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SubjectRe: Linux 4.14.150
diff --git a/Documentation/usb/rio.txt b/Documentation/usb/rio.txt
deleted file mode 100644
index aee715af7db7..000000000000
--- a/Documentation/usb/rio.txt
+++ /dev/null
@@ -1,138 +0,0 @@
-Copyright (C) 1999, 2000 Bruce Tenison
-Portions Copyright (C) 1999, 2000 David Nelson
-Thanks to David Nelson for guidance and the usage of the scanner.txt
-and scanner.c files to model our driver and this informative file.
-
-Mar. 2, 2000
-
-CHANGES
-
-- Initial Revision
-
-
-OVERVIEW
-
-This README will address issues regarding how to configure the kernel
-to access a RIO 500 mp3 player.
-Before I explain how to use this to access the Rio500 please be warned:
-
-W A R N I N G:
---------------
-
-Please note that this software is still under development. The authors
-are in no way responsible for any damage that may occur, no matter how
-inconsequential.
-
-It seems that the Rio has a problem when sending .mp3 with low batteries.
-I suggest when the batteries are low and you want to transfer stuff that you
-replace it with a fresh one. In my case, what happened is I lost two 16kb
-blocks (they are no longer usable to store information to it). But I don't
-know if that's normal or not; it could simply be a problem with the flash
-memory.
-
-In an extreme case, I left my Rio playing overnight and the batteries wore
-down to nothing and appear to have corrupted the flash memory. My RIO
-needed to be replaced as a result. Diamond tech support is aware of the
-problem. Do NOT allow your batteries to wear down to nothing before
-changing them. It appears RIO 500 firmware does not handle low battery
-power well at all.
-
-On systems with OHCI controllers, the kernel OHCI code appears to have
-power on problems with some chipsets. If you are having problems
-connecting to your RIO 500, try turning it on first and then plugging it
-into the USB cable.
-
-Contact information:
---------------------
-
- The main page for the project is hosted at sourceforge.net in the following
- URL: <http://rio500.sourceforge.net>. You can also go to the project's
- sourceforge home page at: <http://sourceforge.net/projects/rio500/>.
- There is also a mailing list: rio500-users@lists.sourceforge.net
-
-Authors:
--------
-
-Most of the code was written by Cesar Miquel <miquel@df.uba.ar>. Keith
-Clayton <kclayton@jps.net> is incharge of the PPC port and making sure
-things work there. Bruce Tenison <btenison@dibbs.net> is adding support
-for .fon files and also does testing. The program will mostly sure be
-re-written and Pete Ikusz along with the rest will re-design it. I would
-also like to thank Tri Nguyen <tmn_3022000@hotmail.com> who provided use
-with some important information regarding the communication with the Rio.
-
-ADDITIONAL INFORMATION and Userspace tools
-
-http://rio500.sourceforge.net/
-
-
-REQUIREMENTS
-
-A host with a USB port. Ideally, either a UHCI (Intel) or OHCI
-(Compaq and others) hardware port should work.
-
-A Linux development kernel (2.3.x) with USB support enabled or a
-backported version to linux-2.2.x. See http://www.linux-usb.org for
-more information on accomplishing this.
-
-A Linux kernel with RIO 500 support enabled.
-
-'lspci' which is only needed to determine the type of USB hardware
-available in your machine.
-
-CONFIGURATION
-
-Using `lspci -v`, determine the type of USB hardware available.
-
- If you see something like:
-
- USB Controller: ......
- Flags: .....
- I/O ports at ....
-
- Then you have a UHCI based controller.
-
- If you see something like:
-
- USB Controller: .....
- Flags: ....
- Memory at .....
-
- Then you have a OHCI based controller.
-
-Using `make menuconfig` or your preferred method for configuring the
-kernel, select 'Support for USB', 'OHCI/UHCI' depending on your
-hardware (determined from the steps above), 'USB Diamond Rio500 support', and
-'Preliminary USB device filesystem'. Compile and install the modules
-(you may need to execute `depmod -a` to update the module
-dependencies).
-
-Add a device for the USB rio500:
- `mknod /dev/usb/rio500 c 180 64`
-
-Set appropriate permissions for /dev/usb/rio500 (don't forget about
-group and world permissions). Both read and write permissions are
-required for proper operation.
-
-Load the appropriate modules (if compiled as modules):
-
- OHCI:
- modprobe usbcore
- modprobe usb-ohci
- modprobe rio500
-
- UHCI:
- modprobe usbcore
- modprobe usb-uhci (or uhci)
- modprobe rio500
-
-That's it. The Rio500 Utils at: http://rio500.sourceforge.net should
-be able to access the rio500.
-
-BUGS
-
-If you encounter any problems feel free to drop me an email.
-
-Bruce Tenison
-btenison@dibbs.net
-
diff --git a/MAINTAINERS b/MAINTAINERS
index 6cb70b853323..029f96c43250 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -13886,13 +13886,6 @@ W: http://www.linux-usb.org/usbnet
S: Maintained
F: drivers/net/usb/dm9601.c

-USB DIAMOND RIO500 DRIVER
-M: Cesar Miquel <miquel@df.uba.ar>
-L: rio500-users@lists.sourceforge.net
-W: http://rio500.sourceforge.net
-S: Maintained
-F: drivers/usb/misc/rio500*
-
USB EHCI DRIVER
M: Alan Stern <stern@rowland.harvard.edu>
L: linux-usb@vger.kernel.org
diff --git a/Makefile b/Makefile
index 93c3467eeb8c..3d96b277ffc9 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
VERSION = 4
PATCHLEVEL = 14
-SUBLEVEL = 149
+SUBLEVEL = 150
EXTRAVERSION =
NAME = Petit Gorille

diff --git a/arch/arm/configs/badge4_defconfig b/arch/arm/configs/badge4_defconfig
index 5ae5b5228467..ef484c4cfd1a 100644
--- a/arch/arm/configs/badge4_defconfig
+++ b/arch/arm/configs/badge4_defconfig
@@ -91,7 +91,6 @@ CONFIG_USB_SERIAL_PL2303=m
CONFIG_USB_SERIAL_CYBERJACK=m
CONFIG_USB_SERIAL_XIRCOM=m
CONFIG_USB_SERIAL_OMNINET=m
-CONFIG_USB_RIO500=m
CONFIG_EXT2_FS=m
CONFIG_EXT3_FS=m
CONFIG_MSDOS_FS=y
diff --git a/arch/arm/configs/corgi_defconfig b/arch/arm/configs/corgi_defconfig
index 09e1672777c9..0ba8df0d48b9 100644
--- a/arch/arm/configs/corgi_defconfig
+++ b/arch/arm/configs/corgi_defconfig
@@ -197,7 +197,6 @@ CONFIG_USB_SERIAL_XIRCOM=m
CONFIG_USB_SERIAL_OMNINET=m
CONFIG_USB_EMI62=m
CONFIG_USB_EMI26=m
-CONFIG_USB_RIO500=m
CONFIG_USB_LEGOTOWER=m
CONFIG_USB_LCD=m
CONFIG_USB_CYTHERM=m
diff --git a/arch/arm/configs/pxa_defconfig b/arch/arm/configs/pxa_defconfig
index d5e1370ec303..38a5680c8236 100644
--- a/arch/arm/configs/pxa_defconfig
+++ b/arch/arm/configs/pxa_defconfig
@@ -588,7 +588,6 @@ CONFIG_USB_SERIAL_XIRCOM=m
CONFIG_USB_SERIAL_OMNINET=m
CONFIG_USB_EMI62=m
CONFIG_USB_EMI26=m
-CONFIG_USB_RIO500=m
CONFIG_USB_LEGOTOWER=m
CONFIG_USB_LCD=m
CONFIG_USB_CYTHERM=m
diff --git a/arch/arm/configs/s3c2410_defconfig b/arch/arm/configs/s3c2410_defconfig
index 2afb359f3168..bd71d5bf98c9 100644
--- a/arch/arm/configs/s3c2410_defconfig
+++ b/arch/arm/configs/s3c2410_defconfig
@@ -334,7 +334,6 @@ CONFIG_USB_EMI62=m
CONFIG_USB_EMI26=m
CONFIG_USB_ADUTUX=m
CONFIG_USB_SEVSEG=m
-CONFIG_USB_RIO500=m
CONFIG_USB_LEGOTOWER=m
CONFIG_USB_LCD=m
CONFIG_USB_CYPRESS_CY7C63=m
diff --git a/arch/arm/configs/spitz_defconfig b/arch/arm/configs/spitz_defconfig
index 9ea82c118661..3aff4ca2a94e 100644
--- a/arch/arm/configs/spitz_defconfig
+++ b/arch/arm/configs/spitz_defconfig
@@ -191,7 +191,6 @@ CONFIG_USB_SERIAL_XIRCOM=m
CONFIG_USB_SERIAL_OMNINET=m
CONFIG_USB_EMI62=m
CONFIG_USB_EMI26=m
-CONFIG_USB_RIO500=m
CONFIG_USB_LEGOTOWER=m
CONFIG_USB_LCD=m
CONFIG_USB_CYTHERM=m
diff --git a/arch/mips/configs/mtx1_defconfig b/arch/mips/configs/mtx1_defconfig
index c3d0d0a6e044..6895430b5b2c 100644
--- a/arch/mips/configs/mtx1_defconfig
+++ b/arch/mips/configs/mtx1_defconfig
@@ -623,7 +623,6 @@ CONFIG_USB_SERIAL_OMNINET=m
CONFIG_USB_EMI62=m
CONFIG_USB_EMI26=m
CONFIG_USB_ADUTUX=m
-CONFIG_USB_RIO500=m
CONFIG_USB_LEGOTOWER=m
CONFIG_USB_LCD=m
CONFIG_USB_CYPRESS_CY7C63=m
diff --git a/arch/mips/configs/rm200_defconfig b/arch/mips/configs/rm200_defconfig
index 99679e514042..d67a39219fff 100644
--- a/arch/mips/configs/rm200_defconfig
+++ b/arch/mips/configs/rm200_defconfig
@@ -344,7 +344,6 @@ CONFIG_USB_SERIAL_SAFE_PADDED=y
CONFIG_USB_SERIAL_CYBERJACK=m
CONFIG_USB_SERIAL_XIRCOM=m
CONFIG_USB_SERIAL_OMNINET=m
-CONFIG_USB_RIO500=m
CONFIG_USB_LEGOTOWER=m
CONFIG_USB_LCD=m
CONFIG_USB_CYTHERM=m
diff --git a/arch/mips/loongson64/Platform b/arch/mips/loongson64/Platform
index 0fce4608aa88..12abf14aed4a 100644
--- a/arch/mips/loongson64/Platform
+++ b/arch/mips/loongson64/Platform
@@ -43,6 +43,10 @@ else
$(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64)
endif

+# Some -march= flags enable MMI instructions, and GCC complains about that
+# support being enabled alongside -msoft-float. Thus explicitly disable MMI.
+cflags-y += $(call cc-option,-mno-loongson-mmi)
+
#
# Loongson Machines' Support
#
diff --git a/arch/mips/vdso/Makefile b/arch/mips/vdso/Makefile
index 0f455fdf822a..24f5f6baf2c0 100644
--- a/arch/mips/vdso/Makefile
+++ b/arch/mips/vdso/Makefile
@@ -9,6 +9,7 @@ ccflags-vdso := \
$(filter -mmicromips,$(KBUILD_CFLAGS)) \
$(filter -march=%,$(KBUILD_CFLAGS)) \
$(filter -m%-float,$(KBUILD_CFLAGS)) \
+ $(filter -mno-loongson-%,$(KBUILD_CFLAGS)) \
-D__VDSO__
cflags-vdso := $(ccflags-vdso) \
$(filter -W%,$(filter-out -Wa$(comma)%,$(KBUILD_CFLAGS))) \
diff --git a/arch/x86/include/asm/mwait.h b/arch/x86/include/asm/mwait.h
index eb0f80ce8524..3aa82deeab5a 100644
--- a/arch/x86/include/asm/mwait.h
+++ b/arch/x86/include/asm/mwait.h
@@ -21,7 +21,7 @@
#define MWAIT_ECX_INTERRUPT_BREAK 0x1
#define MWAITX_ECX_TIMER_ENABLE BIT(1)
#define MWAITX_MAX_LOOPS ((u32)-1)
-#define MWAITX_DISABLE_CSTATES 0xf
+#define MWAITX_DISABLE_CSTATES 0xf0

static inline void __monitor(const void *eax, unsigned long ecx,
unsigned long edx)
diff --git a/arch/x86/lib/delay.c b/arch/x86/lib/delay.c
index 4846eff7e4c8..17a0d0f5a1bf 100644
--- a/arch/x86/lib/delay.c
+++ b/arch/x86/lib/delay.c
@@ -113,8 +113,8 @@ static void delay_mwaitx(unsigned long __loops)
__monitorx(raw_cpu_ptr(&cpu_tss_rw), 0, 0);

/*
- * AMD, like Intel, supports the EAX hint and EAX=0xf
- * means, do not enter any deep C-state and we use it
+ * AMD, like Intel's MWAIT version, supports the EAX hint and
+ * EAX=0xf0 means, do not enter any deep C-state and we use it
* here in delay() to minimize wakeup latency.
*/
__mwaitx(MWAITX_DISABLE_CSTATES, delay, MWAITX_ECX_TIMER_ENABLE);
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index c3eefa126e3b..f50072b51aef 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -266,6 +266,9 @@ static __init int efivar_ssdt_load(void)
void *data;
int ret;

+ if (!efivar_ssdt[0])
+ return 0;
+
ret = efivar_init(efivar_ssdt_iter, &entries, true, &entries);

list_for_each_entry_safe(entry, aux, &entries, list) {
diff --git a/drivers/firmware/google/vpd_decode.c b/drivers/firmware/google/vpd_decode.c
index e75abe9fa122..6c7ab2ba85d2 100644
--- a/drivers/firmware/google/vpd_decode.c
+++ b/drivers/firmware/google/vpd_decode.c
@@ -62,7 +62,7 @@ static int vpd_decode_entry(const u32 max_len, const u8 *input_buf,
if (max_len - consumed < *entry_len)
return VPD_FAIL;

- consumed += decoded_len;
+ consumed += *entry_len;
*_consumed = consumed;
return VPD_OK;
}
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index f1809a54fcee..c7f5f0be2d74 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -2329,8 +2329,10 @@ static int _gpiod_direction_output_raw(struct gpio_desc *desc, int value)
if (!ret)
goto set_output_value;
/* Emulate open drain by not actively driving the line high */
- if (val)
- return gpiod_direction_input(desc);
+ if (val) {
+ ret = gpiod_direction_input(desc);
+ goto set_output_flag;
+ }
}
else if (test_bit(FLAG_OPEN_SOURCE, &desc->flags)) {
ret = gpio_set_drive_single_ended(gc, gpio_chip_hwgpio(desc),
@@ -2338,8 +2340,10 @@ static int _gpiod_direction_output_raw(struct gpio_desc *desc, int value)
if (!ret)
goto set_output_value;
/* Emulate open source by not actively driving the line low */
- if (!val)
- return gpiod_direction_input(desc);
+ if (!val) {
+ ret = gpiod_direction_input(desc);
+ goto set_output_flag;
+ }
} else {
gpio_set_drive_single_ended(gc, gpio_chip_hwgpio(desc),
PIN_CONFIG_DRIVE_PUSH_PULL);
@@ -2359,6 +2363,17 @@ static int _gpiod_direction_output_raw(struct gpio_desc *desc, int value)
trace_gpio_value(desc_to_gpio(desc), 0, val);
trace_gpio_direction(desc_to_gpio(desc), 0, ret);
return ret;
+
+set_output_flag:
+ /*
+ * When emulating open-source or open-drain functionalities by not
+ * actively driving the line (setting mode to input) we still need to
+ * set the IS_OUT flag or otherwise we won't be able to set the line
+ * value anymore.
+ */
+ if (ret == 0)
+ set_bit(FLAG_IS_OUT, &desc->flags);
+ return ret;
}

