4510,7 +4517,7 @@ EXPORT_SYMBOL(_cond_resched);
*/
int __cond_resched_lock(spinlock_t *lock)
{
- int resched = should_resched();
+ int resched = should_resched(PREEMPT_LOCK_OFFSET);
int ret = 0;

lockdep_assert_held(lock);
@@ -4532,7 +4539,7 @@ int __sched __cond_resched_softirq(void)
{
BUG_ON(!in_softirq());

- if (should_resched()) {
+ if (should_resched(SOFTIRQ_DISABLE_OFFSET)) {
local_bh_enable();
preempt_schedule_common();
local_bh_disable();
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 84d48790bb6d..08ab96b366bf 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -1091,9 +1091,10 @@ static inline void finish_lock_switch(struct rq *rq, struct task_struct *prev)
* After ->on_cpu is cleared, the task can be moved to a different CPU.
* We must ensure this doesn't happen until the switch is completely
* finished.
+ *
+ * Pairs with the control dependency and rmb in try_to_wake_up().
*/
- smp_wmb();
- prev->on_cpu = 0;
+ smp_store_release(&prev->on_cpu, 0);
#endif
#ifdef CONFIG_DEBUG_SPINLOCK
/* this is a valid case when another task releases the spinlock */
diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index 841b72f720e8..3a38775b50c2 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -217,7 +217,7 @@ static void clocksource_watchdog(unsigned long data)
continue;

/* Check the deviation from the watchdog clocksource. */
- if ((abs(cs_nsec - wd_nsec) > WATCHDOG_THRESHOLD)) {
+ if (abs64(cs_nsec - wd_nsec) > WATCHDOG_THRESHOLD) {
pr_warn("timekeeping watchdog: Marking clocksource '%s' as unstable because the skew is too large:\n",
cs->name);
pr_warn(" '%s' wd_now: %llx wd_last: %llx mask: %llx\n",
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index bca3667a2de1..a20d4110e871 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -1607,7 +1607,7 @@ static __always_inline void timekeeping_freqadjust(struct timekeeper *tk,
negative = (tick_error < 0);

/* Sort out the magnitude of the correction */
- tick_error = abs(tick_error);
+ tick_error = abs64(tick_error);
for (adj = 0; tick_error > interval; adj++)
tick_error >>= 1;

diff --git a/lib/iommu-common.c b/lib/iommu-common.c
index ff19f66d3f7f..b1c93e94ca7a 100644
--- a/lib/iommu-common.c
+++ b/lib/iommu-common.c
@@ -21,8 +21,7 @@ static DEFINE_PER_CPU(unsigned int, iommu_hash_common);

static inline bool need_flush(struct iommu_map_table *iommu)
{
- return (iommu->lazy_flush != NULL &&
- (iommu->flags & IOMMU_NEED_FLUSH) != 0);
+ return ((iommu->flags & IOMMU_NEED_FLUSH) != 0);
}

static inline void set_flush(struct iommu_map_table *iommu)
@@ -211,7 +210,8 @@ unsigned long iommu_tbl_range_alloc(struct device *dev,
goto bail;
}
}
- if (n < pool->hint || need_flush(iommu)) {
+ if (iommu->lazy_flush &&
+ (n < pool->hint || need_flush(iommu))) {
clear_flush(iommu);
iommu->lazy_flush(iommu);
}
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index a8c3087089d8..62c1ec5a9d31 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2974,6 +2974,14 @@ static void unmap_ref_private(struct mm_struct *mm, struct vm_area_struct *vma,
continue;

/*
+ * Shared VMAs have their own reserves and do not affect
+ * MAP_PRIVATE accounting but it is possible that a shared
+ * VMA is using the same page so check and skip such VMAs.
+ */
+ if (iter_vma->vm_flags & VM_MAYSHARE)
+ continue;
+
+ /*
* Unmap the page from other VMAs without their own reserves.
* They get marked to be SIGKILLed if they fault in these
* areas. This is because a future no-page fault on this VMA
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index acb93c554f6e..237d4686482d 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -806,12 +806,14 @@ mem_cgroup_largest_soft_limit_node(struct mem_cgroup_tree_per_zone *mctz)
}

/*
+ * Return page count for single (non recursive) @memcg.
+ *
* Implementation Note: reading percpu statistics for memcg.
*
* Both of vmstat[] and percpu_counter has threshold and do periodic
* synchronization to implement "quick" read. There are trade-off between
* reading cost and precision of value. Then, we may have a chance to implement
- * a periodic synchronizion of counter in memcg's counter.
+ * a periodic synchronization of counter in memcg's counter.
*
* But this _read() function is used for user interface now. The user accounts
* memory usage by memory cgroup and he _always_ requires exact value because
@@ -821,17 +823,24 @@ mem_cgroup_largest_soft_limit_node(struct mem_cgroup_tree_per_zone *mctz)
*
* If there are kernel internal actions which can make use of some not-exact
* value, and reading all cpu value can be performance bottleneck in some
- * common workload, threashold and synchonization as vmstat[] should be
+ * common workload, threshold and synchronization as vmstat[] should be
* implemented.
*/
-static long mem_cgroup_read_stat(struct mem_cgroup *memcg,
- enum mem_cgroup_stat_index idx)
+static unsigned long
+mem_cgroup_read_stat(struct mem_cgroup *memcg, enum mem_cgroup_stat_index idx)
{
long val = 0;
int cpu;

+ /* Per-cpu values can be negative, use a signed accumulator */
for_each_possible_cpu(cpu)
val += per_cpu(memcg->stat->count[idx], cpu);
+ /*
+ * Summing races with updates, so val may be negative. Avoid exposing
+ * transient negative values.
+ */
+ if (val < 0)
+ val = 0;
return val;
}

@@ -1498,7 +1507,7 @@ void mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p)
for (i = 0; i < MEM_CGROUP_STAT_NSTATS; i++) {
if (i == MEM_CGROUP_STAT_SWAP && !do_swap_account)
continue;
- pr_cont(" %s:%ldKB", mem_cgroup_stat_names[i],
+ pr_cont(" %s:%luKB", mem_cgroup_stat_names[i],
K(mem_cgroup_read_stat(iter, i)));
}

@@ -3119,14 +3128,11 @@ static unsigned long tree_stat(struct mem_cgroup *memcg,
enum mem_cgroup_stat_index idx)
{
struct mem_cgroup *iter;
- long val = 0;
+ unsigned long val = 0;

- /* Per-cpu values can be negative, use a signed accumulator */
for_each_mem_cgroup_tree(iter, memcg)
val += mem_cgroup_read_stat(iter, idx);

- if (val < 0) /* race ? */
- val = 0;
return val;
}

@@ -3469,7 +3475,7 @@ static int memcg_stat_show(struct seq_file *m, void *v)
for (i = 0; i < MEM_CGROUP_STAT_NSTATS; i++) {
if (i == MEM_CGROUP_STAT_SWAP && !do_swap_account)
continue;
- seq_printf(m, "%s %ld\n", mem_cgroup_stat_names[i],
+ seq_printf(m, "%s %lu\n", mem_cgroup_stat_names[i],
mem_cgroup_read_stat(memcg, i) * PAGE_SIZE);
}

@@ -3494,13 +3500,13 @@ static int memcg_stat_show(struct seq_file *m, void *v)
(u64)memsw * PAGE_SIZE);

for (i = 0; i < MEM_CGROUP_STAT_NSTATS; i++) {
- long long val = 0;
+ unsigned long long val = 0;

if (i == MEM_CGROUP_STAT_SWAP && !do_swap_account)
continue;
for_each_mem_cgroup_tree(mi, memcg)
val += mem_cgroup_read_stat(mi, i) * PAGE_SIZE;
- seq_printf(m, "total_%s %lld\n", mem_cgroup_stat_names[i], val);
+ seq_printf(m, "total_%s %llu\n", mem_cgroup_stat_names[i], val);
}

for (i = 0; i < MEM_CGROUP_EVENTS_NSTATS; i++) {
diff --git a/mm/migrate.c b/mm/migrate.c
index eb4267107d1f..fcb6204de108 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -734,6 +734,15 @@ static int move_to_new_page(struct page *newpage, struct page *page,
if (PageSwapBacked(page))
SetPageSwapBacked(newpage);

