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SubjectRe: Linux 4.9.88
diff --git a/Makefile b/Makefile
index 3043937a65d1..1512ebceffda 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 4
PATCHLEVEL = 9
-SUBLEVEL = 87
+SUBLEVEL = 88
EXTRAVERSION =
NAME = Roaring Lionus

diff --git a/arch/arm/mach-omap2/omap-secure.c b/arch/arm/mach-omap2/omap-secure.c
index 9ff92050053c..fa7f308c9027 100644
--- a/arch/arm/mach-omap2/omap-secure.c
+++ b/arch/arm/mach-omap2/omap-secure.c
@@ -73,6 +73,7 @@ phys_addr_t omap_secure_ram_mempool_base(void)
return omap_secure_memblock_base;
}

+#if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM)
u32 omap3_save_secure_ram(void __iomem *addr, int size)
{
u32 ret;
@@ -91,6 +92,7 @@ u32 omap3_save_secure_ram(void __iomem *addr, int size)

return ret;
}
+#endif

/**
* rx51_secure_dispatcher: Routine to dispatch secure PPA API calls
diff --git a/arch/mips/ath25/board.c b/arch/mips/ath25/board.c
index 9ab48ff80c1c..6d11ae581ea7 100644
--- a/arch/mips/ath25/board.c
+++ b/arch/mips/ath25/board.c
@@ -135,6 +135,8 @@ int __init ath25_find_config(phys_addr_t base, unsigned long size)
}

board_data = kzalloc(BOARD_CONFIG_BUFSZ, GFP_KERNEL);
+ if (!board_data)
+ goto error;
ath25_board.config = (struct ath25_boarddata *)board_data;
memcpy_fromio(board_data, bcfg, 0x100);
if (broken_boarddata) {
diff --git a/arch/mips/cavium-octeon/octeon-irq.c b/arch/mips/cavium-octeon/octeon-irq.c
index c1eb1ff7c800..6ed1ded87b8f 100644
--- a/arch/mips/cavium-octeon/octeon-irq.c
+++ b/arch/mips/cavium-octeon/octeon-irq.c
@@ -2277,6 +2277,8 @@ static int __init octeon_irq_init_cib(struct device_node *ciu_node,
}

host_data = kzalloc(sizeof(*host_data), GFP_KERNEL);
+ if (!host_data)
+ return -ENOMEM;
raw_spin_lock_init(&host_data->lock);

addr = of_get_address(ciu_node, 0, NULL, NULL);
diff --git a/arch/mips/kernel/smp-bmips.c b/arch/mips/kernel/smp-bmips.c
index 47c9646f93b3..d4a293b68249 100644
--- a/arch/mips/kernel/smp-bmips.c
+++ b/arch/mips/kernel/smp-bmips.c
@@ -166,11 +166,11 @@ static void bmips_prepare_cpus(unsigned int max_cpus)
return;
}

- if (request_irq(IPI0_IRQ, bmips_ipi_interrupt, IRQF_PERCPU,
- "smp_ipi0", NULL))
+ if (request_irq(IPI0_IRQ, bmips_ipi_interrupt,
+ IRQF_PERCPU | IRQF_NO_SUSPEND, "smp_ipi0", NULL))
panic("Can't request IPI0 interrupt");
- if (request_irq(IPI1_IRQ, bmips_ipi_interrupt, IRQF_PERCPU,
- "smp_ipi1", NULL))
+ if (request_irq(IPI1_IRQ, bmips_ipi_interrupt,
+ IRQF_PERCPU | IRQF_NO_SUSPEND, "smp_ipi1", NULL))
panic("Can't request IPI1 interrupt");
}

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 5ba494ed18c1..a70ff09b4982 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -1601,6 +1601,7 @@ static void sca_add_vcpu(struct kvm_vcpu *vcpu)
/* we still need the basic sca for the ipte control */
vcpu->arch.sie_block->scaoh = (__u32)(((__u64)sca) >> 32);
vcpu->arch.sie_block->scaol = (__u32)(__u64)sca;
+ return;
}
read_lock(&vcpu->kvm->arch.sca_lock);
if (vcpu->kvm->arch.use_esca) {
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index cd22cb8ebd42..b60996184fa4 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -184,7 +184,10 @@ KBUILD_AFLAGS += $(mflags-y)

# Avoid indirect branches in kernel to deal with Spectre
ifdef CONFIG_RETPOLINE
- RETPOLINE_CFLAGS += $(call cc-option,-mindirect-branch=thunk-extern -mindirect-branch-register)
+ RETPOLINE_CFLAGS_GCC := -mindirect-branch=thunk-extern -mindirect-branch-register
+ RETPOLINE_CFLAGS_CLANG := -mretpoline-external-thunk
+
+ RETPOLINE_CFLAGS += $(call cc-option,$(RETPOLINE_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_CFLAGS_CLANG)))
ifneq ($(RETPOLINE_CFLAGS),)
KBUILD_CFLAGS += $(RETPOLINE_CFLAGS) -DRETPOLINE
endif
diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S
index f5434b4670c1..a76dc738ec61 100644
--- a/arch/x86/entry/entry_32.S
+++ b/arch/x86/entry/entry_32.S
@@ -237,8 +237,7 @@ ENTRY(__switch_to_asm)
* exist, overwrite the RSB with entries which capture
* speculative execution to prevent attack.
*/
- /* Clobbers %ebx */
- FILL_RETURN_BUFFER RSB_CLEAR_LOOPS, X86_FEATURE_RSB_CTXSW
+ FILL_RETURN_BUFFER %ebx, RSB_CLEAR_LOOPS, X86_FEATURE_RSB_CTXSW
#endif

/* restore callee-saved registers */
diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index 8d7e4d48db0d..58610fe93f5d 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -331,8 +331,7 @@ ENTRY(__switch_to_asm)
* exist, overwrite the RSB with entries which capture
* speculative execution to prevent attack.
*/
- /* Clobbers %rbx */
- FILL_RETURN_BUFFER RSB_CLEAR_LOOPS, X86_FEATURE_RSB_CTXSW
+ FILL_RETURN_BUFFER %r12, RSB_CLEAR_LOOPS, X86_FEATURE_RSB_CTXSW
#endif

/* restore callee-saved registers */
diff --git a/arch/x86/include/asm/apm.h b/arch/x86/include/asm/apm.h
index 93eebc636c76..46e40aeae446 100644
--- a/arch/x86/include/asm/apm.h
+++ b/arch/x86/include/asm/apm.h
@@ -6,6 +6,8 @@
#ifndef _ASM_X86_MACH_DEFAULT_APM_H
#define _ASM_X86_MACH_DEFAULT_APM_H

+#include <asm/nospec-branch.h>
+
#ifdef APM_ZERO_SEGS
# define APM_DO_ZERO_SEGS \
"pushl %%ds\n\t" \
@@ -31,6 +33,7 @@ static inline void apm_bios_call_asm(u32 func, u32 ebx_in, u32 ecx_in,
* N.B. We do NOT need a cld after the BIOS call
* because we always save and restore the flags.
*/
+ firmware_restrict_branch_speculation_start();
__asm__ __volatile__(APM_DO_ZERO_SEGS
"pushl %%edi\n\t"
"pushl %%ebp\n\t"
@@ -43,6 +46,7 @@ static inline void apm_bios_call_asm(u32 func, u32 ebx_in, u32 ecx_in,
"=S" (*esi)
: "a" (func), "b" (ebx_in), "c" (ecx_in)
: "memory", "cc");
+ firmware_restrict_branch_speculation_end();
}

static inline bool apm_bios_call_simple_asm(u32 func, u32 ebx_in,
@@ -55,6 +59,7 @@ static inline bool apm_bios_call_simple_asm(u32 func, u32 ebx_in,
* N.B. We do NOT need a cld after the BIOS call
* because we always save and restore the flags.
*/
+ firmware_restrict_branch_speculation_start();
__asm__ __volatile__(APM_DO_ZERO_SEGS
"pushl %%edi\n\t"
"pushl %%ebp\n\t"
@@ -67,6 +72,7 @@ static inline bool apm_bios_call_simple_asm(u32 func, u32 ebx_in,
"=S" (si)
: "a" (func), "b" (ebx_in), "c" (ecx_in)
: "memory", "cc");
+ firmware_restrict_branch_speculation_end();
return error;
}

diff --git a/arch/x86/include/asm/asm-prototypes.h b/arch/x86/include/asm/asm-prototypes.h
index 166654218329..5a25ada75aeb 100644
--- a/arch/x86/include/asm/asm-prototypes.h
+++ b/arch/x86/include/asm/asm-prototypes.h
@@ -37,7 +37,4 @@ INDIRECT_THUNK(dx)
INDIRECT_THUNK(si)
INDIRECT_THUNK(di)
INDIRECT_THUNK(bp)
-asmlinkage void __fill_rsb(void);
-asmlinkage void __clear_rsb(void);
-
#endif /* CONFIG_RETPOLINE */
diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index 8eb23f5cf7f4..ed7a1d2c4235 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -203,6 +203,7 @@
#define X86_FEATURE_KAISER ( 7*32+31) /* CONFIG_PAGE_TABLE_ISOLATION w/o nokaiser */

#define X86_FEATURE_USE_IBPB ( 7*32+21) /* "" Indirect Branch Prediction Barrier enabled */
+#define X86_FEATURE_USE_IBRS_FW ( 7*32+22) /* "" Use IBRS during runtime firmware calls */

/* Virtualization flags: Linux defined, word 8 */
#define X86_FEATURE_TPR_SHADOW ( 8*32+ 0) /* Intel TPR Shadow */
diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index 389d700b961e..9df22bb07f7f 100644
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -5,6 +5,7 @@
#include <asm/pgtable.h>
#include <asm/processor-flags.h>
#include <asm/tlb.h>
+#include <asm/nospec-branch.h>

/*
* We map the EFI regions needed for runtime services non-contiguously,
@@ -35,8 +36,18 @@

extern unsigned long asmlinkage efi_call_phys(void *, ...);

-#define arch_efi_call_virt_setup() kernel_fpu_begin()
-#define arch_efi_call_virt_teardown() kernel_fpu_end()
+#define arch_efi_call_virt_setup() \
+({ \
+ kernel_fpu_begin(); \
+ firmware_restrict_branch_speculation_start(); \
+})
+
+#define arch_efi_call_virt_teardown() \
+({ \
+ firmware_restrict_branch_speculation_end(); \
+ kernel_fpu_end(); \
+})
+

/*
* Wrap all the virtual calls in a way that forces the parameters on the stack.
@@ -72,6 +83,7 @@ struct efi_scratch {
efi_sync_low_kernel_mappings(); \
preempt_disable(); \
__kernel_fpu_begin(); \
+ firmware_restrict_branch_speculation_start(); \
\
if (efi_scratch.use_pgd) { \
efi_scratch.prev_cr3 = read_cr3(); \
@@ -90,6 +102,7 @@ struct efi_scratch {
__flush_tlb_all(); \
} \
\
+ firmware_restrict_branch_speculation_end(); \
__kernel_fpu_end(); \
preempt_enable(); \
})
diff --git a/arch/x86/include/asm/nospec-branch.h b/arch/x86/include/asm/nospec-branch.h
index 81a1be326571..d0dabeae0505 100644
--- a/arch/x86/include/asm/nospec-branch.h
+++ b/arch/x86/include/asm/nospec-branch.h
@@ -8,6 +8,50 @@
#include <asm/cpufeatures.h>
#include <asm/msr-index.h>

+/*
+ * Fill the CPU return stack buffer.
+ *
+ * Each entry in the RSB, if used for a speculative 'ret', contains an
+ * infinite 'pause; lfence; jmp' loop to capture speculative execution.
+ *
+ * This is required in various cases for retpoline and IBRS-based
+ * mitigations for the Spectre variant 2 vulnerability. Sometimes to
+ * eliminate potentially bogus entries from the RSB, and sometimes
+ * purely to ensure that it doesn't get empty, which on some CPUs would
+ * allow predictions from other (unwanted!) sources to be used.
+ *
+ * We define a CPP macro such that it can be used from both .S files and
+ * inline assembly. It's possible to do a .macro and then include that
+ * from C via asm(".include <asm/nospec-branch.h>") but let's not go there.
+ */
+
+#define RSB_CLEAR_LOOPS 32 /* To forcibly overwrite all entries */
+#define RSB_FILL_LOOPS 16 /* To avoid underflow */
+
+/*
+ * Google experimented with loop-unrolling and this turned out to be
+ * the optimal version — two calls, each with their own speculation
+ * trap should their return address end up getting used, in a loop.
+ */
+#define __FILL_RETURN_BUFFER(reg, nr, sp) \
+ mov $(nr/2), reg; \
+771: \
+ call 772f; \
+773: /* speculation trap */ \
+ pause; \
+ lfence; \
+ jmp 773b; \
+772: \
+ call 774f; \
+775: /* speculation trap */ \
+ pause; \
+ lfence; \
+ jmp 775b; \
+774: \
+ dec reg; \
+ jnz 771b; \
+ add $(BITS_PER_LONG/8) * nr, sp;
+
#ifdef __ASSEMBLY__

/*
@@ -23,6 +67,18 @@
.popsection
.endm

+/*
+ * This should be used immediately before an indirect jump/call. It tells
+ * objtool the subsequent indirect jump/call is vouched safe for retpoline
+ * builds.
+ */
+.macro ANNOTATE_RETPOLINE_SAFE
+ .Lannotate_\@:
+ .pushsection .discard.retpoline_safe
+ _ASM_PTR .Lannotate_\@
+ .popsection
+.endm
+
/*
* These are the bare retpoline primitives for indirect jmp and call.
* Do not use these directly; they only exist to make the ALTERNATIVE
@@ -59,9 +115,9 @@
.macro JMP_NOSPEC reg:req
#ifdef CONFIG_RETPOLINE
ANNOTATE_NOSPEC_ALTERNATIVE
- ALTERNATIVE_2 __stringify(jmp *\reg), \
+ ALTERNATIVE_2 __stringify(ANNOTATE_RETPOLINE_SAFE; jmp *\reg), \
__stringify(RETPOLINE_JMP \reg), X86_FEATURE_RETPOLINE, \
- __stringify(lfence; jmp *\reg), X86_FEATURE_RETPOLINE_AMD
+ __stringify(lfence; ANNOTATE_RETPOLINE_SAFE; jmp *\reg), X86_FEATURE_RETPOLINE_AMD
#else
jmp *\reg
#endif
@@ -70,18 +126,25 @@
.macro CALL_NOSPEC reg:req
#ifdef CONFIG_RETPOLINE
ANNOTATE_NOSPEC_ALTERNATIVE
- ALTERNATIVE_2 __stringify(call *\reg), \
+ ALTERNATIVE_2 __stringify(ANNOTATE_RETPOLINE_SAFE; call *\reg), \
__stringify(RETPOLINE_CALL \reg), X86_FEATURE_RETPOLINE,\
- __stringify(lfence; call *\reg), X86_FEATURE_RETPOLINE_AMD
+ __stringify(lfence; ANNOTATE_RETPOLINE_SAFE; call *\reg), X86_FEATURE_RETPOLINE_AMD
#else
call *\reg
#endif
.endm

-/* This clobbers the BX register */
-.macro FILL_RETURN_BUFFER nr:req ftr:req
+ /*
+ * A simpler FILL_RETURN_BUFFER macro. Don't make people use the CPP
+ * monstrosity above, manually.
+ */
+.macro FILL_RETURN_BUFFER reg:req nr:req ftr:req
#ifdef CONFIG_RETPOLINE
- ALTERNATIVE "", "call __clear_rsb", \ftr
+ ANNOTATE_NOSPEC_ALTERNATIVE
+ ALTERNATIVE "jmp .Lskip_rsb_\@", \
+ __stringify(__FILL_RETURN_BUFFER(\reg,\nr,%_ASM_SP)) \
+ \ftr
+.Lskip_rsb_\@:
#endif
.endm

@@ -93,6 +156,12 @@
".long 999b - .\n\t" \
".popsection\n\t"

+#define ANNOTATE_RETPOLINE_SAFE \
+ "999:\n\t" \
+ ".pushsection .discard.retpoline_safe\n\t" \
+ _ASM_PTR " 999b\n\t" \
+ ".popsection\n\t"
+
#if defined(CONFIG_X86_64) && defined(RETPOLINE)

/*
@@ -102,6 +171,7 @@
# define CALL_NOSPEC \
ANNOTATE_NOSPEC_ALTERNATIVE \
ALTERNATIVE( \
+ ANNOTATE_RETPOLINE_SAFE \
"call *%[thunk_target]\n", \
"call __x86_indirect_thunk_%V[thunk_target]\n", \
X86_FEATURE_RETPOLINE)
@@ -156,26 +226,54 @@ extern char __indirect_thunk_end[];
static inline void vmexit_fill_RSB(void)
{
#ifdef CONFIG_RETPOLINE
- alternative_input("",
- "call __fill_rsb",
- X86_FEATURE_RETPOLINE,
- ASM_NO_INPUT_CLOBBER(_ASM_BX, "memory"));
+ unsigned long loops;
+
+ asm volatile (ANNOTATE_NOSPEC_ALTERNATIVE
+ ALTERNATIVE("jmp 910f",
+ __stringify(__FILL_RETURN_BUFFER(%0, RSB_CLEAR_LOOPS, %1)),
+ X86_FEATURE_RETPOLINE)
+ "910:"
+ : "=r" (loops), ASM_CALL_CONSTRAINT
+ : : "memory" );
#endif
}

+#define alternative_msr_write(_msr, _val, _feature) \
+ asm volatile(ALTERNATIVE("", \
+ "movl %[msr], %%ecx\n\t" \
+ "movl %[val], %%eax\n\t" \
+ "movl $0, %%edx\n\t" \
+ "wrmsr", \
+ _feature) \
+ : : [msr] "i" (_msr), [val] "i" (_val) \
+ : "eax", "ecx", "edx", "memory")
+
static inline void indirect_branch_prediction_barrier(void)
{
- asm volatile(ALTERNATIVE("",
- "movl %[msr], %%ecx\n\t"
- "movl %[val], %%eax\n\t"
- "movl $0, %%edx\n\t"
- "wrmsr",
- X86_FEATURE_USE_IBPB)
- : : [msr] "i" (MSR_IA32_PRED_CMD),
- [val] "i" (PRED_CMD_IBPB)
- : "eax", "ecx", "edx", "memory");
+ alternative_msr_write(MSR_IA32_PRED_CMD, PRED_CMD_IBPB,
+ X86_FEATURE_USE_IBPB);
}

