firefly-linux-kernel-4.4.55.git
11 years agoMAINTAINERS: Add myself as maintainer for the NCT6775 driver
Guenter Roeck [Wed, 3 Apr 2013 21:12:11 +0000 (14:12 -0700)]
MAINTAINERS: Add myself as maintainer for the NCT6775 driver

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Jean Delvare <khali@linux-fr.org>
11 years agohwmon: (nct6775) Expand scope of supported chips
Guenter Roeck [Tue, 2 Apr 2013 15:53:19 +0000 (08:53 -0700)]
hwmon: (nct6775) Expand scope of supported chips

NCT6775, NCT6776, and NCT6779 have a number of variants with the same
chip ID but different chip labels. Add text "or compatible" to the
message displayed when the driver is loaded and rephrase the Kconfig
entry to reflect that it also supports compatible chips.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (gpio-fan) Use is_visible to determine if attributes should be created
Guenter Roeck [Sat, 30 Mar 2013 16:09:39 +0000 (09:09 -0700)]
hwmon: (gpio-fan) Use is_visible to determine if attributes should be created

Simplify code and reduce object size by more than 300 bytes (x86_64).

Cc: Jamie Lentin <jm@lentin.co.uk>
Cc: Simon Guinot <simon.guinot@sequanux.org>
Tested-by: Simon Guinot <simon.guinot@sequanux.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (tmp401) Fix device detection for TMP411B and TMP411C
Guenter Roeck [Sat, 30 Mar 2013 00:56:07 +0000 (17:56 -0700)]
hwmon: (tmp401) Fix device detection for TMP411B and TMP411C

Turns out that TMP411B and TMP411C have different and unique device IDs.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
11 years agohwmon: Add driver for LM95234
Guenter Roeck [Sun, 10 Mar 2013 23:54:19 +0000 (16:54 -0700)]
hwmon: Add driver for LM95234

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (tmp401) Add support for TMP431
Guenter Roeck [Fri, 15 Mar 2013 19:55:08 +0000 (12:55 -0700)]
hwmon: (tmp401) Add support for TMP431

TMP431 is compatible to TMP401.

Also add support for additional I2C addresses supported by TMP411B
and TMP411C.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
11 years agohwmon: (pmbus/lm25066) Add support for LM25056
Guenter Roeck [Sat, 9 Feb 2013 23:15:52 +0000 (15:15 -0800)]
hwmon: (pmbus/lm25066) Add support for LM25056

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (pmbus/lm25066) Refactor device specific coefficients
Guenter Roeck [Sat, 9 Feb 2013 22:26:51 +0000 (14:26 -0800)]
hwmon: (pmbus/lm25066) Refactor device specific coefficients

Initialize device specific coefficients from table instead of hard-coding it
to simplify adding additional chips.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (pmbus/lm25066) Clamp limit attributes
Guenter Roeck [Thu, 7 Feb 2013 04:49:12 +0000 (20:49 -0800)]
hwmon: (pmbus/lm25066) Clamp limit attributes

Limits on all supported sensors and chips have to be within 0..0x0fff,
and limits are always positive.

Clamp written values in chip driver. Also clear value cache to ensure
that the actually written value is read back and reported correctly.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (pmbus/lm25066) Report VAUX as vmon
Guenter Roeck [Wed, 6 Feb 2013 17:55:37 +0000 (09:55 -0800)]
hwmon: (pmbus/lm25066) Report VAUX as vmon

So far the driver reported the voltage on VAUX as "vout2". This was not
entirely appropriate as it is not an output voltage, and complicates
the code. Use the new virtual "VMON" register set and report the voltage
as "vmon" instead.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (max6697) Use is_visible and sysfs_create_group
Guenter Roeck [Mon, 18 Mar 2013 13:40:16 +0000 (06:40 -0700)]
hwmon: (max6697) Use is_visible and sysfs_create_group