/**
@@ -2540,8 +2555,6 @@ static void _gpio_set_open_drain_value(struct gpio_desc *desc, bool value)

if (value) {
err = chip->direction_input(chip, offset);
- if (!err)
- clear_bit(FLAG_IS_OUT, &desc->flags);
} else {
err = chip->direction_output(chip, offset, 0);
if (!err)
@@ -2571,8 +2584,6 @@ static void _gpio_set_open_source_value(struct gpio_desc *desc, bool value)
set_bit(FLAG_IS_OUT, &desc->flags);
} else {
err = chip->direction_input(chip, offset);
- if (!err)
- clear_bit(FLAG_IS_OUT, &desc->flags);
}
trace_gpio_direction(desc_to_gpio(desc), !value, err);
if (err < 0)
diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c
index 22426ae4af97..7d1895035af6 100644
--- a/drivers/iio/adc/ad799x.c
+++ b/drivers/iio/adc/ad799x.c
@@ -817,10 +817,10 @@ static int ad799x_probe(struct i2c_client *client,

ret = ad799x_write_config(st, st->chip_config->default_config);
if (ret < 0)
- goto error_disable_reg;
+ goto error_disable_vref;
ret = ad799x_read_config(st);
if (ret < 0)
- goto error_disable_reg;
+ goto error_disable_vref;
st->config = ret;

ret = iio_triggered_buffer_setup(indio_dev, NULL,
diff --git a/drivers/iio/adc/axp288_adc.c b/drivers/iio/adc/axp288_adc.c
index 0153df01e7b6..546bbe59c241 100644
--- a/drivers/iio/adc/axp288_adc.c
+++ b/drivers/iio/adc/axp288_adc.c
@@ -16,6 +16,7 @@
*
*/

+#include <linux/dmi.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
@@ -34,6 +35,11 @@
#define AXP288_ADC_EN_MASK 0xF0
#define AXP288_ADC_TS_ENABLE 0x01

+#define AXP288_ADC_TS_BIAS_MASK GENMASK(5, 4)
+#define AXP288_ADC_TS_BIAS_20UA (0 << 4)
+#define AXP288_ADC_TS_BIAS_40UA (1 << 4)
+#define AXP288_ADC_TS_BIAS_60UA (2 << 4)
+#define AXP288_ADC_TS_BIAS_80UA (3 << 4)
#define AXP288_ADC_TS_CURRENT_ON_OFF_MASK GENMASK(1, 0)
#define AXP288_ADC_TS_CURRENT_OFF (0 << 0)
#define AXP288_ADC_TS_CURRENT_ON_WHEN_CHARGING (1 << 0)
@@ -194,10 +200,36 @@ static int axp288_adc_read_raw(struct iio_dev *indio_dev,
return ret;
}

+/*
+ * We rely on the machine's firmware to correctly setup the TS pin bias current
+ * at boot. This lists systems with broken fw where we need to set it ourselves.
+ */
+static const struct dmi_system_id axp288_adc_ts_bias_override[] = {
+ {
+ /* Lenovo Ideapad 100S (11 inch) */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 100S-11IBY"),
+ },
+ .driver_data = (void *)(uintptr_t)AXP288_ADC_TS_BIAS_80UA,
+ },
+ {}
+};
+
static int axp288_adc_initialize(struct axp288_adc_info *info)
{
+ const struct dmi_system_id *bias_override;
int ret, adc_enable_val;

+ bias_override = dmi_first_match(axp288_adc_ts_bias_override);
+ if (bias_override) {
+ ret = regmap_update_bits(info->regmap, AXP288_ADC_TS_PIN_CTRL,
+ AXP288_ADC_TS_BIAS_MASK,
+ (uintptr_t)bias_override->driver_data);
+ if (ret)
+ return ret;
+ }
+
/*
* Determine if the TS pin is enabled and set the TS current-source
* accordingly.
diff --git a/drivers/iio/adc/hx711.c b/drivers/iio/adc/hx711.c
index 27005d84ed73..0dec733471d5 100644
--- a/drivers/iio/adc/hx711.c
+++ b/drivers/iio/adc/hx711.c
@@ -89,20 +89,35 @@ struct hx711_data {
int gain_set; /* gain set on device */
int gain_chan_a; /* gain for channel A */
struct mutex lock;
+ /*
+ * delay after a rising edge on SCK until the data is ready DOUT
+ * this is dependent on the hx711 where the datasheet tells a
+ * maximum value of 100 ns
+ * but also on potential parasitic capacities on the wiring
+ */
+ u32 data_ready_delay_ns;
+ u32 clock_frequency;
};

static int hx711_cycle(struct hx711_data *hx711_data)
{
- int val;
+ unsigned long flags;

/*
* if preempted for more then 60us while PD_SCK is high:
* hx711 is going in reset
* ==> measuring is false
*/
- preempt_disable();
+ local_irq_save(flags);
gpiod_set_value(hx711_data->gpiod_pd_sck, 1);
- val = gpiod_get_value(hx711_data->gpiod_dout);
+
+ /*
+ * wait until DOUT is ready
+ * it turned out that parasitic capacities are extending the time
+ * until DOUT has reached it's value
+ */
+ ndelay(hx711_data->data_ready_delay_ns);
+
/*
* here we are not waiting for 0.2 us as suggested by the datasheet,
* because the oscilloscope showed in a test scenario
@@ -110,9 +125,16 @@ static int hx711_cycle(struct hx711_data *hx711_data)
* and 0.56 us for PD_SCK low on TI Sitara with 800 MHz
*/
gpiod_set_value(hx711_data->gpiod_pd_sck, 0);
- preempt_enable();
+ local_irq_restore(flags);

- return val;
+ /*
+ * make it a square wave for addressing cases with capacitance on
+ * PC_SCK
+ */
+ ndelay(hx711_data->data_ready_delay_ns);
+
+ /* sample as late as possible */
+ return gpiod_get_value(hx711_data->gpiod_dout);
}

static int hx711_read(struct hx711_data *hx711_data)
@@ -401,6 +423,7 @@ static const struct iio_chan_spec hx711_chan_spec[] = {
static int hx711_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
+ struct device_node *np = dev->of_node;
struct hx711_data *hx711_data;
struct iio_dev *indio_dev;
int ret;
@@ -474,6 +497,22 @@ static int hx711_probe(struct platform_device *pdev)
hx711_data->gain_set = 128;
hx711_data->gain_chan_a = 128;

+ hx711_data->clock_frequency = 400000;
+ ret = of_property_read_u32(np, "clock-frequency",
+ &hx711_data->clock_frequency);
+
+ /*
+ * datasheet says the high level of PD_SCK has a maximum duration
+ * of 50 microseconds
+ */
+ if (hx711_data->clock_frequency < 20000) {
+ dev_warn(dev, "clock-frequency too low - assuming 400 kHz\n");
+ hx711_data->clock_frequency = 400000;
+ }
+
+ hx711_data->data_ready_delay_ns =
+ 1000000000 / hx711_data->clock_frequency;
+
platform_set_drvdata(pdev, indio_dev);

indio_dev->name = "hx711";
diff --git a/drivers/iio/light/opt3001.c b/drivers/iio/light/opt3001.c
index b91ebc3483ce..743fd2cfdd54 100644
--- a/drivers/iio/light/opt3001.c
+++ b/drivers/iio/light/opt3001.c
@@ -695,6 +695,7 @@ static irqreturn_t opt3001_irq(int irq, void *_iio)
struct iio_dev *iio = _iio;
struct opt3001 *opt = iio_priv(iio);
int ret;
+ bool wake_result_ready_queue = false;

if (!opt->ok_to_ignore_lock)
mutex_lock(&opt->lock);
@@ -729,13 +730,16 @@ static irqreturn_t opt3001_irq(int irq, void *_iio)
}
opt->result = ret;
opt->result_ready = true;
- wake_up(&opt->result_ready_queue);
+ wake_result_ready_queue = true;
}

out:
if (!opt->ok_to_ignore_lock)
mutex_unlock(&opt->lock);

+ if (wake_result_ready_queue)
+ wake_up(&opt->result_ready_queue);
+
return IRQ_HANDLED;
}

diff --git a/drivers/media/usb/stkwebcam/stk-webcam.c b/drivers/media/usb/stkwebcam/stk-webcam.c
index c0bba773db25..a7da1356a36e 100644
--- a/drivers/media/usb/stkwebcam/stk-webcam.c
+++ b/drivers/media/usb/stkwebcam/stk-webcam.c
@@ -640,8 +640,7 @@ static int v4l_stk_release(struct file *fp)
dev->owner = NULL;
}

- if (is_present(dev))
- usb_autopm_put_interface(dev->interface);
+ usb_autopm_put_interface(dev->interface);
mutex_unlock(&dev->lock);
return v4l2_fh_release(fp);
}
diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c
index 6d0363deba61..0cbcbad8f074 100644
--- a/drivers/staging/fbtft/fbtft-core.c
+++ b/drivers/staging/fbtft/fbtft-core.c
@@ -828,7 +828,7 @@ struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display,
if (par->gamma.curves && gamma) {
if (fbtft_gamma_parse_str(par,
par->gamma.curves, gamma, strlen(gamma)))
- goto alloc_fail;
+ goto release_framebuf;
}

/* Transmit buffer */
@@ -845,7 +845,7 @@ struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display,
if (txbuflen > 0) {
txbuf = devm_kzalloc(par->info->device, txbuflen, GFP_KERNEL);
if (!txbuf)
- goto alloc_fail;
+ goto release_framebuf;
par->txbuf.buf = txbuf;
par->txbuf.len = txbuflen;
}
@@ -881,6 +881,9 @@ struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display,

return info;

+release_framebuf:
+ framebuffer_release(info);
+
alloc_fail:
vfree(vmem);

diff --git a/drivers/staging/vt6655/device_main.c b/drivers/staging/vt6655/device_main.c
index 84a915199e64..6edd87867ce0 100644
--- a/drivers/staging/vt6655/device_main.c
+++ b/drivers/staging/vt6655/device_main.c
@@ -1668,8 +1668,10 @@ vt6655_probe(struct pci_dev *pcid, const struct pci_device_id *ent)

priv->hw->max_signal = 100;

- if (vnt_init(priv))
+ if (vnt_init(priv)) {
+ device_free_info(priv);
return -ENODEV;
+ }

device_print_info(priv);
pci_set_drvdata(pcid, priv);
diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c
index c9b8d702dadc..2e76eb4c604c 100644
--- a/drivers/tty/serial/uartlite.c
+++ b/drivers/tty/serial/uartlite.c
@@ -746,7 +746,8 @@ static int __init ulite_init(void)
static void __exit ulite_exit(void)
{
platform_driver_unregister(&ulite_platform_driver);
- uart_unregister_driver(&ulite_uart_driver);
+ if (ulite_uart_driver.state)
+ uart_unregister_driver(&ulite_uart_driver);
}

module_init(ulite_init);
diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c
index fb87c17ed6fa..50836f79f908 100644
--- a/drivers/usb/class/usblp.c
+++ b/drivers/usb/class/usblp.c
@@ -474,10 +474,12 @@ static int usblp_release(struct inode *inode, struct file *file)

mutex_lock(&usblp_mutex);
usblp->used = 0;
- if (usblp->present) {
+ if (usblp->present)
usblp_unlink_urbs(usblp);
- usb_autopm_put_interface(usblp->intf);
- } else /* finish cleanup from disconnect */
+
+ usb_autopm_put_interface(usblp->intf);
+
+ if (!usblp->present) /* finish cleanup from disconnect */
usblp_cleanup(usblp);
mutex_unlock(&usblp_mutex);
return 0;
diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c
index f04e91ef9e7c..7e90f786d923 100644
--- a/drivers/usb/gadget/udc/dummy_hcd.c
+++ b/drivers/usb/gadget/udc/dummy_hcd.c
@@ -50,6 +50,7 @@
#define DRIVER_VERSION "02 May 2005"

#define POWER_BUDGET 500 /* in mA; use 8 for low-power port testing */
+#define POWER_BUDGET_3 900 /* in mA */

static const char driver_name[] = "dummy_hcd";
static const char driver_desc[] = "USB Host+Gadget Emulator";
@@ -2439,7 +2440,7 @@ static int dummy_start_ss(struct dummy_hcd *dum_hcd)
dum_hcd->rh_state = DUMMY_RH_RUNNING;
dum_hcd->stream_en_ep = 0;
INIT_LIST_HEAD(&dum_hcd->urbp_list);
- dummy_hcd_to_hcd(dum_hcd)->power_budget = POWER_BUDGET;
+ dummy_hcd_to_hcd(dum_hcd)->power_budget = POWER_BUDGET_3;
dummy_hcd_to_hcd(dum_hcd)->state = HC_STATE_RUNNING;
dummy_hcd_to_hcd(dum_hcd)->uses_new_polling = 1;
#ifdef CONFIG_USB_OTG
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 94a7669ccb80..009b6796f405 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -3223,10 +3223,10 @@ static int xhci_align_td(struct xhci_hcd *xhci, struct urb *urb, u32 enqd_len,
if (usb_urb_dir_out(urb)) {
len = sg_pcopy_to_buffer(urb->sg, urb->num_sgs,
seg->bounce_buf, new_buff_len, enqd_len);
- if (len != seg->bounce_len)
+ if (len != new_buff_len)
xhci_warn(xhci,
"WARN Wrong bounce buffer write length: %zu != %d\n",
- len, seg->bounce_len);
+ len, new_buff_len);
seg->bounce_dma = dma_map_single(dev, seg->bounce_buf,
max_pkt, DMA_TO_DEVICE);
} else {
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 8893d1566765..465d7fd507ad 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -968,7 +968,7 @@ int xhci_suspend(struct xhci_hcd *xhci, bool do_wakeup)
writel(command, &xhci->op_regs->command);
xhci->broken_suspend = 0;
if (xhci_handshake(&xhci->op_regs->status,
- STS_SAVE, 0, 10 * 1000)) {
+ STS_SAVE, 0, 20 * 1000)) {
/*
* AMD SNPS xHC 3.0 occasionally does not clear the
* SSS bit of USBSTS and when driver tries to poll
@@ -1044,6 +1044,18 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
hibernated = true;

if (!hibernated) {
+ /*
+ * Some controllers might lose power during suspend, so wait
+ * for controller not ready bit to clear, just as in xHC init.
+ */
+ retval = xhci_handshake(&xhci->op_regs->status,
+ STS_CNR, 0, 10 * 1000 * 1000);
+ if (retval) {
+ xhci_warn(xhci, "Controller not ready at resume %d\n",
+ retval);
+ spin_unlock_irq(&xhci->lock);
+ return retval;
+ }
/* step 1: restore register */
xhci_restore_registers(xhci);
/* step 2: initialize command ring buffer */
@@ -4491,12 +4503,12 @@ static int xhci_update_timeout_for_endpoint(struct xhci_hcd *xhci,
alt_timeout = xhci_call_host_update_timeout_for_endpoint(xhci, udev,
desc, state, timeout);