+/*
+ * With retpoline, we must use IBRS to restrict branch prediction
+ * before calling into firmware.
+ *
+ * (Implemented as CPP macros due to header hell.)
+ */
+#define firmware_restrict_branch_speculation_start() \
+do { \
+ preempt_disable(); \
+ alternative_msr_write(MSR_IA32_SPEC_CTRL, SPEC_CTRL_IBRS, \
+ X86_FEATURE_USE_IBRS_FW); \
+} while (0)
+
+#define firmware_restrict_branch_speculation_end() \
+do { \
+ alternative_msr_write(MSR_IA32_SPEC_CTRL, 0, \
+ X86_FEATURE_USE_IBRS_FW); \
+ preempt_enable(); \
+} while (0)
+
#endif /* __ASSEMBLY__ */

/*
diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h
index ce932812f142..24af8b1de438 100644
--- a/arch/x86/include/asm/paravirt.h
+++ b/arch/x86/include/asm/paravirt.h
@@ -6,6 +6,7 @@
#ifdef CONFIG_PARAVIRT
#include <asm/pgtable_types.h>
#include <asm/asm.h>
+#include <asm/nospec-branch.h>

#include <asm/paravirt_types.h>

@@ -869,23 +870,27 @@ extern void default_banner(void);

#define INTERRUPT_RETURN \
PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_iret), CLBR_NONE, \
- jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_iret))
+ ANNOTATE_RETPOLINE_SAFE; \
+ jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_iret);)

#define DISABLE_INTERRUPTS(clobbers) \
PARA_SITE(PARA_PATCH(pv_irq_ops, PV_IRQ_irq_disable), clobbers, \
PV_SAVE_REGS(clobbers | CLBR_CALLEE_SAVE); \
+ ANNOTATE_RETPOLINE_SAFE; \
call PARA_INDIRECT(pv_irq_ops+PV_IRQ_irq_disable); \
PV_RESTORE_REGS(clobbers | CLBR_CALLEE_SAVE);)

#define ENABLE_INTERRUPTS(clobbers) \
PARA_SITE(PARA_PATCH(pv_irq_ops, PV_IRQ_irq_enable), clobbers, \
PV_SAVE_REGS(clobbers | CLBR_CALLEE_SAVE); \
+ ANNOTATE_RETPOLINE_SAFE; \
call PARA_INDIRECT(pv_irq_ops+PV_IRQ_irq_enable); \
PV_RESTORE_REGS(clobbers | CLBR_CALLEE_SAVE);)

#ifdef CONFIG_X86_32
#define GET_CR0_INTO_EAX \
push %ecx; push %edx; \
+ ANNOTATE_RETPOLINE_SAFE; \
call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0); \
pop %edx; pop %ecx
#else /* !CONFIG_X86_32 */
@@ -907,11 +912,13 @@ extern void default_banner(void);
*/
#define SWAPGS \
PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_swapgs), CLBR_NONE, \
- call PARA_INDIRECT(pv_cpu_ops+PV_CPU_swapgs) \
+ ANNOTATE_RETPOLINE_SAFE; \
+ call PARA_INDIRECT(pv_cpu_ops+PV_CPU_swapgs); \
)

#define GET_CR2_INTO_RAX \
- call PARA_INDIRECT(pv_mmu_ops+PV_MMU_read_cr2)
+ ANNOTATE_RETPOLINE_SAFE; \
+ call PARA_INDIRECT(pv_mmu_ops+PV_MMU_read_cr2);

#define PARAVIRT_ADJUST_EXCEPTION_FRAME \
PARA_SITE(PARA_PATCH(pv_irq_ops, PV_IRQ_adjust_exception_frame), \
@@ -921,7 +928,8 @@ extern void default_banner(void);
#define USERGS_SYSRET64 \
PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_usergs_sysret64), \
CLBR_NONE, \
- jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_usergs_sysret64))
+ ANNOTATE_RETPOLINE_SAFE; \
+ jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_usergs_sysret64);)
#endif /* CONFIG_X86_32 */

#endif /* __ASSEMBLY__ */
diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h
index 0f400c0e4979..04b79712b09c 100644
--- a/arch/x86/include/asm/paravirt_types.h
+++ b/arch/x86/include/asm/paravirt_types.h
@@ -42,6 +42,7 @@
#include <asm/desc_defs.h>
#include <asm/kmap_types.h>
#include <asm/pgtable_types.h>
+#include <asm/nospec-branch.h>

struct page;
struct thread_struct;
@@ -391,7 +392,9 @@ int paravirt_disable_iospace(void);
* offset into the paravirt_patch_template structure, and can therefore be
* freely converted back into a structure offset.
*/
-#define PARAVIRT_CALL "call *%c[paravirt_opptr];"
+#define PARAVIRT_CALL \
+ ANNOTATE_RETPOLINE_SAFE \
+ "call *%c[paravirt_opptr];"

/*
* These macros are intended to wrap calls through one of the paravirt
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index baddc9ed3454..b8b0b6e78371 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -299,6 +299,15 @@ static void __init spectre_v2_select_mitigation(void)
setup_force_cpu_cap(X86_FEATURE_USE_IBPB);
pr_info("Spectre v2 mitigation: Enabling Indirect Branch Prediction Barrier\n");
}
+
+ /*
+ * Retpoline means the kernel is safe because it has no indirect
+ * branches. But firmware isn't, so use IBRS to protect that.
+ */
+ if (boot_cpu_has(X86_FEATURE_IBRS)) {
+ setup_force_cpu_cap(X86_FEATURE_USE_IBRS_FW);
+ pr_info("Enabling Restricted Speculation for firmware calls\n");
+ }
}

#undef pr_fmt
@@ -325,8 +334,9 @@ ssize_t cpu_show_spectre_v2(struct device *dev, struct device_attribute *attr, c
if (!boot_cpu_has_bug(X86_BUG_SPECTRE_V2))
return sprintf(buf, "Not affected\n");

- return sprintf(buf, "%s%s%s\n", spectre_v2_strings[spectre_v2_enabled],
+ return sprintf(buf, "%s%s%s%s\n", spectre_v2_strings[spectre_v2_enabled],
boot_cpu_has(X86_FEATURE_USE_IBPB) ? ", IBPB" : "",
+ boot_cpu_has(X86_FEATURE_USE_IBRS_FW) ? ", IBRS_FW" : "",
spectre_v2_module_string());
}
#endif
diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index 6ed206bd9071..768042530af2 100644
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -103,6 +103,13 @@ static bool bad_spectre_microcode(struct cpuinfo_x86 *c)
{
int i;

+ /*
+ * We know that the hypervisor lie to us on the microcode version so
+ * we may as well hope that it is running the correct version.
+ */
+ if (cpu_has(c, X86_FEATURE_HYPERVISOR))
+ return false;
+
for (i = 0; i < ARRAY_SIZE(spectre_bad_microcodes); i++) {
if (c->x86_model == spectre_bad_microcodes[i].model &&
c->x86_stepping == spectre_bad_microcodes[i].stepping)
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index fe5cd6ea1f0e..684d9fd191e0 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -61,6 +61,9 @@ static DEFINE_MUTEX(mce_chrdev_read_mutex);
smp_load_acquire(&(p)); \
})

+/* sysfs synchronization */
+static DEFINE_MUTEX(mce_sysfs_mutex);
+
#define CREATE_TRACE_POINTS
#include <trace/events/mce.h>

@@ -2308,6 +2311,7 @@ static ssize_t set_ignore_ce(struct device *s,
if (kstrtou64(buf, 0, &new) < 0)
return -EINVAL;

+ mutex_lock(&mce_sysfs_mutex);
if (mca_cfg.ignore_ce ^ !!new) {
if (new) {
/* disable ce features */
@@ -2320,6 +2324,8 @@ static ssize_t set_ignore_ce(struct device *s,
on_each_cpu(mce_enable_ce, (void *)1, 1);
}
}
+ mutex_unlock(&mce_sysfs_mutex);
+
return size;
}

@@ -2332,6 +2338,7 @@ static ssize_t set_cmci_disabled(struct device *s,
if (kstrtou64(buf, 0, &new) < 0)
return -EINVAL;

+ mutex_lock(&mce_sysfs_mutex);
if (mca_cfg.cmci_disabled ^ !!new) {
if (new) {
/* disable cmci */
@@ -2343,6 +2350,8 @@ static ssize_t set_cmci_disabled(struct device *s,
on_each_cpu(mce_enable_ce, NULL, 1);
}
}
+ mutex_unlock(&mce_sysfs_mutex);
+
return size;
}

@@ -2350,8 +2359,19 @@ static ssize_t store_int_with_restart(struct device *s,
struct device_attribute *attr,
const char *buf, size_t size)
{
- ssize_t ret = device_store_int(s, attr, buf, size);
+ unsigned long old_check_interval = check_interval;
+ ssize_t ret = device_store_ulong(s, attr, buf, size);
+
+ if (check_interval == old_check_interval)
+ return ret;
+
+ if (check_interval < 1)
+ check_interval = 1;
+
+ mutex_lock(&mce_sysfs_mutex);
mce_restart();
+ mutex_unlock(&mce_sysfs_mutex);
+
return ret;
}

diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S
index 67cd7c1b99da..9d72cf547c88 100644
--- a/arch/x86/kernel/head_64.S
+++ b/arch/x86/kernel/head_64.S
@@ -22,6 +22,7 @@
#include <asm/nops.h>
#include "../entry/calling.h"
#include <asm/export.h>
+#include <asm/nospec-branch.h>

#ifdef CONFIG_PARAVIRT
#include <asm/asm-offsets.h>
@@ -200,6 +201,7 @@ ENTRY(secondary_startup_64)

/* Ensure I am executing from virtual addresses */
movq $1f, %rax
+ ANNOTATE_RETPOLINE_SAFE
jmp *%rax
1:

diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c
index 8c1f218926d7..a5784a14f8d1 100644
--- a/arch/x86/kernel/machine_kexec_64.c
+++ b/arch/x86/kernel/machine_kexec_64.c
@@ -524,6 +524,7 @@ int arch_kexec_apply_relocations_add(const Elf64_Ehdr *ehdr,
goto overflow;
break;
case R_X86_64_PC32:
+ case R_X86_64_PLT32:
value -= (u64)address;
*(u32 *)location = value;
break;
diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c
index 477ae806c2fa..19977d2f97fb 100644
--- a/arch/x86/kernel/module.c
+++ b/arch/x86/kernel/module.c
@@ -171,19 +171,28 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
case R_X86_64_NONE:
break;
case R_X86_64_64:
+ if (*(u64 *)loc != 0)
+ goto invalid_relocation;
*(u64 *)loc = val;
break;
case R_X86_64_32:
+ if (*(u32 *)loc != 0)
+ goto invalid_relocation;
*(u32 *)loc = val;
if (val != *(u32 *)loc)
goto overflow;
break;
case R_X86_64_32S:
+ if (*(s32 *)loc != 0)
+ goto invalid_relocation;
*(s32 *)loc = val;
if ((s64)val != *(s32 *)loc)
goto overflow;
break;
case R_X86_64_PC32:
+ case R_X86_64_PLT32:
+ if (*(u32 *)loc != 0)
+ goto invalid_relocation;
val -= (u64)loc;
*(u32 *)loc = val;
#if 0
@@ -199,6 +208,11 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
}
return 0;

+invalid_relocation:
+ pr_err("x86/modules: Skipping invalid relocation target, existing value is nonzero for type %d, loc %p, val %Lx\n",
+ (int)ELF64_R_TYPE(rel[i].r_info), loc, val);
+ return -ENOEXEC;
+
overflow:
pr_err("overflow in relocation type %d val %Lx\n",
(int)ELF64_R_TYPE(rel[i].r_info), val);
diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index 4ad7c4dd311c..6bf1898ddf49 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -26,7 +26,6 @@ lib-$(CONFIG_RWSEM_XCHGADD_ALGORITHM) += rwsem.o
lib-$(CONFIG_INSTRUCTION_DECODER) += insn.o inat.o
lib-$(CONFIG_RANDOMIZE_BASE) += kaslr.o
lib-$(CONFIG_RETPOLINE) += retpoline.o
-OBJECT_FILES_NON_STANDARD_retpoline.o :=y

obj-y += msr.o msr-reg.o msr-reg-export.o hweight.o

diff --git a/arch/x86/lib/retpoline.S b/arch/x86/lib/retpoline.S
index 480edc3a5e03..c909961e678a 100644
--- a/arch/x86/lib/retpoline.S
+++ b/arch/x86/lib/retpoline.S
@@ -7,7 +7,6 @@
#include <asm/alternative-asm.h>
#include <asm/export.h>
#include <asm/nospec-branch.h>
-#include <asm/bitsperlong.h>

.macro THUNK reg
.section .text.__x86.indirect_thunk
@@ -47,58 +46,3 @@ GENERATE_THUNK(r13)
GENERATE_THUNK(r14)
GENERATE_THUNK(r15)
#endif
-
-/*
- * Fill the CPU return stack buffer.
- *
- * Each entry in the RSB, if used for a speculative 'ret', contains an
- * infinite 'pause; lfence; jmp' loop to capture speculative execution.
- *
- * This is required in various cases for retpoline and IBRS-based
- * mitigations for the Spectre variant 2 vulnerability. Sometimes to
- * eliminate potentially bogus entries from the RSB, and sometimes
- * purely to ensure that it doesn't get empty, which on some CPUs would
- * allow predictions from other (unwanted!) sources to be used.
- *
- * Google experimented with loop-unrolling and this turned out to be
- * the optimal version - two calls, each with their own speculation
- * trap should their return address end up getting used, in a loop.
- */
-.macro STUFF_RSB nr:req sp:req
- mov $(\nr / 2), %_ASM_BX
- .align 16
-771:
- call 772f
-773: /* speculation trap */
- pause
- lfence
- jmp 773b
- .align 16
-772:
- call 774f
-775: /* speculation trap */
- pause
- lfence
- jmp 775b
- .align 16
-774:
- dec %_ASM_BX
- jnz 771b
- add $((BITS_PER_LONG/8) * \nr), \sp
-.endm
-
-#define RSB_FILL_LOOPS 16 /* To avoid underflow */
-
-ENTRY(__fill_rsb)
- STUFF_RSB RSB_FILL_LOOPS, %_ASM_SP
- ret
-END(__fill_rsb)
-EXPORT_SYMBOL_GPL(__fill_rsb)
-
-#define RSB_CLEAR_LOOPS 32 /* To forcibly overwrite all entries */
-
-ENTRY(__clear_rsb)
- STUFF_RSB RSB_CLEAR_LOOPS, %_ASM_SP
- ret
-END(__clear_rsb)
-EXPORT_SYMBOL_GPL(__clear_rsb)
diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c
index 73eb7fd4aec4..5b6c8486a0be 100644
--- a/arch/x86/tools/relocs.c
+++ b/arch/x86/tools/relocs.c
@@ -769,9 +769,12 @@ static int do_reloc64(struct section *sec, Elf_Rel *rel, ElfW(Sym) *sym,
break;

case R_X86_64_PC32:
+ case R_X86_64_PLT32:
/*
* PC relative relocations don't need to be adjusted unless
* referencing a percpu symbol.
+ *
+ * NB: R_X86_64_PLT32 can be treated as R_X86_64_PC32.
*/
if (is_percpu_sym(sym, symname))
add_reloc(&relocs32neg, offset);
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 402254d26247..68bfcef24701 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -263,7 +263,7 @@ static int lo_write_bvec(struct file *file, struct bio_vec *bvec, loff_t *ppos)
struct iov_iter i;
ssize_t bw;

- iov_iter_bvec(&i, ITER_BVEC, bvec, 1, bvec->bv_len);
+ iov_iter_bvec(&i, ITER_BVEC | WRITE, bvec, 1, bvec->bv_len);

file_start_write(file);
bw = vfs_iter_write(file, &i, ppos);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
index 5796539a0bcb..648ecf69bad5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
@@ -540,6 +540,9 @@ int amdgpu_acpi_pcie_performance_request(struct amdgpu_device *adev,
size_t size;
u32 retry = 3;

+ if (amdgpu_acpi_pcie_notify_device_ready(adev))
+ return -EINVAL;
+
/* Get the device handle */
handle = ACPI_HANDLE(&adev->pdev->dev);
if (!handle)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
index 086aa5c9c634..c82b04b24bf9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
@@ -739,9 +739,11 @@ amdgpu_connector_lvds_detect(struct drm_connector *connector, bool force)
enum drm_connector_status ret = connector_status_disconnected;
int r;

- r = pm_runtime_get_sync(connector->dev->dev);
- if (r < 0)
- return connector_status_disconnected;
+ if (!drm_kms_helper_is_poll_worker()) {
+ r = pm_runtime_get_sync(connector->dev->dev);
+ if (r < 0)
+ return connector_status_disconnected;
+ }

if (encoder) {
struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
@@ -760,8 +762,12 @@ amdgpu_connector_lvds_detect(struct drm_connector *connector, bool force)
/* check acpi lid status ??? */

amdgpu_connector_update_scratch_regs(connector, ret);
- pm_runtime_mark_last_busy(connector->dev->dev);
- pm_runtime_put_autosuspend(connector->dev->dev);
+
+ if (!drm_kms_helper_is_poll_worker()) {
+ pm_runtime_mark_last_busy(connector->dev->dev);
+ pm_runtime_put_autosuspend(connector->dev->dev);
+ }
+
return ret;
}

@@ -871,9 +877,11 @@ amdgpu_connector_vga_detect(struct drm_connector *connector, bool force)
enum drm_connector_status ret = connector_status_disconnected;
int r;

- r = pm_runtime_get_sync(connector->dev->dev);
- if (r < 0)
- return connector_status_disconnected;
+ if (!drm_kms_helper_is_poll_worker()) {
+ r = pm_runtime_get_sync(connector->dev->dev);
+ if (r < 0)
+ return connector_status_disconnected;
+ }

encoder = amdgpu_connector_best_single_encoder(connector);
if (!encoder)
@@ -927,8 +935,10 @@ amdgpu_connector_vga_detect(struct drm_connector *connector, bool force)
amdgpu_connector_update_scratch_regs(connector, ret);

out:
- pm_runtime_mark_last_busy(connector->dev->dev);
- pm_runtime_put_autosuspend(connector->dev->dev);
+ if (!drm_kms_helper_is_poll_worker()) {
+ pm_runtime_mark_last_busy(connector->dev->dev);
+ pm_runtime_put_autosuspend(connector->dev->dev);
+ }

return ret;
}
@@ -991,9 +1001,11 @@ amdgpu_connector_dvi_detect(struct drm_connector *connector, bool force)
enum drm_connector_status ret = connector_status_disconnected;
bool dret = false, broken_edid = false;