Simplify the code and reduce its size by using is_visible to determine
valid attributes, and sysfs_create_group to create all of them with
a single call.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (adt7310) Fix sparse warning
Guenter Roeck [Mon, 18 Mar 2013 10:46:12 +0000 (03:46 -0700)]
hwmon: (adt7310) Fix sparse warning

Fix: drivers/hwmon/adt7310.c:51:16: sparse: cast to restricted __be16

Cc: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (pmbus/ltc2978) Add support for LTC2974 and LTC3883
Guenter Roeck [Sun, 27 Jan 2013 17:24:28 +0000 (09:24 -0800)]
hwmon: (pmbus/ltc2978) Add support for LTC2974 and LTC3883

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (pmbus/ltc2978) Clean up documentation
Guenter Roeck [Fri, 22 Feb 2013 15:52:39 +0000 (07:52 -0800)]
hwmon: (pmbus/ltc2978) Clean up documentation

Some sysfs attributes are only supported on LTC2978 and not on LTC3880.
Update documentation to reflect which attributes are supported for which chips.

Output current attributes supported on LTC3880 were described as providing
input current values. Fix text to reflect that the attributes provide output
current values.

"reset history" attribute descriptions were misleading and seemed to imply
that all history was reset when writing a single attribute. Replace with more
accurate text.

Replace 'internal temperature" with "chip temperature". Temperature limits
not only apply to the chip temperature, but also to external temperatures
on LTC3880, so remove the word "chip" from the attribute description.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (pmbus/ltc2978) Code cleanup
Guenter Roeck [Thu, 28 Feb 2013 16:14:45 +0000 (08:14 -0800)]
hwmon: (pmbus/ltc2978) Code cleanup

Use u16 instead of int to store cached limit attributes.
This reduces allocated data size per driver instance by 48 bytes.
Use defines for the number of pages supported by individual chips.
Use ARRAY_SIZE for loops to initialize array variables, and
initialize all variables in the same code block.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (ltc4261) Fix 'Macros with complex values' checkpatch error
Guenter Roeck [Sun, 20 Jan 2013 05:24:23 +0000 (21:24 -0800)]
hwmon: (ltc4261) Fix 'Macros with complex values' checkpatch error

Fix:
ERROR: Macros with complex values should be enclosed in parenthesis

by unwinding the problematic macros.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (ltc4245) Fix 'Macros with complex values' checkpatch error
Guenter Roeck [Thu, 10 Jan 2013 18:48:34 +0000 (10:48 -0800)]
hwmon: (ltc4245) Fix 'Macros with complex values' checkpatch error

Fix:
ERROR: Macros with complex values should be enclosed in parenthesis

by unwinding the problematic macros.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (ltc4215) Fix 'Macros with complex values' checkpatch error
Guenter Roeck [Thu, 10 Jan 2013 18:30:31 +0000 (10:30 -0800)]
hwmon: (ltc4215) Fix 'Macros with complex values' checkpatch error

Fix:
ERROR: Macros with complex values should be enclosed in parenthesis

by unwinding the problematic macros.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (ltc4151) Fix 'Avoid unnecessary line continuations' checkpatch warning
Guenter Roeck [Sun, 20 Jan 2013 05:18:41 +0000 (21:18 -0800)]
hwmon: (ltc4151) Fix 'Avoid unnecessary line continuations' checkpatch warning

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (ina2xx) Fix 'Avoid unnecessary line continuations' checkpatch warning
Guenter Roeck [Thu, 10 Jan 2013 18:04:06 +0000 (10:04 -0800)]
hwmon: (ina2xx) Fix 'Avoid unnecessary line continuations' checkpatch warning

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: Fix checkpatch warning 'quoted string split across lines'
Guenter Roeck [Thu, 10 Jan 2013 18:01:24 +0000 (10:01 -0800)]
hwmon: Fix checkpatch warning 'quoted string split across lines'