+ /*
+ * Indirectly called below, migrate_page_copy() copies PG_dirty and thus
+ * needs newpage's memcg set to transfer memcg dirty page accounting.
+ * So perform memcg migration in two steps:
+ * 1. set newpage->mem_cgroup (here)
+ * 2. clear page->mem_cgroup (below)
+ */
+ set_page_memcg(newpage, page_memcg(page));
+
mapping = page_mapping(page);
if (!mapping)
rc = migrate_page(mapping, newpage, page, mode);
@@ -750,9 +759,10 @@ static int move_to_new_page(struct page *newpage, struct page *page,
rc = fallback_migrate_page(mapping, newpage, page, mode);

if (rc != MIGRATEPAGE_SUCCESS) {
+ set_page_memcg(newpage, NULL);
newpage->mapping = NULL;
} else {
- mem_cgroup_migrate(page, newpage, false);
+ set_page_memcg(page, NULL);
if (page_was_mapped)
remove_migration_ptes(page, newpage);
page->mapping = NULL;
@@ -1068,7 +1078,7 @@ out:
if (rc != MIGRATEPAGE_SUCCESS && put_new_page)
put_new_page(new_hpage, private);
else
- put_page(new_hpage);
+ putback_active_hugepage(new_hpage);

if (result) {
if (rc)
diff --git a/mm/slab.c b/mm/slab.c
index bbd0b47dc6a9..ae360283029c 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -2190,9 +2190,16 @@ __kmem_cache_create (struct kmem_cache *cachep, unsigned long flags)
size += BYTES_PER_WORD;
}
#if FORCED_DEBUG && defined(CONFIG_DEBUG_PAGEALLOC)
- if (size >= kmalloc_size(INDEX_NODE + 1)
- && cachep->object_size > cache_line_size()
- && ALIGN(size, cachep->align) < PAGE_SIZE) {
+ /*
+ * To activate debug pagealloc, off-slab management is necessary
+ * requirement. In early phase of initialization, small sized slab
+ * doesn't get initialized so it would not be possible. So, we need
+ * to check size >= 256. It guarantees that all necessary small
+ * sized slab is initialized in current slab initialization sequence.
+ */
+ if (!slab_early_init && size >= kmalloc_size(INDEX_NODE) &&
+ size >= 256 && cachep->object_size > cache_line_size() &&
+ ALIGN(size, cachep->align) < PAGE_SIZE) {
cachep->obj_offset += PAGE_SIZE - ALIGN(size, cachep->align);
size = PAGE_SIZE;
}
diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c
index 6d0b471eede8..cc7d87d64987 100644
--- a/net/batman-adv/distributed-arp-table.c
+++ b/net/batman-adv/distributed-arp-table.c
@@ -19,6 +19,7 @@
#include "main.h"

#include <linux/atomic.h>
+#include <linux/bitops.h>
#include <linux/byteorder/generic.h>
#include <linux/errno.h>
#include <linux/etherdevice.h>
@@ -453,7 +454,7 @@ static bool batadv_is_orig_node_eligible(struct batadv_dat_candidate *res,
int j;

/* check if orig node candidate is running DAT */
- if (!(candidate->capabilities & BATADV_ORIG_CAPA_HAS_DAT))
+ if (!test_bit(BATADV_ORIG_CAPA_HAS_DAT, &candidate->capabilities))
goto out;

/* Check if this node has already been selected... */
@@ -713,9 +714,9 @@ static void batadv_dat_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv,
uint16_t tvlv_value_len)
{
if (flags & BATADV_TVLV_HANDLER_OGM_CIFNOTFND)
- orig->capabilities &= ~BATADV_ORIG_CAPA_HAS_DAT;
+ clear_bit(BATADV_ORIG_CAPA_HAS_DAT, &orig->capabilities);
else
- orig->capabilities |= BATADV_ORIG_CAPA_HAS_DAT;
+ set_bit(BATADV_ORIG_CAPA_HAS_DAT, &orig->capabilities);
}

/**
diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c
index 7aa480b7edd0..68a9554961eb 100644
--- a/net/batman-adv/multicast.c
+++ b/net/batman-adv/multicast.c
@@ -19,6 +19,8 @@
#include "main.h"

#include <linux/atomic.h>
+#include <linux/bitops.h>
+#include <linux/bug.h>
#include <linux/byteorder/generic.h>
#include <linux/errno.h>
#include <linux/etherdevice.h>
@@ -588,19 +590,26 @@ batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
*
* If the BATADV_MCAST_WANT_ALL_UNSNOOPABLES flag of this originator,
* orig, has toggled then this method updates counter and list accordingly.
+ *
+ * Caller needs to hold orig->mcast_handler_lock.
*/
static void batadv_mcast_want_unsnoop_update(struct batadv_priv *bat_priv,
struct batadv_orig_node *orig,
uint8_t mcast_flags)
{
+ struct hlist_node *node = &orig->mcast_want_all_unsnoopables_node;
+ struct hlist_head *head = &bat_priv->mcast.want_all_unsnoopables_list;
+
/* switched from flag unset to set */
if (mcast_flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES &&
!(orig->mcast_flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES)) {
atomic_inc(&bat_priv->mcast.num_want_all_unsnoopables);

spin_lock_bh(&bat_priv->mcast.want_lists_lock);
- hlist_add_head_rcu(&orig->mcast_want_all_unsnoopables_node,
- &bat_priv->mcast.want_all_unsnoopables_list);
+ /* flag checks above + mcast_handler_lock prevents this */
+ WARN_ON(!hlist_unhashed(node));
+
+ hlist_add_head_rcu(node, head);
spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
/* switched from flag set to unset */
} else if (!(mcast_flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES) &&
@@ -608,7 +617,10 @@ static void batadv_mcast_want_unsnoop_update(struct batadv_priv *bat_priv,
atomic_dec(&bat_priv->mcast.num_want_all_unsnoopables);

spin_lock_bh(&bat_priv->mcast.want_lists_lock);
- hlist_del_rcu(&orig->mcast_want_all_unsnoopables_node);
+ /* flag checks above + mcast_handler_lock prevents this */
+ WARN_ON(hlist_unhashed(node));
+
+ hlist_del_init_rcu(node);
spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
}
}
@@ -621,19 +633,26 @@ static void batadv_mcast_want_unsnoop_update(struct batadv_priv *bat_priv,
*
* If the BATADV_MCAST_WANT_ALL_IPV4 flag of this originator, orig, has
* toggled then this method updates counter and list accordingly.
+ *
+ * Caller needs to hold orig->mcast_handler_lock.
*/
static void batadv_mcast_want_ipv4_update(struct batadv_priv *bat_priv,
struct batadv_orig_node *orig,
uint8_t mcast_flags)
{
+ struct hlist_node *node = &orig->mcast_want_all_ipv4_node;
+ struct hlist_head *head = &bat_priv->mcast.want_all_ipv4_list;
+
/* switched from flag unset to set */
if (mcast_flags & BATADV_MCAST_WANT_ALL_IPV4 &&
!(orig->mcast_flags & BATADV_MCAST_WANT_ALL_IPV4)) {
atomic_inc(&bat_priv->mcast.num_want_all_ipv4);

spin_lock_bh(&bat_priv->mcast.want_lists_lock);
- hlist_add_head_rcu(&orig->mcast_want_all_ipv4_node,
- &bat_priv->mcast.want_all_ipv4_list);
+ /* flag checks above + mcast_handler_lock prevents this */
+ WARN_ON(!hlist_unhashed(node));
+
+ hlist_add_head_rcu(node, head);
spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
/* switched from flag set to unset */
} else if (!(mcast_flags & BATADV_MCAST_WANT_ALL_IPV4) &&
@@ -641,7 +660,10 @@ static void batadv_mcast_want_ipv4_update(struct batadv_priv *bat_priv,
atomic_dec(&bat_priv->mcast.num_want_all_ipv4);

spin_lock_bh(&bat_priv->mcast.want_lists_lock);
- hlist_del_rcu(&orig->mcast_want_all_ipv4_node);
+ /* flag checks above + mcast_handler_lock prevents this */
+ WARN_ON(hlist_unhashed(node));
+
+ hlist_del_init_rcu(node);
spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
}
}
@@ -654,19 +676,26 @@ static void batadv_mcast_want_ipv4_update(struct batadv_priv *bat_priv,
*
* If the BATADV_MCAST_WANT_ALL_IPV6 flag of this originator, orig, has
* toggled then this method updates counter and list accordingly.
+ *
+ * Caller needs to hold orig->mcast_handler_lock.
*/
static void batadv_mcast_want_ipv6_update(struct batadv_priv *bat_priv,
struct batadv_orig_node *orig,
uint8_t mcast_flags)
{
+ struct hlist_node *node = &orig->mcast_want_all_ipv6_node;
+ struct hlist_head *head = &bat_priv->mcast.want_all_ipv6_list;
+
/* switched from flag unset to set */
if (mcast_flags & BATADV_MCAST_WANT_ALL_IPV6 &&
!(orig->mcast_flags & BATADV_MCAST_WANT_ALL_IPV6)) {
atomic_inc(&bat_priv->mcast.num_want_all_ipv6);

spin_lock_bh(&bat_priv->mcast.want_lists_lock);
- hlist_add_head_rcu(&orig->mcast_want_all_ipv6_node,
- &bat_priv->mcast.want_all_ipv6_list);
+ /* flag checks above + mcast_handler_lock prevents this */
+ WARN_ON(!hlist_unhashed(node));
+
+ hlist_add_head_rcu(node, head);
spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
/* switched from flag set to unset */
} else if (!(mcast_flags & BATADV_MCAST_WANT_ALL_IPV6) &&
@@ -674,7 +703,10 @@ static void batadv_mcast_want_ipv6_update(struct batadv_priv *bat_priv,
atomic_dec(&bat_priv->mcast.num_want_all_ipv6);

spin_lock_bh(&bat_priv->mcast.want_lists_lock);
- hlist_del_rcu(&orig->mcast_want_all_ipv6_node);
+ /* flag checks above + mcast_handler_lock prevents this */
+ WARN_ON(hlist_unhashed(node));
+
+ hlist_del_init_rcu(node);
spin_unlock_bh(&bat_priv->mcast.want_lists_lock);
}
}
@@ -697,39 +729,42 @@ static void batadv_mcast_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv,
uint8_t mcast_flags = BATADV_NO_FLAGS;
bool orig_initialized;

- orig_initialized = orig->capa_initialized & BATADV_ORIG_CAPA_HAS_MCAST;
+ if (orig_mcast_enabled && tvlv_value &&
+ (tvlv_value_len >= sizeof(mcast_flags)))
+ mcast_flags = *(uint8_t *)tvlv_value;
+
+ spin_lock_bh(&orig->mcast_handler_lock);
+ orig_initialized = test_bit(BATADV_ORIG_CAPA_HAS_MCAST,
+ &orig->capa_initialized);