- r = pm_runtime_get_sync(connector->dev->dev);
- if (r < 0)
- return connector_status_disconnected;
+ if (!drm_kms_helper_is_poll_worker()) {
+ r = pm_runtime_get_sync(connector->dev->dev);
+ if (r < 0)
+ return connector_status_disconnected;
+ }

if (!force && amdgpu_connector_check_hpd_status_unchanged(connector)) {
ret = connector->status;
@@ -1118,8 +1130,10 @@ amdgpu_connector_dvi_detect(struct drm_connector *connector, bool force)
amdgpu_connector_update_scratch_regs(connector, ret);

exit:
- pm_runtime_mark_last_busy(connector->dev->dev);
- pm_runtime_put_autosuspend(connector->dev->dev);
+ if (!drm_kms_helper_is_poll_worker()) {
+ pm_runtime_mark_last_busy(connector->dev->dev);
+ pm_runtime_put_autosuspend(connector->dev->dev);
+ }

return ret;
}
@@ -1362,9 +1376,11 @@ amdgpu_connector_dp_detect(struct drm_connector *connector, bool force)
struct drm_encoder *encoder = amdgpu_connector_best_single_encoder(connector);
int r;

- r = pm_runtime_get_sync(connector->dev->dev);
- if (r < 0)
- return connector_status_disconnected;
+ if (!drm_kms_helper_is_poll_worker()) {
+ r = pm_runtime_get_sync(connector->dev->dev);
+ if (r < 0)
+ return connector_status_disconnected;
+ }

if (!force && amdgpu_connector_check_hpd_status_unchanged(connector)) {
ret = connector->status;
@@ -1432,8 +1448,10 @@ amdgpu_connector_dp_detect(struct drm_connector *connector, bool force)

amdgpu_connector_update_scratch_regs(connector, ret);
out:
- pm_runtime_mark_last_busy(connector->dev->dev);
- pm_runtime_put_autosuspend(connector->dev->dev);
+ if (!drm_kms_helper_is_poll_worker()) {
+ pm_runtime_mark_last_busy(connector->dev->dev);
+ pm_runtime_put_autosuspend(connector->dev->dev);
+ }

return ret;
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
index e3281cacc586..5caf517eec9f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
@@ -273,12 +273,15 @@ int amdgpu_uvd_suspend(struct amdgpu_device *adev)
if (adev->uvd.vcpu_bo == NULL)
return 0;

- for (i = 0; i < adev->uvd.max_handles; ++i)
- if (atomic_read(&adev->uvd.handles[i]))
- break;
+ /* only valid for physical mode */
+ if (adev->asic_type < CHIP_POLARIS10) {
+ for (i = 0; i < adev->uvd.max_handles; ++i)
+ if (atomic_read(&adev->uvd.handles[i]))
+ break;

- if (i == AMDGPU_MAX_UVD_HANDLES)
- return 0;
+ if (i == adev->uvd.max_handles)
+ return 0;
+ }

cancel_delayed_work_sync(&adev->uvd.idle_work);

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
index 71116da9e782..e040a896179c 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
@@ -4475,34 +4475,8 @@ static void gfx_v7_0_gpu_early_init(struct amdgpu_device *adev)
case CHIP_KAVERI:
adev->gfx.config.max_shader_engines = 1;
adev->gfx.config.max_tile_pipes = 4;
- if ((adev->pdev->device == 0x1304) ||
- (adev->pdev->device == 0x1305) ||
- (adev->pdev->device == 0x130C) ||
- (adev->pdev->device == 0x130F) ||
- (adev->pdev->device == 0x1310) ||
- (adev->pdev->device == 0x1311) ||
- (adev->pdev->device == 0x131C)) {
- adev->gfx.config.max_cu_per_sh = 8;
- adev->gfx.config.max_backends_per_se = 2;
- } else if ((adev->pdev->device == 0x1309) ||
- (adev->pdev->device == 0x130A) ||
- (adev->pdev->device == 0x130D) ||
- (adev->pdev->device == 0x1313) ||
- (adev->pdev->device == 0x131D)) {
- adev->gfx.config.max_cu_per_sh = 6;
- adev->gfx.config.max_backends_per_se = 2;
- } else if ((adev->pdev->device == 0x1306) ||
- (adev->pdev->device == 0x1307) ||
- (adev->pdev->device == 0x130B) ||
- (adev->pdev->device == 0x130E) ||
- (adev->pdev->device == 0x1315) ||
- (adev->pdev->device == 0x131B)) {
- adev->gfx.config.max_cu_per_sh = 4;
- adev->gfx.config.max_backends_per_se = 1;
- } else {
- adev->gfx.config.max_cu_per_sh = 3;
- adev->gfx.config.max_backends_per_se = 1;
- }
+ adev->gfx.config.max_cu_per_sh = 8;
+ adev->gfx.config.max_backends_per_se = 2;
adev->gfx.config.max_sh_per_se = 1;
adev->gfx.config.max_texture_channel_caches = 4;
adev->gfx.config.max_gprs = 256;
diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c
index 276474d13763..d7822bef1986 100644
--- a/drivers/gpu/drm/drm_probe_helper.c
+++ b/drivers/gpu/drm/drm_probe_helper.c
@@ -460,6 +460,26 @@ static void output_poll_execute(struct work_struct *work)
schedule_delayed_work(delayed_work, DRM_OUTPUT_POLL_PERIOD);
}

+/**
+ * drm_kms_helper_is_poll_worker - is %current task an output poll worker?
+ *
+ * Determine if %current task is an output poll worker. This can be used
+ * to select distinct code paths for output polling versus other contexts.
+ *
+ * One use case is to avoid a deadlock between the output poll worker and
+ * the autosuspend worker wherein the latter waits for polling to finish
+ * upon calling drm_kms_helper_poll_disable(), while the former waits for
+ * runtime suspend to finish upon calling pm_runtime_get_sync() in a
+ * connector ->detect hook.
+ */
+bool drm_kms_helper_is_poll_worker(void)
+{
+ struct work_struct *work = current_work();
+
+ return work && work->func == output_poll_execute;
+}
+EXPORT_SYMBOL(drm_kms_helper_is_poll_worker);
+
/**
* drm_kms_helper_poll_disable - disable output polling
* @dev: drm_device
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 7513e7678263..bae62cf934cf 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -1703,6 +1703,8 @@ static int i915_drm_resume_early(struct drm_device *dev)
if (IS_BROXTON(dev_priv) ||
!(dev_priv->suspended_to_idle && dev_priv->csr.dmc_payload))
intel_power_domains_init_hw(dev_priv, true);
+ else
+ intel_display_set_init_power(dev_priv, true);

enable_rpm_wakeref_asserts(dev_priv);

diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 13c306173f27..0c935dede9f4 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -1452,12 +1452,20 @@ intel_hdmi_set_edid(struct drm_connector *connector)
struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
struct edid *edid;
bool connected = false;
+ struct i2c_adapter *i2c;

intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS);

- edid = drm_get_edid(connector,
- intel_gmbus_get_adapter(dev_priv,
- intel_hdmi->ddc_bus));
+ i2c = intel_gmbus_get_adapter(dev_priv, intel_hdmi->ddc_bus);
+
+ edid = drm_get_edid(connector, i2c);
+
+ if (!edid && !intel_gmbus_is_forced_bit(i2c)) {
+ DRM_DEBUG_KMS("HDMI GMBUS EDID read failed, retry using GPIO bit-banging\n");
+ intel_gmbus_force_bit(i2c, true);
+ edid = drm_get_edid(connector, i2c);
+ intel_gmbus_force_bit(i2c, false);
+ }

intel_hdmi_dp_dual_mode_detect(connector, edid != NULL);

diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
index c1084088f9e4..56c288f78d8a 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -271,9 +271,15 @@ nouveau_connector_detect(struct drm_connector *connector, bool force)
nv_connector->edid = NULL;
}

- ret = pm_runtime_get_sync(connector->dev->dev);
- if (ret < 0 && ret != -EACCES)
- return conn_status;
+ /* Outputs are only polled while runtime active, so acquiring a
+ * runtime PM ref here is unnecessary (and would deadlock upon
+ * runtime suspend because it waits for polling to finish).
+ */
+ if (!drm_kms_helper_is_poll_worker()) {
+ ret = pm_runtime_get_sync(connector->dev->dev);
+ if (ret < 0 && ret != -EACCES)
+ return conn_status;
+ }

nv_encoder = nouveau_connector_ddc_detect(connector);
if (nv_encoder && (i2c = nv_encoder->i2c) != NULL) {
@@ -348,8 +354,10 @@ nouveau_connector_detect(struct drm_connector *connector, bool force)

out:

- pm_runtime_mark_last_busy(connector->dev->dev);
- pm_runtime_put_autosuspend(connector->dev->dev);
+ if (!drm_kms_helper_is_poll_worker()) {
+ pm_runtime_mark_last_busy(connector->dev->dev);
+ pm_runtime_put_autosuspend(connector->dev->dev);
+ }

return conn_status;
}
diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index edee6a5f4da9..b99f3e59011c 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -3244,35 +3244,8 @@ static void cik_gpu_init(struct radeon_device *rdev)
case CHIP_KAVERI:
rdev->config.cik.max_shader_engines = 1;
rdev->config.cik.max_tile_pipes = 4;
- if ((rdev->pdev->device == 0x1304) ||
- (rdev->pdev->device == 0x1305) ||
- (rdev->pdev->device == 0x130C) ||
- (rdev->pdev->device == 0x130F) ||
- (rdev->pdev->device == 0x1310) ||
- (rdev->pdev->device == 0x1311) ||
- (rdev->pdev->device == 0x131C)) {
- rdev->config.cik.max_cu_per_sh = 8;
- rdev->config.cik.max_backends_per_se = 2;
- } else if ((rdev->pdev->device == 0x1309) ||
- (rdev->pdev->device == 0x130A) ||
- (rdev->pdev->device == 0x130D) ||
- (rdev->pdev->device == 0x1313) ||
- (rdev->pdev->device == 0x131D)) {
- rdev->config.cik.max_cu_per_sh = 6;
- rdev->config.cik.max_backends_per_se = 2;
- } else if ((rdev->pdev->device == 0x1306) ||
- (rdev->pdev->device == 0x1307) ||
- (rdev->pdev->device == 0x130B) ||
- (rdev->pdev->device == 0x130E) ||
- (rdev->pdev->device == 0x1315) ||
- (rdev->pdev->device == 0x1318) ||
- (rdev->pdev->device == 0x131B)) {
- rdev->config.cik.max_cu_per_sh = 4;
- rdev->config.cik.max_backends_per_se = 1;
- } else {
- rdev->config.cik.max_cu_per_sh = 3;
- rdev->config.cik.max_backends_per_se = 1;
- }
+ rdev->config.cik.max_cu_per_sh = 8;
+ rdev->config.cik.max_backends_per_se = 2;
rdev->config.cik.max_sh_per_se = 1;
rdev->config.cik.max_texture_channel_caches = 4;
rdev->config.cik.max_gprs = 256;
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index 27affbde058c..af0d7fd5706b 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -897,9 +897,11 @@ radeon_lvds_detect(struct drm_connector *connector, bool force)
enum drm_connector_status ret = connector_status_disconnected;
int r;

- r = pm_runtime_get_sync(connector->dev->dev);
- if (r < 0)
- return connector_status_disconnected;
+ if (!drm_kms_helper_is_poll_worker()) {
+ r = pm_runtime_get_sync(connector->dev->dev);
+ if (r < 0)
+ return connector_status_disconnected;
+ }

if (encoder) {
struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
@@ -922,8 +924,12 @@ radeon_lvds_detect(struct drm_connector *connector, bool force)
/* check acpi lid status ??? */

radeon_connector_update_scratch_regs(connector, ret);
- pm_runtime_mark_last_busy(connector->dev->dev);
- pm_runtime_put_autosuspend(connector->dev->dev);
+
+ if (!drm_kms_helper_is_poll_worker()) {
+ pm_runtime_mark_last_busy(connector->dev->dev);
+ pm_runtime_put_autosuspend(connector->dev->dev);
+ }
+
return ret;
}

@@ -1037,9 +1043,11 @@ radeon_vga_detect(struct drm_connector *connector, bool force)
enum drm_connector_status ret = connector_status_disconnected;
int r;

- r = pm_runtime_get_sync(connector->dev->dev);
- if (r < 0)
- return connector_status_disconnected;
+ if (!drm_kms_helper_is_poll_worker()) {
+ r = pm_runtime_get_sync(connector->dev->dev);
+ if (r < 0)
+ return connector_status_disconnected;
+ }

encoder = radeon_best_single_encoder(connector);
if (!encoder)
@@ -1106,8 +1114,10 @@ radeon_vga_detect(struct drm_connector *connector, bool force)
radeon_connector_update_scratch_regs(connector, ret);

out:
- pm_runtime_mark_last_busy(connector->dev->dev);
- pm_runtime_put_autosuspend(connector->dev->dev);
+ if (!drm_kms_helper_is_poll_worker()) {
+ pm_runtime_mark_last_busy(connector->dev->dev);
+ pm_runtime_put_autosuspend(connector->dev->dev);
+ }

return ret;
}
@@ -1171,9 +1181,11 @@ radeon_tv_detect(struct drm_connector *connector, bool force)
if (!radeon_connector->dac_load_detect)
return ret;

- r = pm_runtime_get_sync(connector->dev->dev);
- if (r < 0)
- return connector_status_disconnected;
+ if (!drm_kms_helper_is_poll_worker()) {
+ r = pm_runtime_get_sync(connector->dev->dev);
+ if (r < 0)
+ return connector_status_disconnected;
+ }

encoder = radeon_best_single_encoder(connector);
if (!encoder)
@@ -1185,8 +1197,12 @@ radeon_tv_detect(struct drm_connector *connector, bool force)
if (ret == connector_status_connected)
ret = radeon_connector_analog_encoder_conflict_solve(connector, encoder, ret, false);
radeon_connector_update_scratch_regs(connector, ret);
- pm_runtime_mark_last_busy(connector->dev->dev);
- pm_runtime_put_autosuspend(connector->dev->dev);
+
+ if (!drm_kms_helper_is_poll_worker()) {
+ pm_runtime_mark_last_busy(connector->dev->dev);
+ pm_runtime_put_autosuspend(connector->dev->dev);
+ }
+
return ret;
}

@@ -1249,9 +1265,11 @@ radeon_dvi_detect(struct drm_connector *connector, bool force)
enum drm_connector_status ret = connector_status_disconnected;
bool dret = false, broken_edid = false;

- r = pm_runtime_get_sync(connector->dev->dev);
- if (r < 0)
- return connector_status_disconnected;
+ if (!drm_kms_helper_is_poll_worker()) {
+ r = pm_runtime_get_sync(connector->dev->dev);
+ if (r < 0)
+ return connector_status_disconnected;
+ }

if (radeon_connector->detected_hpd_without_ddc) {
force = true;
@@ -1434,8 +1452,10 @@ radeon_dvi_detect(struct drm_connector *connector, bool force)
}

exit:
- pm_runtime_mark_last_busy(connector->dev->dev);
- pm_runtime_put_autosuspend(connector->dev->dev);
+ if (!drm_kms_helper_is_poll_worker()) {
+ pm_runtime_mark_last_busy(connector->dev->dev);
+ pm_runtime_put_autosuspend(connector->dev->dev);
+ }

return ret;
}
@@ -1686,9 +1706,11 @@ radeon_dp_detect(struct drm_connector *connector, bool force)
if (radeon_dig_connector->is_mst)
return connector_status_disconnected;

- r = pm_runtime_get_sync(connector->dev->dev);
- if (r < 0)
- return connector_status_disconnected;
+ if (!drm_kms_helper_is_poll_worker()) {
+ r = pm_runtime_get_sync(connector->dev->dev);
+ if (r < 0)
+ return connector_status_disconnected;
+ }

if (!force && radeon_check_hpd_status_unchanged(connector)) {
ret = connector->status;
@@ -1775,8 +1797,10 @@ radeon_dp_detect(struct drm_connector *connector, bool force)
}

out:
- pm_runtime_mark_last_busy(connector->dev->dev);
- pm_runtime_put_autosuspend(connector->dev->dev);
+ if (!drm_kms_helper_is_poll_worker()) {
+ pm_runtime_mark_last_busy(connector->dev->dev);
+ pm_runtime_put_autosuspend(connector->dev->dev);
+ }

return ret;
}
diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
index 9520154f1d7c..6840d3c5cd64 100644
--- a/drivers/infiniband/core/ucma.c
+++ b/drivers/infiniband/core/ucma.c
@@ -1139,6 +1139,9 @@ static ssize_t ucma_init_qp_attr(struct ucma_file *file,
if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
return -EFAULT;

+ if (cmd.qp_state > IB_QPS_ERR)
+ return -EINVAL;
+
ctx = ucma_get_ctx(file, cmd.id);
if (IS_ERR(ctx))
return PTR_ERR(ctx);
@@ -1275,6 +1278,9 @@ static ssize_t ucma_set_option(struct ucma_file *file, const char __user *inbuf,
if (IS_ERR(ctx))
return PTR_ERR(ctx);

+ if (unlikely(cmd.optval > KMALLOC_MAX_SIZE))
+ return -EINVAL;
+
optval = memdup_user((void __user *) (unsigned long) cmd.optval,
cmd.optlen);
if (IS_ERR(optval)) {
diff --git a/drivers/infiniband/hw/mlx5/cq.c b/drivers/infiniband/hw/mlx5/cq.c
index fcd04b881ec1..9cdcff77b9a8 100644
--- a/drivers/infiniband/hw/mlx5/cq.c
+++ b/drivers/infiniband/hw/mlx5/cq.c
@@ -1117,7 +1117,12 @@ static int resize_user(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq,
if (ucmd.reserved0 || ucmd.reserved1)
return -EINVAL;