Cc: Corentin Labbe <corentin.labbe@geomatys.fr>
Cc: Mark M. Hoffman <mhoffman@lightlink.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Juerg Haefliger <juergh@gmail.com>
Cc: Andreas Herrmann <herrmann.der.user@googlemail.com>
Cc: Rudolf Marek <r.marek@assembler.cz>
Cc: Jim Cromie <jim.cromie@gmail.com>
Cc: Roger Lucas <vt8231@hiddenengine.co.uk>
Cc: Marc Hulsman <m.hulsman@tudelft.nl>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: Fix CamelCase checkpatch warnings
Guenter Roeck [Wed, 13 Mar 2013 23:40:39 +0000 (16:40 -0700)]
hwmon: Fix CamelCase checkpatch warnings

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (nct6775) Drop read/write lock
Guenter Roeck [Fri, 8 Mar 2013 15:42:00 +0000 (07:42 -0800)]
hwmon: (nct6775) Drop read/write lock

The read/write lock is acquired for each read/write operation from/to the chip.
This occurs either during initialization, when it is not needed, or during
updates, when the update_lock is held as well, and it is not needed either.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (nct6775) Only report VID if supported and enabled
Guenter Roeck [Tue, 26 Feb 2013 17:43:50 +0000 (09:43 -0800)]
hwmon: (nct6775) Only report VID if supported and enabled

VID is not always enabled (NCT6775, NCT6776) or supported (NCT6779).

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (nct6775) Detect and report additional temperature sources
Guenter Roeck [Tue, 4 Dec 2012 16:03:37 +0000 (08:03 -0800)]
hwmon: (nct6775) Detect and report additional temperature sources

Scan all temperature sources used for fan control and report if additional
monitoring registers are available.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (nct6775) Add support for weighted fan control
Guenter Roeck [Tue, 4 Dec 2012 17:08:29 +0000 (09:08 -0800)]
hwmon: (nct6775) Add support for weighted fan control

The NCT677X series support weighted fan control. In this mode, a secondary
temperature source is used in addition to the primary temperature source to
control fan speed. Add support for this feature.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (nct6775) Add support for automatic fan control
Guenter Roeck [Tue, 4 Dec 2012 17:04:52 +0000 (09:04 -0800)]
hwmon: (nct6775) Add support for automatic fan control

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (nct6775) Add support for pwm, pwm_mode, and pwm_enable
Guenter Roeck [Tue, 4 Dec 2012 16:30:54 +0000 (08:30 -0800)]
hwmon: (nct6775) Add support for pwm, pwm_mode, and pwm_enable

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (nct6775) Add power management support
Guenter Roeck [Tue, 4 Dec 2012 16:01:39 +0000 (08:01 -0800)]
hwmon: (nct6775) Add power management support

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (nct6775) Add support for fan debounce module parameter
Guenter Roeck [Tue, 4 Dec 2012 15:59:32 +0000 (07:59 -0800)]
hwmon: (nct6775) Add support for fan debounce module parameter

If set, fan debounce is enabled when loading the driver.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (nct6775) Add support for fanX_pulses sysfs attribute
Guenter Roeck [Tue, 11 Dec 2012 15:29:06 +0000 (07:29 -0800)]
hwmon: (nct6775) Add support for fanX_pulses sysfs attribute

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (nct6775) Add support for fan speed attributes
Guenter Roeck [Tue, 4 Dec 2012 15:56:24 +0000 (07:56 -0800)]
hwmon: (nct6775) Add support for fan speed attributes

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (nct6775) Add support for temperature sensors
Guenter Roeck [Tue, 4 Dec 2012 11:26:05 +0000 (03:26 -0800)]
hwmon: (nct6775) Add support for temperature sensors

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (nct6775) Add case open detection
Guenter Roeck [Tue, 4 Dec 2012 11:13:34 +0000 (03:13 -0800)]
hwmon: (nct6775) Add case open detection

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: Driver for Nuvoton NCT6775F, NCT6776F, and NCT6779D
Guenter Roeck [Mon, 21 May 2012 02:29:48 +0000 (19:29 -0700)]
hwmon: Driver for Nuvoton NCT6775F, NCT6776F, and NCT6779D

This driver will replace the w83627ehf driver for NCT6775F and NCT6776F,
and provides support for NCT6779D.