/* If mcast support is turned on decrease the disabled mcast node
* counter only if we had increased it for this node before. If this
* is a completely new orig_node no need to decrease the counter.
*/
if (orig_mcast_enabled &&
- !(orig->capabilities & BATADV_ORIG_CAPA_HAS_MCAST)) {
+ !test_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capabilities)) {
if (orig_initialized)
atomic_dec(&bat_priv->mcast.num_disabled);
- orig->capabilities |= BATADV_ORIG_CAPA_HAS_MCAST;
+ set_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capabilities);
/* If mcast support is being switched off or if this is an initial
* OGM without mcast support then increase the disabled mcast
* node counter.
*/
} else if (!orig_mcast_enabled &&
- (orig->capabilities & BATADV_ORIG_CAPA_HAS_MCAST ||
+ (test_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capabilities) ||
!orig_initialized)) {
atomic_inc(&bat_priv->mcast.num_disabled);
- orig->capabilities &= ~BATADV_ORIG_CAPA_HAS_MCAST;
+ clear_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capabilities);
}

- orig->capa_initialized |= BATADV_ORIG_CAPA_HAS_MCAST;
-
- if (orig_mcast_enabled && tvlv_value &&
- (tvlv_value_len >= sizeof(mcast_flags)))
- mcast_flags = *(uint8_t *)tvlv_value;
+ set_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capa_initialized);

batadv_mcast_want_unsnoop_update(bat_priv, orig, mcast_flags);
batadv_mcast_want_ipv4_update(bat_priv, orig, mcast_flags);
batadv_mcast_want_ipv6_update(bat_priv, orig, mcast_flags);

orig->mcast_flags = mcast_flags;
+ spin_unlock_bh(&orig->mcast_handler_lock);
}

/**
@@ -763,11 +798,15 @@ void batadv_mcast_purge_orig(struct batadv_orig_node *orig)
{
struct batadv_priv *bat_priv = orig->bat_priv;

- if (!(orig->capabilities & BATADV_ORIG_CAPA_HAS_MCAST) &&
- orig->capa_initialized & BATADV_ORIG_CAPA_HAS_MCAST)
+ spin_lock_bh(&orig->mcast_handler_lock);
+
+ if (!test_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capabilities) &&
+ test_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capa_initialized))
atomic_dec(&bat_priv->mcast.num_disabled);

batadv_mcast_want_unsnoop_update(bat_priv, orig, BATADV_NO_FLAGS);
batadv_mcast_want_ipv4_update(bat_priv, orig, BATADV_NO_FLAGS);
batadv_mcast_want_ipv6_update(bat_priv, orig, BATADV_NO_FLAGS);
+
+ spin_unlock_bh(&orig->mcast_handler_lock);
}
diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index f0a50f31d822..46604010dcd4 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -19,6 +19,7 @@
#include "main.h"

#include <linux/atomic.h>
+#include <linux/bitops.h>
#include <linux/byteorder/generic.h>
#include <linux/compiler.h>
#include <linux/debugfs.h>
@@ -134,9 +135,9 @@ static void batadv_nc_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv,
uint16_t tvlv_value_len)
{
if (flags & BATADV_TVLV_HANDLER_OGM_CIFNOTFND)
- orig->capabilities &= ~BATADV_ORIG_CAPA_HAS_NC;
+ clear_bit(BATADV_ORIG_CAPA_HAS_NC, &orig->capabilities);
else
- orig->capabilities |= BATADV_ORIG_CAPA_HAS_NC;
+ set_bit(BATADV_ORIG_CAPA_HAS_NC, &orig->capabilities);
}

/**
@@ -894,7 +895,7 @@ void batadv_nc_update_nc_node(struct batadv_priv *bat_priv,
goto out;

/* check if orig node is network coding enabled */
- if (!(orig_node->capabilities & BATADV_ORIG_CAPA_HAS_NC))
+ if (!test_bit(BATADV_ORIG_CAPA_HAS_NC, &orig_node->capabilities))
goto out;

/* accept ogms from 'good' neighbors and single hop neighbors */
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index 018b7495ad84..32a0fcfab36d 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -696,8 +696,13 @@ struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
orig_node->last_seen = jiffies;
reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS);
orig_node->bcast_seqno_reset = reset_time;
+
#ifdef CONFIG_BATMAN_ADV_MCAST
orig_node->mcast_flags = BATADV_NO_FLAGS;
+ INIT_HLIST_NODE(&orig_node->mcast_want_all_unsnoopables_node);
+ INIT_HLIST_NODE(&orig_node->mcast_want_all_ipv4_node);
+ INIT_HLIST_NODE(&orig_node->mcast_want_all_ipv6_node);
+ spin_lock_init(&orig_node->mcast_handler_lock);
#endif

/* create a vlan object for the "untagged" LAN */
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index a2fc843c2243..51cda3a7c51d 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -202,6 +202,7 @@ static int batadv_interface_tx(struct sk_buff *skb,
int gw_mode;
enum batadv_forw_mode forw_mode;
struct batadv_orig_node *mcast_single_orig = NULL;
+ int network_offset = ETH_HLEN;

if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE)
goto dropped;
@@ -214,14 +215,18 @@ static int batadv_interface_tx(struct sk_buff *skb,
case ETH_P_8021Q:
vhdr = vlan_eth_hdr(skb);

- if (vhdr->h_vlan_encapsulated_proto != ethertype)
+ if (vhdr->h_vlan_encapsulated_proto != ethertype) {
+ network_offset += VLAN_HLEN;
break;
+ }

/* fall through */
case ETH_P_BATMAN:
goto dropped;
}

+ skb_set_network_header(skb, network_offset);
+
if (batadv_bla_tx(bat_priv, skb, vid))
goto dropped;

diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 5809b39c1922..c9b26291ac4c 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -19,6 +19,7 @@
#include "main.h"

#include <linux/atomic.h>
+#include <linux/bitops.h>
#include <linux/bug.h>
#include <linux/byteorder/generic.h>
#include <linux/compiler.h>
@@ -1882,7 +1883,7 @@ void batadv_tt_global_del_orig(struct batadv_priv *bat_priv,
}
spin_unlock_bh(list_lock);
}
- orig_node->capa_initialized &= ~BATADV_ORIG_CAPA_HAS_TT;
+ clear_bit(BATADV_ORIG_CAPA_HAS_TT, &orig_node->capa_initialized);
}

static bool batadv_tt_global_to_purge(struct batadv_tt_global_entry *tt_global,
@@ -2841,7 +2842,7 @@ static void _batadv_tt_update_changes(struct batadv_priv *bat_priv,
return;
}
}
- orig_node->capa_initialized |= BATADV_ORIG_CAPA_HAS_TT;
+ set_bit(BATADV_ORIG_CAPA_HAS_TT, &orig_node->capa_initialized);
}

static void batadv_tt_fill_gtable(struct batadv_priv *bat_priv,
@@ -3343,7 +3344,8 @@ static void batadv_tt_update_orig(struct batadv_priv *bat_priv,
bool has_tt_init;

tt_vlan = (struct batadv_tvlv_tt_vlan_data *)tt_buff;
- has_tt_init = orig_node->capa_initialized & BATADV_ORIG_CAPA_HAS_TT;
+ has_tt_init = test_bit(BATADV_ORIG_CAPA_HAS_TT,
+ &orig_node->capa_initialized);

/* orig table not initialised AND first diff is in the OGM OR the ttvn
* increased by one -> we can apply the attached changes
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 67d63483618e..55610a805b53 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -221,6 +221,7 @@ struct batadv_orig_bat_iv {
* @batadv_dat_addr_t: address of the orig node in the distributed hash
* @last_seen: time when last packet from this node was received
* @bcast_seqno_reset: time when the broadcast seqno window was reset
+ * @mcast_handler_lock: synchronizes mcast-capability and -flag changes
* @mcast_flags: multicast flags announced by the orig node
* @mcast_want_all_unsnoop_node: a list node for the
* mcast.want_all_unsnoopables list
@@ -268,13 +269,15 @@ struct batadv_orig_node {
unsigned long last_seen;
unsigned long bcast_seqno_reset;
#ifdef CONFIG_BATMAN_ADV_MCAST
+ /* synchronizes mcast tvlv specific orig changes */
+ spinlock_t mcast_handler_lock;
uint8_t mcast_flags;
struct hlist_node mcast_want_all_unsnoopables_node;
struct hlist_node mcast_want_all_ipv4_node;
struct hlist_node mcast_want_all_ipv6_node;
#endif
- uint8_t capabilities;
- uint8_t capa_initialized;
+ unsigned long capabilities;
+ unsigned long capa_initialized;
atomic_t last_ttvn;
unsigned char *tt_buff;
int16_t tt_buff_len;
@@ -313,10 +316,10 @@ struct batadv_orig_node {
* (= orig node announces a tvlv of type BATADV_TVLV_MCAST)
*/
enum batadv_orig_capabilities {
- BATADV_ORIG_CAPA_HAS_DAT = BIT(0),
- BATADV_ORIG_CAPA_HAS_NC = BIT(1),
- BATADV_ORIG_CAPA_HAS_TT = BIT(2),
- BATADV_ORIG_CAPA_HAS_MCAST = BIT(3),
+ BATADV_ORIG_CAPA_HAS_DAT,
+ BATADV_ORIG_CAPA_HAS_NC,
+ BATADV_ORIG_CAPA_HAS_TT,
+ BATADV_ORIG_CAPA_HAS_MCAST,
};