- /* If we found we can't enable hub-initiated LPM, or
+ /* If we found we can't enable hub-initiated LPM, and
* the U1 or U2 exit latency was too high to allow
- * device-initiated LPM as well, just stop searching.
+ * device-initiated LPM as well, then we will disable LPM
+ * for this device, so stop searching any further.
*/
- if (alt_timeout == USB3_LPM_DISABLED ||
- alt_timeout == USB3_LPM_DEVICE_INITIATED) {
+ if (alt_timeout == USB3_LPM_DISABLED) {
*timeout = alt_timeout;
return -E2BIG;
}
@@ -4607,10 +4619,12 @@ static u16 xhci_calculate_lpm_timeout(struct usb_hcd *hcd,
if (intf->dev.driver) {
driver = to_usb_driver(intf->dev.driver);
if (driver && driver->disable_hub_initiated_lpm) {
- dev_dbg(&udev->dev, "Hub-initiated %s disabled "
- "at request of driver %s\n",
- state_name, driver->name);
- return xhci_get_timeout_no_hub_lpm(udev, state);
+ dev_dbg(&udev->dev, "Hub-initiated %s disabled at request of driver %s\n",
+ state_name, driver->name);
+ timeout = xhci_get_timeout_no_hub_lpm(udev,
+ state);
+ if (timeout == USB3_LPM_DISABLED)
+ return timeout;
}
}

diff --git a/drivers/usb/image/microtek.c b/drivers/usb/image/microtek.c
index 0b21ba757bba..f5f68866b7fb 100644
--- a/drivers/usb/image/microtek.c
+++ b/drivers/usb/image/microtek.c
@@ -720,6 +720,10 @@ static int mts_usb_probe(struct usb_interface *intf,

}

+ if (ep_in_current != &ep_in_set[2]) {
+ MTS_WARNING("couldn't find two input bulk endpoints. Bailing out.\n");
+ return -ENODEV;
+ }

if ( ep_out == -1 ) {
MTS_WARNING( "couldn't find an output bulk endpoint. Bailing out.\n" );
diff --git a/drivers/usb/misc/Kconfig b/drivers/usb/misc/Kconfig
index 0f9f25db9163..ad78de3cbfaa 100644
--- a/drivers/usb/misc/Kconfig
+++ b/drivers/usb/misc/Kconfig
@@ -46,16 +46,6 @@ config USB_SEVSEG
To compile this driver as a module, choose M here: the
module will be called usbsevseg.

-config USB_RIO500
- tristate "USB Diamond Rio500 support"
- help
- Say Y here if you want to connect a USB Rio500 mp3 player to your
- computer's USB port. Please read <file:Documentation/usb/rio.txt>
- for more information.
-
- To compile this driver as a module, choose M here: the
- module will be called rio500.
-
config USB_LEGOTOWER
tristate "USB Lego Infrared Tower support"
help
diff --git a/drivers/usb/misc/Makefile b/drivers/usb/misc/Makefile
index 109f54f5b9aa..0d416eb624bb 100644
--- a/drivers/usb/misc/Makefile
+++ b/drivers/usb/misc/Makefile
@@ -17,7 +17,6 @@ obj-$(CONFIG_USB_ISIGHTFW) += isight_firmware.o
obj-$(CONFIG_USB_LCD) += usblcd.o
obj-$(CONFIG_USB_LD) += ldusb.o
obj-$(CONFIG_USB_LEGOTOWER) += legousbtower.o
-obj-$(CONFIG_USB_RIO500) += rio500.o
obj-$(CONFIG_USB_TEST) += usbtest.o
obj-$(CONFIG_USB_EHSET_TEST_FIXTURE) += ehset.o
obj-$(CONFIG_USB_TRANCEVIBRATOR) += trancevibrator.o
diff --git a/drivers/usb/misc/adutux.c b/drivers/usb/misc/adutux.c
index 1c0ada75c35d..c8c8fa3f1f46 100644
--- a/drivers/usb/misc/adutux.c
+++ b/drivers/usb/misc/adutux.c
@@ -79,6 +79,7 @@ struct adu_device {
char serial_number[8];

int open_count; /* number of times this port has been opened */
+ unsigned long disconnected:1;

char *read_buffer_primary;
int read_buffer_length;
@@ -120,7 +121,7 @@ static void adu_abort_transfers(struct adu_device *dev)
{
unsigned long flags;

- if (dev->udev == NULL)
+ if (dev->disconnected)
return;

/* shutdown transfer */
@@ -150,6 +151,7 @@ static void adu_delete(struct adu_device *dev)
kfree(dev->read_buffer_secondary);
kfree(dev->interrupt_in_buffer);
kfree(dev->interrupt_out_buffer);
+ usb_put_dev(dev->udev);
kfree(dev);
}

@@ -243,7 +245,7 @@ static int adu_open(struct inode *inode, struct file *file)
}

dev = usb_get_intfdata(interface);
- if (!dev || !dev->udev) {
+ if (!dev) {
retval = -ENODEV;
goto exit_no_device;
}
@@ -326,7 +328,7 @@ static int adu_release(struct inode *inode, struct file *file)
}

adu_release_internal(dev);
- if (dev->udev == NULL) {
+ if (dev->disconnected) {
/* the device was unplugged before the file was released */
if (!dev->open_count) /* ... and we're the last user */
adu_delete(dev);
@@ -355,7 +357,7 @@ static ssize_t adu_read(struct file *file, __user char *buffer, size_t count,
return -ERESTARTSYS;

/* verify that the device wasn't unplugged */
- if (dev->udev == NULL) {
+ if (dev->disconnected) {
retval = -ENODEV;
pr_err("No device or device unplugged %d\n", retval);
goto exit;
@@ -520,7 +522,7 @@ static ssize_t adu_write(struct file *file, const __user char *buffer,
goto exit_nolock;

/* verify that the device wasn't unplugged */
- if (dev->udev == NULL) {
+ if (dev->disconnected) {
retval = -ENODEV;
pr_err("No device or device unplugged %d\n", retval);
goto exit;
@@ -665,7 +667,7 @@ static int adu_probe(struct usb_interface *interface,

mutex_init(&dev->mtx);
spin_lock_init(&dev->buflock);
- dev->udev = udev;
+ dev->udev = usb_get_dev(udev);
init_waitqueue_head(&dev->read_wait);
init_waitqueue_head(&dev->write_wait);

@@ -761,19 +763,21 @@ static int adu_probe(struct usb_interface *interface,
static void adu_disconnect(struct usb_interface *interface)
{
struct adu_device *dev;
- int minor;

dev = usb_get_intfdata(interface);

- mutex_lock(&dev->mtx); /* not interruptible */
- dev->udev = NULL; /* poison */
- minor = dev->minor;
usb_deregister_dev(interface, &adu_class);
- mutex_unlock(&dev->mtx);
+
+ usb_poison_urb(dev->interrupt_in_urb);
+ usb_poison_urb(dev->interrupt_out_urb);

mutex_lock(&adutux_mutex);
usb_set_intfdata(interface, NULL);

+ mutex_lock(&dev->mtx); /* not interruptible */
+ dev->disconnected = 1;
+ mutex_unlock(&dev->mtx);
+
/* if the device is not opened, then we clean up right now */
if (!dev->open_count)
adu_delete(dev);
diff --git a/drivers/usb/misc/chaoskey.c b/drivers/usb/misc/chaoskey.c
index abec6e604a62..eb0795c5ff7a 100644
--- a/drivers/usb/misc/chaoskey.c
+++ b/drivers/usb/misc/chaoskey.c
@@ -106,6 +106,7 @@ static void chaoskey_free(struct chaoskey *dev)
usb_free_urb(dev->urb);
kfree(dev->name);
kfree(dev->buf);
+ usb_put_intf(dev->interface);
kfree(dev);
}
}
@@ -153,6 +154,8 @@ static int chaoskey_probe(struct usb_interface *interface,
if (dev == NULL)
goto out;

+ dev->interface = usb_get_intf(interface);
+
dev->buf = kmalloc(size, GFP_KERNEL);

if (dev->buf == NULL)
@@ -186,8 +189,6 @@ static int chaoskey_probe(struct usb_interface *interface,
strcat(dev->name, udev->serial);
}

- dev->interface = interface;
-
dev->in_ep = in_ep;

if (le16_to_cpu(udev->descriptor.idVendor) != ALEA_VENDOR_ID)
diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c
index 43bee6dad5c9..7f226cc3ef8a 100644
--- a/drivers/usb/misc/iowarrior.c
+++ b/drivers/usb/misc/iowarrior.c
@@ -87,6 +87,7 @@ struct iowarrior {
char chip_serial[9]; /* the serial number string of the chip connected */
int report_size; /* number of bytes in a report */
u16 product_id;
+ struct usb_anchor submitted;
};

/*--------------*/
@@ -246,6 +247,7 @@ static inline void iowarrior_delete(struct iowarrior *dev)
kfree(dev->int_in_buffer);
usb_free_urb(dev->int_in_urb);
kfree(dev->read_queue);
+ usb_put_intf(dev->interface);
kfree(dev);
}

@@ -427,11 +429,13 @@ static ssize_t iowarrior_write(struct file *file,
retval = -EFAULT;
goto error;
}
+ usb_anchor_urb(int_out_urb, &dev->submitted);
retval = usb_submit_urb(int_out_urb, GFP_KERNEL);
if (retval) {
dev_dbg(&dev->interface->dev,
"submit error %d for urb nr.%d\n",
retval, atomic_read(&dev->write_busy));
+ usb_unanchor_urb(int_out_urb);
goto error;
}
/* submit was ok */
@@ -768,11 +772,13 @@ static int iowarrior_probe(struct usb_interface *interface,
init_waitqueue_head(&dev->write_wait);

dev->udev = udev;
- dev->interface = interface;
+ dev->interface = usb_get_intf(interface);

iface_desc = interface->cur_altsetting;
dev->product_id = le16_to_cpu(udev->descriptor.idProduct);

+ init_usb_anchor(&dev->submitted);
+
res = usb_find_last_int_in_endpoint(iface_desc, &dev->int_in_endpoint);
if (res) {
dev_err(&interface->dev, "no interrupt-in endpoint found\n");
@@ -870,8 +876,6 @@ static void iowarrior_disconnect(struct usb_interface *interface)
dev = usb_get_intfdata(interface);
mutex_lock(&iowarrior_open_disc_lock);
usb_set_intfdata(interface, NULL);
- /* prevent device read, write and ioctl */
- dev->present = 0;

minor = dev->minor;
mutex_unlock(&iowarrior_open_disc_lock);
@@ -882,8 +886,7 @@ static void iowarrior_disconnect(struct usb_interface *interface)
mutex_lock(&dev->mutex);

/* prevent device read, write and ioctl */
-
- mutex_unlock(&dev->mutex);
+ dev->present = 0;

if (dev->opened) {
/* There is a process that holds a filedescriptor to the device ,
@@ -891,10 +894,13 @@ static void iowarrior_disconnect(struct usb_interface *interface)
Deleting the device is postponed until close() was called.
*/
usb_kill_urb(dev->int_in_urb);
+ usb_kill_anchored_urbs(&dev->submitted);
wake_up_interruptible(&dev->read_wait);
wake_up_interruptible(&dev->write_wait);
+ mutex_unlock(&dev->mutex);
} else {
/* no process is using the device, cleanup now */
+ mutex_unlock(&dev->mutex);
iowarrior_delete(dev);
}

diff --git a/drivers/usb/misc/ldusb.c b/drivers/usb/misc/ldusb.c
index 6635a3c990f6..fa5cf349ae19 100644
--- a/drivers/usb/misc/ldusb.c
+++ b/drivers/usb/misc/ldusb.c
@@ -157,6 +157,7 @@ MODULE_PARM_DESC(min_interrupt_out_interval, "Minimum interrupt out interval in
struct ld_usb {
struct mutex mutex; /* locks this structure */
struct usb_interface *intf; /* save off the usb interface pointer */
+ unsigned long disconnected:1;

int open_count; /* number of times this port has been opened */

@@ -196,12 +197,10 @@ static void ld_usb_abort_transfers(struct ld_usb *dev)
/* shutdown transfer */
if (dev->interrupt_in_running) {
dev->interrupt_in_running = 0;
- if (dev->intf)
- usb_kill_urb(dev->interrupt_in_urb);
+ usb_kill_urb(dev->interrupt_in_urb);
}
if (dev->interrupt_out_busy)
- if (dev->intf)
- usb_kill_urb(dev->interrupt_out_urb);
+ usb_kill_urb(dev->interrupt_out_urb);
}

/**
@@ -209,8 +208,6 @@ static void ld_usb_abort_transfers(struct ld_usb *dev)
*/
static void ld_usb_delete(struct ld_usb *dev)
{
- ld_usb_abort_transfers(dev);
-
/* free data structures */
usb_free_urb(dev->interrupt_in_urb);
usb_free_urb(dev->interrupt_out_urb);
@@ -266,7 +263,7 @@ static void ld_usb_interrupt_in_callback(struct urb *urb)

resubmit:
/* resubmit if we're still running */
- if (dev->interrupt_in_running && !dev->buffer_overflow && dev->intf) {
+ if (dev->interrupt_in_running && !dev->buffer_overflow) {
retval = usb_submit_urb(dev->interrupt_in_urb, GFP_ATOMIC);
if (retval) {
dev_err(&dev->intf->dev,
@@ -395,7 +392,7 @@ static int ld_usb_release(struct inode *inode, struct file *file)
retval = -ENODEV;
goto unlock_exit;
}
- if (dev->intf == NULL) {
+ if (dev->disconnected) {
/* the device was unplugged before the file was released */
mutex_unlock(&dev->mutex);
/* unlock here as ld_usb_delete frees dev */
@@ -426,7 +423,7 @@ static unsigned int ld_usb_poll(struct file *file, poll_table *wait)

dev = file->private_data;

- if (!dev->intf)
+ if (dev->disconnected)
return POLLERR | POLLHUP;

poll_wait(file, &dev->read_wait, wait);
@@ -465,7 +462,7 @@ static ssize_t ld_usb_read(struct file *file, char __user *buffer, size_t count,
}

/* verify that the device wasn't unplugged */
- if (dev->intf == NULL) {
+ if (dev->disconnected) {
retval = -ENODEV;
printk(KERN_ERR "ldusb: No device or device unplugged %d\n", retval);
goto unlock_exit;
@@ -545,7 +542,7 @@ static ssize_t ld_usb_write(struct file *file, const char __user *buffer,
}

/* verify that the device wasn't unplugged */
- if (dev->intf == NULL) {
+ if (dev->disconnected) {
retval = -ENODEV;
printk(KERN_ERR "ldusb: No device or device unplugged %d\n", retval);
goto unlock_exit;
@@ -762,6 +759,9 @@ static void ld_usb_disconnect(struct usb_interface *intf)
/* give back our minor */
usb_deregister_dev(intf, &ld_usb_class);