- umem = ib_umem_get(context, ucmd.buf_addr, entries * ucmd.cqe_size,
+ /* check multiplication overflow */
+ if (ucmd.cqe_size && SIZE_MAX / ucmd.cqe_size <= entries - 1)
+ return -EINVAL;
+
+ umem = ib_umem_get(context, ucmd.buf_addr,
+ (size_t)ucmd.cqe_size * entries,
IB_ACCESS_LOCAL_WRITE, 1);
if (IS_ERR(umem)) {
err = PTR_ERR(umem);
diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
index c7d5786d366b..7e466f031e30 100644
--- a/drivers/infiniband/hw/mlx5/mr.c
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -1821,7 +1821,6 @@ mlx5_ib_sg_to_klms(struct mlx5_ib_mr *mr,

mr->ibmr.iova = sg_dma_address(sg) + sg_offset;
mr->ibmr.length = 0;
- mr->ndescs = sg_nents;

for_each_sg(sgl, sg, sg_nents, i) {
if (unlikely(i >= mr->max_descs))
@@ -1833,6 +1832,7 @@ mlx5_ib_sg_to_klms(struct mlx5_ib_mr *mr,

sg_offset = 0;
}
+ mr->ndescs = i;

if (sg_offset_p)
*sg_offset_p = sg_offset;
diff --git a/drivers/input/keyboard/matrix_keypad.c b/drivers/input/keyboard/matrix_keypad.c
index 7f12b6579f82..795fa353de7c 100644
--- a/drivers/input/keyboard/matrix_keypad.c
+++ b/drivers/input/keyboard/matrix_keypad.c
@@ -216,8 +216,10 @@ static void matrix_keypad_stop(struct input_dev *dev)
{
struct matrix_keypad *keypad = input_get_drvdata(dev);

+ spin_lock_irq(&keypad->lock);
keypad->stopped = true;
- mb();
+ spin_unlock_irq(&keypad->lock);
+
flush_work(&keypad->work.work);
/*
* matrix_keypad_scan() will leave IRQs enabled;
diff --git a/drivers/input/keyboard/tca8418_keypad.c b/drivers/input/keyboard/tca8418_keypad.c
index 3048ef3e3e16..a5e8998047fe 100644
--- a/drivers/input/keyboard/tca8418_keypad.c
+++ b/drivers/input/keyboard/tca8418_keypad.c
@@ -189,8 +189,6 @@ static void tca8418_read_keypad(struct tca8418_keypad *keypad_data)
input_event(input, EV_MSC, MSC_SCAN, code);
input_report_key(input, keymap[code], state);

- /* Read for next loop */
- error = tca8418_read_byte(keypad_data, REG_KEY_EVENT_A, &reg);
} while (1);

input_sync(input);
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index 28ce342348a9..c61341c84d2d 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -937,6 +937,7 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c)
uint32_t rtime = cpu_to_le32(get_seconds());
struct uuid_entry *u;
char buf[BDEVNAME_SIZE];
+ struct cached_dev *exist_dc, *t;

bdevname(dc->bdev, buf);

@@ -960,6 +961,16 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c)
return -EINVAL;
}

+ /* Check whether already attached */
+ list_for_each_entry_safe(exist_dc, t, &c->cached_devs, list) {
+ if (!memcmp(dc->sb.uuid, exist_dc->sb.uuid, 16)) {
+ pr_err("Tried to attach %s but duplicate UUID already attached",
+ buf);
+
+ return -EINVAL;
+ }
+ }
+
u = uuid_find(c, dc->sb.uuid);

if (u &&
@@ -1182,7 +1193,7 @@ static void register_bdev(struct cache_sb *sb, struct page *sb_page,

return;
err:
- pr_notice("error opening %s: %s", bdevname(bdev, name), err);
+ pr_notice("error %s: %s", bdevname(bdev, name), err);
bcache_device_stop(&dc->disk);
}

@@ -1853,6 +1864,8 @@ static int register_cache(struct cache_sb *sb, struct page *sb_page,
const char *err = NULL; /* must be set for any error case */
int ret = 0;

+ bdevname(bdev, name);
+
memcpy(&ca->sb, sb, sizeof(struct cache_sb));
ca->bdev = bdev;
ca->bdev->bd_holder = ca;
@@ -1863,11 +1876,12 @@ static int register_cache(struct cache_sb *sb, struct page *sb_page,
ca->sb_bio.bi_io_vec[0].bv_page = sb_page;
get_page(sb_page);

- if (blk_queue_discard(bdev_get_queue(ca->bdev)))
+ if (blk_queue_discard(bdev_get_queue(bdev)))
ca->discard = CACHE_DISCARD(&ca->sb);

ret = cache_alloc(ca);
if (ret != 0) {
+ blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
if (ret == -ENOMEM)
err = "cache_alloc(): -ENOMEM";
else
@@ -1890,14 +1904,14 @@ static int register_cache(struct cache_sb *sb, struct page *sb_page,
goto out;
}

- pr_info("registered cache device %s", bdevname(bdev, name));
+ pr_info("registered cache device %s", name);

out:
kobject_put(&ca->kobj);

err:
if (err)
- pr_notice("error opening %s: %s", bdevname(bdev, name), err);
+ pr_notice("error %s: %s", name, err);

return ret;
}
@@ -1986,6 +2000,7 @@ static ssize_t register_bcache(struct kobject *k, struct kobj_attribute *attr,
if (err)
goto err_close;

+ err = "failed to register device";
if (SB_IS_BDEV(sb)) {
struct cached_dev *dc = kzalloc(sizeof(*dc), GFP_KERNEL);
if (!dc)
@@ -2000,7 +2015,7 @@ static ssize_t register_bcache(struct kobject *k, struct kobj_attribute *attr,
goto err_close;

if (register_cache(sb, sb_page, bdev, ca) != 0)
- goto err_close;
+ goto err;
}
out:
if (sb_page)
@@ -2013,7 +2028,7 @@ static ssize_t register_bcache(struct kobject *k, struct kobj_attribute *attr,
err_close:
blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
err:
- pr_info("error opening %s: %s", path, err);
+ pr_info("error %s: %s", path, err);
ret = -EINVAL;
goto out;
}
diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c
index 26d999c812c9..0f572bff64f5 100644
--- a/drivers/media/i2c/tc358743.c
+++ b/drivers/media/i2c/tc358743.c
@@ -222,7 +222,7 @@ static void i2c_wr8(struct v4l2_subdev *sd, u16 reg, u8 val)
static void i2c_wr8_and_or(struct v4l2_subdev *sd, u16 reg,
u8 mask, u8 val)
{
- i2c_wrreg(sd, reg, (i2c_rdreg(sd, reg, 2) & mask) | val, 2);
+ i2c_wrreg(sd, reg, (i2c_rdreg(sd, reg, 1) & mask) | val, 1);
}

static u16 i2c_rd16(struct v4l2_subdev *sd, u16 reg)
diff --git a/drivers/mtd/ubi/vmt.c b/drivers/mtd/ubi/vmt.c
index 7ac78c13dd1c..1bcb25bc35ef 100644
--- a/drivers/mtd/ubi/vmt.c
+++ b/drivers/mtd/ubi/vmt.c
@@ -265,6 +265,12 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
vol->last_eb_bytes = vol->usable_leb_size;
}

+ /* Make volume "available" before it becomes accessible via sysfs */
+ spin_lock(&ubi->volumes_lock);
+ ubi->volumes[vol_id] = vol;
+ ubi->vol_count += 1;
+ spin_unlock(&ubi->volumes_lock);
+
/* Register character device for the volume */
cdev_init(&vol->cdev, &ubi_vol_cdev_operations);
vol->cdev.owner = THIS_MODULE;
@@ -304,11 +310,6 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
if (err)
goto out_sysfs;

- spin_lock(&ubi->volumes_lock);
- ubi->volumes[vol_id] = vol;
- ubi->vol_count += 1;
- spin_unlock(&ubi->volumes_lock);
-
ubi_volume_notify(ubi, vol, UBI_VOLUME_ADDED);
self_check_volumes(ubi);
return err;
@@ -328,6 +329,10 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
out_cdev:
cdev_del(&vol->cdev);
out_mapping:
+ spin_lock(&ubi->volumes_lock);
+ ubi->volumes[vol_id] = NULL;
+ ubi->vol_count -= 1;
+ spin_unlock(&ubi->volumes_lock);
if (do_free)
ubi_eba_destroy_table(eba_tbl);
out_acc:
diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c
index af8f6e92e885..b3a87159e457 100644
--- a/drivers/pci/host/pcie-designware.c
+++ b/drivers/pci/host/pcie-designware.c
@@ -861,7 +861,7 @@ void dw_pcie_setup_rc(struct pcie_port *pp)
/* setup bus numbers */
val = dw_pcie_readl_rc(pp, PCI_PRIMARY_BUS);
val &= 0xff000000;
- val |= 0x00010100;
+ val |= 0x00ff0100;
dw_pcie_writel_rc(pp, PCI_PRIMARY_BUS, val);

/* setup command register */
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 8f12f6baa6b8..4441a559f139 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -369,6 +369,7 @@ qla24xx_abort_sp_done(void *data, void *ptr, int res)
srb_t *sp = (srb_t *)ptr;
struct srb_iocb *abt = &sp->u.iocb_cmd;

+ del_timer(&sp->u.iocb_cmd.timer);
complete(&abt->u.abt.comp);
}

diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 59059ffbb98c..11f45cb99892 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -5789,7 +5789,7 @@ static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
fc_port_t *fcport;
int rc;

- fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
+ fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
if (!fcport) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f,
"qla_target(%d): Allocation of tmp FC port failed",
diff --git a/drivers/staging/android/ashmem.c b/drivers/staging/android/ashmem.c
index d08324998933..db100154f85c 100644
--- a/drivers/staging/android/ashmem.c
+++ b/drivers/staging/android/ashmem.c
@@ -343,24 +343,23 @@ static loff_t ashmem_llseek(struct file *file, loff_t offset, int origin)
mutex_lock(&ashmem_mutex);

if (asma->size == 0) {
- ret = -EINVAL;
- goto out;
+ mutex_unlock(&ashmem_mutex);
+ return -EINVAL;
}

if (!asma->file) {
- ret = -EBADF;
- goto out;
+ mutex_unlock(&ashmem_mutex);
+ return -EBADF;
}

+ mutex_unlock(&ashmem_mutex);
+
ret = vfs_llseek(asma->file, offset, origin);
if (ret < 0)
- goto out;
+ return ret;

/** Copy f_pos from backing file, since f_ops->llseek() sets it */
file->f_pos = asma->file->f_pos;
-
-out:
- mutex_unlock(&ashmem_mutex);
return ret;
}

diff --git a/drivers/staging/comedi/drivers.c b/drivers/staging/comedi/drivers.c
index a5bf2cc165c0..1736248bc5b8 100644
--- a/drivers/staging/comedi/drivers.c
+++ b/drivers/staging/comedi/drivers.c
@@ -484,8 +484,7 @@ unsigned int comedi_nsamples_left(struct comedi_subdevice *s,
struct comedi_cmd *cmd = &async->cmd;

if (cmd->stop_src == TRIG_COUNT) {
- unsigned int nscans = nsamples / cmd->scan_end_arg;
- unsigned int scans_left = __comedi_nscans_left(s, nscans);
+ unsigned int scans_left = __comedi_nscans_left(s, cmd->stop_arg);
unsigned int scan_pos =
comedi_bytes_to_samples(s, async->scan_progress);
unsigned long long samples_left = 0;
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index b80ea872b039..e82b3473b6b8 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -5099,6 +5099,17 @@ static struct pci_device_id serial_pci_tbl[] = {
{ PCI_VENDOR_ID_INTASHIELD, PCI_DEVICE_ID_INTASHIELD_IS400,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, /* 135a.0dc0 */
pbn_b2_4_115200 },
+ /*
+ * BrainBoxes UC-260
+ */
+ { PCI_VENDOR_ID_INTASHIELD, 0x0D21,
+ PCI_ANY_ID, PCI_ANY_ID,
+ PCI_CLASS_COMMUNICATION_MULTISERIAL << 8, 0xffff00,
+ pbn_b2_4_115200 },
+ { PCI_VENDOR_ID_INTASHIELD, 0x0E34,
+ PCI_ANY_ID, PCI_ANY_ID,
+ PCI_CLASS_COMMUNICATION_MULTISERIAL << 8, 0xffff00,
+ pbn_b2_4_115200 },
/*
* Perle PCI-RAS cards
*/
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index 4d079cdaa7a3..addb287cacea 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -1780,6 +1780,7 @@ static void atmel_get_ip_name(struct uart_port *port)
switch (version) {
case 0x302:
case 0x10213:
+ case 0x10302:
dev_dbg(port->dev, "This version is usart\n");
atmel_port->has_frac_baudrate = true;
atmel_port->has_hw_timer = true;
diff --git a/drivers/tty/serial/earlycon.c b/drivers/tty/serial/earlycon.c
index c3651540e1ba..3b31fd8863eb 100644
--- a/drivers/tty/serial/earlycon.c
+++ b/drivers/tty/serial/earlycon.c
@@ -253,11 +253,12 @@ int __init of_setup_earlycon(const struct earlycon_id *match,
}
port->mapbase = addr;
port->uartclk = BASE_BAUD * 16;
- port->membase = earlycon_map(port->mapbase, SZ_4K);

val = of_get_flat_dt_prop(node, "reg-offset", NULL);
if (val)
port->mapbase += be32_to_cpu(*val);
+ port->membase = earlycon_map(port->mapbase, SZ_4K);
+
val = of_get_flat_dt_prop(node, "reg-shift", NULL);
if (val)
port->regshift = be32_to_cpu(*val);
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 23973a8124fc..6cbd46c565f8 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -1135,6 +1135,8 @@ static int uart_do_autoconfig(struct tty_struct *tty,struct uart_state *state)
uport->ops->config_port(uport, flags);

ret = uart_startup(tty, state, 1);
+ if (ret == 0)
+ tty_port_set_initialized(port, true);
if (ret > 0)
ret = 0;
}
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 15eaea53b3df..a55c94dfefd2 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -935,6 +935,8 @@ static void sci_receive_chars(struct uart_port *port)
/* Tell the rest of the system the news. New characters! */
tty_flip_buffer_push(tport);
} else {
+ /* TTY buffers full; read from RX reg to prevent lockup */
+ serial_port_in(port, SCxRDR);
serial_port_in(port, SCxSR); /* dummy read */
sci_clear_SCxSR(port, SCxSR_RDxF_CLEAR(port));
}
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index 4c388451f31f..9cb66475c211 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -148,6 +148,10 @@ int usb_control_msg(struct usb_device *dev, unsigned int pipe, __u8 request,

ret = usb_internal_control_msg(dev, pipe, dr, data, size, timeout);

+ /* Linger a bit, prior to the next control message. */
+ if (dev->quirks & USB_QUIRK_DELAY_CTRL_MSG)
+ msleep(200);
+
kfree(dr);

return ret;
diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index 774c97bb1c08..4f1c6f8d4352 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -229,7 +229,8 @@ static const struct usb_device_id usb_quirk_list[] = {
{ USB_DEVICE(0x1b1c, 0x1b13), .driver_info = USB_QUIRK_DELAY_INIT },

/* Corsair Strafe RGB */
- { USB_DEVICE(0x1b1c, 0x1b20), .driver_info = USB_QUIRK_DELAY_INIT },
+ { USB_DEVICE(0x1b1c, 0x1b20), .driver_info = USB_QUIRK_DELAY_INIT |
+ USB_QUIRK_DELAY_CTRL_MSG },

/* Corsair K70 LUX */
{ USB_DEVICE(0x1b1c, 0x1b36), .driver_info = USB_QUIRK_DELAY_INIT },
diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index 48f52138bb1a..071346973dd6 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -1522,7 +1522,6 @@ ffs_fs_kill_sb(struct super_block *sb)
if (sb->s_fs_info) {
ffs_release_dev(sb->s_fs_info);
ffs_data_closed(sb->s_fs_info);
- ffs_data_put(sb->s_fs_info);
}
}

diff --git a/drivers/usb/mon/mon_text.c b/drivers/usb/mon/mon_text.c
index e59334b09c41..f8ac59e0158d 100644
--- a/drivers/usb/mon/mon_text.c
+++ b/drivers/usb/mon/mon_text.c
@@ -83,6 +83,8 @@ struct mon_reader_text {

wait_queue_head_t wait;
int printf_size;
+ size_t printf_offset;
+ size_t printf_togo;
char *printf_buf;
struct mutex printf_lock;

@@ -374,75 +376,103 @@ static int mon_text_open(struct inode *inode, struct file *file)
return rc;
}

-/*
- * For simplicity, we read one record in one system call and throw out
- * what does not fit. This means that the following does not work:
- * dd if=/dbg/usbmon/0t bs=10
- * Also, we do not allow seeks and do not bother advancing the offset.
- */
+static ssize_t mon_text_copy_to_user(struct mon_reader_text *rp,
+ char __user * const buf, const size_t nbytes)
+{
+ const size_t togo = min(nbytes, rp->printf_togo);
+
+ if (copy_to_user(buf, &rp->printf_buf[rp->printf_offset], togo))
+ return -EFAULT;
+ rp->printf_togo -= togo;
+ rp->printf_offset += togo;
+ return togo;
+}
+
+/* ppos is not advanced since the llseek operation is not permitted. */
static ssize_t mon_text_read_t(struct file *file, char __user *buf,
- size_t nbytes, loff_t *ppos)
+ size_t nbytes, loff_t *ppos)
{
struct mon_reader_text *rp = file->private_data;
struct mon_event_text *ep;
struct mon_text_ptr ptr;
+ ssize_t ret;