/**
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index ad82324f710f..0510a577a7b5 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -2311,12 +2311,6 @@ int smp_conn_security(struct hci_conn *hcon, __u8 sec_level)
if (!conn)
return 1;

- chan = conn->smp;
- if (!chan) {
- BT_ERR("SMP security requested but not available");
- return 1;
- }
-
if (!hci_dev_test_flag(hcon->hdev, HCI_LE_ENABLED))
return 1;

@@ -2330,6 +2324,12 @@ int smp_conn_security(struct hci_conn *hcon, __u8 sec_level)
if (smp_ltk_encrypt(conn, hcon->pending_sec_level))
return 0;

+ chan = conn->smp;
+ if (!chan) {
+ BT_ERR("SMP security requested but not available");
+ return 1;
+ }
+
l2cap_chan_lock(chan);

/* If SMP is already in progress ignore this request */
diff --git a/net/netfilter/ipset/ip_set_hash_gen.h b/net/netfilter/ipset/ip_set_hash_gen.h
index afe905c208af..691b54fcaf2a 100644
--- a/net/netfilter/ipset/ip_set_hash_gen.h
+++ b/net/netfilter/ipset/ip_set_hash_gen.h
@@ -152,9 +152,13 @@ htable_bits(u32 hashsize)
#define SET_HOST_MASK(family) (family == AF_INET ? 32 : 128)

#ifdef IP_SET_HASH_WITH_NET0
+/* cidr from 0 to SET_HOST_MASK() value and c = cidr + 1 */
#define NLEN(family) (SET_HOST_MASK(family) + 1)
+#define CIDR_POS(c) ((c) - 1)
#else
+/* cidr from 1 to SET_HOST_MASK() value and c = cidr + 1 */
#define NLEN(family) SET_HOST_MASK(family)
+#define CIDR_POS(c) ((c) - 2)
#endif

#else
@@ -305,7 +309,7 @@ mtype_add_cidr(struct htype *h, u8 cidr, u8 nets_length, u8 n)
} else if (h->nets[i].cidr[n] < cidr) {
j = i;
} else if (h->nets[i].cidr[n] == cidr) {
- h->nets[cidr - 1].nets[n]++;
+ h->nets[CIDR_POS(cidr)].nets[n]++;
return;
}
}
@@ -314,7 +318,7 @@ mtype_add_cidr(struct htype *h, u8 cidr, u8 nets_length, u8 n)
h->nets[i].cidr[n] = h->nets[i - 1].cidr[n];
}
h->nets[i].cidr[n] = cidr;
- h->nets[cidr - 1].nets[n] = 1;
+ h->nets[CIDR_POS(cidr)].nets[n] = 1;
}

static void
@@ -325,8 +329,8 @@ mtype_del_cidr(struct htype *h, u8 cidr, u8 nets_length, u8 n)
for (i = 0; i < nets_length; i++) {
if (h->nets[i].cidr[n] != cidr)
continue;
- h->nets[cidr - 1].nets[n]--;
- if (h->nets[cidr - 1].nets[n] > 0)
+ h->nets[CIDR_POS(cidr)].nets[n]--;
+ if (h->nets[CIDR_POS(cidr)].nets[n] > 0)
return;
for (j = i; j < net_end && h->nets[j].cidr[n]; j++)
h->nets[j].cidr[n] = h->nets[j + 1].cidr[n];
diff --git a/net/netfilter/ipset/ip_set_hash_netnet.c b/net/netfilter/ipset/ip_set_hash_netnet.c
index 3c862c0a76d1..a93dfebffa81 100644
--- a/net/netfilter/ipset/ip_set_hash_netnet.c
+++ b/net/netfilter/ipset/ip_set_hash_netnet.c
@@ -131,6 +131,13 @@ hash_netnet4_data_next(struct hash_netnet4_elem *next,
#define HOST_MASK 32
#include "ip_set_hash_gen.h"

+static void
+hash_netnet4_init(struct hash_netnet4_elem *e)
+{
+ e->cidr[0] = HOST_MASK;
+ e->cidr[1] = HOST_MASK;
+}
+
static int
hash_netnet4_kadt(struct ip_set *set, const struct sk_buff *skb,
const struct xt_action_param *par,
@@ -160,7 +167,7 @@ hash_netnet4_uadt(struct ip_set *set, struct nlattr *tb[],
{
const struct hash_netnet *h = set->data;
ipset_adtfn adtfn = set->variant->adt[adt];
- struct hash_netnet4_elem e = { .cidr = { HOST_MASK, HOST_MASK, }, };
+ struct hash_netnet4_elem e = { };
struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
u32 ip = 0, ip_to = 0, last;
u32 ip2 = 0, ip2_from = 0, ip2_to = 0, last2;
@@ -169,6 +176,7 @@ hash_netnet4_uadt(struct ip_set *set, struct nlattr *tb[],
if (tb[IPSET_ATTR_LINENO])
*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);

+ hash_netnet4_init(&e);
if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
return -IPSET_ERR_PROTOCOL;
@@ -357,6 +365,13 @@ hash_netnet6_data_next(struct hash_netnet4_elem *next,
#define IP_SET_EMIT_CREATE
#include "ip_set_hash_gen.h"

+static void
+hash_netnet6_init(struct hash_netnet6_elem *e)
+{
+ e->cidr[0] = HOST_MASK;
+ e->cidr[1] = HOST_MASK;
+}
+
static int
hash_netnet6_kadt(struct ip_set *set, const struct sk_buff *skb,
const struct xt_action_param *par,
@@ -385,13 +400,14 @@ hash_netnet6_uadt(struct ip_set *set, struct nlattr *tb[],
enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
{
ipset_adtfn adtfn = set->variant->adt[adt];
- struct hash_netnet6_elem e = { .cidr = { HOST_MASK, HOST_MASK, }, };
+ struct hash_netnet6_elem e = { };
struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
int ret;

if (tb[IPSET_ATTR_LINENO])
*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);

+ hash_netnet6_init(&e);
if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
return -IPSET_ERR_PROTOCOL;
diff --git a/net/netfilter/ipset/ip_set_hash_netportnet.c b/net/netfilter/ipset/ip_set_hash_netportnet.c
index 0c68734f5cc4..9a14c237830f 100644
--- a/net/netfilter/ipset/ip_set_hash_netportnet.c
+++ b/net/netfilter/ipset/ip_set_hash_netportnet.c
@@ -142,6 +142,13 @@ hash_netportnet4_data_next(struct hash_netportnet4_elem *next,
#define HOST_MASK 32
#include "ip_set_hash_gen.h"

+static void
+hash_netportnet4_init(struct hash_netportnet4_elem *e)
+{
+ e->cidr[0] = HOST_MASK;
+ e->cidr[1] = HOST_MASK;
+}
+
static int
hash_netportnet4_kadt(struct ip_set *set, const struct sk_buff *skb,
const struct xt_action_param *par,
@@ -175,7 +182,7 @@ hash_netportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
{
const struct hash_netportnet *h = set->data;
ipset_adtfn adtfn = set->variant->adt[adt];
- struct hash_netportnet4_elem e = { .cidr = { HOST_MASK, HOST_MASK, }, };
+ struct hash_netportnet4_elem e = { };
struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
u32 ip = 0, ip_to = 0, ip_last, p = 0, port, port_to;
u32 ip2_from = 0, ip2_to = 0, ip2_last, ip2;
@@ -185,6 +192,7 @@ hash_netportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
if (tb[IPSET_ATTR_LINENO])
*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);

+ hash_netportnet4_init(&e);
if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
!ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
@@ -412,6 +420,13 @@ hash_netportnet6_data_next(struct hash_netportnet4_elem *next,
#define IP_SET_EMIT_CREATE
#include "ip_set_hash_gen.h"

+static void
+hash_netportnet6_init(struct hash_netportnet6_elem *e)
+{
+ e->cidr[0] = HOST_MASK;
+ e->cidr[1] = HOST_MASK;
+}
+
static int
hash_netportnet6_kadt(struct ip_set *set, const struct sk_buff *skb,
const struct xt_action_param *par,
@@ -445,7 +460,7 @@ hash_netportnet6_uadt(struct ip_set *set, struct nlattr *tb[],
{
const struct hash_netportnet *h = set->data;
ipset_adtfn adtfn = set->variant->adt[adt];
- struct hash_netportnet6_elem e = { .cidr = { HOST_MASK, HOST_MASK, }, };
+ struct hash_netportnet6_elem e = { };
struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
u32 port, port_to;
bool with_ports = false;
@@ -454,6 +469,7 @@ hash_netportnet6_uadt(struct ip_set *set, struct nlattr *tb[],
if (tb[IPSET_ATTR_LINENO])
*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);

+ hash_netportnet6_init(&e);
if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
!ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
!ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 3c20d02aee73..0625a42df108 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -320,12 +320,13 @@ out_free:
}
EXPORT_SYMBOL_GPL(nf_ct_tmpl_alloc);