+ usb_poison_urb(dev->interrupt_in_urb);
+ usb_poison_urb(dev->interrupt_out_urb);
+
mutex_lock(&dev->mutex);

/* if the device is not opened, then we clean up right now */
@@ -769,7 +769,7 @@ static void ld_usb_disconnect(struct usb_interface *intf)
mutex_unlock(&dev->mutex);
ld_usb_delete(dev);
} else {
- dev->intf = NULL;
+ dev->disconnected = 1;
/* wake up pollers */
wake_up_interruptible_all(&dev->read_wait);
wake_up_interruptible_all(&dev->write_wait);
diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c
index 5628f678ab59..155615aadc9c 100644
--- a/drivers/usb/misc/legousbtower.c
+++ b/drivers/usb/misc/legousbtower.c
@@ -183,7 +183,6 @@ static const struct usb_device_id tower_table[] = {
};

MODULE_DEVICE_TABLE (usb, tower_table);
-static DEFINE_MUTEX(open_disc_mutex);

#define LEGO_USB_TOWER_MINOR_BASE 160

@@ -195,6 +194,7 @@ struct lego_usb_tower {
unsigned char minor; /* the starting minor number for this device */

int open_count; /* number of times this port has been opened */
+ unsigned long disconnected:1;

char* read_buffer;
size_t read_buffer_length; /* this much came in */
@@ -294,14 +294,13 @@ static inline void lego_usb_tower_debug_data(struct device *dev,
*/
static inline void tower_delete (struct lego_usb_tower *dev)
{
- tower_abort_transfers (dev);
-
/* free data structures */
usb_free_urb(dev->interrupt_in_urb);
usb_free_urb(dev->interrupt_out_urb);
kfree (dev->read_buffer);
kfree (dev->interrupt_in_buffer);
kfree (dev->interrupt_out_buffer);
+ usb_put_dev(dev->udev);
kfree (dev);
}

@@ -336,18 +335,14 @@ static int tower_open (struct inode *inode, struct file *file)
goto exit;
}

- mutex_lock(&open_disc_mutex);
dev = usb_get_intfdata(interface);
-
if (!dev) {
- mutex_unlock(&open_disc_mutex);
retval = -ENODEV;
goto exit;
}

/* lock this device */
if (mutex_lock_interruptible(&dev->lock)) {
- mutex_unlock(&open_disc_mutex);
retval = -ERESTARTSYS;
goto exit;
}
@@ -355,12 +350,9 @@ static int tower_open (struct inode *inode, struct file *file)

/* allow opening only once */
if (dev->open_count) {
- mutex_unlock(&open_disc_mutex);
retval = -EBUSY;
goto unlock_exit;
}
- dev->open_count = 1;
- mutex_unlock(&open_disc_mutex);

/* reset the tower */
result = usb_control_msg (dev->udev,
@@ -400,13 +392,14 @@ static int tower_open (struct inode *inode, struct file *file)
dev_err(&dev->udev->dev,
"Couldn't submit interrupt_in_urb %d\n", retval);
dev->interrupt_in_running = 0;
- dev->open_count = 0;
goto unlock_exit;
}

/* save device in the file's private structure */
file->private_data = dev;

+ dev->open_count = 1;
+
unlock_exit:
mutex_unlock(&dev->lock);

@@ -427,10 +420,9 @@ static int tower_release (struct inode *inode, struct file *file)

if (dev == NULL) {
retval = -ENODEV;
- goto exit_nolock;
+ goto exit;
}

- mutex_lock(&open_disc_mutex);
if (mutex_lock_interruptible(&dev->lock)) {
retval = -ERESTARTSYS;
goto exit;
@@ -442,7 +434,8 @@ static int tower_release (struct inode *inode, struct file *file)
retval = -ENODEV;
goto unlock_exit;
}
- if (dev->udev == NULL) {
+
+ if (dev->disconnected) {
/* the device was unplugged before the file was released */

/* unlock here as tower_delete frees dev */
@@ -460,10 +453,7 @@ static int tower_release (struct inode *inode, struct file *file)

unlock_exit:
mutex_unlock(&dev->lock);
-
exit:
- mutex_unlock(&open_disc_mutex);
-exit_nolock:
return retval;
}

@@ -481,10 +471,9 @@ static void tower_abort_transfers (struct lego_usb_tower *dev)
if (dev->interrupt_in_running) {
dev->interrupt_in_running = 0;
mb();
- if (dev->udev)
- usb_kill_urb (dev->interrupt_in_urb);
+ usb_kill_urb(dev->interrupt_in_urb);
}
- if (dev->interrupt_out_busy && dev->udev)
+ if (dev->interrupt_out_busy)
usb_kill_urb(dev->interrupt_out_urb);
}

@@ -520,7 +509,7 @@ static unsigned int tower_poll (struct file *file, poll_table *wait)

dev = file->private_data;

- if (!dev->udev)
+ if (dev->disconnected)
return POLLERR | POLLHUP;

poll_wait(file, &dev->read_wait, wait);
@@ -567,7 +556,7 @@ static ssize_t tower_read (struct file *file, char __user *buffer, size_t count,
}

/* verify that the device wasn't unplugged */
- if (dev->udev == NULL) {
+ if (dev->disconnected) {
retval = -ENODEV;
pr_err("No device or device unplugged %d\n", retval);
goto unlock_exit;
@@ -653,7 +642,7 @@ static ssize_t tower_write (struct file *file, const char __user *buffer, size_t
}

/* verify that the device wasn't unplugged */
- if (dev->udev == NULL) {
+ if (dev->disconnected) {
retval = -ENODEV;
pr_err("No device or device unplugged %d\n", retval);
goto unlock_exit;
@@ -762,7 +751,7 @@ static void tower_interrupt_in_callback (struct urb *urb)

resubmit:
/* resubmit if we're still running */
- if (dev->interrupt_in_running && dev->udev) {
+ if (dev->interrupt_in_running) {
retval = usb_submit_urb (dev->interrupt_in_urb, GFP_ATOMIC);
if (retval)
dev_err(&dev->udev->dev,
@@ -825,8 +814,9 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device

mutex_init(&dev->lock);

- dev->udev = udev;
+ dev->udev = usb_get_dev(udev);
dev->open_count = 0;
+ dev->disconnected = 0;

dev->read_buffer = NULL;
dev->read_buffer_length = 0;
@@ -894,8 +884,10 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device
get_version_reply,
sizeof(*get_version_reply),
1000);
- if (result < 0) {
- dev_err(idev, "LEGO USB Tower get version control request failed\n");
+ if (result < sizeof(*get_version_reply)) {
+ if (result >= 0)
+ result = -EIO;
+ dev_err(idev, "get version request failed: %d\n", result);
retval = result;
goto error;
}
@@ -913,7 +905,6 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device
if (retval) {
/* something prevented us from registering this driver */
dev_err(idev, "Not able to get a minor for this device.\n");
- usb_set_intfdata (interface, NULL);
goto error;
}
dev->minor = interface->minor;
@@ -945,23 +936,24 @@ static void tower_disconnect (struct usb_interface *interface)
int minor;

dev = usb_get_intfdata (interface);
- mutex_lock(&open_disc_mutex);
- usb_set_intfdata (interface, NULL);

minor = dev->minor;

- /* give back our minor */
+ /* give back our minor and prevent further open() */
usb_deregister_dev (interface, &tower_class);

+ /* stop I/O */
+ usb_poison_urb(dev->interrupt_in_urb);
+ usb_poison_urb(dev->interrupt_out_urb);
+
mutex_lock(&dev->lock);
- mutex_unlock(&open_disc_mutex);