- ep = mon_text_read_wait(rp, file);
- if (IS_ERR(ep))
- return PTR_ERR(ep);
mutex_lock(&rp->printf_lock);
- ptr.cnt = 0;
- ptr.pbuf = rp->printf_buf;
- ptr.limit = rp->printf_size;
-
- mon_text_read_head_t(rp, &ptr, ep);
- mon_text_read_statset(rp, &ptr, ep);
- ptr.cnt += snprintf(ptr.pbuf + ptr.cnt, ptr.limit - ptr.cnt,
- " %d", ep->length);
- mon_text_read_data(rp, &ptr, ep);
-
- if (copy_to_user(buf, rp->printf_buf, ptr.cnt))
- ptr.cnt = -EFAULT;
+
+ if (rp->printf_togo == 0) {
+
+ ep = mon_text_read_wait(rp, file);
+ if (IS_ERR(ep)) {
+ mutex_unlock(&rp->printf_lock);
+ return PTR_ERR(ep);
+ }
+ ptr.cnt = 0;
+ ptr.pbuf = rp->printf_buf;
+ ptr.limit = rp->printf_size;
+
+ mon_text_read_head_t(rp, &ptr, ep);
+ mon_text_read_statset(rp, &ptr, ep);
+ ptr.cnt += snprintf(ptr.pbuf + ptr.cnt, ptr.limit - ptr.cnt,
+ " %d", ep->length);
+ mon_text_read_data(rp, &ptr, ep);
+
+ rp->printf_togo = ptr.cnt;
+ rp->printf_offset = 0;
+
+ kmem_cache_free(rp->e_slab, ep);
+ }
+
+ ret = mon_text_copy_to_user(rp, buf, nbytes);
mutex_unlock(&rp->printf_lock);
- kmem_cache_free(rp->e_slab, ep);
- return ptr.cnt;
+ return ret;
}

+/* ppos is not advanced since the llseek operation is not permitted. */
static ssize_t mon_text_read_u(struct file *file, char __user *buf,
- size_t nbytes, loff_t *ppos)
+ size_t nbytes, loff_t *ppos)
{
struct mon_reader_text *rp = file->private_data;
struct mon_event_text *ep;
struct mon_text_ptr ptr;
+ ssize_t ret;

- ep = mon_text_read_wait(rp, file);
- if (IS_ERR(ep))
- return PTR_ERR(ep);
mutex_lock(&rp->printf_lock);
- ptr.cnt = 0;
- ptr.pbuf = rp->printf_buf;
- ptr.limit = rp->printf_size;

- mon_text_read_head_u(rp, &ptr, ep);
- if (ep->type == 'E') {
- mon_text_read_statset(rp, &ptr, ep);
- } else if (ep->xfertype == USB_ENDPOINT_XFER_ISOC) {
- mon_text_read_isostat(rp, &ptr, ep);
- mon_text_read_isodesc(rp, &ptr, ep);
- } else if (ep->xfertype == USB_ENDPOINT_XFER_INT) {
- mon_text_read_intstat(rp, &ptr, ep);
- } else {
- mon_text_read_statset(rp, &ptr, ep);
+ if (rp->printf_togo == 0) {
+
+ ep = mon_text_read_wait(rp, file);
+ if (IS_ERR(ep)) {
+ mutex_unlock(&rp->printf_lock);
+ return PTR_ERR(ep);
+ }
+ ptr.cnt = 0;
+ ptr.pbuf = rp->printf_buf;
+ ptr.limit = rp->printf_size;
+
+ mon_text_read_head_u(rp, &ptr, ep);
+ if (ep->type == 'E') {
+ mon_text_read_statset(rp, &ptr, ep);
+ } else if (ep->xfertype == USB_ENDPOINT_XFER_ISOC) {
+ mon_text_read_isostat(rp, &ptr, ep);
+ mon_text_read_isodesc(rp, &ptr, ep);
+ } else if (ep->xfertype == USB_ENDPOINT_XFER_INT) {
+ mon_text_read_intstat(rp, &ptr, ep);
+ } else {
+ mon_text_read_statset(rp, &ptr, ep);
+ }
+ ptr.cnt += snprintf(ptr.pbuf + ptr.cnt, ptr.limit - ptr.cnt,
+ " %d", ep->length);
+ mon_text_read_data(rp, &ptr, ep);
+
+ rp->printf_togo = ptr.cnt;
+ rp->printf_offset = 0;
+
+ kmem_cache_free(rp->e_slab, ep);
}
- ptr.cnt += snprintf(ptr.pbuf + ptr.cnt, ptr.limit - ptr.cnt,
- " %d", ep->length);
- mon_text_read_data(rp, &ptr, ep);

- if (copy_to_user(buf, rp->printf_buf, ptr.cnt))
- ptr.cnt = -EFAULT;
+ ret = mon_text_copy_to_user(rp, buf, nbytes);
mutex_unlock(&rp->printf_lock);
- kmem_cache_free(rp->e_slab, ep);
- return ptr.cnt;
+ return ret;
}

static struct mon_event_text *mon_text_read_wait(struct mon_reader_text *rp,
diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c
index 6891e9092775..a96dcc660d0f 100644
--- a/drivers/usb/storage/uas.c
+++ b/drivers/usb/storage/uas.c
@@ -1076,7 +1076,7 @@ static int uas_post_reset(struct usb_interface *intf)
return 0;

err = uas_configure_endpoints(devinfo);
- if (err && err != ENODEV)
+ if (err && err != -ENODEV)
shost_printk(KERN_ERR, shost,
"%s: alloc streams error %d after reset",
__func__, err);
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index b605115eb47a..ca3a5d430ae1 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -2137,6 +2137,13 @@ UNUSUAL_DEV( 0x152d, 0x2566, 0x0114, 0x0114,
USB_SC_DEVICE, USB_PR_DEVICE, NULL,
US_FL_BROKEN_FUA ),

+/* Reported by Teijo Kinnunen <teijo.kinnunen@code-q.fi> */
+UNUSUAL_DEV( 0x152d, 0x2567, 0x0117, 0x0117,
+ "JMicron",
+ "USB to ATA/ATAPI Bridge",
+ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+ US_FL_BROKEN_FUA ),
+
/* Reported-by George Cherian <george.cherian@cavium.com> */
UNUSUAL_DEV(0x152d, 0x9561, 0x0000, 0x9999,
"JMicron",
diff --git a/drivers/usb/usbip/vudc_sysfs.c b/drivers/usb/usbip/vudc_sysfs.c
index 0f98f2c7475f..7efa374a4970 100644
--- a/drivers/usb/usbip/vudc_sysfs.c
+++ b/drivers/usb/usbip/vudc_sysfs.c
@@ -117,10 +117,14 @@ static ssize_t store_sockfd(struct device *dev, struct device_attribute *attr,
if (rv != 0)
return -EINVAL;

+ if (!udc) {
+ dev_err(dev, "no device");
+ return -ENODEV;
+ }
spin_lock_irqsave(&udc->lock, flags);
/* Don't export what we don't have */
- if (!udc || !udc->driver || !udc->pullup) {
- dev_err(dev, "no device or gadget not bound");
+ if (!udc->driver || !udc->pullup) {
+ dev_err(dev, "gadget not bound");
ret = -ENODEV;
goto unlock;
}
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 489bfc61cf30..8977f40ea441 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -423,8 +423,6 @@ static inline int virtqueue_add(struct virtqueue *_vq,
i = vq->vring.desc[i].next;
}

- vq->vq.num_free += total_sg;
-
if (indirect)
kfree(desc);

diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
index 70c7194e2810..b0a158073abd 100644
--- a/drivers/watchdog/hpwdt.c
+++ b/drivers/watchdog/hpwdt.c
@@ -28,16 +28,7 @@
#include <linux/types.h>
#include <linux/uaccess.h>
#include <linux/watchdog.h>
-#ifdef CONFIG_HPWDT_NMI_DECODING
-#include <linux/dmi.h>
-#include <linux/spinlock.h>
-#include <linux/nmi.h>
-#include <linux/kdebug.h>
-#include <linux/notifier.h>
-#include <asm/cacheflush.h>
-#endif /* CONFIG_HPWDT_NMI_DECODING */
#include <asm/nmi.h>
-#include <asm/frame.h>

#define HPWDT_VERSION "1.4.0"
#define SECS_TO_TICKS(secs) ((secs) * 1000 / 128)
@@ -48,10 +39,14 @@
static unsigned int soft_margin = DEFAULT_MARGIN; /* in seconds */
static unsigned int reload; /* the computed soft_margin */
static bool nowayout = WATCHDOG_NOWAYOUT;
+#ifdef CONFIG_HPWDT_NMI_DECODING
+static unsigned int allow_kdump = 1;
+#endif
static char expect_release;
static unsigned long hpwdt_is_open;

static void __iomem *pci_mem_addr; /* the PCI-memory address */
+static unsigned long __iomem *hpwdt_nmistat;
static unsigned long __iomem *hpwdt_timer_reg;
static unsigned long __iomem *hpwdt_timer_con;

@@ -62,373 +57,6 @@ static const struct pci_device_id hpwdt_devices[] = {
};
MODULE_DEVICE_TABLE(pci, hpwdt_devices);

-#ifdef CONFIG_HPWDT_NMI_DECODING
-#define PCI_BIOS32_SD_VALUE 0x5F32335F /* "_32_" */
-#define CRU_BIOS_SIGNATURE_VALUE 0x55524324
-#define PCI_BIOS32_PARAGRAPH_LEN 16
-#define PCI_ROM_BASE1 0x000F0000
-#define ROM_SIZE 0x10000
-
-struct bios32_service_dir {
- u32 signature;
- u32 entry_point;
- u8 revision;
- u8 length;
- u8 checksum;
- u8 reserved[5];
-};
-
-/* type 212 */
-struct smbios_cru64_info {
- u8 type;
- u8 byte_length;
- u16 handle;
- u32 signature;
- u64 physical_address;
- u32 double_length;
- u32 double_offset;
-};
-#define SMBIOS_CRU64_INFORMATION 212
-
-/* type 219 */
-struct smbios_proliant_info {
- u8 type;
- u8 byte_length;
- u16 handle;
- u32 power_features;
- u32 omega_features;
- u32 reserved;
- u32 misc_features;
-};
-#define SMBIOS_ICRU_INFORMATION 219
-
-
-struct cmn_registers {
- union {
- struct {
- u8 ral;
- u8 rah;
- u16 rea2;
- };
- u32 reax;
- } u1;
- union {
- struct {
- u8 rbl;
- u8 rbh;
- u8 reb2l;
- u8 reb2h;
- };
- u32 rebx;
- } u2;
- union {
- struct {
- u8 rcl;
- u8 rch;
- u16 rec2;
- };
- u32 recx;
- } u3;
- union {
- struct {
- u8 rdl;
- u8 rdh;
- u16 red2;
- };
- u32 redx;
- } u4;
-
- u32 resi;
- u32 redi;
- u16 rds;
- u16 res;
- u32 reflags;
-} __attribute__((packed));
-
-static unsigned int hpwdt_nmi_decoding;
-static unsigned int allow_kdump = 1;
-static unsigned int is_icru;
-static unsigned int is_uefi;
-static DEFINE_SPINLOCK(rom_lock);
-static void *cru_rom_addr;
-static struct cmn_registers cmn_regs;
-
-extern asmlinkage void asminline_call(struct cmn_registers *pi86Regs,
- unsigned long *pRomEntry);
-
-#ifdef CONFIG_X86_32
-/* --32 Bit Bios------------------------------------------------------------ */
-
-#define HPWDT_ARCH 32
-
-asm(".text \n\t"
- ".align 4 \n\t"
- ".globl asminline_call \n"
- "asminline_call: \n\t"
- "pushl %ebp \n\t"
- "movl %esp, %ebp \n\t"
- "pusha \n\t"
- "pushf \n\t"
- "push %es \n\t"
- "push %ds \n\t"
- "pop %es \n\t"
- "movl 8(%ebp),%eax \n\t"
- "movl 4(%eax),%ebx \n\t"
- "movl 8(%eax),%ecx \n\t"
- "movl 12(%eax),%edx \n\t"
- "movl 16(%eax),%esi \n\t"
- "movl 20(%eax),%edi \n\t"
- "movl (%eax),%eax \n\t"
- "push %cs \n\t"
- "call *12(%ebp) \n\t"
- "pushf \n\t"
- "pushl %eax \n\t"
- "movl 8(%ebp),%eax \n\t"
- "movl %ebx,4(%eax) \n\t"
- "movl %ecx,8(%eax) \n\t"
- "movl %edx,12(%eax) \n\t"
- "movl %esi,16(%eax) \n\t"
- "movl %edi,20(%eax) \n\t"
- "movw %ds,24(%eax) \n\t"
- "movw %es,26(%eax) \n\t"
- "popl %ebx \n\t"
- "movl %ebx,(%eax) \n\t"
- "popl %ebx \n\t"
- "movl %ebx,28(%eax) \n\t"
- "pop %es \n\t"
- "popf \n\t"
- "popa \n\t"
- "leave \n\t"
- "ret \n\t"
- ".previous");
-
-
-/*
- * cru_detect
- *
- * Routine Description:
- * This function uses the 32-bit BIOS Service Directory record to
- * search for a $CRU record.
- *
- * Return Value:
- * 0 : SUCCESS
- * <0 : FAILURE
- */
-static int cru_detect(unsigned long map_entry,
- unsigned long map_offset)
-{
- void *bios32_map;
- unsigned long *bios32_entrypoint;
- unsigned long cru_physical_address;
- unsigned long cru_length;
- unsigned long physical_bios_base = 0;
- unsigned long physical_bios_offset = 0;
- int retval = -ENODEV;
-
- bios32_map = ioremap(map_entry, (2 * PAGE_SIZE));
-
- if (bios32_map == NULL)
- return -ENODEV;
-
- bios32_entrypoint = bios32_map + map_offset;
-
- cmn_regs.u1.reax = CRU_BIOS_SIGNATURE_VALUE;
-
- set_memory_x((unsigned long)bios32_map, 2);
- asminline_call(&cmn_regs, bios32_entrypoint);
-
- if (cmn_regs.u1.ral != 0) {
- pr_warn("Call succeeded but with an error: 0x%x\n",
- cmn_regs.u1.ral);
- } else {
- physical_bios_base = cmn_regs.u2.rebx;
- physical_bios_offset = cmn_regs.u4.redx;
- cru_length = cmn_regs.u3.recx;
- cru_physical_address =
- physical_bios_base + physical_bios_offset;
-
- /* If the values look OK, then map it in. */
- if ((physical_bios_base + physical_bios_offset)) {
- cru_rom_addr =
- ioremap(cru_physical_address, cru_length);
- if (cru_rom_addr) {
- set_memory_x((unsigned long)cru_rom_addr & PAGE_MASK,
- (cru_length + PAGE_SIZE - 1) >> PAGE_SHIFT);
- retval = 0;
- }
- }
-
- pr_debug("CRU Base Address: 0x%lx\n", physical_bios_base);
- pr_debug("CRU Offset Address: 0x%lx\n", physical_bios_offset);
- pr_debug("CRU Length: 0x%lx\n", cru_length);
- pr_debug("CRU Mapped Address: %p\n", &cru_rom_addr);
- }
- iounmap(bios32_map);
- return retval;
-}
-
-/*
- * bios_checksum
- */
-static int bios_checksum(const char __iomem *ptr, int len)
-{
- char sum = 0;
- int i;
-
- /*
- * calculate checksum of size bytes. This should add up
- * to zero if we have a valid header.
- */
- for (i = 0; i < len; i++)
- sum += ptr[i];
-
- return ((sum == 0) && (len > 0));
-}
-
-/*
- * bios32_present
- *
- * Routine Description:
- * This function finds the 32-bit BIOS Service Directory
- *
- * Return Value:
- * 0 : SUCCESS
- * <0 : FAILURE
- */
-static int bios32_present(const char __iomem *p)
-{
- struct bios32_service_dir *bios_32_ptr;
- int length;
- unsigned long map_entry, map_offset;
-
- bios_32_ptr = (struct bios32_service_dir *) p;
-
- /*
- * Search for signature by checking equal to the swizzled value
- * instead of calling another routine to perform a strcmp.
- */
- if (bios_32_ptr->signature == PCI_BIOS32_SD_VALUE) {
- length = bios_32_ptr->length * PCI_BIOS32_PARAGRAPH_LEN;
- if (bios_checksum(p, length)) {
- /*
- * According to the spec, we're looking for the
- * first 4KB-aligned address below the entrypoint
- * listed in the header. The Service Directory code
- * is guaranteed to occupy no more than 2 4KB pages.
- */
- map_entry = bios_32_ptr->entry_point & ~(PAGE_SIZE - 1);
- map_offset = bios_32_ptr->entry_point - map_entry;
-
- return cru_detect(map_entry, map_offset);
- }
- }
- return -ENODEV;
-}
-
-static int detect_cru_service(void)
-{
- char __iomem *p, *q;
- int rc = -1;
-
- /*
- * Search from 0x0f0000 through 0x0fffff, inclusive.
- */
- p = ioremap(PCI_ROM_BASE1, ROM_SIZE);
- if (p == NULL)
- return -ENOMEM;
-
- for (q = p; q < p + ROM_SIZE; q += 16) {
- rc = bios32_present(q);
- if (!rc)
- break;
- }
- iounmap(p);
- return rc;
-}
-/* ------------------------------------------------------------------------- */
-#endif /* CONFIG_X86_32 */
-#ifdef CONFIG_X86_64
-/* --64 Bit Bios------------------------------------------------------------ */
-
-#define HPWDT_ARCH 64
-
-asm(".text \n\t"
- ".align 4 \n\t"
- ".globl asminline_call \n\t"
- ".type asminline_call, @function \n\t"
- "asminline_call: \n\t"
- FRAME_BEGIN
- "pushq %rax \n\t"
- "pushq %rbx \n\t"
- "pushq %rdx \n\t"
- "pushq %r12 \n\t"
- "pushq %r9 \n\t"
- "movq %rsi, %r12 \n\t"
- "movq %rdi, %r9 \n\t"
- "movl 4(%r9),%ebx \n\t"
- "movl 8(%r9),%ecx \n\t"
- "movl 12(%r9),%edx \n\t"
- "movl 16(%r9),%esi \n\t"
- "movl 20(%r9),%edi \n\t"
- "movl (%r9),%eax \n\t"
- "call *%r12 \n\t"
- "pushfq \n\t"
- "popq %r12 \n\t"
- "movl %eax, (%r9) \n\t"
- "movl %ebx, 4(%r9) \n\t"
- "movl %ecx, 8(%r9) \n\t"
- "movl %edx, 12(%r9) \n\t"
- "movl %esi, 16(%r9) \n\t"
- "movl %edi, 20(%r9) \n\t"
- "movq %r12, %rax \n\t"
- "movl %eax, 28(%r9) \n\t"
- "popq %r9 \n\t"
- "popq %r12 \n\t"
- "popq %rdx \n\t"
- "popq %rbx \n\t"
- "popq %rax \n\t"
- FRAME_END
- "ret \n\t"
- ".previous");
-
-/*
- * dmi_find_cru
- *
- * Routine Description:
- * This function checks whether or not a SMBIOS/DMI record is
- * the 64bit CRU info or not
- */
-static void dmi_find_cru(const struct dmi_header *dm, void *dummy)
-{
- struct smbios_cru64_info *smbios_cru64_ptr;
- unsigned long cru_physical_address;
-
- if (dm->type == SMBIOS_CRU64_INFORMATION) {
- smbios_cru64_ptr = (struct smbios_cru64_info *) dm;
- if (smbios_cru64_ptr->signature == CRU_BIOS_SIGNATURE_VALUE) {
- cru_physical_address =
- smbios_cru64_ptr->physical_address +
- smbios_cru64_ptr->double_offset;
- cru_rom_addr = ioremap(cru_physical_address,
- smbios_cru64_ptr->double_length);
- set_memory_x((unsigned long)cru_rom_addr & PAGE_MASK,
- smbios_cru64_ptr->double_length >> PAGE_SHIFT);
- }
- }
-}
-
-static int detect_cru_service(void)
-{
- cru_rom_addr = NULL;
-
- dmi_walk(dmi_find_cru, NULL);
-
- /* if cru_rom_addr has been set then we found a CRU service */
- return ((cru_rom_addr != NULL) ? 0 : -ENODEV);
-}
-/* ------------------------------------------------------------------------- */
-#endif /* CONFIG_X86_64 */
-#endif /* CONFIG_HPWDT_NMI_DECODING */