-static void nf_ct_tmpl_free(struct nf_conn *tmpl)
+void nf_ct_tmpl_free(struct nf_conn *tmpl)
{
nf_ct_ext_destroy(tmpl);
nf_ct_ext_free(tmpl);
kfree(tmpl);
}
+EXPORT_SYMBOL_GPL(nf_ct_tmpl_free);

static void
destroy_conntrack(struct nf_conntrack *nfct)
diff --git a/net/netfilter/nf_log.c b/net/netfilter/nf_log.c
index 675d12c69e32..a5d41dfa9f05 100644
--- a/net/netfilter/nf_log.c
+++ b/net/netfilter/nf_log.c
@@ -107,12 +107,17 @@ EXPORT_SYMBOL(nf_log_register);

void nf_log_unregister(struct nf_logger *logger)
{
+ const struct nf_logger *log;
int i;

mutex_lock(&nf_log_mutex);
- for (i = 0; i < NFPROTO_NUMPROTO; i++)
- RCU_INIT_POINTER(loggers[i][logger->type], NULL);
+ for (i = 0; i < NFPROTO_NUMPROTO; i++) {
+ log = nft_log_dereference(loggers[i][logger->type]);
+ if (log == logger)
+ RCU_INIT_POINTER(loggers[i][logger->type], NULL);
+ }
mutex_unlock(&nf_log_mutex);
+ synchronize_rcu();
}
EXPORT_SYMBOL(nf_log_unregister);

diff --git a/net/netfilter/nf_synproxy_core.c b/net/netfilter/nf_synproxy_core.c
index d7f168527903..d6ee8f8b19b6 100644
--- a/net/netfilter/nf_synproxy_core.c
+++ b/net/netfilter/nf_synproxy_core.c
@@ -378,7 +378,7 @@ static int __net_init synproxy_net_init(struct net *net)
err3:
free_percpu(snet->stats);
err2:
- nf_conntrack_free(ct);
+ nf_ct_tmpl_free(ct);
err1:
return err;
}
diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c
index 0c0e8ecf02ab..70277b11f742 100644
--- a/net/netfilter/nfnetlink.c
+++ b/net/netfilter/nfnetlink.c
@@ -444,6 +444,7 @@ done:
static void nfnetlink_rcv(struct sk_buff *skb)
{
struct nlmsghdr *nlh = nlmsg_hdr(skb);
+ u_int16_t res_id;
int msglen;

if (nlh->nlmsg_len < NLMSG_HDRLEN ||
@@ -468,7 +469,12 @@ static void nfnetlink_rcv(struct sk_buff *skb)

nfgenmsg = nlmsg_data(nlh);
skb_pull(skb, msglen);
- nfnetlink_rcv_batch(skb, nlh, nfgenmsg->res_id);
+ /* Work around old nft using host byte order */
+ if (nfgenmsg->res_id == NFNL_SUBSYS_NFTABLES)
+ res_id = NFNL_SUBSYS_NFTABLES;
+ else
+ res_id = ntohs(nfgenmsg->res_id);
+ nfnetlink_rcv_batch(skb, nlh, res_id);
} else {
netlink_rcv_skb(skb, &nfnetlink_rcv_msg);
}
diff --git a/net/netfilter/nft_compat.c b/net/netfilter/nft_compat.c
index 66def315eb56..9c8fab00164b 100644
--- a/net/netfilter/nft_compat.c
+++ b/net/netfilter/nft_compat.c
@@ -619,6 +619,13 @@ struct nft_xt {

static struct nft_expr_type nft_match_type;

+static bool nft_match_cmp(const struct xt_match *match,
+ const char *name, u32 rev, u32 family)
+{
+ return strcmp(match->name, name) == 0 && match->revision == rev &&
+ (match->family == NFPROTO_UNSPEC || match->family == family);
+}
+
static const struct nft_expr_ops *
nft_match_select_ops(const struct nft_ctx *ctx,
const struct nlattr * const tb[])
@@ -626,7 +633,7 @@ nft_match_select_ops(const struct nft_ctx *ctx,
struct nft_xt *nft_match;
struct xt_match *match;
char *mt_name;
- __u32 rev, family;
+ u32 rev, family;

if (tb[NFTA_MATCH_NAME] == NULL ||
tb[NFTA_MATCH_REV] == NULL ||
@@ -641,8 +648,7 @@ nft_match_select_ops(const struct nft_ctx *ctx,
list_for_each_entry(nft_match, &nft_match_list, head) {
struct xt_match *match = nft_match->ops.data;

- if (strcmp(match->name, mt_name) == 0 &&
- match->revision == rev && match->family == family) {
+ if (nft_match_cmp(match, mt_name, rev, family)) {
if (!try_module_get(match->me))
return ERR_PTR(-ENOENT);

@@ -693,6 +699,13 @@ static LIST_HEAD(nft_target_list);

static struct nft_expr_type nft_target_type;

+static bool nft_target_cmp(const struct xt_target *tg,
+ const char *name, u32 rev, u32 family)
+{
+ return strcmp(tg->name, name) == 0 && tg->revision == rev &&
+ (tg->family == NFPROTO_UNSPEC || tg->family == family);
+}
+
static const struct nft_expr_ops *
nft_target_select_ops(const struct nft_ctx *ctx,
const struct nlattr * const tb[])
@@ -700,7 +713,7 @@ nft_target_select_ops(const struct nft_ctx *ctx,
struct nft_xt *nft_target;
struct xt_target *target;
char *tg_name;
- __u32 rev, family;
+ u32 rev, family;

if (tb[NFTA_TARGET_NAME] == NULL ||
tb[NFTA_TARGET_REV] == NULL ||
@@ -715,8 +728,7 @@ nft_target_select_ops(const struct nft_ctx *ctx,
list_for_each_entry(nft_target, &nft_target_list, head) {
struct xt_target *target = nft_target->ops.data;

- if (strcmp(target->name, tg_name) == 0 &&
- target->revision == rev && target->family == family) {
+ if (nft_target_cmp(target, tg_name, rev, family)) {
if (!try_module_get(target->me))
return ERR_PTR(-ENOENT);

diff --git a/net/netfilter/xt_CT.c b/net/netfilter/xt_CT.c
index 43ddeee404e9..f3377ce1ff18 100644
--- a/net/netfilter/xt_CT.c
+++ b/net/netfilter/xt_CT.c
@@ -233,7 +233,7 @@ out:
return 0;

err3:
- nf_conntrack_free(ct);
+ nf_ct_tmpl_free(ct);
err2:
nf_ct_l3proto_module_put(par->family);
err1:
diff --git a/net/sunrpc/xprtrdma/svc_rdma_sendto.c b/net/sunrpc/xprtrdma/svc_rdma_sendto.c
index d25cd430f9ff..95412abc95b0 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_sendto.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_sendto.c
@@ -384,6 +384,7 @@ static int send_reply(struct svcxprt_rdma *rdma,
int byte_count)
{
struct ib_send_wr send_wr;
+ u32 xdr_off;
int sge_no;
int sge_bytes;
int page_no;
@@ -418,8 +419,8 @@ static int send_reply(struct svcxprt_rdma *rdma,
ctxt->direction = DMA_TO_DEVICE;

/* Map the payload indicated by 'byte_count' */
+ xdr_off = 0;
for (sge_no = 1; byte_count && sge_no < vec->count; sge_no++) {
- int xdr_off = 0;
sge_bytes = min_t(size_t, vec->sge[sge_no].iov_len, byte_count);
byte_count -= sge_bytes;
ctxt->sge[sge_no].addr =
@@ -457,6 +458,13 @@ static int send_reply(struct svcxprt_rdma *rdma,
}
rqstp->rq_next_page = rqstp->rq_respages + 1;

+ /* The loop above bumps sc_dma_used for each sge. The
+ * xdr_buf.tail gets a separate sge, but resides in the
+ * same page as xdr_buf.head. Don't count it twice.
+ */
+ if (sge_no > ctxt->count)
+ atomic_dec(&rdma->sc_dma_used);
+
if (sge_no > rdma->sc_max_sge) {
pr_err("svcrdma: Too many sges (%d)\n", sge_no);
goto err;
diff --git a/sound/arm/Kconfig b/sound/arm/Kconfig
index 885683a3b0bd..e0406211716b 100644
--- a/sound/arm/Kconfig
+++ b/sound/arm/Kconfig
@@ -9,6 +9,14 @@ menuconfig SND_ARM
Drivers that are implemented on ASoC can be found in
"ALSA for SoC audio support" section.

+config SND_PXA2XX_LIB
+ tristate
+ select SND_AC97_CODEC if SND_PXA2XX_LIB_AC97
+ select SND_DMAENGINE_PCM
+
+config SND_PXA2XX_LIB_AC97
+ bool
+
if SND_ARM

config SND_ARMAACI
@@ -21,13 +29,6 @@ config SND_PXA2XX_PCM
tristate
select SND_PCM

-config SND_PXA2XX_LIB
- tristate
- select SND_AC97_CODEC if SND_PXA2XX_LIB_AC97
-
-config SND_PXA2XX_LIB_AC97
- bool
-
config SND_PXA2XX_AC97
tristate "AC97 driver for the Intel PXA2xx chip"
depends on ARCH_PXA
diff --git a/sound/pci/hda/hda_tegra.c b/sound/pci/hda/hda_tegra.c
index 477742cb70a2..58c0aad37284 100644
--- a/sound/pci/hda/hda_tegra.c
+++ b/sound/pci/hda/hda_tegra.c
@@ -73,6 +73,7 @@ struct hda_tegra {
struct clk *hda2codec_2x_clk;
struct clk *hda2hdmi_clk;
void __iomem *regs;
+ struct work_struct probe_work;
};

#ifdef CONFIG_PM
@@ -294,7 +295,9 @@ static int hda_tegra_dev_disconnect(struct snd_device *device)
static int hda_tegra_dev_free(struct snd_device *device)
{
struct azx *chip = device->device_data;
+ struct hda_tegra *hda = container_of(chip, struct hda_tegra, chip);