/* if the device is not opened, then we clean up right now */
if (!dev->open_count) {
mutex_unlock(&dev->lock);
tower_delete (dev);
} else {
- dev->udev = NULL;
+ dev->disconnected = 1;
/* wake up pollers */
wake_up_interruptible_all(&dev->read_wait);
wake_up_interruptible_all(&dev->write_wait);
diff --git a/drivers/usb/misc/rio500.c b/drivers/usb/misc/rio500.c
deleted file mode 100644
index c652a4fdc546..000000000000
--- a/drivers/usb/misc/rio500.c
+++ /dev/null
@@ -1,574 +0,0 @@
-/* -*- linux-c -*- */
-
-/*
- * Driver for USB Rio 500
- *
- * Cesar Miquel (miquel@df.uba.ar)
- *
- * based on hp_scanner.c by David E. Nelson (dnelson@jump.net)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Based upon mouse.c (Brad Keryan) and printer.c (Michael Gee).
- *
- * Changelog:
- * 30/05/2003 replaced lock/unlock kernel with up/down
- * Daniele Bellucci bellucda@tiscali.it
- * */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/signal.h>
-#include <linux/sched/signal.h>
-#include <linux/mutex.h>
-#include <linux/errno.h>
-#include <linux/random.h>
-#include <linux/poll.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/usb.h>
-#include <linux/wait.h>
-
-#include "rio500_usb.h"
-
-#define DRIVER_AUTHOR "Cesar Miquel <miquel@df.uba.ar>"
-#define DRIVER_DESC "USB Rio 500 driver"
-
-#define RIO_MINOR 64
-
-/* stall/wait timeout for rio */
-#define NAK_TIMEOUT (HZ)
-
-#define IBUF_SIZE 0x1000
-
-/* Size of the rio buffer */
-#define OBUF_SIZE 0x10000
-
-struct rio_usb_data {
- struct usb_device *rio_dev; /* init: probe_rio */
- unsigned int ifnum; /* Interface number of the USB device */
- int isopen; /* nz if open */
- int present; /* Device is present on the bus */
- char *obuf, *ibuf; /* transfer buffers */
- char bulk_in_ep, bulk_out_ep; /* Endpoint assignments */
- wait_queue_head_t wait_q; /* for timeouts */
- struct mutex lock; /* general race avoidance */
-};
-
-static DEFINE_MUTEX(rio500_mutex);
-static struct rio_usb_data rio_instance;
-
-static int open_rio(struct inode *inode, struct file *file)
-{
- struct rio_usb_data *rio = &rio_instance;
-
- /* against disconnect() */
- mutex_lock(&rio500_mutex);
- mutex_lock(&(rio->lock));
-
- if (rio->isopen || !rio->present) {
- mutex_unlock(&(rio->lock));
- mutex_unlock(&rio500_mutex);
- return -EBUSY;
- }
- rio->isopen = 1;
-
- init_waitqueue_head(&rio->wait_q);
-
- mutex_unlock(&(rio->lock));
-
- dev_info(&rio->rio_dev->dev, "Rio opened.\n");
- mutex_unlock(&rio500_mutex);
-
- return 0;
-}
-
-static int close_rio(struct inode *inode, struct file *file)
-{
- struct rio_usb_data *rio = &rio_instance;
-
- /* against disconnect() */
- mutex_lock(&rio500_mutex);
- mutex_lock(&(rio->lock));
-
- rio->isopen = 0;
- if (!rio->present) {
- /* cleanup has been delayed */
- kfree(rio->ibuf);
- kfree(rio->obuf);
- rio->ibuf = NULL;
- rio->obuf = NULL;
- } else {
- dev_info(&rio->rio_dev->dev, "Rio closed.\n");
- }
- mutex_unlock(&(rio->lock));
- mutex_unlock(&rio500_mutex);
- return 0;
-}
-
-static long ioctl_rio(struct file *file, unsigned int cmd, unsigned long arg)
-{
- struct RioCommand rio_cmd;
- struct rio_usb_data *rio = &rio_instance;
- void __user *data;
- unsigned char *buffer;
- int result, requesttype;
- int retries;
- int retval=0;
-
- mutex_lock(&(rio->lock));
- /* Sanity check to make sure rio is connected, powered, etc */
- if (rio->present == 0 || rio->rio_dev == NULL) {
- retval = -ENODEV;
- goto err_out;
- }
-
- switch (cmd) {
- case RIO_RECV_COMMAND:
- data = (void __user *) arg;
- if (data == NULL)
- break;
- if (copy_from_user(&rio_cmd, data, sizeof(struct RioCommand))) {
- retval = -EFAULT;
- goto err_out;
- }
- if (rio_cmd.length < 0 || rio_cmd.length > PAGE_SIZE) {
- retval = -EINVAL;
- goto err_out;
- }
- buffer = (unsigned char *) __get_free_page(GFP_KERNEL);
- if (buffer == NULL) {
- retval = -ENOMEM;
- goto err_out;
- }
- if (copy_from_user(buffer, rio_cmd.buffer, rio_cmd.length)) {
- retval = -EFAULT;
- free_page((unsigned long) buffer);
- goto err_out;
- }
-
- requesttype = rio_cmd.requesttype | USB_DIR_IN |
- USB_TYPE_VENDOR | USB_RECIP_DEVICE;
- dev_dbg(&rio->rio_dev->dev,
- "sending command:reqtype=%0x req=%0x value=%0x index=%0x len=%0x\n",
- requesttype, rio_cmd.request, rio_cmd.value,
- rio_cmd.index, rio_cmd.length);
- /* Send rio control message */
- retries = 3;
- while (retries) {
- result = usb_control_msg(rio->rio_dev,
- usb_rcvctrlpipe(rio-> rio_dev, 0),
- rio_cmd.request,
- requesttype,
- rio_cmd.value,
- rio_cmd.index, buffer,
- rio_cmd.length,
- jiffies_to_msecs(rio_cmd.timeout));
- if (result == -ETIMEDOUT)
- retries--;
- else if (result < 0) {
- dev_err(&rio->rio_dev->dev,
- "Error executing ioctrl. code = %d\n",
- result);
- retries = 0;
- } else {
- dev_dbg(&rio->rio_dev->dev,
- "Executed ioctl. Result = %d (data=%02x)\n",
- result, buffer[0]);
- if (copy_to_user(rio_cmd.buffer, buffer,
- rio_cmd.length)) {
- free_page((unsigned long) buffer);
- retval = -EFAULT;
- goto err_out;
- }
- retries = 0;
- }
-
- /* rio_cmd.buffer contains a raw stream of single byte
- data which has been returned from rio. Data is
- interpreted at application level. For data that
- will be cast to data types longer than 1 byte, data
- will be little_endian and will potentially need to
- be swapped at the app level */
-
- }
- free_page((unsigned long) buffer);
- break;
-
- case RIO_SEND_COMMAND:
- data = (void __user *) arg;
- if (data == NULL)
- break;
- if (copy_from_user(&rio_cmd, data, sizeof(struct RioCommand))) {
- retval = -EFAULT;
- goto err_out;
- }
- if (rio_cmd.length < 0 || rio_cmd.length > PAGE_SIZE) {
- retval = -EINVAL;
- goto err_out;
- }
- buffer = (unsigned char *) __get_free_page(GFP_KERNEL);
- if (buffer == NULL) {
- retval = -ENOMEM;
- goto err_out;
- }
- if (copy_from_user(buffer, rio_cmd.buffer, rio_cmd.length)) {
- free_page((unsigned long)buffer);
- retval = -EFAULT;
- goto err_out;
- }
-
- requesttype = rio_cmd.requesttype | USB_DIR_OUT |
- USB_TYPE_VENDOR | USB_RECIP_DEVICE;
- dev_dbg(&rio->rio_dev->dev,
- "sending command: reqtype=%0x req=%0x value=%0x index=%0x len=%0x\n",
- requesttype, rio_cmd.request, rio_cmd.value,
- rio_cmd.index, rio_cmd.length);
- /* Send rio control message */
- retries = 3;
- while (retries) {
- result = usb_control_msg(rio->rio_dev,
- usb_sndctrlpipe(rio-> rio_dev, 0),
- rio_cmd.request,
- requesttype,
- rio_cmd.value,
- rio_cmd.index, buffer,
- rio_cmd.length,
- jiffies_to_msecs(rio_cmd.timeout));
- if (result == -ETIMEDOUT)
- retries--;
- else if (result < 0) {
- dev_err(&rio->rio_dev->dev,
- "Error executing ioctrl. code = %d\n",
- result);
- retries = 0;
- } else {
- dev_dbg(&rio->rio_dev->dev,
- "Executed ioctl. Result = %d\n", result);
- retries = 0;
-
- }
-
- }
- free_page((unsigned long) buffer);
- break;
-
- default:
- retval = -ENOTTY;
- break;
- }
-
-
-err_out:
- mutex_unlock(&(rio->lock));
- return retval;
-}
-
-static ssize_t
-write_rio(struct file *file, const char __user *buffer,
- size_t count, loff_t * ppos)
-{
- DEFINE_WAIT(wait);
- struct rio_usb_data *rio = &rio_instance;
-
- unsigned long copy_size;
- unsigned long bytes_written = 0;
- unsigned int partial;
-
- int result = 0;
- int maxretry;
- int errn = 0;
- int intr;
-
- intr = mutex_lock_interruptible(&(rio->lock));
- if (intr)
- return -EINTR;
- /* Sanity check to make sure rio is connected, powered, etc */
- if (rio->present == 0 || rio->rio_dev == NULL) {
- mutex_unlock(&(rio->lock));
- return -ENODEV;
- }
-
-
-
- do {
- unsigned long thistime;
- char *obuf = rio->obuf;
-
- thistime = copy_size =
- (count >= OBUF_SIZE) ? OBUF_SIZE : count;
- if (copy_from_user(rio->obuf, buffer, copy_size)) {
- errn = -EFAULT;
- goto error;
- }
- maxretry = 5;
- while (thistime) {
- if (!rio->rio_dev) {
- errn = -ENODEV;
- goto error;
- }
- if (signal_pending(current)) {
- mutex_unlock(&(rio->lock));
- return bytes_written ? bytes_written : -EINTR;
- }
-
- result = usb_bulk_msg(rio->rio_dev,
- usb_sndbulkpipe(rio->rio_dev, 2),
- obuf, thistime, &partial, 5000);
-
- dev_dbg(&rio->rio_dev->dev,
- "write stats: result:%d thistime:%lu partial:%u\n",
- result, thistime, partial);
-
- if (result == -ETIMEDOUT) { /* NAK - so hold for a while */
- if (!maxretry--) {
- errn = -ETIME;
- goto error;
- }
- prepare_to_wait(&rio->wait_q, &wait, TASK_INTERRUPTIBLE);
- schedule_timeout(NAK_TIMEOUT);
- finish_wait(&rio->wait_q, &wait);
- continue;
- } else if (!result && partial) {
- obuf += partial;
- thistime -= partial;
- } else
- break;
- }
- if (result) {
- dev_err(&rio->rio_dev->dev, "Write Whoops - %x\n",
- result);
- errn = -EIO;
- goto error;
- }
- bytes_written += copy_size;
- count -= copy_size;
- buffer += copy_size;
- } while (count > 0);
-
- mutex_unlock(&(rio->lock));
-
- return bytes_written ? bytes_written : -EIO;
-
-error:
- mutex_unlock(&(rio->lock));
- return errn;
-}
-
-static ssize_t
-read_rio(struct file *file, char __user *buffer, size_t count, loff_t * ppos)
-{
- DEFINE_WAIT(wait);
- struct rio_usb_data *rio = &rio_instance;
- ssize_t read_count;
- unsigned int partial;
- int this_read;
- int result;
- int maxretry = 10;
- char *ibuf;
- int intr;
-
- intr = mutex_lock_interruptible(&(rio->lock));
- if (intr)
- return -EINTR;
- /* Sanity check to make sure rio is connected, powered, etc */
- if (rio->present == 0 || rio->rio_dev == NULL) {
- mutex_unlock(&(rio->lock));
- return -ENODEV;
- }
-
- ibuf = rio->ibuf;
-
- read_count = 0;
-
-
- while (count > 0) {
- if (signal_pending(current)) {
- mutex_unlock(&(rio->lock));
- return read_count ? read_count : -EINTR;
- }
- if (!rio->rio_dev) {
- mutex_unlock(&(rio->lock));
- return -ENODEV;
- }
- this_read = (count >= IBUF_SIZE) ? IBUF_SIZE : count;
-
- result = usb_bulk_msg(rio->rio_dev,
- usb_rcvbulkpipe(rio->rio_dev, 1),
- ibuf, this_read, &partial,
- 8000);
-
- dev_dbg(&rio->rio_dev->dev,
- "read stats: result:%d this_read:%u partial:%u\n",
- result, this_read, partial);
-
- if (partial) {
- count = this_read = partial;
- } else if (result == -ETIMEDOUT || result == 15) { /* FIXME: 15 ??? */
- if (!maxretry--) {
- mutex_unlock(&(rio->lock));
- dev_err(&rio->rio_dev->dev,
- "read_rio: maxretry timeout\n");
- return -ETIME;
- }
- prepare_to_wait(&rio->wait_q, &wait, TASK_INTERRUPTIBLE);
- schedule_timeout(NAK_TIMEOUT);
- finish_wait(&rio->wait_q, &wait);
- continue;
- } else if (result != -EREMOTEIO) {
- mutex_unlock(&(rio->lock));
- dev_err(&rio->rio_dev->dev,
- "Read Whoops - result:%d partial:%u this_read:%u\n",
- result, partial, this_read);
- return -EIO;
- } else {
- mutex_unlock(&(rio->lock));
- return (0);
- }
-
- if (this_read) {
- if (copy_to_user(buffer, ibuf, this_read)) {
- mutex_unlock(&(rio->lock));
- return -EFAULT;
- }
- count -= this_read;
- read_count += this_read;
- buffer += this_read;
- }
- }
- mutex_unlock(&(rio->lock));
- return read_count;
-}
-
-static const struct file_operations usb_rio_fops = {
- .owner = THIS_MODULE,
- .read = read_rio,
- .write = write_rio,
- .unlocked_ioctl = ioctl_rio,
- .open = open_rio,
- .release = close_rio,
- .llseek = noop_llseek,
-};
-
-static struct usb_class_driver usb_rio_class = {
- .name = "rio500%d",
- .fops = &usb_rio_fops,
- .minor_base = RIO_MINOR,
-};
-
-static int probe_rio(struct usb_interface *intf,
- const struct usb_device_id *id)
-{
- struct usb_device *dev = interface_to_usbdev(intf);
- struct rio_usb_data *rio = &rio_instance;
- int retval = 0;
-
- mutex_lock(&rio500_mutex);
- if (rio->present) {
- dev_info(&intf->dev, "Second USB Rio at address %d refused\n", dev->devnum);
- retval = -EBUSY;
- goto bail_out;
- } else {
- dev_info(&intf->dev, "USB Rio found at address %d\n", dev->devnum);
- }
-
- retval = usb_register_dev(intf, &usb_rio_class);
- if (retval) {
- dev_err(&dev->dev,
- "Not able to get a minor for this device.\n");
- retval = -ENOMEM;
- goto bail_out;
- }
-
- rio->rio_dev = dev;
-
- if (!(rio->obuf = kmalloc(OBUF_SIZE, GFP_KERNEL))) {
- dev_err(&dev->dev,
- "probe_rio: Not enough memory for the output buffer\n");
- usb_deregister_dev(intf, &usb_rio_class);
- retval = -ENOMEM;
- goto bail_out;
- }
- dev_dbg(&intf->dev, "obuf address:%p\n", rio->obuf);
-
- if (!(rio->ibuf = kmalloc(IBUF_SIZE, GFP_KERNEL))) {
- dev_err(&dev->dev,
- "probe_rio: Not enough memory for the input buffer\n");
- usb_deregister_dev(intf, &usb_rio_class);
- kfree(rio->obuf);
- retval = -ENOMEM;
- goto bail_out;
- }
- dev_dbg(&intf->dev, "ibuf address:%p\n", rio->ibuf);
-
- mutex_init(&(rio->lock));
-
- usb_set_intfdata (intf, rio);
- rio->present = 1;
-bail_out:
- mutex_unlock(&rio500_mutex);
-
- return retval;
-}
-
-static void disconnect_rio(struct usb_interface *intf)
-{
- struct rio_usb_data *rio = usb_get_intfdata (intf);
-
- usb_set_intfdata (intf, NULL);
- mutex_lock(&rio500_mutex);
- if (rio) {
- usb_deregister_dev(intf, &usb_rio_class);
-
- mutex_lock(&(rio->lock));
- if (rio->isopen) {
- rio->isopen = 0;
- /* better let it finish - the release will do whats needed */
- rio->rio_dev = NULL;
- mutex_unlock(&(rio->lock));
- mutex_unlock(&rio500_mutex);
- return;
- }
- kfree(rio->ibuf);
- kfree(rio->obuf);
-
- dev_info(&intf->dev, "USB Rio disconnected.\n");
-
- rio->present = 0;
- mutex_unlock(&(rio->lock));
- }
- mutex_unlock(&rio500_mutex);
-}
-
-static const struct usb_device_id rio_table[] = {
- { USB_DEVICE(0x0841, 1) }, /* Rio 500 */
- { } /* Terminating entry */
-};
-
-MODULE_DEVICE_TABLE (usb, rio_table);
-
-static struct usb_driver rio_driver = {
- .name = "rio500",
- .probe = probe_rio,
- .disconnect = disconnect_rio,
- .id_table = rio_table,
-};
-
-module_usb_driver(rio_driver);
-
-MODULE_AUTHOR( DRIVER_AUTHOR );
-MODULE_DESCRIPTION( DRIVER_DESC );
-MODULE_LICENSE("GPL");
-
diff --git a/drivers/usb/misc/rio500_usb.h b/drivers/usb/misc/rio500_usb.h
deleted file mode 100644
index 359abc98e706..000000000000
--- a/drivers/usb/misc/rio500_usb.h
+++ /dev/null
@@ -1,37 +0,0 @@
-/* ----------------------------------------------------------------------
-
- Copyright (C) 2000 Cesar Miquel (miquel@df.uba.ar)
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- ---------------------------------------------------------------------- */
-
-
-
-#define RIO_SEND_COMMAND 0x1
-#define RIO_RECV_COMMAND 0x2
-
-#define RIO_DIR_OUT 0x0
-#define RIO_DIR_IN 0x1
-
-struct RioCommand {
- short length;
- int request;
- int requesttype;
- int value;
- int index;
- void __user *buffer;
- int timeout;
-};
diff --git a/drivers/usb/misc/usblcd.c b/drivers/usb/misc/usblcd.c
index 0f5ad896c7e3..6a50e22e0a72 100644
--- a/drivers/usb/misc/usblcd.c
+++ b/drivers/usb/misc/usblcd.c
@@ -17,6 +17,7 @@
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/mutex.h>
+#include <linux/rwsem.h>
#include <linux/uaccess.h>
#include <linux/usb.h>

@@ -56,6 +57,8 @@ struct usb_lcd {
using up all RAM */
struct usb_anchor submitted; /* URBs to wait for
before suspend */
+ struct rw_semaphore io_rwsem;
+ unsigned long disconnected:1;
};
#define to_lcd_dev(d) container_of(d, struct usb_lcd, kref)

@@ -141,6 +144,13 @@ static ssize_t lcd_read(struct file *file, char __user * buffer,

dev = file->private_data;

+ down_read(&dev->io_rwsem);
+
+ if (dev->disconnected) {
+ retval = -ENODEV;
+ goto out_up_io;
+ }
+
/* do a blocking bulk read to get data from the device */
retval = usb_bulk_msg(dev->udev,
usb_rcvbulkpipe(dev->udev,
@@ -157,6 +167,9 @@ static ssize_t lcd_read(struct file *file, char __user * buffer,
retval = bytes_read;
}

+out_up_io:
+ up_read(&dev->io_rwsem);
+
return retval;
}

@@ -236,11 +249,18 @@ static ssize_t lcd_write(struct file *file, const char __user * user_buffer,
if (r < 0)
return -EINTR;

+ down_read(&dev->io_rwsem);
+
+ if (dev->disconnected) {
+ retval = -ENODEV;
+ goto err_up_io;
+ }
+
/* create a urb, and a buffer for it, and copy the data to the urb */
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb) {
retval = -ENOMEM;
- goto err_no_buf;
+ goto err_up_io;
}

buf = usb_alloc_coherent(dev->udev, count, GFP_KERNEL,
@@ -277,6 +297,7 @@ static ssize_t lcd_write(struct file *file, const char __user * user_buffer,
the USB core will eventually free it entirely */
usb_free_urb(urb);

+ up_read(&dev->io_rwsem);
exit:
return count;
error_unanchor:
@@ -284,7 +305,8 @@ static ssize_t lcd_write(struct file *file, const char __user * user_buffer,
error:
usb_free_coherent(dev->udev, count, buf, urb->transfer_dma);
usb_free_urb(urb);
-err_no_buf:
+err_up_io:
+ up_read(&dev->io_rwsem);
up(&dev->limit_sem);
return retval;
}
@@ -324,6 +346,7 @@ static int lcd_probe(struct usb_interface *interface,

kref_init(&dev->kref);
sema_init(&dev->limit_sem, USB_LCD_CONCURRENT_WRITES);
+ init_rwsem(&dev->io_rwsem);
init_usb_anchor(&dev->submitted);

dev->udev = usb_get_dev(interface_to_usbdev(interface));
@@ -421,6 +444,12 @@ static void lcd_disconnect(struct usb_interface *interface)
/* give back our minor */
usb_deregister_dev(interface, &lcd_class);

+ down_write(&dev->io_rwsem);
+ dev->disconnected = 1;
+ up_write(&dev->io_rwsem);
+
+ usb_kill_anchored_urbs(&dev->submitted);
+
/* decrement our usage count */
kref_put(&dev->kref, lcd_delete);

diff --git a/drivers/usb/misc/yurex.c b/drivers/usb/misc/yurex.c
index 081570677f24..ec42f6b75564 100644
--- a/drivers/usb/misc/yurex.c
+++ b/drivers/usb/misc/yurex.c
@@ -64,6 +64,7 @@ struct usb_yurex {

struct kref kref;
struct mutex io_mutex;
+ unsigned long disconnected:1;
struct fasync_struct *async_queue;
wait_queue_head_t waitq;

@@ -111,6 +112,7 @@ static void yurex_delete(struct kref *kref)
dev->int_buffer, dev->urb->transfer_dma);
usb_free_urb(dev->urb);
}
+ usb_put_intf(dev->interface);
usb_put_dev(dev->udev);
kfree(dev);
}
@@ -136,6 +138,7 @@ static void yurex_interrupt(struct urb *urb)
switch (status) {
case 0: /*success*/
break;
+ /* The device is terminated or messed up, give up */
case -EOVERFLOW:
dev_err(&dev->interface->dev,
"%s - overflow with length %d, actual length is %d\n",
@@ -144,12 +147,13 @@ static void yurex_interrupt(struct urb *urb)
case -ENOENT:
case -ESHUTDOWN:
case -EILSEQ:
- /* The device is terminated, clean up */
+ case -EPROTO:
+ case -ETIME:
return;
default:
dev_err(&dev->interface->dev,
"%s - unknown status received: %d\n", __func__, status);
- goto exit;
+ return;
}