This patch provides support for voltage monitor attributes.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: Fix 'Macros with complex values' checkpatch errors
Guenter Roeck [Thu, 10 Jan 2013 13:54:40 +0000 (05:54 -0800)]
hwmon: Fix 'Macros with complex values' checkpatch errors

Fix:

ERROR: Macros with complex values should be enclosed in parenthesis

when it is seen due to complex code and not due to multi-line variable
declarations.

Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Alistair John Strachan <alistair@devzero.co.uk>
Acked-by: Alistair John Strachan <alistair@devzero.co.uk>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: checkpatch cleanup: Replace printk with pr_debug or dev_dbg as appropriate
Guenter Roeck [Thu, 10 Jan 2013 13:49:55 +0000 (05:49 -0800)]
hwmon: checkpatch cleanup: Replace printk with pr_debug or dev_dbg as appropriate

Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Alistair John Strachan <alistair@devzero.co.uk>
Cc: Henrik Rydberg <rydberg@euromail.se>
Acked-by: Alistair John Strachan <alistair@devzero.co.uk>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (ntc_thermistor) Add DT with IIO support to NTC thermistor driver
Naveen Krishna Chatradhi [Wed, 13 Mar 2013 04:08:20 +0000 (09:38 +0530)]
hwmon: (ntc_thermistor) Add DT with IIO support to NTC thermistor driver

This patch adds DT support to NTC driver to parse the
platform data.

Also adds the support to work as an iio device client.

During the probe ntc driver gets the respective channels of ADC
and uses iio_raw_read calls to get the ADC converted value.

Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
[Guenter Roeck: fixed Kconfig dependencies; use ERR_CAST]
Tested-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (adt7x10) Add alarm interrupt support
Lars-Peter Clausen [Tue, 12 Mar 2013 10:38:47 +0000 (11:38 +0100)]
hwmon: (adt7x10) Add alarm interrupt support

This allows an userspace application to poll() on the alarm files to get
notified in case of a temperature threshold event.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (adt7410) Add support for the adt7310/adt7320
Lars-Peter Clausen [Tue, 12 Mar 2013 10:38:46 +0000 (11:38 +0100)]
hwmon: (adt7410) Add support for the adt7310/adt7320

The adt7310/adt7320 is the SPI version of the adt7410/adt7420. The register map
layout is a bit different, i.e. the register addresses differ between the two
variants, but the bit layouts of the individual registers are identical. So both
chip variants can easily be supported by the same driver. The issue of non
matching register address layouts is solved by a simple look-up table which
translates the I2C addresses to the SPI addresses.

The patch moves the bulk of the adt7410 driver to a common module that will be
shared by the adt7410 and adt7310 drivers. This common module implements the
driver logic and uses a set of virtual functions to perform IO access. The
adt7410 and adt7310 driver modules provide proper implementations of these IO
accessor functions for I2C respective SPI.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (adt7410) Don't re-read non-volatile registers
Lars-Peter Clausen [Tue, 12 Mar 2013 10:38:45 +0000 (11:38 +0100)]
hwmon: (adt7410) Don't re-read non-volatile registers

Currently each time the temperature register is read the driver also reads the
threshold and hysteresis registers. This increases the amount of I2C traffic and
time needed to read the temperature by a factor of ~5. Neither the threshold nor
the hysteresis change on their own, so once we have read them, we should be able
to just use the cached value of the registers. This patch modifies the code
accordingly and only reads the threshold and hysteresis registers once during
probe.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agohwmon: (mc13783-adc.c) use module_platform_driver_probe()
Jingoo Han [Tue, 5 Mar 2013 03:12:55 +0000 (12:12 +0900)]
hwmon: (mc13783-adc.c) use module_platform_driver_probe()

This patch uses module_platform_driver_probe() macro which makes
the code smaller and simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
11 years agoLinux 3.9-rc6
Linus Torvalds [Mon, 8 Apr 2013 03:49:54 +0000 (20:49 -0700)]
Linux 3.9-rc6

11 years agoMerge git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sun, 7 Apr 2013 20:01:25 +0000 (13:01 -0700)]
Merge git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fix from Gleb Natapov:
 "Bugfix for the regression introduced by commit c300aa64ddf5"

* git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: Allow cross page reads and writes from cached translations.