+ cancel_work_sync(&hda->probe_work);
if (azx_bus(chip)->chip_init) {
azx_stop_all_streams(chip);
azx_stop_chip(chip);
@@ -426,6 +429,9 @@ static int hda_tegra_first_init(struct azx *chip, struct platform_device *pdev)
/*
* constructor
*/
+
+static void hda_tegra_probe_work(struct work_struct *work);
+
static int hda_tegra_create(struct snd_card *card,
unsigned int driver_caps,
struct hda_tegra *hda)
@@ -452,6 +458,8 @@ static int hda_tegra_create(struct snd_card *card,
chip->single_cmd = false;
chip->snoop = true;

+ INIT_WORK(&hda->probe_work, hda_tegra_probe_work);
+
err = azx_bus_init(chip, NULL, &hda_tegra_io_ops);
if (err < 0)
return err;
@@ -499,6 +507,21 @@ static int hda_tegra_probe(struct platform_device *pdev)
card->private_data = chip;

dev_set_drvdata(&pdev->dev, card);
+ schedule_work(&hda->probe_work);
+
+ return 0;
+
+out_free:
+ snd_card_free(card);
+ return err;
+}
+
+static void hda_tegra_probe_work(struct work_struct *work)
+{
+ struct hda_tegra *hda = container_of(work, struct hda_tegra, probe_work);
+ struct azx *chip = &hda->chip;
+ struct platform_device *pdev = to_platform_device(hda->dev);
+ int err;

err = hda_tegra_first_init(chip, pdev);
if (err < 0)
@@ -520,11 +543,8 @@ static int hda_tegra_probe(struct platform_device *pdev)
chip->running = 1;
snd_hda_set_power_save(&chip->bus, power_save * 1000);

- return 0;
-
-out_free:
- snd_card_free(card);
- return err;
+ out_free:
+ return; /* no error return from async probe */
}

static int hda_tegra_remove(struct platform_device *pdev)
diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c
index 584a0343ab0c..85813de26da8 100644
--- a/sound/pci/hda/patch_cirrus.c
+++ b/sound/pci/hda/patch_cirrus.c
@@ -633,6 +633,7 @@ static const struct snd_pci_quirk cs4208_mac_fixup_tbl[] = {
SND_PCI_QUIRK(0x106b, 0x5e00, "MacBookPro 11,2", CS4208_MBP11),
SND_PCI_QUIRK(0x106b, 0x7100, "MacBookAir 6,1", CS4208_MBA6),
SND_PCI_QUIRK(0x106b, 0x7200, "MacBookAir 6,2", CS4208_MBA6),
+ SND_PCI_QUIRK(0x106b, 0x7b00, "MacBookPro 12,1", CS4208_MBP11),
{} /* terminator */
};

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index c8f01ccc2513..6a66139871c6 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -4188,6 +4188,24 @@ static void alc_fixup_disable_aamix(struct hda_codec *codec,
}
}

+/* fixup for Thinkpad docks: add dock pins, avoid HP parser fixup */
+static void alc_fixup_tpt440_dock(struct hda_codec *codec,
+ const struct hda_fixup *fix, int action)
+{
+ static const struct hda_pintbl pincfgs[] = {
+ { 0x16, 0x21211010 }, /* dock headphone */
+ { 0x19, 0x21a11010 }, /* dock mic */
+ { }
+ };
+ struct alc_spec *spec = codec->spec;
+
+ if (action == HDA_FIXUP_ACT_PRE_PROBE) {
+ spec->parse_flags = HDA_PINCFG_NO_HP_FIXUP;
+ codec->power_save_node = 0; /* avoid click noises */
+ snd_hda_apply_pincfgs(codec, pincfgs);
+ }
+}
+
static void alc_shutup_dell_xps13(struct hda_codec *codec)
{
struct alc_spec *spec = codec->spec;
@@ -4562,7 +4580,6 @@ enum {
ALC255_FIXUP_HEADSET_MODE_NO_HP_MIC,
ALC293_FIXUP_DELL1_MIC_NO_PRESENCE,
ALC292_FIXUP_TPT440_DOCK,
- ALC292_FIXUP_TPT440_DOCK2,
ALC283_FIXUP_BXBT2807_MIC,
ALC255_FIXUP_DELL_WMI_MIC_MUTE_LED,
ALC282_FIXUP_ASPIRE_V5_PINS,
@@ -5029,17 +5046,7 @@ static const struct hda_fixup alc269_fixups[] = {
},
[ALC292_FIXUP_TPT440_DOCK] = {
.type = HDA_FIXUP_FUNC,
- .v.func = alc269_fixup_pincfg_no_hp_to_lineout,
- .chained = true,
- .chain_id = ALC292_FIXUP_TPT440_DOCK2
- },
- [ALC292_FIXUP_TPT440_DOCK2] = {
- .type = HDA_FIXUP_PINS,
- .v.pins = (const struct hda_pintbl[]) {
- { 0x16, 0x21211010 }, /* dock headphone */
- { 0x19, 0x21a11010 }, /* dock mic */
- { }
- },
+ .v.func = alc_fixup_tpt440_dock,
.chained = true,
.chain_id = ALC269_FIXUP_LIMIT_INT_MIC_BOOST
},
@@ -5299,6 +5306,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
SND_PCI_QUIRK(0x17aa, 0x2212, "Thinkpad T440", ALC292_FIXUP_TPT440_DOCK),
SND_PCI_QUIRK(0x17aa, 0x2214, "Thinkpad X240", ALC292_FIXUP_TPT440_DOCK),
SND_PCI_QUIRK(0x17aa, 0x2215, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
+ SND_PCI_QUIRK(0x17aa, 0x2223, "ThinkPad T550", ALC292_FIXUP_TPT440_DOCK),
SND_PCI_QUIRK(0x17aa, 0x2226, "ThinkPad X250", ALC292_FIXUP_TPT440_DOCK),
SND_PCI_QUIRK(0x17aa, 0x3977, "IdeaPad S210", ALC283_FIXUP_INT_MIC),
SND_PCI_QUIRK(0x17aa, 0x3978, "IdeaPad Y410P", ALC269_FIXUP_NO_SHUTUP),
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 9d947aef2c8b..def5cc8dff02 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -4520,7 +4520,11 @@ static int patch_stac92hd73xx(struct hda_codec *codec)
return err;

spec = codec->spec;
- codec->power_save_node = 1;
+ /* enable power_save_node only for new 92HD89xx chips, as it causes
+ * click noises on old 92HD73xx chips.
+ */
+ if ((codec->core.vendor_id & 0xfffffff0) != 0x111d7670)
+ codec->power_save_node = 1;
spec->linear_tone_beep = 0;
spec->gen.mixer_nid = 0x1d;
spec->have_spdif_mux = 1;
diff --git a/sound/soc/au1x/db1200.c b/sound/soc/au1x/db1200.c
index 58c3164802b8..8c907ebea189 100644
--- a/sound/soc/au1x/db1200.c
+++ b/sound/soc/au1x/db1200.c
@@ -129,6 +129,8 @@ static struct snd_soc_dai_link db1300_i2s_dai = {
.cpu_dai_name = "au1xpsc_i2s.2",
.platform_name = "au1xpsc-pcm.2",
.codec_name = "wm8731.0-001b",
+ .dai_fmt = SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBM_CFM,
.ops = &db1200_i2s_wm8731_ops,
};

@@ -146,6 +148,8 @@ static struct snd_soc_dai_link db1550_i2s_dai = {
.cpu_dai_name = "au1xpsc_i2s.3",
.platform_name = "au1xpsc-pcm.3",
.codec_name = "wm8731.0-001b",
+ .dai_fmt = SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBM_CFM,
.ops = &db1200_i2s_wm8731_ops,
};

diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c
index e673f6ceb521..7c411297bfdd 100644
--- a/sound/soc/codecs/sgtl5000.c
+++ b/sound/soc/codecs/sgtl5000.c
@@ -1377,8 +1377,8 @@ static int sgtl5000_probe(struct snd_soc_codec *codec)
sgtl5000->micbias_resistor << SGTL5000_BIAS_R_SHIFT);

snd_soc_update_bits(codec, SGTL5000_CHIP_MIC_CTRL,
- SGTL5000_BIAS_R_MASK,
- sgtl5000->micbias_voltage << SGTL5000_BIAS_R_SHIFT);
+ SGTL5000_BIAS_VOLT_MASK,
+ sgtl5000->micbias_voltage << SGTL5000_BIAS_VOLT_SHIFT);
/*
* disable DAP
* TODO:
diff --git a/sound/soc/codecs/tas2552.c b/sound/soc/codecs/tas2552.c
index 4f25a7d0efa2..b3e5685aca1e 100644
--- a/sound/soc/codecs/tas2552.c
+++ b/sound/soc/codecs/tas2552.c
@@ -551,7 +551,7 @@ static struct snd_soc_dai_driver tas2552_dai[] = {
/*
* DAC digital volumes. From -7 to 24 dB in 1 dB steps
*/
-static DECLARE_TLV_DB_SCALE(dac_tlv, -7, 100, 0);
+static DECLARE_TLV_DB_SCALE(dac_tlv, -700, 100, 0);

static const char * const tas2552_din_source_select[] = {
"Muted",
diff --git a/sound/soc/dwc/designware_i2s.c b/sound/soc/dwc/designware_i2s.c
index a3e97b46b64e..0d28e3b356f6 100644
--- a/sound/soc/dwc/designware_i2s.c
+++ b/sound/soc/dwc/designware_i2s.c
@@ -131,10 +131,10 @@ static inline void i2s_clear_irqs(struct dw_i2s_dev *dev, u32 stream)