/* handle received message */
@@ -181,7 +185,6 @@ static void yurex_interrupt(struct urb *urb)
break;
}

-exit:
retval = usb_submit_urb(dev->urb, GFP_ATOMIC);
if (retval) {
dev_err(&dev->interface->dev, "%s - usb_submit_urb failed: %d\n",
@@ -208,7 +211,7 @@ static int yurex_probe(struct usb_interface *interface, const struct usb_device_
init_waitqueue_head(&dev->waitq);

dev->udev = usb_get_dev(interface_to_usbdev(interface));
- dev->interface = interface;
+ dev->interface = usb_get_intf(interface);

/* set up the endpoint information */
iface_desc = interface->cur_altsetting;
@@ -319,8 +322,9 @@ static void yurex_disconnect(struct usb_interface *interface)

/* prevent more I/O from starting */
usb_poison_urb(dev->urb);
+ usb_poison_urb(dev->cntl_urb);
mutex_lock(&dev->io_mutex);
- dev->interface = NULL;
+ dev->disconnected = 1;
mutex_unlock(&dev->io_mutex);

/* wakeup waiters */
@@ -408,7 +412,7 @@ static ssize_t yurex_read(struct file *file, char __user *buffer, size_t count,
dev = file->private_data;

mutex_lock(&dev->io_mutex);
- if (!dev->interface) { /* already disconnected */
+ if (dev->disconnected) { /* already disconnected */
mutex_unlock(&dev->io_mutex);
return -ENODEV;
}
@@ -443,7 +447,7 @@ static ssize_t yurex_write(struct file *file, const char __user *user_buffer,
goto error;

mutex_lock(&dev->io_mutex);
- if (!dev->interface) { /* already disconnected */
+ if (dev->disconnected) { /* already disconnected */
mutex_unlock(&dev->io_mutex);
retval = -ENODEV;
goto error;
diff --git a/drivers/usb/renesas_usbhs/common.h b/drivers/usb/renesas_usbhs/common.h
index 8c5fc12ad778..b8620aa6b72e 100644
--- a/drivers/usb/renesas_usbhs/common.h
+++ b/drivers/usb/renesas_usbhs/common.h
@@ -213,6 +213,7 @@ struct usbhs_priv;
/* DCPCTR */
#define BSTS (1 << 15) /* Buffer Status */
#define SUREQ (1 << 14) /* Sending SETUP Token */
+#define INBUFM (1 << 14) /* (PIPEnCTR) Transfer Buffer Monitor */
#define CSSTS (1 << 12) /* CSSTS Status */
#define ACLRM (1 << 9) /* Buffer Auto-Clear Mode */
#define SQCLR (1 << 8) /* Toggle Bit Clear */
diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
index b6d9308d43ba..4a486fa5473e 100644
--- a/drivers/usb/renesas_usbhs/fifo.c
+++ b/drivers/usb/renesas_usbhs/fifo.c
@@ -98,7 +98,7 @@ static void __usbhsf_pkt_del(struct usbhs_pkt *pkt)
list_del_init(&pkt->node);
}

-static struct usbhs_pkt *__usbhsf_pkt_get(struct usbhs_pipe *pipe)
+struct usbhs_pkt *__usbhsf_pkt_get(struct usbhs_pipe *pipe)
{
return list_first_entry_or_null(&pipe->list, struct usbhs_pkt, node);
}
diff --git a/drivers/usb/renesas_usbhs/fifo.h b/drivers/usb/renesas_usbhs/fifo.h
index 8b98507d7abc..c1fb39252b23 100644
--- a/drivers/usb/renesas_usbhs/fifo.h
+++ b/drivers/usb/renesas_usbhs/fifo.h
@@ -106,5 +106,6 @@ void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
void *buf, int len, int zero, int sequence);
struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt);
void usbhs_pkt_start(struct usbhs_pipe *pipe);
+struct usbhs_pkt *__usbhsf_pkt_get(struct usbhs_pipe *pipe);

#endif /* RENESAS_USB_FIFO_H */
diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c
index c068b673420b..0dedb0d91dcc 100644
--- a/drivers/usb/renesas_usbhs/mod_gadget.c
+++ b/drivers/usb/renesas_usbhs/mod_gadget.c
@@ -729,8 +729,7 @@ static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge)
struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
struct device *dev = usbhsg_gpriv_to_dev(gpriv);
unsigned long flags;
-
- usbhsg_pipe_disable(uep);
+ int ret = 0;

dev_dbg(dev, "set halt %d (pipe %d)\n",
halt, usbhs_pipe_number(pipe));
@@ -738,6 +737,18 @@ static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge)
/******************** spin lock ********************/
usbhs_lock(priv, flags);

+ /*
+ * According to usb_ep_set_halt()'s description, this function should
+ * return -EAGAIN if the IN endpoint has any queue or data. Note
+ * that the usbhs_pipe_is_dir_in() returns false if the pipe is an
+ * IN endpoint in the gadget mode.
+ */
+ if (!usbhs_pipe_is_dir_in(pipe) && (__usbhsf_pkt_get(pipe) ||
+ usbhs_pipe_contains_transmittable_data(pipe))) {
+ ret = -EAGAIN;
+ goto out;
+ }
+
if (halt)
usbhs_pipe_stall(pipe);
else
@@ -748,10 +759,11 @@ static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge)
else
usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE);

+out:
usbhs_unlock(priv, flags);
/******************** spin unlock ******************/

- return 0;
+ return ret;
}

static int usbhsg_ep_set_halt(struct usb_ep *ep, int value)
diff --git a/drivers/usb/renesas_usbhs/pipe.c b/drivers/usb/renesas_usbhs/pipe.c
index d811f0550c04..98ed6fcacd36 100644
--- a/drivers/usb/renesas_usbhs/pipe.c
+++ b/drivers/usb/renesas_usbhs/pipe.c
@@ -286,6 +286,21 @@ int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe)
return -EBUSY;
}

+bool usbhs_pipe_contains_transmittable_data(struct usbhs_pipe *pipe)
+{
+ u16 val;
+
+ /* Do not support for DCP pipe */
+ if (usbhs_pipe_is_dcp(pipe))
+ return false;
+
+ val = usbhsp_pipectrl_get(pipe);
+ if (val & INBUFM)
+ return true;
+
+ return false;
+}
+
/*
* PID ctrl
*/
diff --git a/drivers/usb/renesas_usbhs/pipe.h b/drivers/usb/renesas_usbhs/pipe.h
index 95185fdb29b1..e4144704ee02 100644
--- a/drivers/usb/renesas_usbhs/pipe.h
+++ b/drivers/usb/renesas_usbhs/pipe.h
@@ -90,6 +90,7 @@ void usbhs_pipe_init(struct usbhs_priv *priv,
int usbhs_pipe_get_maxpacket(struct usbhs_pipe *pipe);
void usbhs_pipe_clear(struct usbhs_pipe *pipe);
int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe);
+bool usbhs_pipe_contains_transmittable_data(struct usbhs_pipe *pipe);
void usbhs_pipe_enable(struct usbhs_pipe *pipe);
void usbhs_pipe_disable(struct usbhs_pipe *pipe);
void usbhs_pipe_stall(struct usbhs_pipe *pipe);
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index d2349c094767..8b5c99df0f2b 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -1025,6 +1025,9 @@ static const struct usb_device_id id_table_combined[] = {
/* EZPrototypes devices */
{ USB_DEVICE(EZPROTOTYPES_VID, HJELMSLUND_USB485_ISO_PID) },
{ USB_DEVICE_INTERFACE_NUMBER(UNJO_VID, UNJO_ISODEBUG_V1_PID, 1) },
+ /* Sienna devices */
+ { USB_DEVICE(FTDI_VID, FTDI_SIENNA_PID) },
+ { USB_DEVICE(ECHELON_VID, ECHELON_U20_PID) },
{ } /* Terminating entry */
};

diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h
index f12d806220b4..22d66217cb41 100644
--- a/drivers/usb/serial/ftdi_sio_ids.h
+++ b/drivers/usb/serial/ftdi_sio_ids.h
@@ -39,6 +39,9 @@

#define FTDI_LUMEL_PD12_PID 0x6002

+/* Sienna Serial Interface by Secyourit GmbH */
+#define FTDI_SIENNA_PID 0x8348
+
/* Cyber Cortex AV by Fabulous Silicon (http://fabuloussilicon.com) */
#define CYBER_CORTEX_AV_PID 0x8698

@@ -688,6 +691,12 @@
#define BANDB_TTL3USB9M_PID 0xAC50
#define BANDB_ZZ_PROG1_USB_PID 0xBA02

+/*
+ * Echelon USB Serial Interface
+ */
+#define ECHELON_VID 0x0920
+#define ECHELON_U20_PID 0x7500
+
/*
* Intrepid Control Systems (http://www.intrepidcs.com/) ValueCAN and NeoVI
*/
diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c
index 5662d324edd2..2c5a53bdccd4 100644
--- a/drivers/usb/serial/keyspan.c
+++ b/drivers/usb/serial/keyspan.c
@@ -1745,8 +1745,8 @@ static struct urb *keyspan_setup_urb(struct usb_serial *serial, int endpoint,

ep_desc = find_ep(serial, endpoint);
if (!ep_desc) {
- /* leak the urb, something's wrong and the callers don't care */
- return urb;
+ usb_free_urb(urb);
+ return NULL;
}
if (usb_endpoint_xfer_int(ep_desc)) {
ep_type_name = "INT";
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 959f462c6f72..b9fad046828d 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -422,6 +422,7 @@ static void option_instat_callback(struct urb *urb);
#define CINTERION_PRODUCT_PH8_AUDIO 0x0083
#define CINTERION_PRODUCT_AHXX_2RMNET 0x0084
#define CINTERION_PRODUCT_AHXX_AUDIO 0x0085
+#define CINTERION_PRODUCT_CLS8 0x00b0

/* Olivetti products */
#define OLIVETTI_VENDOR_ID 0x0b3c
@@ -1157,6 +1158,14 @@ static const struct usb_device_id option_ids[] = {
.driver_info = NCTRL(0) | RSVD(1) | RSVD(2) | RSVD(3) },
{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, TELIT_PRODUCT_LE922_USBCFG5, 0xff),
.driver_info = RSVD(0) | RSVD(1) | NCTRL(2) | RSVD(3) },
+ { USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1050, 0xff), /* Telit FN980 (rmnet) */
+ .driver_info = NCTRL(0) | RSVD(1) | RSVD(2) },
+ { USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1051, 0xff), /* Telit FN980 (MBIM) */
+ .driver_info = NCTRL(0) | RSVD(1) },
+ { USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1052, 0xff), /* Telit FN980 (RNDIS) */
+ .driver_info = NCTRL(2) | RSVD(3) },
+ { USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1053, 0xff), /* Telit FN980 (ECM) */
+ .driver_info = NCTRL(0) | RSVD(1) },
{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910),
.driver_info = NCTRL(0) | RSVD(1) | RSVD(3) },
{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910_DUAL_MODEM),
@@ -1850,6 +1859,8 @@ static const struct usb_device_id option_ids[] = {
.driver_info = RSVD(4) },
{ USB_DEVICE_INTERFACE_CLASS(CINTERION_VENDOR_ID, CINTERION_PRODUCT_AHXX_2RMNET, 0xff) },
{ USB_DEVICE_INTERFACE_CLASS(CINTERION_VENDOR_ID, CINTERION_PRODUCT_AHXX_AUDIO, 0xff) },
+ { USB_DEVICE_INTERFACE_CLASS(CINTERION_VENDOR_ID, CINTERION_PRODUCT_CLS8, 0xff),
+ .driver_info = RSVD(0) | RSVD(4) },
{ USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_HC28_MDM) },
{ USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_HC28_MDMNET) },
{ USB_DEVICE(SIEMENS_VENDOR_ID, CINTERION_PRODUCT_HC25_MDM) },
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index bb34f9f7eaf4..8115b7cccf1a 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -314,10 +314,7 @@ static void serial_cleanup(struct tty_struct *tty)
serial = port->serial;
owner = serial->type->driver.owner;

- mutex_lock(&serial->disc_mutex);
- if (!serial->disconnected)
- usb_autopm_put_interface(serial->interface);
- mutex_unlock(&serial->disc_mutex);
+ usb_autopm_put_interface(serial->interface);

usb_serial_put(serial);
module_put(owner);
diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb/usb-skeleton.c
index bb0bd732e29a..7140d06ae04f 100644
--- a/drivers/usb/usb-skeleton.c
+++ b/drivers/usb/usb-skeleton.c
@@ -63,6 +63,7 @@ struct usb_skel {
spinlock_t err_lock; /* lock for errors */
struct kref kref;
struct mutex io_mutex; /* synchronize I/O with disconnect */
+ unsigned long disconnected:1;
wait_queue_head_t bulk_in_wait; /* to wait for an ongoing read */
};
#define to_skel_dev(d) container_of(d, struct usb_skel, kref)
@@ -75,6 +76,7 @@ static void skel_delete(struct kref *kref)
struct usb_skel *dev = to_skel_dev(kref);

usb_free_urb(dev->bulk_in_urb);
+ usb_put_intf(dev->interface);
usb_put_dev(dev->udev);
kfree(dev->bulk_in_buffer);
kfree(dev);
@@ -126,10 +128,7 @@ static int skel_release(struct inode *inode, struct file *file)
return -ENODEV;

/* allow the device to be autosuspended */
- mutex_lock(&dev->io_mutex);
- if (dev->interface)
- usb_autopm_put_interface(dev->interface);
- mutex_unlock(&dev->io_mutex);
+ usb_autopm_put_interface(dev->interface);

/* decrement the count on our device */
kref_put(&dev->kref, skel_delete);
@@ -241,7 +240,7 @@ static ssize_t skel_read(struct file *file, char *buffer, size_t count,
if (rv < 0)
return rv;

- if (!dev->interface) { /* disconnect() was called */
+ if (dev->disconnected) { /* disconnect() was called */
rv = -ENODEV;
goto exit;
}
@@ -422,7 +421,7 @@ static ssize_t skel_write(struct file *file, const char *user_buffer,

/* this lock makes sure we don't submit URBs to gone devices */
mutex_lock(&dev->io_mutex);
- if (!dev->interface) { /* disconnect() was called */
+ if (dev->disconnected) { /* disconnect() was called */
mutex_unlock(&dev->io_mutex);
retval = -ENODEV;
goto error;
@@ -507,7 +506,7 @@ static int skel_probe(struct usb_interface *interface,
init_waitqueue_head(&dev->bulk_in_wait);

dev->udev = usb_get_dev(interface_to_usbdev(interface));
- dev->interface = interface;
+ dev->interface = usb_get_intf(interface);

/* set up the endpoint information */
/* use only the first bulk-in and bulk-out endpoints */
@@ -573,7 +572,7 @@ static void skel_disconnect(struct usb_interface *interface)