/*
* Watchdog operations
@@ -475,32 +103,22 @@ static int hpwdt_time_left(void)
}

#ifdef CONFIG_HPWDT_NMI_DECODING
+static int hpwdt_my_nmi(void)
+{
+ return ioread8(hpwdt_nmistat) & 0x6;
+}
+
/*
* NMI Handler
*/
static int hpwdt_pretimeout(unsigned int ulReason, struct pt_regs *regs)
{
- unsigned long rom_pl;
- static int die_nmi_called;
-
- if (!hpwdt_nmi_decoding)
+ if ((ulReason == NMI_UNKNOWN) && !hpwdt_my_nmi())
return NMI_DONE;

- spin_lock_irqsave(&rom_lock, rom_pl);
- if (!die_nmi_called && !is_icru && !is_uefi)
- asminline_call(&cmn_regs, cru_rom_addr);
- die_nmi_called = 1;
- spin_unlock_irqrestore(&rom_lock, rom_pl);
-
if (allow_kdump)
hpwdt_stop();

- if (!is_icru && !is_uefi) {
- if (cmn_regs.u1.ral == 0) {
- nmi_panic(regs, "An NMI occurred, but unable to determine source.\n");
- return NMI_HANDLED;
- }
- }
nmi_panic(regs, "An NMI occurred. Depending on your system the reason "
"for the NMI is logged in any one of the following "
"resources:\n"
@@ -666,84 +284,11 @@ static struct miscdevice hpwdt_miscdev = {
* Init & Exit
*/

-#ifdef CONFIG_HPWDT_NMI_DECODING
-#ifdef CONFIG_X86_LOCAL_APIC
-static void hpwdt_check_nmi_decoding(struct pci_dev *dev)
-{
- /*
- * If nmi_watchdog is turned off then we can turn on
- * our nmi decoding capability.
- */
- hpwdt_nmi_decoding = 1;
-}
-#else
-static void hpwdt_check_nmi_decoding(struct pci_dev *dev)
-{
- dev_warn(&dev->dev, "NMI decoding is disabled. "
- "Your kernel does not support a NMI Watchdog.\n");
-}
-#endif /* CONFIG_X86_LOCAL_APIC */
-
-/*
- * dmi_find_icru
- *
- * Routine Description:
- * This function checks whether or not we are on an iCRU-based server.
- * This check is independent of architecture and needs to be made for
- * any ProLiant system.
- */
-static void dmi_find_icru(const struct dmi_header *dm, void *dummy)
-{
- struct smbios_proliant_info *smbios_proliant_ptr;
-
- if (dm->type == SMBIOS_ICRU_INFORMATION) {
- smbios_proliant_ptr = (struct smbios_proliant_info *) dm;
- if (smbios_proliant_ptr->misc_features & 0x01)
- is_icru = 1;
- if (smbios_proliant_ptr->misc_features & 0x408)
- is_uefi = 1;
- }
-}

static int hpwdt_init_nmi_decoding(struct pci_dev *dev)
{
+#ifdef CONFIG_HPWDT_NMI_DECODING
int retval;
-
- /*
- * On typical CRU-based systems we need to map that service in
- * the BIOS. For 32 bit Operating Systems we need to go through
- * the 32 Bit BIOS Service Directory. For 64 bit Operating
- * Systems we get that service through SMBIOS.
- *
- * On systems that support the new iCRU service all we need to
- * do is call dmi_walk to get the supported flag value and skip
- * the old cru detect code.
- */
- dmi_walk(dmi_find_icru, NULL);
- if (!is_icru && !is_uefi) {
-
- /*
- * We need to map the ROM to get the CRU service.
- * For 32 bit Operating Systems we need to go through the 32 Bit
- * BIOS Service Directory
- * For 64 bit Operating Systems we get that service through SMBIOS.
- */
- retval = detect_cru_service();
- if (retval < 0) {
- dev_warn(&dev->dev,
- "Unable to detect the %d Bit CRU Service.\n",
- HPWDT_ARCH);
- return retval;
- }
-
- /*
- * We know this is the only CRU call we need to make so lets keep as
- * few instructions as possible once the NMI comes in.
- */
- cmn_regs.u1.rah = 0x0D;
- cmn_regs.u1.ral = 0x02;
- }
-
/*
* Only one function can register for NMI_UNKNOWN
*/
@@ -771,44 +316,25 @@ static int hpwdt_init_nmi_decoding(struct pci_dev *dev)
dev_warn(&dev->dev,
"Unable to register a die notifier (err=%d).\n",
retval);
- if (cru_rom_addr)
- iounmap(cru_rom_addr);
return retval;
+#endif /* CONFIG_HPWDT_NMI_DECODING */
+ return 0;
}

static void hpwdt_exit_nmi_decoding(void)
{
+#ifdef CONFIG_HPWDT_NMI_DECODING
unregister_nmi_handler(NMI_UNKNOWN, "hpwdt");
unregister_nmi_handler(NMI_SERR, "hpwdt");
unregister_nmi_handler(NMI_IO_CHECK, "hpwdt");
- if (cru_rom_addr)
- iounmap(cru_rom_addr);
-}
-#else /* !CONFIG_HPWDT_NMI_DECODING */
-static void hpwdt_check_nmi_decoding(struct pci_dev *dev)
-{
-}
-
-static int hpwdt_init_nmi_decoding(struct pci_dev *dev)
-{
- return 0;
+#endif
}

-static void hpwdt_exit_nmi_decoding(void)
-{
-}
-#endif /* CONFIG_HPWDT_NMI_DECODING */
-
static int hpwdt_init_one(struct pci_dev *dev,
const struct pci_device_id *ent)
{
int retval;

- /*
- * Check if we can do NMI decoding or not
- */
- hpwdt_check_nmi_decoding(dev);
-
/*
* First let's find out if we are on an iLO2+ server. We will
* not run on a legacy ASM box.
@@ -842,6 +368,7 @@ static int hpwdt_init_one(struct pci_dev *dev,
retval = -ENOMEM;
goto error_pci_iomap;
}
+ hpwdt_nmistat = pci_mem_addr + 0x6e;
hpwdt_timer_reg = pci_mem_addr + 0x70;
hpwdt_timer_con = pci_mem_addr + 0x72;

@@ -912,6 +439,6 @@ MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default="
#ifdef CONFIG_HPWDT_NMI_DECODING
module_param(allow_kdump, int, 0);
MODULE_PARM_DESC(allow_kdump, "Start a kernel dump after NMI occurs");
-#endif /* !CONFIG_HPWDT_NMI_DECODING */
+#endif /* CONFIG_HPWDT_NMI_DECODING */

module_pci_driver(hpwdt_driver);
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 3eeed8f0aa06..3fadfabcac39 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -837,8 +837,6 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode,
if (!IS_LAST_ENTRY(s->first))
ext4_xattr_rehash(header(s->base),
s->here);
- ext4_xattr_cache_insert(ext4_mb_cache,
- bs->bh);
}
ext4_xattr_block_csum_set(inode, bs->bh);
unlock_buffer(bs->bh);
@@ -959,6 +957,7 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode,
} else if (bs->bh && s->base == bs->bh->b_data) {
/* We were modifying this block in-place. */
ea_bdebug(bs->bh, "keeping this block");
+ ext4_xattr_cache_insert(ext4_mb_cache, bs->bh);
new_bh = bs->bh;
get_bh(new_bh);
} else {
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index 1ac1593aded3..1ab91124a93e 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -86,10 +86,10 @@ struct nfs_direct_req {
struct nfs_direct_mirror mirrors[NFS_PAGEIO_DESCRIPTOR_MIRROR_MAX];
int mirror_count;

+ loff_t io_start; /* Start offset for I/O */
ssize_t count, /* bytes actually processed */
max_count, /* max expected count */
bytes_left, /* bytes left to be sent */
- io_start, /* start of IO */
error; /* any reported error */
struct completion completion; /* wait for i/o completion */

diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 9a3b3820306d..a8b786a648cd 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -1847,40 +1847,43 @@ int nfs_generic_commit_list(struct inode *inode, struct list_head *head,
return status;
}

-int nfs_commit_inode(struct inode *inode, int how)
+static int __nfs_commit_inode(struct inode *inode, int how,
+ struct writeback_control *wbc)
{
LIST_HEAD(head);
struct nfs_commit_info cinfo;
int may_wait = how & FLUSH_SYNC;
- int error = 0;
- int res;
+ int ret, nscan;

nfs_init_cinfo_from_inode(&cinfo, inode);
nfs_commit_begin(cinfo.mds);
- res = nfs_scan_commit(inode, &head, &cinfo);
- if (res)
- error = nfs_generic_commit_list(inode, &head, how, &cinfo);
+ for (;;) {
+ ret = nscan = nfs_scan_commit(inode, &head, &cinfo);
+ if (ret <= 0)
+ break;
+ ret = nfs_generic_commit_list(inode, &head, how, &cinfo);
+ if (ret < 0)
+ break;
+ ret = 0;
+ if (wbc && wbc->sync_mode == WB_SYNC_NONE) {
+ if (nscan < wbc->nr_to_write)
+ wbc->nr_to_write -= nscan;
+ else
+ wbc->nr_to_write = 0;
+ }
+ if (nscan < INT_MAX)
+ break;
+ cond_resched();
+ }
nfs_commit_end(cinfo.mds);
- if (res == 0)
- return res;
- if (error < 0)
- goto out_error;
- if (!may_wait)
- goto out_mark_dirty;
- error = wait_on_commit(cinfo.mds);
- if (error < 0)
- return error;
- return res;
-out_error:
- res = error;
- /* Note: If we exit without ensuring that the commit is complete,
- * we must mark the inode as dirty. Otherwise, future calls to
- * sync_inode() with the WB_SYNC_ALL flag set will fail to ensure
- * that the data is on the disk.
- */
-out_mark_dirty:
- __mark_inode_dirty(inode, I_DIRTY_DATASYNC);
- return res;
+ if (ret || !may_wait)
+ return ret;
+ return wait_on_commit(cinfo.mds);
+}
+
+int nfs_commit_inode(struct inode *inode, int how)
+{
+ return __nfs_commit_inode(inode, how, NULL);
}
EXPORT_SYMBOL_GPL(nfs_commit_inode);

@@ -1890,11 +1893,11 @@ int nfs_write_inode(struct inode *inode, struct writeback_control *wbc)
int flags = FLUSH_SYNC;
int ret = 0;

- /* no commits means nothing needs to be done */
- if (!nfsi->commit_info.ncommit)
- return ret;
-
if (wbc->sync_mode == WB_SYNC_NONE) {
+ /* no commits means nothing needs to be done */
+ if (!nfsi->commit_info.ncommit)
+ goto check_requests_outstanding;
+
/* Don't commit yet if this is a non-blocking flush and there
* are a lot of outstanding writes for this mapping.
*/
@@ -1905,16 +1908,16 @@ int nfs_write_inode(struct inode *inode, struct writeback_control *wbc)
flags = 0;
}

- ret = nfs_commit_inode(inode, flags);
- if (ret >= 0) {
- if (wbc->sync_mode == WB_SYNC_NONE) {
- if (ret < wbc->nr_to_write)
- wbc->nr_to_write -= ret;
- else
- wbc->nr_to_write = 0;
- }
- return 0;
- }
+ ret = __nfs_commit_inode(inode, flags, wbc);
+ if (!ret) {
+ if (flags & FLUSH_SYNC)
+ return 0;
+ } else if (nfsi->commit_info.ncommit)
+ goto out_mark_dirty;
+
+check_requests_outstanding:
+ if (!atomic_read(&nfsi->commit_info.rpcs_out))
+ return ret;
out_mark_dirty:
__mark_inode_dirty(inode, I_DIRTY_DATASYNC);
return ret;
diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h
index 982c299e435a..642d0597bb73 100644
--- a/include/drm/drm_crtc_helper.h
+++ b/include/drm/drm_crtc_helper.h
@@ -74,5 +74,6 @@ extern void drm_kms_helper_hotplug_event(struct drm_device *dev);
extern void drm_kms_helper_poll_disable(struct drm_device *dev);
extern void drm_kms_helper_poll_enable(struct drm_device *dev);
extern void drm_kms_helper_poll_enable_locked(struct drm_device *dev);
+extern bool drm_kms_helper_is_poll_worker(void);

#endif
diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h
index de179993e039..01225b0059b1 100644
--- a/include/linux/compiler-clang.h
+++ b/include/linux/compiler-clang.h
@@ -15,3 +15,8 @@
* with any version that can compile the kernel
*/
#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
+
+/* Clang doesn't have a way to turn it off per-function, yet. */
+#ifdef __noretpoline
+#undef __noretpoline
+#endif
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
index eb0ed31193a3..a1b1de17455c 100644
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -88,6 +88,10 @@
#define __weak __attribute__((weak))
#define __alias(symbol) __attribute__((alias(#symbol)))

+#ifdef RETPOLINE
+#define __noretpoline __attribute__((indirect_branch("keep")))
+#endif
+
/*
* it doesn't make sense on ARM (currently the only user of __naked)
* to trace naked functions because then mcount is called without
diff --git a/include/linux/init.h b/include/linux/init.h
index 8e346d1bd837..683508f6bb4e 100644
--- a/include/linux/init.h
+++ b/include/linux/init.h
@@ -5,10 +5,10 @@
#include <linux/types.h>

/* Built-in __init functions needn't be compiled with retpoline */
-#if defined(RETPOLINE) && !defined(MODULE)
-#define __noretpoline __attribute__((indirect_branch("keep")))
+#if defined(__noretpoline) && !defined(MODULE)
+#define __noinitretpoline __noretpoline
#else
-#define __noretpoline
+#define __noinitretpoline
#endif

/* These macros are used to mark some functions or
@@ -46,7 +46,7 @@

/* These are for everybody (although not all archs will actually
discard it in modules) */
-#define __init __section(.init.text) __cold notrace __latent_entropy __noretpoline
+#define __init __section(.init.text) __cold notrace __latent_entropy __noinitretpoline
#define __initdata __section(.init.data)
#define __initconst __section(.init.rodata)
#define __exitdata __section(.exit.data)
diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h
index 2ad1a2b289b5..9bfeb88fb940 100644
--- a/include/linux/netfilter/x_tables.h
+++ b/include/linux/netfilter/x_tables.h
@@ -375,38 +375,14 @@ static inline unsigned long ifname_compare_aligned(const char *_a,
return ret;
}

+struct xt_percpu_counter_alloc_state {
+ unsigned int off;
+ const char __percpu *mem;
+};

-/* On SMP, ip(6)t_entry->counters.pcnt holds address of the
- * real (percpu) counter. On !SMP, its just the packet count,
- * so nothing needs to be done there.
- *
- * xt_percpu_counter_alloc returns the address of the percpu
- * counter, or 0 on !SMP. We force an alignment of 16 bytes
- * so that bytes/packets share a common cache line.
- *
- * Hence caller must use IS_ERR_VALUE to check for error, this
- * allows us to return 0 for single core systems without forcing
- * callers to deal with SMP vs. NONSMP issues.
- */
-static inline unsigned long xt_percpu_counter_alloc(void)
-{
- if (nr_cpu_ids > 1) {
- void __percpu *res = __alloc_percpu(sizeof(struct xt_counters),
- sizeof(struct xt_counters));
-
- if (res == NULL)
- return -ENOMEM;
-
- return (__force unsigned long) res;
- }
-
- return 0;
-}
-static inline void xt_percpu_counter_free(u64 pcnt)
-{
- if (nr_cpu_ids > 1)
- free_percpu((void __percpu *) (unsigned long) pcnt);
-}
+bool xt_percpu_counter_alloc(struct xt_percpu_counter_alloc_state *state,
+ struct xt_counters *counter);
+void xt_percpu_counter_free(struct xt_counters *cnt);

static inline struct xt_counters *
xt_get_this_cpu_counter(struct xt_counters *cnt)
diff --git a/include/linux/nospec.h b/include/linux/nospec.h
index 132e3f5a2e0d..e791ebc65c9c 100644
--- a/include/linux/nospec.h
+++ b/include/linux/nospec.h
@@ -5,6 +5,7 @@

#ifndef _LINUX_NOSPEC_H
#define _LINUX_NOSPEC_H
+#include <asm/barrier.h>

/**
* array_index_mask_nospec() - generate a ~0 mask when index < size, 0 otherwise
@@ -29,26 +30,6 @@ static inline unsigned long array_index_mask_nospec(unsigned long index,
}
#endif