if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
for (i = 0; i < 4; i++)
- i2s_write_reg(dev->i2s_base, TOR(i), 0);
+ i2s_read_reg(dev->i2s_base, TOR(i));
} else {
for (i = 0; i < 4; i++)
- i2s_write_reg(dev->i2s_base, ROR(i), 0);
+ i2s_read_reg(dev->i2s_base, ROR(i));
}
}

diff --git a/sound/soc/pxa/Kconfig b/sound/soc/pxa/Kconfig
index 39cea80846c3..f2bf8661dd21 100644
--- a/sound/soc/pxa/Kconfig
+++ b/sound/soc/pxa/Kconfig
@@ -1,7 +1,6 @@
config SND_PXA2XX_SOC
tristate "SoC Audio for the Intel PXA2xx chip"
depends on ARCH_PXA
- select SND_ARM
select SND_PXA2XX_LIB
help
Say Y or M if you want to add support for codecs attached to
@@ -25,7 +24,6 @@ config SND_PXA2XX_AC97
config SND_PXA2XX_SOC_AC97
tristate
select AC97_BUS
- select SND_ARM
select SND_PXA2XX_LIB_AC97
select SND_SOC_AC97_BUS

diff --git a/sound/soc/pxa/pxa2xx-ac97.c b/sound/soc/pxa/pxa2xx-ac97.c
index 1f6054650991..9e4b04e0fbd1 100644
--- a/sound/soc/pxa/pxa2xx-ac97.c
+++ b/sound/soc/pxa/pxa2xx-ac97.c
@@ -49,7 +49,7 @@ static struct snd_ac97_bus_ops pxa2xx_ac97_ops = {
.reset = pxa2xx_ac97_cold_reset,
};

-static unsigned long pxa2xx_ac97_pcm_stereo_in_req = 12;
+static unsigned long pxa2xx_ac97_pcm_stereo_in_req = 11;
static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_in = {
.addr = __PREG(PCDR),
.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
@@ -57,7 +57,7 @@ static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_in = {
.filter_data = &pxa2xx_ac97_pcm_stereo_in_req,
};

-static unsigned long pxa2xx_ac97_pcm_stereo_out_req = 11;
+static unsigned long pxa2xx_ac97_pcm_stereo_out_req = 12;
static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_out = {
.addr = __PREG(PCDR),
.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
diff --git a/sound/synth/emux/emux_oss.c b/sound/synth/emux/emux_oss.c
index 82e350e9501c..ac75816ada7c 100644
--- a/sound/synth/emux/emux_oss.c
+++ b/sound/synth/emux/emux_oss.c
@@ -69,7 +69,8 @@ snd_emux_init_seq_oss(struct snd_emux *emu)
struct snd_seq_oss_reg *arg;
struct snd_seq_device *dev;

- if (snd_seq_device_new(emu->card, 0, SNDRV_SEQ_DEV_ID_OSS,
+ /* using device#1 here for avoiding conflicts with OPL3 */
+ if (snd_seq_device_new(emu->card, 1, SNDRV_SEQ_DEV_ID_OSS,
sizeof(struct snd_seq_oss_reg), &dev) < 0)
return;

diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c
index e44052483ed9..80159e6811c2 100644
--- a/tools/lguest/lguest.c
+++ b/tools/lguest/lguest.c
@@ -125,7 +125,11 @@ struct device_list {
/* The list of Guest devices, based on command line arguments. */
static struct device_list devices;

-struct virtio_pci_cfg_cap {
+/*
+ * Just like struct virtio_pci_cfg_cap in uapi/linux/virtio_pci.h,
+ * but uses a u32 explicitly for the data.
+ */
+struct virtio_pci_cfg_cap_u32 {
struct virtio_pci_cap cap;
u32 pci_cfg_data; /* Data for BAR access. */
};
@@ -157,7 +161,7 @@ struct pci_config {
struct virtio_pci_notify_cap notify;
struct virtio_pci_cap isr;
struct virtio_pci_cap device;
- struct virtio_pci_cfg_cap cfg_access;
+ struct virtio_pci_cfg_cap_u32 cfg_access;
};

/* The device structure describes a single device. */
@@ -1291,7 +1295,7 @@ static struct device *dev_and_reg(u32 *reg)
* only fault if they try to write with some invalid bar/offset/length.
*/
static bool valid_bar_access(struct device *d,
- struct virtio_pci_cfg_cap *cfg_access)
+ struct virtio_pci_cfg_cap_u32 *cfg_access)
{
/* We only have 1 bar (BAR0) */
if (cfg_access->cap.bar != 0)
diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index cc25f059ab3d..a843bee66a4f 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -3721,7 +3721,7 @@ static void print_str_arg(struct trace_seq *s, void *data, int size,
struct format_field *field;
struct printk_map *printk;
long long val, fval;
- unsigned long addr;
+ unsigned long long addr;
char *str;
unsigned char *hex;
int print;
@@ -3754,13 +3754,30 @@ static void print_str_arg(struct trace_seq *s, void *data, int size,
*/
if (!(field->flags & FIELD_IS_ARRAY) &&
field->size == pevent->long_size) {
- addr = *(unsigned long *)(data + field->offset);
+
+ /* Handle heterogeneous recording and processing
+ * architectures
+ *
+ * CASE I:
+ * Traces recorded on 32-bit devices (32-bit
+ * addressing) and processed on 64-bit devices:
+ * In this case, only 32 bits should be read.
+ *
+ * CASE II:
+ * Traces recorded on 64 bit devices and processed
+ * on 32-bit devices:
+ * In this case, 64 bits must be read.
+ */
+ addr = (pevent->long_size == 8) ?
+ *(unsigned long long *)(data + field->offset) :
+ (unsigned long long)*(unsigned int *)(data + field->offset);
+
/* Check if it matches a print format */
printk = find_printk(pevent, addr);
if (printk)
trace_seq_puts(s, printk->printk);
else
- trace_seq_printf(s, "%lx", addr);
+ trace_seq_printf(s, "%llx", addr);
break;
}
str = malloc(len + 1);
diff --git a/tools/perf/arch/alpha/Build b/tools/perf/arch/alpha/Build
new file mode 100644
index 000000000000..1bb8bf6d7fd4
--- /dev/null
+++ b/tools/perf/arch/alpha/Build
@@ -0,0 +1 @@
+# empty
diff --git a/tools/perf/arch/mips/Build b/tools/perf/arch/mips/Build
new file mode 100644
index 000000000000..1bb8bf6d7fd4
--- /dev/null
+++ b/tools/perf/arch/mips/Build
@@ -0,0 +1 @@
+# empty
diff --git a/tools/perf/arch/parisc/Build b/tools/perf/arch/parisc/Build
new file mode 100644
index 000000000000..1bb8bf6d7fd4
--- /dev/null
+++ b/tools/perf/arch/parisc/Build
@@ -0,0 +1 @@
+# empty
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index d99d850e1444..ef355fc0e870 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -694,7 +694,7 @@ static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg)
static void print_aggr(char *prefix)
{
struct perf_evsel *counter;
- int cpu, cpu2, s, s2, id, nr;
+ int cpu, s, s2, id, nr;
double uval;
u64 ena, run, val;

@@ -707,8 +707,7 @@ static void print_aggr(char *prefix)
val = ena = run = 0;
nr = 0;
for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
- cpu2 = perf_evsel__cpus(counter)->map[cpu];
- s2 = aggr_get_id(evsel_list->cpus, cpu2);
+ s2 = aggr_get_id(perf_evsel__cpus(counter), cpu);
if (s2 != id)
continue;
val += perf_counts(counter->counts, cpu, 0)->val;
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 03ace57a800c..4215cc155041 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -1442,7 +1442,7 @@ static int process_nrcpus(struct perf_file_section *section __maybe_unused,
if (ph->needs_swap)
nr = bswap_32(nr);

- ph->env.nr_cpus_online = nr;
+ ph->env.nr_cpus_avail = nr;

ret = readn(fd, &nr, sizeof(nr));
if (ret != sizeof(nr))
@@ -1451,7 +1451,7 @@ static int process_nrcpus(struct perf_file_section *section __maybe_unused,
if (ph->needs_swap)
nr = bswap_32(nr);

- ph->env.nr_cpus_avail = nr;
+ ph->env.nr_cpus_online = nr;
return 0;
}

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 6f28d53d4e46..f298c696e24f 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -151,6 +151,9 @@ void hists__calc_col_len(struct hists *hists, struct hist_entry *h)
hists__new_col_len(hists, HISTC_LOCAL_WEIGHT, 12);
hists__new_col_len(hists, HISTC_GLOBAL_WEIGHT, 12);

+ if (h->srcline)
+ hists__new_col_len(hists, HISTC_SRCLINE, strlen(h->srcline));
+
if (h->transaction)
hists__new_col_len(hists, HISTC_TRANSACTION,
hist_entry__transaction_len());
diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index 591905a02b92..9cd70819c795 100644
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -255,7 +255,7 @@ PE_PMU_EVENT_PRE '-' PE_PMU_EVENT_SUF sep_dc
list_add_tail(&term->list, head);