11 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 7 Apr 2013 19:59:55 +0000 (12:59 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Peter Anvin:
 "Two quite small fixes: one a build problem, and the other fixes
  seccomp filters on x32."

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: Fix rebuild with EFI_STUB enabled
  x86: remove the x32 syscall bitmask from syscall_get_nr()

11 years agoalpha: irq: remove deprecated use of IRQF_DISABLED
Will Deacon [Sun, 7 Apr 2013 09:36:12 +0000 (21:36 +1200)]
alpha: irq: remove deprecated use of IRQF_DISABLED

Interrupt handlers are always invoked with interrupts disabled, so
remove all uses of the deprecated IRQF_DISABLED flag.

Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Michael Cree <mcree@orcon.net.nz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoalpha: irq: run all handlers with interrupts disabled
Will Deacon [Sun, 7 Apr 2013 09:36:11 +0000 (21:36 +1200)]
alpha: irq: run all handlers with interrupts disabled

Linux has expected that interrupt handlers are executed with local
interrupts disabled for a while now, so ensure that this is the case on
Alpha even for non-device interrupts such as IPIs.

Without this patch, secondary boot results in the following backtrace:

  warning: at kernel/softirq.c:139 __local_bh_enable+0xb8/0xd0()
  trace:
    __local_bh_enable+0xb8/0xd0
    irq_enter+0x74/0xa0
    scheduler_ipi+0x50/0x100
    handle_ipi+0x84/0x260
    do_entint+0x1ac/0x2e0
    irq_exit+0x60/0xa0
    handle_irq+0x98/0x100
    do_entint+0x2c8/0x2e0
    ret_from_sys_call+0x0/0x10
    load_balance+0x3e4/0x870
    cpu_idle+0x24/0x80
    rcu_eqs_enter_common.isra.38+0x0/0x120
    cpu_idle+0x40/0x80
    rest_init+0xc0/0xe0
    _stext+0x1c/0x20

A similar dump occurs if you try to reboot using magic-sysrq.

Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Michael Cree <mcree@orcon.net.nz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoalpha: makefile: don't enforce small data model for kernel builds
Will Deacon [Sun, 7 Apr 2013 09:36:10 +0000 (21:36 +1200)]
alpha: makefile: don't enforce small data model for kernel builds

Due to all of the goodness being packed into today's kernels, the
resulting image isn't as slim as it once was.

In light of this, don't pass -msmall-data to gcc, which otherwise results
in link failures due to impossible relocations when compiling anything but
the most trivial configurations.

Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Tested-by: Thorsten Kranzkowski <dl8bcu@dl8bcu.de>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Michael Cree <mcree@orcon.net.nz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoalpha: Add irongate_io to PCI bus resources
Jay Estabrook [Sun, 7 Apr 2013 09:36:09 +0000 (21:36 +1200)]
alpha: Add irongate_io to PCI bus resources

Fixes a NULL pointer dereference at boot on UP1500.

Cc: stable@vger.kernel.org
Reviewed-and-Tested-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Jay Estabrook <jay.estabrook@gmail.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Michael Cree <mcree@orcon.net.nz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoKVM: Allow cross page reads and writes from cached translations.
Andrew Honig [Fri, 29 Mar 2013 16:35:21 +0000 (09:35 -0700)]
KVM: Allow cross page reads and writes from cached translations.

This patch adds support for kvm_gfn_to_hva_cache_init functions for
reads and writes that will cross a page.  If the range falls within
the same memslot, then this will be a fast operation.  If the range
is split between two memslots, then the slower kvm_read_guest and
kvm_write_guest are used.

Tested: Test against kvm_clock unit tests.