-/*
- * Warn developers about inappropriate array_index_nospec() usage.
- *
- * Even if the CPU speculates past the WARN_ONCE branch, the
- * sign bit of @index is taken into account when generating the
- * mask.
- *
- * This warning is compiled out when the compiler can infer that
- * @index and @size are less than LONG_MAX.
- */
-#define array_index_mask_nospec_check(index, size) \
-({ \
- if (WARN_ONCE(index > LONG_MAX || size > LONG_MAX, \
- "array_index_nospec() limited to range of [0, LONG_MAX]\n")) \
- _mask = 0; \
- else \
- _mask = array_index_mask_nospec(index, size); \
- _mask; \
-})
-
/*
* array_index_nospec - sanitize an array index after a bounds check
*
@@ -67,7 +48,7 @@ static inline unsigned long array_index_mask_nospec(unsigned long index,
({ \
typeof(index) _i = (index); \
typeof(size) _s = (size); \
- unsigned long _mask = array_index_mask_nospec_check(_i, _s); \
+ unsigned long _mask = array_index_mask_nospec(_i, _s); \
\
BUILD_BUG_ON(sizeof(_i) > sizeof(long)); \
BUILD_BUG_ON(sizeof(_s) > sizeof(long)); \
diff --git a/include/linux/usb/quirks.h b/include/linux/usb/quirks.h
index de2a722fe3cf..ea4f81c2a6d5 100644
--- a/include/linux/usb/quirks.h
+++ b/include/linux/usb/quirks.h
@@ -56,4 +56,7 @@
*/
#define USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL BIT(11)

+/* Device needs a pause after every control message. */
+#define USB_QUIRK_DELAY_CTRL_MSG BIT(13)
+
#endif /* __LINUX_USB_QUIRKS_H */
diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
index 1061add575d2..1def337b16d4 100644
--- a/include/linux/workqueue.h
+++ b/include/linux/workqueue.h
@@ -453,6 +453,7 @@ extern bool cancel_delayed_work_sync(struct delayed_work *dwork);

extern void workqueue_set_max_active(struct workqueue_struct *wq,
int max_active);
+extern struct work_struct *current_work(void);
extern bool current_is_workqueue_rescuer(void);
extern bool workqueue_congested(int cpu, struct workqueue_struct *wq);
extern unsigned int work_busy(struct work_struct *work);
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index ebfea5f94b66..664aebc50fe3 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -4129,6 +4129,22 @@ void workqueue_set_max_active(struct workqueue_struct *wq, int max_active)
}
EXPORT_SYMBOL_GPL(workqueue_set_max_active);

+/**
+ * current_work - retrieve %current task's work struct
+ *
+ * Determine if %current task is a workqueue worker and what it's working on.
+ * Useful to find out the context that the %current task is running in.
+ *
+ * Return: work struct if %current task is a workqueue worker, %NULL otherwise.
+ */
+struct work_struct *current_work(void)
+{
+ struct worker *worker = current_wq_worker();
+
+ return worker ? worker->current_work : NULL;
+}
+EXPORT_SYMBOL(current_work);
+
/**
* current_is_workqueue_rescuer - is %current workqueue rescuer?
*
diff --git a/net/bridge/netfilter/ebt_among.c b/net/bridge/netfilter/ebt_among.c
index 9024283d2bca..9637a681bdda 100644
--- a/net/bridge/netfilter/ebt_among.c
+++ b/net/bridge/netfilter/ebt_among.c
@@ -172,18 +172,35 @@ ebt_among_mt(const struct sk_buff *skb, struct xt_action_param *par)
return true;
}

+static bool poolsize_invalid(const struct ebt_mac_wormhash *w)
+{
+ return w && w->poolsize >= (INT_MAX / sizeof(struct ebt_mac_wormhash_tuple));
+}
+
static int ebt_among_mt_check(const struct xt_mtchk_param *par)
{
const struct ebt_among_info *info = par->matchinfo;
const struct ebt_entry_match *em =
container_of(par->matchinfo, const struct ebt_entry_match, data);
- int expected_length = sizeof(struct ebt_among_info);
+ unsigned int expected_length = sizeof(struct ebt_among_info);
const struct ebt_mac_wormhash *wh_dst, *wh_src;
int err;

+ if (expected_length > em->match_size)
+ return -EINVAL;
+
wh_dst = ebt_among_wh_dst(info);
- wh_src = ebt_among_wh_src(info);
+ if (poolsize_invalid(wh_dst))
+ return -EINVAL;
+
expected_length += ebt_mac_wormhash_size(wh_dst);
+ if (expected_length > em->match_size)
+ return -EINVAL;
+
+ wh_src = ebt_among_wh_src(info);
+ if (poolsize_invalid(wh_src))
+ return -EINVAL;
+
expected_length += ebt_mac_wormhash_size(wh_src);

if (em->match_size != EBT_ALIGN(expected_length)) {
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index f5c11bbe27db..5a89a4ac86ef 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -2031,7 +2031,9 @@ static int ebt_size_mwt(struct compat_ebt_entry_mwt *match32,
if (match_kern)
match_kern->match_size = ret;

- WARN_ON(type == EBT_COMPAT_TARGET && size_left);
+ if (WARN_ON(type == EBT_COMPAT_TARGET && size_left))
+ return -EINVAL;
+
match32 = (struct compat_ebt_entry_mwt *) buf;
}

@@ -2087,6 +2089,15 @@ static int size_entry_mwt(struct ebt_entry *entry, const unsigned char *base,
*
* offsets are relative to beginning of struct ebt_entry (i.e., 0).
*/
+ for (i = 0; i < 4 ; ++i) {
+ if (offsets[i] >= *total)
+ return -EINVAL;
+ if (i == 0)
+ continue;
+ if (offsets[i-1] > offsets[i])
+ return -EINVAL;
+ }
+
for (i = 0, j = 1 ; j < 4 ; j++, i++) {
struct compat_ebt_entry_mwt *match32;
unsigned int size;
diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index 697538464e6e..d35815e5967b 100644
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -261,6 +261,10 @@ unsigned int arpt_do_table(struct sk_buff *skb,
}
if (table_base + v
!= arpt_next_entry(e)) {
+ if (unlikely(stackidx >= private->stacksize)) {
+ verdict = NF_DROP;
+ break;
+ }
jumpstack[stackidx++] = e;
}

@@ -415,17 +419,15 @@ static inline int check_target(struct arpt_entry *e, const char *name)
}

static inline int
-find_check_entry(struct arpt_entry *e, const char *name, unsigned int size)
+find_check_entry(struct arpt_entry *e, const char *name, unsigned int size,
+ struct xt_percpu_counter_alloc_state *alloc_state)
{
struct xt_entry_target *t;
struct xt_target *target;
- unsigned long pcnt;
int ret;

- pcnt = xt_percpu_counter_alloc();
- if (IS_ERR_VALUE(pcnt))
+ if (!xt_percpu_counter_alloc(alloc_state, &e->counters))
return -ENOMEM;
- e->counters.pcnt = pcnt;

t = arpt_get_target(e);
target = xt_request_find_target(NFPROTO_ARP, t->u.user.name,
@@ -443,7 +445,7 @@ find_check_entry(struct arpt_entry *e, const char *name, unsigned int size)
err:
module_put(t->u.kernel.target->me);
out:
- xt_percpu_counter_free(e->counters.pcnt);
+ xt_percpu_counter_free(&e->counters);

return ret;
}
@@ -523,7 +525,7 @@ static inline void cleanup_entry(struct arpt_entry *e)
if (par.target->destroy != NULL)
par.target->destroy(&par);
module_put(par.target->me);
- xt_percpu_counter_free(e->counters.pcnt);
+ xt_percpu_counter_free(&e->counters);
}

/* Checks and translates the user-supplied table segment (held in
@@ -532,6 +534,7 @@ static inline void cleanup_entry(struct arpt_entry *e)
static int translate_table(struct xt_table_info *newinfo, void *entry0,
const struct arpt_replace *repl)
{
+ struct xt_percpu_counter_alloc_state alloc_state = { 0 };
struct arpt_entry *iter;
unsigned int *offsets;
unsigned int i;
@@ -594,7 +597,8 @@ static int translate_table(struct xt_table_info *newinfo, void *entry0,
/* Finally, each sanity check must pass */
i = 0;
xt_entry_foreach(iter, entry0, newinfo->size) {
- ret = find_check_entry(iter, repl->name, repl->size);
+ ret = find_check_entry(iter, repl->name, repl->size,
+ &alloc_state);
if (ret != 0)
break;
++i;
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index 7c00ce90adb8..e78f6521823f 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -345,8 +345,13 @@ ipt_do_table(struct sk_buff *skb,
continue;
}
if (table_base + v != ipt_next_entry(e) &&
- !(e->ip.flags & IPT_F_GOTO))
+ !(e->ip.flags & IPT_F_GOTO)) {
+ if (unlikely(stackidx >= private->stacksize)) {
+ verdict = NF_DROP;
+ break;
+ }
jumpstack[stackidx++] = e;
+ }

e = get_entry(table_base, v);
continue;
@@ -535,7 +540,8 @@ static int check_target(struct ipt_entry *e, struct net *net, const char *name)

static int
find_check_entry(struct ipt_entry *e, struct net *net, const char *name,
- unsigned int size)
+ unsigned int size,
+ struct xt_percpu_counter_alloc_state *alloc_state)
{
struct xt_entry_target *t;
struct xt_target *target;
@@ -543,12 +549,9 @@ find_check_entry(struct ipt_entry *e, struct net *net, const char *name,
unsigned int j;
struct xt_mtchk_param mtpar;
struct xt_entry_match *ematch;
- unsigned long pcnt;

- pcnt = xt_percpu_counter_alloc();
- if (IS_ERR_VALUE(pcnt))
+ if (!xt_percpu_counter_alloc(alloc_state, &e->counters))
return -ENOMEM;
- e->counters.pcnt = pcnt;

j = 0;
mtpar.net = net;
@@ -586,7 +589,7 @@ find_check_entry(struct ipt_entry *e, struct net *net, const char *name,
cleanup_match(ematch, net);
}

- xt_percpu_counter_free(e->counters.pcnt);
+ xt_percpu_counter_free(&e->counters);

return ret;
}
@@ -674,7 +677,7 @@ cleanup_entry(struct ipt_entry *e, struct net *net)
if (par.target->destroy != NULL)
par.target->destroy(&par);
module_put(par.target->me);
- xt_percpu_counter_free(e->counters.pcnt);
+ xt_percpu_counter_free(&e->counters);
}

/* Checks and translates the user-supplied table segment (held in
@@ -683,6 +686,7 @@ static int
translate_table(struct net *net, struct xt_table_info *newinfo, void *entry0,
const struct ipt_replace *repl)
{
+ struct xt_percpu_counter_alloc_state alloc_state = { 0 };
struct ipt_entry *iter;
unsigned int *offsets;
unsigned int i;
@@ -742,7 +746,8 @@ translate_table(struct net *net, struct xt_table_info *newinfo, void *entry0,
/* Finally, each sanity check must pass */
i = 0;
xt_entry_foreach(iter, entry0, newinfo->size) {
- ret = find_check_entry(iter, net, repl->name, repl->size);
+ ret = find_check_entry(iter, net, repl->name, repl->size,
+ &alloc_state);
if (ret != 0)
break;
++i;
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index 55aacea24396..e26becc9a43d 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -376,6 +376,10 @@ ip6t_do_table(struct sk_buff *skb,
}
if (table_base + v != ip6t_next_entry(e) &&
!(e->ipv6.flags & IP6T_F_GOTO)) {
+ if (unlikely(stackidx >= private->stacksize)) {
+ verdict = NF_DROP;
+ break;
+ }
jumpstack[stackidx++] = e;
}

@@ -566,7 +570,8 @@ static int check_target(struct ip6t_entry *e, struct net *net, const char *name)

static int
find_check_entry(struct ip6t_entry *e, struct net *net, const char *name,
- unsigned int size)
+ unsigned int size,
+ struct xt_percpu_counter_alloc_state *alloc_state)
{
struct xt_entry_target *t;
struct xt_target *target;
@@ -574,12 +579,9 @@ find_check_entry(struct ip6t_entry *e, struct net *net, const char *name,
unsigned int j;
struct xt_mtchk_param mtpar;
struct xt_entry_match *ematch;
- unsigned long pcnt;

- pcnt = xt_percpu_counter_alloc();
- if (IS_ERR_VALUE(pcnt))
+ if (!xt_percpu_counter_alloc(alloc_state, &e->counters))
return -ENOMEM;
- e->counters.pcnt = pcnt;

j = 0;
mtpar.net = net;
@@ -616,7 +618,7 @@ find_check_entry(struct ip6t_entry *e, struct net *net, const char *name,
cleanup_match(ematch, net);
}

- xt_percpu_counter_free(e->counters.pcnt);
+ xt_percpu_counter_free(&e->counters);

return ret;
}
@@ -703,8 +705,7 @@ static void cleanup_entry(struct ip6t_entry *e, struct net *net)
if (par.target->destroy != NULL)
par.target->destroy(&par);
module_put(par.target->me);
-
- xt_percpu_counter_free(e->counters.pcnt);
+ xt_percpu_counter_free(&e->counters);
}

/* Checks and translates the user-supplied table segment (held in
@@ -713,6 +714,7 @@ static int
translate_table(struct net *net, struct xt_table_info *newinfo, void *entry0,
const struct ip6t_replace *repl)
{
+ struct xt_percpu_counter_alloc_state alloc_state = { 0 };
struct ip6t_entry *iter;
unsigned int *offsets;
unsigned int i;
@@ -772,7 +774,8 @@ translate_table(struct net *net, struct xt_table_info *newinfo, void *entry0,
/* Finally, each sanity check must pass */
i = 0;
xt_entry_foreach(iter, entry0, newinfo->size) {
- ret = find_check_entry(iter, net, repl->name, repl->size);
+ ret = find_check_entry(iter, net, repl->name, repl->size,
+ &alloc_state);
if (ret != 0)
break;
++i;
diff --git a/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c b/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c
index e0be97e636a4..322c7657165b 100644
--- a/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c
+++ b/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c
@@ -99,6 +99,10 @@ static bool nf_nat_ipv6_manip_pkt(struct sk_buff *skb,
!l4proto->manip_pkt(skb, &nf_nat_l3proto_ipv6, iphdroff, hdroff,
target, maniptype))
return false;
+
+ /* must reload, offset might have changed */
+ ipv6h = (void *)skb->data + iphdroff;
+
manip_addr:
if (maniptype == NF_NAT_MANIP_SRC)
ipv6h->saddr = target->src.u3.in6;
diff --git a/net/netfilter/nf_nat_proto_common.c b/net/netfilter/nf_nat_proto_common.c
index fbce552a796e..7d7466dbf663 100644
--- a/net/netfilter/nf_nat_proto_common.c
+++ b/net/netfilter/nf_nat_proto_common.c
@@ -41,7 +41,7 @@ void nf_nat_l4proto_unique_tuple(const struct nf_nat_l3proto *l3proto,
const struct nf_conn *ct,
u16 *rover)
{
- unsigned int range_size, min, i;
+ unsigned int range_size, min, max, i;
__be16 *portptr;
u_int16_t off;

@@ -71,7 +71,10 @@ void nf_nat_l4proto_unique_tuple(const struct nf_nat_l3proto *l3proto,
}
} else {
min = ntohs(range->min_proto.all);
- range_size = ntohs(range->max_proto.all) - min + 1;
+ max = ntohs(range->max_proto.all);
+ if (unlikely(max < min))
+ swap(max, min);
+ range_size = max - min + 1;
}

if (range->flags & NF_NAT_RANGE_PROTO_RANDOM) {
diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
index e47ade305a46..ac26b71d900e 100644
--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c
@@ -39,6 +39,8 @@ MODULE_LICENSE("GPL");
MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>");
MODULE_DESCRIPTION("{ip,ip6,arp,eb}_tables backend module");

+#define XT_PCPU_BLOCK_SIZE 4096
+
struct compat_delta {
unsigned int offset; /* offset in kernel */
int delta; /* delta in 32bit user land */
@@ -1619,6 +1621,59 @@ void xt_proto_fini(struct net *net, u_int8_t af)
}
EXPORT_SYMBOL_GPL(xt_proto_fini);

+/**
+ * xt_percpu_counter_alloc - allocate x_tables rule counter
+ *
+ * @state: pointer to xt_percpu allocation state
+ * @counter: pointer to counter struct inside the ip(6)/arpt_entry struct
+ *
+ * On SMP, the packet counter [ ip(6)t_entry->counters.pcnt ] will then
+ * contain the address of the real (percpu) counter.
+ *
+ * Rule evaluation needs to use xt_get_this_cpu_counter() helper
+ * to fetch the real percpu counter.
+ *
+ * To speed up allocation and improve data locality, a 4kb block is
+ * allocated.
+ *
+ * xt_percpu_counter_alloc_state contains the base address of the
+ * allocated page and the current sub-offset.
+ *
+ * returns false on error.
+ */
+bool xt_percpu_counter_alloc(struct xt_percpu_counter_alloc_state *state,
+ struct xt_counters *counter)
+{
+ BUILD_BUG_ON(XT_PCPU_BLOCK_SIZE < (sizeof(*counter) * 2));
+
+ if (nr_cpu_ids <= 1)
+ return true;
+
+ if (!state->mem) {
+ state->mem = __alloc_percpu(XT_PCPU_BLOCK_SIZE,
+ XT_PCPU_BLOCK_SIZE);
+ if (!state->mem)
+ return false;
+ }
+ counter->pcnt = (__force unsigned long)(state->mem + state->off);
+ state->off += sizeof(*counter);
+ if (state->off > (XT_PCPU_BLOCK_SIZE - sizeof(*counter))) {
+ state->mem = NULL;
+ state->off = 0;
+ }
+ return true;
+}
+EXPORT_SYMBOL_GPL(xt_percpu_counter_alloc);
+
+void xt_percpu_counter_free(struct xt_counters *counters)
+{
+ unsigned long pcnt = counters->pcnt;
+
+ if (nr_cpu_ids > 1 && (pcnt & (XT_PCPU_BLOCK_SIZE - 1)) == 0)
+ free_percpu((void __percpu *)pcnt);
+}
+EXPORT_SYMBOL_GPL(xt_percpu_counter_free);
+
static int __net_init xt_net_init(struct net *net)
{
int i;
diff --git a/net/netfilter/xt_IDLETIMER.c b/net/netfilter/xt_IDLETIMER.c
index daf45da448fa..bb5d6a058fb7 100644
--- a/net/netfilter/xt_IDLETIMER.c
+++ b/net/netfilter/xt_IDLETIMER.c
@@ -147,11 +147,11 @@ static int idletimer_tg_create(struct idletimer_tg_info *info)
(unsigned long) info->timer);
info->timer->refcnt = 1;