/* prevent more I/O from starting */
mutex_lock(&dev->io_mutex);
- dev->interface = NULL;
+ dev->disconnected = 1;
mutex_unlock(&dev->io_mutex);

usb_kill_anchored_urbs(&dev->submitted);
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index f8ef2e3fbf63..e35301e5fe8e 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -2729,7 +2729,8 @@ static int walk_log_tree(struct btrfs_trans_handle *trans,
* in the tree of log roots
*/
static int update_log_root(struct btrfs_trans_handle *trans,
- struct btrfs_root *log)
+ struct btrfs_root *log,
+ struct btrfs_root_item *root_item)
{
struct btrfs_fs_info *fs_info = log->fs_info;
int ret;
@@ -2737,10 +2738,10 @@ static int update_log_root(struct btrfs_trans_handle *trans,
if (log->log_transid == 1) {
/* insert root item on the first sync */
ret = btrfs_insert_root(trans, fs_info->log_root_tree,
- &log->root_key, &log->root_item);
+ &log->root_key, root_item);
} else {
ret = btrfs_update_root(trans, fs_info->log_root_tree,
- &log->root_key, &log->root_item);
+ &log->root_key, root_item);
}
return ret;
}
@@ -2836,6 +2837,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info = root->fs_info;
struct btrfs_root *log = root->log_root;
struct btrfs_root *log_root_tree = fs_info->log_root_tree;
+ struct btrfs_root_item new_root_item;
int log_transid = 0;
struct btrfs_log_ctx root_log_ctx;
struct blk_plug plug;
@@ -2901,17 +2903,25 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
goto out;
}

+ /*
+ * We _must_ update under the root->log_mutex in order to make sure we
+ * have a consistent view of the log root we are trying to commit at
+ * this moment.
+ *
+ * We _must_ copy this into a local copy, because we are not holding the
+ * log_root_tree->log_mutex yet. This is important because when we
+ * commit the log_root_tree we must have a consistent view of the
+ * log_root_tree when we update the super block to point at the
+ * log_root_tree bytenr. If we update the log_root_tree here we'll race
+ * with the commit and possibly point at the new block which we may not
+ * have written out.
+ */
btrfs_set_root_node(&log->root_item, log->node);
+ memcpy(&new_root_item, &log->root_item, sizeof(new_root_item));

root->log_transid++;
log->log_transid = root->log_transid;
root->log_start_pid = 0;
- /*
- * Update or create log root item under the root's log_mutex to prevent
- * races with concurrent log syncs that can lead to failure to update
- * log root item because it was not created yet.
- */
- ret = update_log_root(trans, log);
/*
* IO has been started, blocks of the log tree have WRITTEN flag set
* in their headers. new modifications of the log will be written to
@@ -2932,6 +2942,14 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
mutex_unlock(&log_root_tree->log_mutex);

mutex_lock(&log_root_tree->log_mutex);
+
+ /*
+ * Now we are safe to update the log_root_tree because we're under the
+ * log_mutex, and we're a current writer so we're holding the commit
+ * open until we drop the log_mutex.
+ */
+ ret = update_log_root(trans, log, &new_root_item);
+
if (atomic_dec_and_test(&log_root_tree->log_writers)) {
/*
* Implicit memory barrier after atomic_dec_and_test
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index ca98afda3cdb..f00a7ce3eb6e 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -841,10 +841,16 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
static int
cifs_d_revalidate(struct dentry *direntry, unsigned int flags)
{
+ struct inode *inode;
+
if (flags & LOOKUP_RCU)
return -ECHILD;

if (d_really_is_positive(direntry)) {
+ inode = d_inode(direntry);
+ if ((flags & LOOKUP_REVAL) && !CIFS_CACHE_READ(CIFS_I(inode)))
+ CIFS_I(inode)->time = 0; /* force reval */
+
if (cifs_revalidate_dentry(direntry))
return 0;
else {
@@ -855,7 +861,7 @@ cifs_d_revalidate(struct dentry *direntry, unsigned int flags)
* attributes will have been updated by
* cifs_revalidate_dentry().
*/
- if (IS_AUTOMOUNT(d_inode(direntry)) &&
+ if (IS_AUTOMOUNT(inode) &&
!(direntry->d_flags & DCACHE_NEED_AUTOMOUNT)) {
spin_lock(&direntry->d_lock);
direntry->d_flags |= DCACHE_NEED_AUTOMOUNT;
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 6ee8f9270892..71a960da7cce 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -252,6 +252,12 @@ cifs_nt_open(char *full_path, struct inode *inode, struct cifs_sb_info *cifs_sb,
rc = cifs_get_inode_info(&inode, full_path, buf, inode->i_sb,
xid, fid);

+ if (rc) {
+ server->ops->close(xid, tcon, fid);
+ if (rc == -ESTALE)
+ rc = -EOPENSTALE;
+ }
+
out:
kfree(buf);
return rc;
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index e7192ee7a89c..a35c14105906 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -410,6 +410,7 @@ int cifs_get_inode_info_unix(struct inode **pinode,
/* if uniqueid is different, return error */
if (unlikely(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM &&
CIFS_I(*pinode)->uniqueid != fattr.cf_uniqueid)) {
+ CIFS_I(*pinode)->time = 0; /* force reval */
rc = -ESTALE;
goto cgiiu_exit;
}
@@ -417,6 +418,7 @@ int cifs_get_inode_info_unix(struct inode **pinode,
/* if filetype is different, return error */
if (unlikely(((*pinode)->i_mode & S_IFMT) !=
(fattr.cf_mode & S_IFMT))) {
+ CIFS_I(*pinode)->time = 0; /* force reval */
rc = -ESTALE;
goto cgiiu_exit;
}
@@ -925,6 +927,7 @@ cifs_get_inode_info(struct inode **inode, const char *full_path,
/* if uniqueid is different, return error */
if (unlikely(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM &&
CIFS_I(*inode)->uniqueid != fattr.cf_uniqueid)) {
+ CIFS_I(*inode)->time = 0; /* force reval */
rc = -ESTALE;
goto cgii_exit;
}
@@ -932,6 +935,7 @@ cifs_get_inode_info(struct inode **inode, const char *full_path,
/* if filetype is different, return error */
if (unlikely(((*inode)->i_mode & S_IFMT) !=
(fattr.cf_mode & S_IFMT))) {
+ CIFS_I(*inode)->time = 0; /* force reval */
rc = -ESTALE;
goto cgii_exit;
}
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 344aa861774b..e70975ca723b 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -1814,11 +1814,11 @@ static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
struct super_block *sb = sbi->sb;
unsigned int blocksize;

- if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic)) {
+ if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) {
f2fs_msg(sb, KERN_INFO,
"Magic Mismatch, valid(0x%x) - read(0x%x)",
F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
- return 1;
+ return -EINVAL;
}

/* Currently, support only 4KB page cache size */
@@ -1826,7 +1826,7 @@ static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
f2fs_msg(sb, KERN_INFO,
"Invalid page_cache_size (%lu), supports only 4KB\n",
PAGE_SIZE);
- return 1;
+ return -EFSCORRUPTED;
}

/* Currently, support only 4KB block size */
@@ -1835,7 +1835,7 @@ static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
f2fs_msg(sb, KERN_INFO,
"Invalid blocksize (%u), supports only 4KB\n",
blocksize);
- return 1;
+ return -EFSCORRUPTED;
}

/* check log blocks per segment */
@@ -1843,7 +1843,7 @@ static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
f2fs_msg(sb, KERN_INFO,
"Invalid log blocks per segment (%u)\n",
le32_to_cpu(raw_super->log_blocks_per_seg));
- return 1;
+ return -EFSCORRUPTED;
}

/* Currently, support 512/1024/2048/4096 bytes sector size */
@@ -1853,7 +1853,7 @@ static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
F2FS_MIN_LOG_SECTOR_SIZE) {
f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize (%u)",
le32_to_cpu(raw_super->log_sectorsize));
- return 1;
+ return -EFSCORRUPTED;
}
if (le32_to_cpu(raw_super->log_sectors_per_block) +
le32_to_cpu(raw_super->log_sectorsize) !=
@@ -1862,7 +1862,7 @@ static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
"Invalid log sectors per block(%u) log sectorsize(%u)",
le32_to_cpu(raw_super->log_sectors_per_block),
le32_to_cpu(raw_super->log_sectorsize));
- return 1;
+ return -EFSCORRUPTED;
}

segment_count = le32_to_cpu(raw_super->segment_count);
@@ -1878,7 +1878,7 @@ static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
f2fs_msg(sb, KERN_INFO,
"Invalid segment count (%u)",
segment_count);
- return 1;
+ return -EFSCORRUPTED;
}

if (total_sections > segment_count ||
@@ -1887,35 +1887,35 @@ static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
f2fs_msg(sb, KERN_INFO,
"Invalid segment/section count (%u, %u x %u)",
segment_count, total_sections, segs_per_sec);
- return 1;
+ return -EFSCORRUPTED;
}

if ((segment_count / segs_per_sec) < total_sections) {
f2fs_msg(sb, KERN_INFO,
"Small segment_count (%u < %u * %u)",
segment_count, segs_per_sec, total_sections);
- return 1;
+ return -EFSCORRUPTED;
}

if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
f2fs_msg(sb, KERN_INFO,
"Wrong segment_count / block_count (%u > %llu)",
segment_count, le64_to_cpu(raw_super->block_count));
- return 1;
+ return -EFSCORRUPTED;
}

if (secs_per_zone > total_sections || !secs_per_zone) {
f2fs_msg(sb, KERN_INFO,
"Wrong secs_per_zone / total_sections (%u, %u)",
secs_per_zone, total_sections);
- return 1;
+ return -EFSCORRUPTED;
}
if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION) {
f2fs_msg(sb, KERN_INFO,
"Corrupted extension count (%u > %u)",
le32_to_cpu(raw_super->extension_count),
F2FS_MAX_EXTENSION);
- return 1;
+ return -EFSCORRUPTED;
}

if (le32_to_cpu(raw_super->cp_payload) >
@@ -1924,7 +1924,7 @@ static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
"Insane cp_payload (%u > %u)",
le32_to_cpu(raw_super->cp_payload),
blocks_per_seg - F2FS_CP_PACKS);
- return 1;
+ return -EFSCORRUPTED;
}

/* check reserved ino info */
@@ -1936,12 +1936,12 @@ static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
le32_to_cpu(raw_super->node_ino),
le32_to_cpu(raw_super->meta_ino),
le32_to_cpu(raw_super->root_ino));
- return 1;
+ return -EFSCORRUPTED;
}

/* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
if (sanity_check_area_boundary(sbi, bh))
- return 1;
+ return -EFSCORRUPTED;

return 0;
}
@@ -2216,11 +2216,11 @@ static int read_raw_super_block(struct f2fs_sb_info *sbi,
}

/* sanity checking of raw super */
- if (sanity_check_raw_super(sbi, bh)) {
+ err = sanity_check_raw_super(sbi, bh);
+ if (err) {
f2fs_msg(sb, KERN_ERR,
"Can't find valid F2FS filesystem in %dth superblock",
block + 1);
- err = -EFSCORRUPTED;
brelse(bh);
continue;
}
diff --git a/fs/libfs.c b/fs/libfs.c
index 3aabe553fc45..49623301e5f0 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -86,58 +86,47 @@ int dcache_dir_close(struct inode *inode, struct file *file)
EXPORT_SYMBOL(dcache_dir_close);

/* parent is locked at least shared */
-static struct dentry *next_positive(struct dentry *parent,
- struct list_head *from,
- int count)
+/*
+ * Returns an element of siblings' list.
+ * We are looking for <count>th positive after <p>; if
+ * found, dentry is grabbed and passed to caller via *<res>.
+ * If no such element exists, the anchor of list is returned
+ * and *<res> is set to NULL.
+ */
+static struct list_head *scan_positives(struct dentry *cursor,
+ struct list_head *p,
+ loff_t count,
+ struct dentry **res)
{
- unsigned *seq = &parent->d_inode->i_dir_seq, n;
- struct dentry *res;
- struct list_head *p;
- bool skipped;
- int i;
+ struct dentry *dentry = cursor->d_parent, *found = NULL;

-retry:
- i = count;
- skipped = false;
- n = smp_load_acquire(seq) & ~1;
- res = NULL;
- rcu_read_lock();
- for (p = from->next; p != &parent->d_subdirs; p = p->next) {
+ spin_lock(&dentry->d_lock);
+ while ((p = p->next) != &dentry->d_subdirs) {
struct dentry *d = list_entry(p, struct dentry, d_child);
- if (!simple_positive(d)) {
- skipped = true;
- } else if (!--i) {
- res = d;
- break;
+ // we must at least skip cursors, to avoid livelocks
+ if (d->d_flags & DCACHE_DENTRY_CURSOR)
+ continue;
+ if (simple_positive(d) && !--count) {
+ spin_lock_nested(&d->d_lock, DENTRY_D_LOCK_NESTED);
+ if (simple_positive(d))
+ found = dget_dlock(d);
+ spin_unlock(&d->d_lock);
+ if (likely(found))
+ break;
+ count = 1;
+ }
+ if (need_resched()) {
+ list_move(&cursor->d_child, p);
+ p = &cursor->d_child;
+ spin_unlock(&dentry->d_lock);
+ cond_resched();
+ spin_lock(&dentry->d_lock);
}
}
- rcu_read_unlock();
- if (skipped) {
- smp_rmb();
- if (unlikely(*seq != n))
- goto retry;
- }
- return res;
-}
-
-static void move_cursor(struct dentry *cursor, struct list_head *after)
-{
- struct dentry *parent = cursor->d_parent;
- unsigned n, *seq = &parent->d_inode->i_dir_seq;
- spin_lock(&parent->d_lock);
- for (;;) {
- n = *seq;
- if (!(n & 1) && cmpxchg(seq, n, n + 1) == n)
- break;
- cpu_relax();
- }
- __list_del(cursor->d_child.prev, cursor->d_child.next);
- if (after)
- list_add(&cursor->d_child, after);
- else
- list_add_tail(&cursor->d_child, &parent->d_subdirs);
- smp_store_release(seq, n + 2);
- spin_unlock(&parent->d_lock);
+ spin_unlock(&dentry->d_lock);
+ dput(*res);
+ *res = found;
+ return p;
}

loff_t dcache_dir_lseek(struct file *file, loff_t offset, int whence)
@@ -153,17 +142,28 @@ loff_t dcache_dir_lseek(struct file *file, loff_t offset, int whence)
return -EINVAL;
}
if (offset != file->f_pos) {
+ struct dentry *cursor = file->private_data;
+ struct dentry *to = NULL;
+ struct list_head *p;
+
file->f_pos = offset;
- if (file->f_pos >= 2) {
- struct dentry *cursor = file->private_data;
- struct dentry *to;
- loff_t n = file->f_pos - 2;
-
- inode_lock_shared(dentry->d_inode);
- to = next_positive(dentry, &dentry->d_subdirs, n);
- move_cursor(cursor, to ? &to->d_child : NULL);
- inode_unlock_shared(dentry->d_inode);
+ inode_lock_shared(dentry->d_inode);
+
+ if (file->f_pos > 2) {
+ p = scan_positives(cursor, &dentry->d_subdirs,
+ file->f_pos - 2, &to);
+ spin_lock(&dentry->d_lock);
+ list_move(&cursor->d_child, p);
+ spin_unlock(&dentry->d_lock);
+ } else {
+ spin_lock(&dentry->d_lock);
+ list_del_init(&cursor->d_child);
+ spin_unlock(&dentry->d_lock);
}
+
+ dput(to);
+
+ inode_unlock_shared(dentry->d_inode);
}
return offset;
}
@@ -185,25 +185,29 @@ int dcache_readdir(struct file *file, struct dir_context *ctx)
{
struct dentry *dentry = file->f_path.dentry;
struct dentry *cursor = file->private_data;
- struct list_head *p = &cursor->d_child;
- struct dentry *next;
- bool moved = false;
+ struct list_head *anchor = &dentry->d_subdirs;
+ struct dentry *next = NULL;
+ struct list_head *p;