Signed-off-by: Andrew Honig <ahonig@google.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
11 years agoMerge tag 'dm-3.9-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm
Linus Torvalds [Sat, 6 Apr 2013 02:30:14 +0000 (19:30 -0700)]
Merge tag 'dm-3.9-fixes-2' of git://git./linux/kernel/git/agk/linux-dm

Pull device-mapper fixes from Alasdair Kergon:
 "A pair of patches to fix the writethrough mode of the device-mapper
  cache target when the device being cached is not itself wrapped with
  device-mapper."

* tag 'dm-3.9-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm:
  dm cache: reduce bio front_pad size in writeback mode
  dm cache: fix writes to cache device in writethrough mode

11 years agoMerge tag 'pci-v3.9-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Linus Torvalds [Sat, 6 Apr 2013 02:29:36 +0000 (19:29 -0700)]
Merge tag 'pci-v3.9-fixes-1' of git://git./linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:
 "PCI updates for v3.9:

  ASPM
      Revert "PCI/ACPI: Request _OSC control before scanning PCI root bus"
  kexec
      PCI: Don't try to disable Bus Master on disconnected PCI devices
  Platform ROM images
      PCI: Add PCI ROM helper for platform-provided ROM images
      nouveau: Attempt to use platform-provided ROM image
      radeon: Attempt to use platform-provided ROM image
  Hotplug
      PCI/ACPI: Always resume devices on ACPI wakeup notifications
      PCI/PM: Disable runtime PM of PCIe ports
  EISA
      EISA/PCI: Fix bus res reference
      EISA/PCI: Init EISA early, before PNP"

* tag 'pci-v3.9-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI/PM: Disable runtime PM of PCIe ports
  PCI/ACPI: Always resume devices on ACPI wakeup notifications
  PCI: Don't try to disable Bus Master on disconnected PCI devices
  Revert "PCI/ACPI: Request _OSC control before scanning PCI root bus"
  radeon: Attempt to use platform-provided ROM image
  nouveau: Attempt to use platform-provided ROM image
  EISA/PCI: Init EISA early, before PNP
  EISA/PCI: Fix bus res reference
  PCI: Add PCI ROM helper for platform-provided ROM images

11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Fri, 5 Apr 2013 21:04:10 +0000 (14:04 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Fix erroneous sock_orphan() leading to crashes and double
    kfree_skb() in NFC protocol.  From Thierry Escande and Samuel Ortiz.

 2) Fix use after free in remain-on-channel mac80211 code, from Johannes
    Berg.

 3) nf_reset() needs to reset the NF tracing cookie, otherwise we can
    leak it from one namespace into another.  Fix from Gao Feng and
    Patrick McHardy.

 4) Fix overflow in channel scanning array of mwifiex driver, from Stone
    Piao.

 5) Fix loss of link after suspend/shutdown in r8169, from Hayes Wang.

 6) Synchronization of unicast address lists to the undelying device
    doesn't work because whether to sync is maintained as a boolean
    rather than a true count.  Fix from Vlad Yasevich.

 7) Fix corruption of TSO packets in atl1e by limiting the segmented
    packet length.  From Hannes Frederic Sowa.

 8) Revert bogus AF_UNIX credential passing change and fix the
    coalescing issue properly, from Eric W Biederman.

 9) Changes of ipv4 address lifetime settings needs to generate a
    notification, from Jiri Pirko.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (22 commits)
  netfilter: don't reset nf_trace in nf_reset()
  net: ipv4: notify when address lifetime changes
  ixgbe: fix registration order of driver and DCA nofitication
  af_unix: If we don't care about credentials coallesce all messages
  Revert "af_unix: dont send SCM_CREDENTIAL when dest socket is NULL"
  bonding: remove sysfs before removing devices
  atl1e: limit gso segment size to prevent generation of wrong ip length fields
  net: count hw_addr syncs so that unsync works properly.
  r8169: fix auto speed down issue
  netfilter: ip6t_NPT: Fix translation for non-multiple of 32 prefix lengths
  mwifiex: limit channel number not to overflow memory
  NFC: microread: Fix build failure due to a new MEI bus API
  iwlwifi: dvm: fix the passive-no-RX workaround
  netfilter: nf_conntrack: fix error return code
  NFC: llcp: Keep the connected socket parent pointer alive
  mac80211: fix idle handling sequence
  netfilter: nfnetlink_acct: return -EINVAL if object name is empty
  netfilter: nfnetlink_queue: fix error return code in nfnetlink_queue_init()
  netfilter: reset nf_trace in nf_reset
  mac80211: fix remain-on-channel cancel crash
  ...