ALLOC_LIST(list);
- ABORT_ON(parse_events_add_pmu(list, &data->idx, "cpu", head));
+ ABORT_ON(parse_events_add_pmu(data, list, "cpu", head));
parse_events__free_terms(head);
$$ = list;
}
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 381f23a443c7..ae6351db6de4 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -274,12 +274,13 @@ static int kernel_get_module_dso(const char *module, struct dso **pdso)
int ret = 0;

if (module) {
- list_for_each_entry(dso, &host_machine->dsos.head, node) {
- if (!dso->kernel)
- continue;
- if (strncmp(dso->short_name + 1, module,
- dso->short_name_len - 2) == 0)
- goto found;
+ char module_name[128];
+
+ snprintf(module_name, sizeof(module_name), "[%s]", module);
+ map = map_groups__find_by_name(&host_machine->kmaps, MAP__FUNCTION, module_name);
+ if (map) {
+ dso = map->dso;
+ goto found;
}
pr_debug("Failed to find module %s.\n", module);
return -ENOENT;
diff --git a/tools/perf/util/probe-event.h b/tools/perf/util/probe-event.h
index 31db6ee7db54..cd55c6db421d 100644
--- a/tools/perf/util/probe-event.h
+++ b/tools/perf/util/probe-event.h
@@ -106,6 +106,8 @@ struct variable_list {
struct strlist *vars; /* Available variables */
};

+struct map;
+
/* Command string to events */
extern int parse_perf_probe_command(const char *cmd,
struct perf_probe_event *pev);
diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
index 65f7e389ae09..333858821ab0 100644
--- a/tools/perf/util/symbol-elf.c
+++ b/tools/perf/util/symbol-elf.c
@@ -1260,8 +1260,6 @@ out_close:
static int kcore__init(struct kcore *kcore, char *filename, int elfclass,
bool temp)
{
- GElf_Ehdr *ehdr;
-
kcore->elfclass = elfclass;

if (temp)
@@ -1278,9 +1276,7 @@ static int kcore__init(struct kcore *kcore, char *filename, int elfclass,
if (!gelf_newehdr(kcore->elf, elfclass))
goto out_end;

- ehdr = gelf_getehdr(kcore->elf, &kcore->ehdr);
- if (!ehdr)
- goto out_end;
+ memset(&kcore->ehdr, 0, sizeof(GElf_Ehdr));

return 0;

@@ -1337,23 +1333,18 @@ static int kcore__copy_hdr(struct kcore *from, struct kcore *to, size_t count)
static int kcore__add_phdr(struct kcore *kcore, int idx, off_t offset,
u64 addr, u64 len)
{
- GElf_Phdr gphdr;
- GElf_Phdr *phdr;
-
- phdr = gelf_getphdr(kcore->elf, idx, &gphdr);
- if (!phdr)
- return -1;
-
- phdr->p_type = PT_LOAD;
- phdr->p_flags = PF_R | PF_W | PF_X;
- phdr->p_offset = offset;
- phdr->p_vaddr = addr;
- phdr->p_paddr = 0;
- phdr->p_filesz = len;
- phdr->p_memsz = len;
- phdr->p_align = page_size;
-
- if (!gelf_update_phdr(kcore->elf, idx, phdr))
+ GElf_Phdr phdr = {
+ .p_type = PT_LOAD,
+ .p_flags = PF_R | PF_W | PF_X,
+ .p_offset = offset,
+ .p_vaddr = addr,
+ .p_paddr = 0,
+ .p_filesz = len,
+ .p_memsz = len,
+ .p_align = page_size,
+ };
+
+ if (!gelf_update_phdr(kcore->elf, idx, &phdr))
return -1;

return 0;
diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c
index 9ff4193dfa49..79db45336e3a 100644
--- a/virt/kvm/eventfd.c
+++ b/virt/kvm/eventfd.c
@@ -771,40 +771,14 @@ static enum kvm_bus ioeventfd_bus_from_flags(__u32 flags)
return KVM_MMIO_BUS;
}

-static int
-kvm_assign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
+static int kvm_assign_ioeventfd_idx(struct kvm *kvm,
+ enum kvm_bus bus_idx,
+ struct kvm_ioeventfd *args)
{
- enum kvm_bus bus_idx;
- struct _ioeventfd *p;
- struct eventfd_ctx *eventfd;
- int ret;
-
- bus_idx = ioeventfd_bus_from_flags(args->flags);
- /* must be natural-word sized, or 0 to ignore length */
- switch (args->len) {
- case 0:
- case 1:
- case 2:
- case 4:
- case 8:
- break;
- default:
- return -EINVAL;
- }
-
- /* check for range overflow */
- if (args->addr + args->len < args->addr)
- return -EINVAL;

- /* check for extra flags that we don't understand */
- if (args->flags & ~KVM_IOEVENTFD_VALID_FLAG_MASK)
- return -EINVAL;
-
- /* ioeventfd with no length can't be combined with DATAMATCH */
- if (!args->len &&
- args->flags & (KVM_IOEVENTFD_FLAG_PIO |
- KVM_IOEVENTFD_FLAG_DATAMATCH))
- return -EINVAL;
+ struct eventfd_ctx *eventfd;
+ struct _ioeventfd *p;
+ int ret;

eventfd = eventfd_ctx_fdget(args->fd);
if (IS_ERR(eventfd))
@@ -843,16 +817,6 @@ kvm_assign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
if (ret < 0)
goto unlock_fail;

- /* When length is ignored, MMIO is also put on a separate bus, for
- * faster lookups.
- */
- if (!args->len && !(args->flags & KVM_IOEVENTFD_FLAG_PIO)) {
- ret = kvm_io_bus_register_dev(kvm, KVM_FAST_MMIO_BUS,
- p->addr, 0, &p->dev);
- if (ret < 0)
- goto register_fail;
- }
-
kvm->buses[bus_idx]->ioeventfd_count++;
list_add_tail(&p->list, &kvm->ioeventfds);

@@ -860,8 +824,6 @@ kvm_assign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)

return 0;

-register_fail:
- kvm_io_bus_unregister_dev(kvm, bus_idx, &p->dev);
unlock_fail:
mutex_unlock(&kvm->slots_lock);

@@ -873,14 +835,13 @@ fail:
}

static int
-kvm_deassign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
+kvm_deassign_ioeventfd_idx(struct kvm *kvm, enum kvm_bus bus_idx,
+ struct kvm_ioeventfd *args)
{
- enum kvm_bus bus_idx;
struct _ioeventfd *p, *tmp;
struct eventfd_ctx *eventfd;
int ret = -ENOENT;

- bus_idx = ioeventfd_bus_from_flags(args->flags);
eventfd = eventfd_ctx_fdget(args->fd);
if (IS_ERR(eventfd))
return PTR_ERR(eventfd);
@@ -901,10 +862,6 @@ kvm_deassign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
continue;

kvm_io_bus_unregister_dev(kvm, bus_idx, &p->dev);
- if (!p->length) {
- kvm_io_bus_unregister_dev(kvm, KVM_FAST_MMIO_BUS,
- &p->dev);
- }
kvm->buses[bus_idx]->ioeventfd_count--;
ioeventfd_release(p);
ret = 0;
@@ -918,6 +875,71 @@ kvm_deassign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
return ret;
}

+static int kvm_deassign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
+{
+ enum kvm_bus bus_idx = ioeventfd_bus_from_flags(args->flags);
+ int ret = kvm_deassign_ioeventfd_idx(kvm, bus_idx, args);
+
+ if (!args->len && bus_idx == KVM_MMIO_BUS)
+ kvm_deassign_ioeventfd_idx(kvm, KVM_FAST_MMIO_BUS, args);
+
+ return ret;
+}
+
+static int
+kvm_assign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
+{
+ enum kvm_bus bus_idx;
+ int ret;
+
+ bus_idx = ioeventfd_bus_from_flags(args->flags);
+ /* must be natural-word sized, or 0 to ignore length */
+ switch (args->len) {
+ case 0:
+ case 1:
+ case 2:
+ case 4:
+ case 8:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* check for range overflow */
+ if (args->addr + args->len < args->addr)
+ return -EINVAL;
+
+ /* check for extra flags that we don't understand */
+ if (args->flags & ~KVM_IOEVENTFD_VALID_FLAG_MASK)
+ return -EINVAL;
+
+ /* ioeventfd with no length can't be combined with DATAMATCH */
+ if (!args->len &&
+ args->flags & (KVM_IOEVENTFD_FLAG_PIO |
+ KVM_IOEVENTFD_FLAG_DATAMATCH))
+ return -EINVAL;
+
+ ret = kvm_assign_ioeventfd_idx(kvm, bus_idx, args);
+ if (ret)
+ goto fail;
+
+ /* When length is ignored, MMIO is also put on a separate bus, for
+ * faster lookups.
+ */
+ if (!args->len && bus_idx == KVM_MMIO_BUS) {
+ ret = kvm_assign_ioeventfd_idx(kvm, KVM_FAST_MMIO_BUS, args);
+ if (ret < 0)
+ goto fast_fail;
+ }
+
+ return 0;
+
+fast_fail:
+ kvm_deassign_ioeventfd_idx(kvm, bus_idx, args);
+fail:
+ return ret;
+}
+
int
kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
{
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 8b8a44453670..5a2a78a91d58 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -3080,10 +3080,25 @@ static void kvm_io_bus_destroy(struct kvm_io_bus *bus)
static inline int kvm_io_bus_cmp(const struct kvm_io_range *r1,
const struct kvm_io_range *r2)
{
- if (r1->addr < r2->addr)
+ gpa_t addr1 = r1->addr;
+ gpa_t addr2 = r2->addr;
+
+ if (addr1 < addr2)
return -1;
- if (r1->addr + r1->len > r2->addr + r2->len)
+
+ /* If r2->len == 0, match the exact address. If r2->len != 0,
+ * accept any overlapping write. Any order is acceptable for
+ * overlapping ranges, because kvm_io_bus_get_first_dev ensures
+ * we process all of them.
+ */
+ if (r2->len) {
+ addr1 += r1->len;
+ addr2 += r2->len;
+ }
+
+ if (addr1 > addr2)
return 1;
+
return 0;
}


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