+ INIT_WORK(&info->timer->work, idletimer_tg_work);
+
mod_timer(&info->timer->timer,
msecs_to_jiffies(info->timeout * 1000) + jiffies);

- INIT_WORK(&info->timer->work, idletimer_tg_work);
-
return 0;

out_free_attr:
@@ -192,7 +192,10 @@ static int idletimer_tg_checkentry(const struct xt_tgchk_param *par)
pr_debug("timeout value is zero\n");
return -EINVAL;
}
-
+ if (info->timeout >= INT_MAX / 1000) {
+ pr_debug("timeout value is too big\n");
+ return -EINVAL;
+ }
if (info->label[0] == '\0' ||
strnlen(info->label,
MAX_IDLETIMER_LABEL_SIZE) == MAX_IDLETIMER_LABEL_SIZE) {
diff --git a/net/netfilter/xt_LED.c b/net/netfilter/xt_LED.c
index 3ba31c194cce..0858fe17e14a 100644
--- a/net/netfilter/xt_LED.c
+++ b/net/netfilter/xt_LED.c
@@ -141,10 +141,11 @@ static int led_tg_check(const struct xt_tgchk_param *par)
goto exit_alloc;
}

- /* See if we need to set up a timer */
- if (ledinfo->delay > 0)
- setup_timer(&ledinternal->timer, led_timeout_callback,
- (unsigned long)ledinternal);
+ /* Since the letinternal timer can be shared between multiple targets,
+ * always set it up, even if the current target does not need it
+ */
+ setup_timer(&ledinternal->timer, led_timeout_callback,
+ (unsigned long)ledinternal);

list_add_tail(&ledinternal->list, &xt_led_triggers);

@@ -181,8 +182,7 @@ static void led_tg_destroy(const struct xt_tgdtor_param *par)

list_del(&ledinternal->list);

- if (ledinfo->delay > 0)
- del_timer_sync(&ledinternal->timer);
+ del_timer_sync(&ledinternal->timer);

led_trigger_unregister(&ledinternal->netfilter_led_trigger);

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 0a07f9014944..ae0f9ab1a70d 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -290,11 +290,11 @@ cmd_dt_S_dtb= \
echo '\#include <asm-generic/vmlinux.lds.h>'; \
echo '.section .dtb.init.rodata,"a"'; \
echo '.balign STRUCT_ALIGNMENT'; \
- echo '.global __dtb_$(*F)_begin'; \
- echo '__dtb_$(*F)_begin:'; \
+ echo '.global __dtb_$(subst -,_,$(*F))_begin'; \
+ echo '__dtb_$(subst -,_,$(*F))_begin:'; \
echo '.incbin "$<" '; \
- echo '__dtb_$(*F)_end:'; \
- echo '.global __dtb_$(*F)_end'; \
+ echo '__dtb_$(subst -,_,$(*F))_end:'; \
+ echo '.global __dtb_$(subst -,_,$(*F))_end'; \
echo '.balign STRUCT_ALIGNMENT'; \
) > $@

diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
index 0b408617b2c9..799ad3e1d24b 100644
--- a/sound/core/seq/seq_clientmgr.c
+++ b/sound/core/seq/seq_clientmgr.c
@@ -906,7 +906,8 @@ int snd_seq_dispatch_event(struct snd_seq_event_cell *cell, int atomic, int hop)
static int snd_seq_client_enqueue_event(struct snd_seq_client *client,
struct snd_seq_event *event,
struct file *file, int blocking,
- int atomic, int hop)
+ int atomic, int hop,
+ struct mutex *mutexp)
{
struct snd_seq_event_cell *cell;
int err;
@@ -944,7 +945,8 @@ static int snd_seq_client_enqueue_event(struct snd_seq_client *client,
return -ENXIO; /* queue is not allocated */

/* allocate an event cell */
- err = snd_seq_event_dup(client->pool, event, &cell, !blocking || atomic, file);
+ err = snd_seq_event_dup(client->pool, event, &cell, !blocking || atomic,
+ file, mutexp);
if (err < 0)
return err;

@@ -1013,12 +1015,11 @@ static ssize_t snd_seq_write(struct file *file, const char __user *buf,
return -ENXIO;

/* allocate the pool now if the pool is not allocated yet */
+ mutex_lock(&client->ioctl_mutex);
if (client->pool->size > 0 && !snd_seq_write_pool_allocated(client)) {
- mutex_lock(&client->ioctl_mutex);
err = snd_seq_pool_init(client->pool);
- mutex_unlock(&client->ioctl_mutex);
if (err < 0)
- return -ENOMEM;
+ goto out;
}

/* only process whole events */
@@ -1069,7 +1070,7 @@ static ssize_t snd_seq_write(struct file *file, const char __user *buf,
/* ok, enqueue it */
err = snd_seq_client_enqueue_event(client, &event, file,
!(file->f_flags & O_NONBLOCK),
- 0, 0);
+ 0, 0, &client->ioctl_mutex);
if (err < 0)
break;

@@ -1080,6 +1081,8 @@ static ssize_t snd_seq_write(struct file *file, const char __user *buf,
written += len;
}

+ out:
+ mutex_unlock(&client->ioctl_mutex);
return written ? written : err;
}

@@ -1835,6 +1838,9 @@ static int snd_seq_ioctl_set_client_pool(struct snd_seq_client *client,
(! snd_seq_write_pool_allocated(client) ||
info->output_pool != client->pool->size)) {
if (snd_seq_write_pool_allocated(client)) {
+ /* is the pool in use? */
+ if (atomic_read(&client->pool->counter))
+ return -EBUSY;
/* remove all existing cells */
snd_seq_pool_mark_closing(client->pool);
snd_seq_queue_client_leave_cells(client->number);
@@ -2259,7 +2265,8 @@ static int kernel_client_enqueue(int client, struct snd_seq_event *ev,
if (! cptr->accept_output)
result = -EPERM;
else /* send it */
- result = snd_seq_client_enqueue_event(cptr, ev, file, blocking, atomic, hop);
+ result = snd_seq_client_enqueue_event(cptr, ev, file, blocking,
+ atomic, hop, NULL);

snd_seq_client_unlock(cptr);
return result;
diff --git a/sound/core/seq/seq_fifo.c b/sound/core/seq/seq_fifo.c
index 3490d21ab9e7..9acbed1ac982 100644
--- a/sound/core/seq/seq_fifo.c
+++ b/sound/core/seq/seq_fifo.c
@@ -123,7 +123,7 @@ int snd_seq_fifo_event_in(struct snd_seq_fifo *f,
return -EINVAL;

snd_use_lock_use(&f->use_lock);
- err = snd_seq_event_dup(f->pool, event, &cell, 1, NULL); /* always non-blocking */
+ err = snd_seq_event_dup(f->pool, event, &cell, 1, NULL, NULL); /* always non-blocking */
if (err < 0) {
if ((err == -ENOMEM) || (err == -EAGAIN))
atomic_inc(&f->overflow);
diff --git a/sound/core/seq/seq_memory.c b/sound/core/seq/seq_memory.c
index 5847c4475bf3..4c8cbcd89887 100644
--- a/sound/core/seq/seq_memory.c
+++ b/sound/core/seq/seq_memory.c
@@ -221,7 +221,8 @@ void snd_seq_cell_free(struct snd_seq_event_cell * cell)
*/
static int snd_seq_cell_alloc(struct snd_seq_pool *pool,
struct snd_seq_event_cell **cellp,
- int nonblock, struct file *file)
+ int nonblock, struct file *file,
+ struct mutex *mutexp)
{
struct snd_seq_event_cell *cell;
unsigned long flags;
@@ -245,7 +246,11 @@ static int snd_seq_cell_alloc(struct snd_seq_pool *pool,
set_current_state(TASK_INTERRUPTIBLE);
add_wait_queue(&pool->output_sleep, &wait);
spin_unlock_irq(&pool->lock);
+ if (mutexp)
+ mutex_unlock(mutexp);
schedule();
+ if (mutexp)
+ mutex_lock(mutexp);
spin_lock_irq(&pool->lock);
remove_wait_queue(&pool->output_sleep, &wait);
/* interrupted? */
@@ -288,7 +293,7 @@ static int snd_seq_cell_alloc(struct snd_seq_pool *pool,
*/
int snd_seq_event_dup(struct snd_seq_pool *pool, struct snd_seq_event *event,
struct snd_seq_event_cell **cellp, int nonblock,
- struct file *file)
+ struct file *file, struct mutex *mutexp)
{
int ncells, err;
unsigned int extlen;
@@ -305,7 +310,7 @@ int snd_seq_event_dup(struct snd_seq_pool *pool, struct snd_seq_event *event,
if (ncells >= pool->total_elements)
return -ENOMEM;

- err = snd_seq_cell_alloc(pool, &cell, nonblock, file);
+ err = snd_seq_cell_alloc(pool, &cell, nonblock, file, mutexp);
if (err < 0)
return err;

@@ -331,7 +336,8 @@ int snd_seq_event_dup(struct snd_seq_pool *pool, struct snd_seq_event *event,
int size = sizeof(struct snd_seq_event);
if (len < size)
size = len;
- err = snd_seq_cell_alloc(pool, &tmp, nonblock, file);
+ err = snd_seq_cell_alloc(pool, &tmp, nonblock, file,
+ mutexp);
if (err < 0)
goto __error;
if (cell->event.data.ext.ptr == NULL)
diff --git a/sound/core/seq/seq_memory.h b/sound/core/seq/seq_memory.h
index 32f959c17786..3abe306c394a 100644
--- a/sound/core/seq/seq_memory.h
+++ b/sound/core/seq/seq_memory.h
@@ -66,7 +66,8 @@ struct snd_seq_pool {
void snd_seq_cell_free(struct snd_seq_event_cell *cell);

int snd_seq_event_dup(struct snd_seq_pool *pool, struct snd_seq_event *event,
- struct snd_seq_event_cell **cellp, int nonblock, struct file *file);
+ struct snd_seq_event_cell **cellp, int nonblock,
+ struct file *file, struct mutex *mutexp);

/* return number of unused (free) cells */
static inline int snd_seq_unused_cells(struct snd_seq_pool *pool)
diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
index 2c3065c1f3fb..b3851b991120 100644
--- a/sound/pci/hda/patch_conexant.c
+++ b/sound/pci/hda/patch_conexant.c
@@ -849,6 +849,8 @@ static const struct snd_pci_quirk cxt5066_fixups[] = {
SND_PCI_QUIRK(0x1025, 0x054c, "Acer Aspire 3830TG", CXT_FIXUP_ASPIRE_DMIC),
SND_PCI_QUIRK(0x1025, 0x054f, "Acer Aspire 4830T", CXT_FIXUP_ASPIRE_DMIC),
SND_PCI_QUIRK(0x103c, 0x8079, "HP EliteBook 840 G3", CXT_FIXUP_HP_DOCK),
+ SND_PCI_QUIRK(0x103c, 0x807C, "HP EliteBook 820 G3", CXT_FIXUP_HP_DOCK),
+ SND_PCI_QUIRK(0x103c, 0x80FD, "HP ProBook 640 G2", CXT_FIXUP_HP_DOCK),
SND_PCI_QUIRK(0x103c, 0x8174, "HP Spectre x360", CXT_FIXUP_HP_SPECTRE),
SND_PCI_QUIRK(0x103c, 0x8115, "HP Z1 Gen3", CXT_FIXUP_HP_GATE_MIC),
SND_PCI_QUIRK(0x1043, 0x138d, "Asus", CXT_FIXUP_HEADPHONE_MIC_PIN),
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 974b74e91ef0..cd427ea8861d 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -4760,6 +4760,16 @@ static void alc298_fixup_speaker_volume(struct hda_codec *codec,
}
}

+/* disable DAC3 (0x06) selection on NID 0x17 as it has no volume amp control */
+static void alc295_fixup_disable_dac3(struct hda_codec *codec,
+ const struct hda_fixup *fix, int action)
+{
+ if (action == HDA_FIXUP_ACT_PRE_PROBE) {
+ hda_nid_t conn[2] = { 0x02, 0x03 };
+ snd_hda_override_conn_list(codec, 0x17, 2, conn);
+ }
+}
+
/* Hook to update amp GPIO4 for automute */
static void alc280_hp_gpio4_automute_hook(struct hda_codec *codec,
struct hda_jack_callback *jack)
@@ -4909,6 +4919,7 @@ enum {
ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY,
ALC255_FIXUP_DELL_SPK_NOISE,
ALC225_FIXUP_DELL1_MIC_NO_PRESENCE,
+ ALC295_FIXUP_DISABLE_DAC3,
ALC280_FIXUP_HP_HEADSET_MIC,
ALC221_FIXUP_HP_FRONT_MIC,
ALC292_FIXUP_TPT460,
@@ -5601,6 +5612,10 @@ static const struct hda_fixup alc269_fixups[] = {
.chained = true,
.chain_id = ALC298_FIXUP_DELL_AIO_MIC_NO_PRESENCE,
},
+ [ALC295_FIXUP_DISABLE_DAC3] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = alc295_fixup_disable_dac3,
+ },
[ALC256_FIXUP_DELL_INSPIRON_7559_SUBWOOFER] = {
.type = HDA_FIXUP_PINS,
.v.pins = (const struct hda_pintbl[]) {
@@ -5664,6 +5679,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
SND_PCI_QUIRK(0x1028, 0x0725, "Dell Inspiron 3162", ALC255_FIXUP_DELL_SPK_NOISE),
SND_PCI_QUIRK(0x1028, 0x075b, "Dell XPS 13 9360", ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE),
SND_PCI_QUIRK(0x1028, 0x075d, "Dell AIO", ALC298_FIXUP_SPK_VOLUME),
+ SND_PCI_QUIRK(0x1028, 0x07b0, "Dell Precision 7520", ALC295_FIXUP_DISABLE_DAC3),
SND_PCI_QUIRK(0x1028, 0x0798, "Dell Inspiron 17 7000 Gaming", ALC256_FIXUP_DELL_INSPIRON_7559_SUBWOOFER),
SND_PCI_QUIRK(0x1028, 0x082a, "Dell XPS 13 9360", ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE),
SND_PCI_QUIRK(0x1028, 0x164a, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
@@ -5785,9 +5801,11 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
SND_PCI_QUIRK(0x17aa, 0x2245, "Thinkpad T470", ALC298_FIXUP_TPT470_DOCK),
SND_PCI_QUIRK(0x17aa, 0x2246, "Thinkpad", ALC298_FIXUP_TPT470_DOCK),
SND_PCI_QUIRK(0x17aa, 0x2247, "Thinkpad", ALC298_FIXUP_TPT470_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x2249, "Thinkpad", ALC292_FIXUP_TPT460),
SND_PCI_QUIRK(0x17aa, 0x224b, "Thinkpad", ALC298_FIXUP_TPT470_DOCK),
SND_PCI_QUIRK(0x17aa, 0x224c, "Thinkpad", ALC298_FIXUP_TPT470_DOCK),
SND_PCI_QUIRK(0x17aa, 0x224d, "Thinkpad", ALC298_FIXUP_TPT470_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x225d, "Thinkpad T480", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
SND_PCI_QUIRK(0x17aa, 0x30bb, "ThinkCentre AIO", ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY),
SND_PCI_QUIRK(0x17aa, 0x30e2, "ThinkCentre AIO", ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY),
SND_PCI_QUIRK(0x17aa, 0x3112, "ThinkCentre AIO", ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY),
diff --git a/sound/soc/codecs/rt5651.c b/sound/soc/codecs/rt5651.c
index f5d34153e21f..f0c9e2562474 100644
--- a/sound/soc/codecs/rt5651.c
+++ b/sound/soc/codecs/rt5651.c
@@ -1736,6 +1736,7 @@ static const struct regmap_config rt5651_regmap = {
.num_reg_defaults = ARRAY_SIZE(rt5651_reg),
.ranges = rt5651_ranges,
.num_ranges = ARRAY_SIZE(rt5651_ranges),
+ .use_single_rw = true,
};

#if defined(CONFIG_OF)
diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c
index 1589325855bc..3dba5550a665 100644
--- a/sound/soc/codecs/sgtl5000.c
+++ b/sound/soc/codecs/sgtl5000.c
@@ -774,15 +774,26 @@ static int sgtl5000_pcm_hw_params(struct snd_pcm_substream *substream,
static int sgtl5000_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
+ struct sgtl5000_priv *sgtl = snd_soc_codec_get_drvdata(codec);
+ int ret;
+
switch (level) {
case SND_SOC_BIAS_ON:
case SND_SOC_BIAS_PREPARE:
case SND_SOC_BIAS_STANDBY:
+ regcache_cache_only(sgtl->regmap, false);
+ ret = regcache_sync(sgtl->regmap);
+ if (ret) {
+ regcache_cache_only(sgtl->regmap, true);
+ return ret;
+ }
+
snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
SGTL5000_REFTOP_POWERUP,
SGTL5000_REFTOP_POWERUP);
break;
case SND_SOC_BIAS_OFF:
+ regcache_cache_only(sgtl->regmap, true);
snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
SGTL5000_REFTOP_POWERUP, 0);
break;
diff --git a/tools/perf/util/trigger.h b/tools/perf/util/trigger.h
index e97d7016d771..ce7e6e5c1cea 100644
--- a/tools/perf/util/trigger.h
+++ b/tools/perf/util/trigger.h
@@ -11,7 +11,7 @@
* States and transits:
*
*
- * OFF--(on)--> READY --(hit)--> HIT
+ * OFF--> ON --> READY --(hit)--> HIT
* ^ |
* | (ready)
* | |
@@ -26,8 +26,9 @@ struct trigger {
volatile enum {
TRIGGER_ERROR = -2,
TRIGGER_OFF = -1,
- TRIGGER_READY = 0,
- TRIGGER_HIT = 1,
+ TRIGGER_ON = 0,
+ TRIGGER_READY = 1,
+ TRIGGER_HIT = 2,
} state;
const char *name;
};
@@ -49,7 +50,7 @@ static inline bool trigger_is_error(struct trigger *t)
static inline void trigger_on(struct trigger *t)
{
TRIGGER_WARN_ONCE(t, TRIGGER_OFF);
- t->state = TRIGGER_READY;
+ t->state = TRIGGER_ON;
}

static inline void trigger_ready(struct trigger *t)
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