11 years agox86: Fix rebuild with EFI_STUB enabled
Jan Beulich [Wed, 3 Apr 2013 14:47:33 +0000 (15:47 +0100)]
x86: Fix rebuild with EFI_STUB enabled

eboot.o and efi_stub_$(BITS).o didn't get added to "targets", and hence
their .cmd files don't get included by the build machinery, leading to
the files always getting rebuilt.

Rather than adding the two files individually, take the opportunity and
add $(VMLINUX_OBJS) to "targets" instead, thus allowing the assignment
at the top of the file to be shrunk quite a bit.

At the same time, remove a pointless flags override line - the variable
assigned to was misspelled anyway, and the options added are
meaningless for assembly sources.

[ hpa: the patch is not minimal, but I am taking it for -urgent anyway
  since the excess impact of the patch seems to be small enough. ]

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Link: http://lkml.kernel.org/r/515C5D2502000078000CA6AD@nat28.tlf.novell.com
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
11 years agonetfilter: don't reset nf_trace in nf_reset()
Patrick McHardy [Fri, 5 Apr 2013 18:42:05 +0000 (20:42 +0200)]
netfilter: don't reset nf_trace in nf_reset()

Commit 130549fe ("netfilter: reset nf_trace in nf_reset") added code
to reset nf_trace in nf_reset(). This is wrong and unnecessary.

nf_reset() is used in the following cases:

- when passing packets up the the socket layer, at which point we want to
  release all netfilter references that might keep modules pinned while
  the packet is queued. nf_trace doesn't matter anymore at this point.

- when encapsulating or decapsulating IPsec packets. We want to continue
  tracing these packets after IPsec processing.

- when passing packets through virtual network devices. Only devices on
  that encapsulate in IPv4/v6 matter since otherwise nf_trace is not
  used anymore. Its not entirely clear whether those packets should
  be traced after that, however we've always done that.

- when passing packets through virtual network devices that make the
  packet cross network namespace boundaries. This is the only cases
  where we clearly want to reset nf_trace and is also what the
  original patch intended to fix.

Add a new function nf_reset_trace() and use it in dev_forward_skb() to
fix this properly.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Linus Torvalds [Fri, 5 Apr 2013 19:23:12 +0000 (12:23 -0700)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus

Pull MIPS fixes from Ralf Baechle:
 "Fixes for a number of small glitches in various corners of the MIPS
  tree.  No particular areas is standing out.

  With this applied all MIPS defconfigs are building fine.  No merge
  conflicts are expected."

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: Delete definition of SA_RESTORER.
  MIPS: Fix ISA level which causes secondary cache init bypassing and more
  MIPS: Fix build error cavium-octeon without CONFIG_SMP
  MIPS: Kconfig: Rename SNIPROM too
  MIPS: Alchemy: Fix typo "CONFIG_DEBUG_PCI"
  MIPS: Unbreak function tracer for 64-bit kernel.

11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-fixes
Linus Torvalds [Fri, 5 Apr 2013 19:22:02 +0000 (12:22 -0700)]
Merge git://git./linux/kernel/git/steve/gfs2-3.0-fixes

Pull GFS2 fixes from Steven Whitehouse:
 "There are two patches which fix up a couple of minor issues in the DLM
  interface code, a missing error path in gfs2_rs_alloc(), one patch
  which fixes a problem during "withdraw" and a fix for discards/FITRIM
  when using 4k sector sized devices."