if (!dir_emit_dots(file, ctx))
return 0;

if (ctx->pos == 2)
- p = &dentry->d_subdirs;
- while ((next = next_positive(dentry, p, 1)) != NULL) {
+ p = anchor;
+ else
+ p = &cursor->d_child;
+
+ while ((p = scan_positives(cursor, p, 1, &next)) != anchor) {
if (!dir_emit(ctx, next->d_name.name, next->d_name.len,
d_inode(next)->i_ino, dt_type(d_inode(next))))
break;
- moved = true;
- p = &next->d_child;
ctx->pos++;
}
- if (moved)
- move_cursor(cursor, p);
+ spin_lock(&dentry->d_lock);
+ list_move_tail(&cursor->d_child, p);
+ spin_unlock(&dentry->d_lock);
+ dput(next);
+
return 0;
}
EXPORT_SYMBOL(dcache_readdir);
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index 614ce1f8b4ac..9cdac9945483 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -122,32 +122,49 @@ static inline int put_dreq(struct nfs_direct_req *dreq)
}

static void
-nfs_direct_good_bytes(struct nfs_direct_req *dreq, struct nfs_pgio_header *hdr)
+nfs_direct_handle_truncated(struct nfs_direct_req *dreq,
+ const struct nfs_pgio_header *hdr,
+ ssize_t dreq_len)
{
- int i;
- ssize_t count;
+ struct nfs_direct_mirror *mirror = &dreq->mirrors[hdr->pgio_mirror_idx];
+
+ if (!(test_bit(NFS_IOHDR_ERROR, &hdr->flags) ||
+ test_bit(NFS_IOHDR_EOF, &hdr->flags)))
+ return;
+ if (dreq->max_count >= dreq_len) {
+ dreq->max_count = dreq_len;
+ if (dreq->count > dreq_len)
+ dreq->count = dreq_len;
+
+ if (test_bit(NFS_IOHDR_ERROR, &hdr->flags))
+ dreq->error = hdr->error;
+ else /* Clear outstanding error if this is EOF */
+ dreq->error = 0;
+ }
+ if (mirror->count > dreq_len)
+ mirror->count = dreq_len;
+}

- WARN_ON_ONCE(dreq->count >= dreq->max_count);
+static void
+nfs_direct_count_bytes(struct nfs_direct_req *dreq,
+ const struct nfs_pgio_header *hdr)
+{
+ struct nfs_direct_mirror *mirror = &dreq->mirrors[hdr->pgio_mirror_idx];
+ loff_t hdr_end = hdr->io_start + hdr->good_bytes;
+ ssize_t dreq_len = 0;

- if (dreq->mirror_count == 1) {
- dreq->mirrors[hdr->pgio_mirror_idx].count += hdr->good_bytes;
- dreq->count += hdr->good_bytes;
- } else {
- /* mirrored writes */
- count = dreq->mirrors[hdr->pgio_mirror_idx].count;
- if (count + dreq->io_start < hdr->io_start + hdr->good_bytes) {
- count = hdr->io_start + hdr->good_bytes - dreq->io_start;
- dreq->mirrors[hdr->pgio_mirror_idx].count = count;
- }
- /* update the dreq->count by finding the minimum agreed count from all
- * mirrors */
- count = dreq->mirrors[0].count;
+ if (hdr_end > dreq->io_start)
+ dreq_len = hdr_end - dreq->io_start;

- for (i = 1; i < dreq->mirror_count; i++)
- count = min(count, dreq->mirrors[i].count);
+ nfs_direct_handle_truncated(dreq, hdr, dreq_len);

- dreq->count = count;
- }
+ if (dreq_len > dreq->max_count)
+ dreq_len = dreq->max_count;
+
+ if (mirror->count < dreq_len)
+ mirror->count = dreq_len;
+ if (dreq->count < dreq_len)
+ dreq->count = dreq_len;
}

/*
@@ -401,20 +418,12 @@ static void nfs_direct_read_completion(struct nfs_pgio_header *hdr)
struct nfs_direct_req *dreq = hdr->dreq;

spin_lock(&dreq->lock);
- if (test_bit(NFS_IOHDR_ERROR, &hdr->flags))
- dreq->error = hdr->error;
-
if (test_bit(NFS_IOHDR_REDO, &hdr->flags)) {
spin_unlock(&dreq->lock);
goto out_put;
}

- if (hdr->good_bytes != 0)
- nfs_direct_good_bytes(dreq, hdr);
-
- if (test_bit(NFS_IOHDR_EOF, &hdr->flags))
- dreq->error = 0;
-
+ nfs_direct_count_bytes(dreq, hdr);
spin_unlock(&dreq->lock);

while (!list_empty(&hdr->pages)) {
@@ -651,6 +660,9 @@ static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq)
nfs_direct_write_scan_commit_list(dreq->inode, &reqs, &cinfo);

dreq->count = 0;
+ dreq->max_count = 0;
+ list_for_each_entry(req, &reqs, wb_list)
+ dreq->max_count += req->wb_bytes;
dreq->verf.committed = NFS_INVALID_STABLE_HOW;
nfs_clear_pnfs_ds_commit_verifiers(&dreq->ds_cinfo);
for (i = 0; i < dreq->mirror_count; i++)
@@ -783,17 +795,13 @@ static void nfs_direct_write_completion(struct nfs_pgio_header *hdr)
nfs_init_cinfo_from_dreq(&cinfo, dreq);

spin_lock(&dreq->lock);
-
- if (test_bit(NFS_IOHDR_ERROR, &hdr->flags))
- dreq->error = hdr->error;
-
if (test_bit(NFS_IOHDR_REDO, &hdr->flags)) {
spin_unlock(&dreq->lock);
goto out_put;
}

+ nfs_direct_count_bytes(dreq, hdr);
if (hdr->good_bytes != 0) {
- nfs_direct_good_bytes(dreq, hdr);
if (nfs_write_need_commit(hdr)) {
if (dreq->flags == NFS_ODIRECT_RESCHED_WRITES)
request_commit = true;
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 0b0282d2f011..10151c9268e1 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -1715,6 +1715,7 @@ xfs_fs_fill_super(
out_close_devices:
xfs_close_devices(mp);
out_free_fsname:
+ sb->s_fs_info = NULL;
xfs_free_fsname(mp);
kfree(mp);
out:
@@ -1732,6 +1733,10 @@ xfs_fs_put_super(
{
struct xfs_mount *mp = XFS_M(sb);

+ /* if ->fill_super failed, we have no mount to tear down */
+ if (!sb->s_fs_info)
+ return;
+
xfs_notice(mp, "Unmounting Filesystem");
xfs_filestream_unmount(mp);
xfs_unmountfs(mp);
@@ -1741,6 +1746,8 @@ xfs_fs_put_super(
xfs_destroy_percpu_counters(mp);
xfs_destroy_mount_workqueues(mp);
xfs_close_devices(mp);
+
+ sb->s_fs_info = NULL;
xfs_free_fsname(mp);
kfree(mp);
}
@@ -1760,6 +1767,9 @@ xfs_fs_nr_cached_objects(
struct super_block *sb,
struct shrink_control *sc)
{
+ /* Paranoia: catch incorrect calls during mount setup or teardown */
+ if (WARN_ON_ONCE(!sb->s_fs_info))
+ return 0;
return xfs_reclaim_inodes_count(XFS_M(sb));
}

diff --git a/kernel/fork.c b/kernel/fork.c
index 919e7cd5cd23..3352fdbd5e20 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -2499,7 +2499,7 @@ int sysctl_max_threads(struct ctl_table *table, int write,
struct ctl_table t;
int ret;
int threads = max_threads;
- int min = MIN_THREADS;
+ int min = 1;
int max = MAX_THREADS;

t = *table;
@@ -2511,7 +2511,7 @@ int sysctl_max_threads(struct ctl_table *table, int write,
if (ret || !write)
return ret;

- set_max_threads(threads);
+ max_threads = threads;

return 0;
}
diff --git a/kernel/panic.c b/kernel/panic.c
index 32ff6fd30201..207ceac3a432 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -146,6 +146,7 @@ void panic(const char *fmt, ...)
* after setting panic_cpu) from invoking panic() again.
*/
local_irq_disable();
+ preempt_disable_notrace();

/*
* It's possible to come here directly from a panic-assertion and
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 10b3e3b22af6..144d982905fc 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -3629,21 +3629,22 @@ ftrace_regex_open(struct ftrace_ops *ops, int flag,
struct ftrace_hash *hash;
struct list_head *mod_head;
struct trace_array *tr = ops->private;
- int ret = 0;
+ int ret = -ENOMEM;

ftrace_ops_init(ops);

if (unlikely(ftrace_disabled))
return -ENODEV;

+ if (tr && trace_array_get(tr) < 0)
+ return -ENODEV;
+
iter = kzalloc(sizeof(*iter), GFP_KERNEL);
if (!iter)
- return -ENOMEM;
+ goto out;

- if (trace_parser_get_init(&iter->parser, FTRACE_BUFF_MAX)) {
- kfree(iter);
- return -ENOMEM;
- }
+ if (trace_parser_get_init(&iter->parser, FTRACE_BUFF_MAX))
+ goto out;

iter->ops = ops;
iter->flags = flag;
@@ -3673,13 +3674,13 @@ ftrace_regex_open(struct ftrace_ops *ops, int flag,

if (!iter->hash) {
trace_parser_put(&iter->parser);
- kfree(iter);
- ret = -ENOMEM;
goto out_unlock;
}
} else
iter->hash = hash;

+ ret = 0;
+
if (file->f_mode & FMODE_READ) {
iter->pg = ftrace_pages_start;

@@ -3691,7 +3692,6 @@ ftrace_regex_open(struct ftrace_ops *ops, int flag,
/* Failed */
free_ftrace_hash(iter->hash);
trace_parser_put(&iter->parser);
- kfree(iter);
}
} else
file->private_data = iter;
@@ -3699,6 +3699,13 @@ ftrace_regex_open(struct ftrace_ops *ops, int flag,
out_unlock:
mutex_unlock(&ops->func_hash->regex_lock);

+ out:
+ if (ret) {
+ kfree(iter);
+ if (tr)
+ trace_array_put(tr);
+ }
+
return ret;
}

@@ -5098,6 +5105,8 @@ int ftrace_regex_release(struct inode *inode, struct file *file)

mutex_unlock(&iter->ops->func_hash->regex_lock);
free_ftrace_hash(iter->hash);
+ if (iter->tr)
+ trace_array_put(iter->tr);
kfree(iter);

return 0;
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 91227e339ef6..bbe5a857c082 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -4152,9 +4152,14 @@ static int show_traces_open(struct inode *inode, struct file *file)
if (tracing_disabled)
return -ENODEV;

+ if (trace_array_get(tr) < 0)
+ return -ENODEV;
+
ret = seq_open(file, &show_traces_seq_ops);
- if (ret)
+ if (ret) {
+ trace_array_put(tr);
return ret;
+ }

m = file->private_data;
m->private = tr;
@@ -4162,6 +4167,14 @@ static int show_traces_open(struct inode *inode, struct file *file)
return 0;
}

+static int show_traces_release(struct inode *inode, struct file *file)
+{
+ struct trace_array *tr = inode->i_private;
+
+ trace_array_put(tr);
+ return seq_release(inode, file);
+}
+
static ssize_t
tracing_write_stub(struct file *filp, const char __user *ubuf,
size_t count, loff_t *ppos)
@@ -4192,8 +4205,8 @@ static const struct file_operations tracing_fops = {
static const struct file_operations show_traces_fops = {
.open = show_traces_open,
.read = seq_read,
- .release = seq_release,
.llseek = seq_lseek,
+ .release = show_traces_release,
};

static ssize_t
diff --git a/kernel/trace/trace_hwlat.c b/kernel/trace/trace_hwlat.c
index d7c8e4ec3d9d..bff6c033d70e 100644
--- a/kernel/trace/trace_hwlat.c
+++ b/kernel/trace/trace_hwlat.c
@@ -152,7 +152,7 @@ void trace_hwlat_callback(bool enter)
if (enter)
nmi_ts_start = time_get();
else
- nmi_total_ts = time_get() - nmi_ts_start;
+ nmi_total_ts += time_get() - nmi_ts_start;
}

if (enter)
@@ -258,6 +258,8 @@ static int get_sample(void)
/* Keep a running maximum ever recorded hardware latency */
if (sample > tr->max_latency)
tr->max_latency = sample;
+ if (outer_sample > tr->max_latency)
+ tr->max_latency = outer_sample;
}

out:
diff --git a/tools/perf/util/jitdump.c b/tools/perf/util/jitdump.c
index 36483db032e8..3f02a5e284b2 100644
--- a/tools/perf/util/jitdump.c
+++ b/tools/perf/util/jitdump.c
@@ -394,7 +394,7 @@ static int jit_repipe_code_load(struct jit_buf_desc *jd, union jr_entry *jr)
size_t size;
u16 idr_size;
const char *sym;
- uint32_t count;
+ uint64_t count;
int ret, csize, usize;
pid_t pid, tid;
struct {
@@ -417,7 +417,7 @@ static int jit_repipe_code_load(struct jit_buf_desc *jd, union jr_entry *jr)
return -1;

filename = event->mmap2.filename;
- size = snprintf(filename, PATH_MAX, "%s/jitted-%d-%u.so",
+ size = snprintf(filename, PATH_MAX, "%s/jitted-%d-%" PRIu64 ".so",
jd->dir,
pid,
count);
@@ -530,7 +530,7 @@ static int jit_repipe_code_move(struct jit_buf_desc *jd, union jr_entry *jr)
return -1;

filename = event->mmap2.filename;
- size = snprintf(filename, PATH_MAX, "%s/jitted-%d-%"PRIu64,
+ size = snprintf(filename, PATH_MAX, "%s/jitted-%d-%" PRIu64 ".so",
jd->dir,
pid,
jr->move.code_index);
diff --git a/tools/perf/util/llvm-utils.c b/tools/perf/util/llvm-utils.c
index 2bdaac048a0a..da59a9e9543b 100644
--- a/tools/perf/util/llvm-utils.c
+++ b/tools/perf/util/llvm-utils.c
@@ -225,14 +225,14 @@ static int detect_kbuild_dir(char **kbuild_dir)
const char *prefix_dir = "";
const char *suffix_dir = "";

+ /* _UTSNAME_LENGTH is 65 */
+ char release[128];
+
char *autoconf_path;

int err;

if (!test_dir) {
- /* _UTSNAME_LENGTH is 65 */
- char release[128];
-
err = fetch_kernel_version(NULL, release,
sizeof(release));
if (err)
\
 
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