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-fixes:
  GFS2: Issue discards in 512b sectors
  GFS2: Fix unlock of fcntl locks during withdrawn state
  GFS2: return error if malloc failed in gfs2_rs_alloc()
  GFS2: use memchr_inv
  GFS2: use kmalloc for lvb bitmap

11 years agofirmware,IB/qib: revert firmware file move
Mike Marciniszyn [Fri, 5 Apr 2013 18:30:13 +0000 (14:30 -0400)]
firmware,IB/qib: revert firmware file move

Commit e2eed58b4fbf ("IB/qib: change QLogic to Intel") moved a firmware
file potentially breaking the ABI.

This patch reverts that aspect of the fix as well as reverting the
firmware name as used in qib.

Reported-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoMerge tag 'spi-fix-v3.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie...
Linus Torvalds [Fri, 5 Apr 2013 17:04:41 +0000 (10:04 -0700)]
Merge tag 'spi-fix-v3.9-rc5' of git://git./linux/kernel/git/broonie/misc

Pull spi fixes from Mark Brown:
 "A bunch of small driver fixes plus a fix for error handling in the
  core - nothing too exciting overall."

* tag 'spi-fix-v3.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc:
  spi/mpc512x-psc: optionally keep PSC SS asserted across xfer segmensts
  spi: Unlock a spinlock before calling into the controller driver.
  spi/s3c64xx: modified error interrupt handling and init
  spi/bcm63xx: don't disable non enabled clocks in probe error path
  spi/bcm63xx: Remove unused variable
  spi: slink-tegra20: move runtime pm calls to transfer_one_message

11 years agoGFS2: Issue discards in 512b sectors
Bob Peterson [Fri, 22 Mar 2013 14:07:24 +0000 (10:07 -0400)]
GFS2: Issue discards in 512b sectors

This patch changes GFS2's discard issuing code so that it calls
function sb_issue_discard rather than blkdev_issue_discard. The
code was calling blkdev_issue_discard and specifying the correct
sector offset and sector size, but blkdev_issue_discard expects
these values to be in terms of 512 byte sectors, even if the native
sector size for the device is different. Calling sb_issue_discard
with the BLOCK size instead ensures the correct block-to-512b-sector
translation. I verified that "minlen" is specified in blocks, so
comparing it to a number of blocks is correct.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
11 years agoRevert "drivers/rtc/rtc-at91rm9200.c: use a variable for storing IMR"
Johan Hovold [Fri, 5 Apr 2013 16:16:34 +0000 (18:16 +0200)]
Revert "drivers/rtc/rtc-at91rm9200.c: use a variable for storing IMR"

This reverts commit 0ef1594c017521ea89278e80fe3f80dafb17abde.

This patch introduced a few races which cannot be easily fixed with a
small follow-up patch. Furthermore, the SoC with the broken hardware
register, which this patch intended to add support for, can only be used
with device trees, which this driver currently does not support.

[ Here is the discussion that led to this "revert" patch:
  https://lkml.org/lkml/2013/4/3/176 ]

Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoMerge tag 'fbdev-fixes-3.9-rc6' of git://gitorious.org/linux-omap-dss2/linux
Linus Torvalds [Fri, 5 Apr 2013 16:15:46 +0000 (09:15 -0700)]
Merge tag 'fbdev-fixes-3.9-rc6' of git://gitorious.org/linux-omap-dss2/linux

Pull fbdev fixes from Tomi Valkeinen:
 "Fix uvesafb crash bug and typoed flag name in fbmon's new videomode
  code"

* tag 'fbdev-fixes-3.9-rc6' of git://gitorious.org/linux-omap-dss2/linux:
  video:uvesafb: Fix dereference NULL pointer code path
  fbmon: use VESA_DMT_VSYNC_HIGH to fix typo

11 years agoMerge tag 'sound-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Fri, 5 Apr 2013 16:06:57 +0000 (09:06 -0700)]
Merge tag 'sound-3.9' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "This contains slightly more volumes than usual at this stage, mostly
  because of my vacation in the last week.  Nothing to scare, all small
  and/or trivial fixes:

   - Fix loop path handling in ASoC DAPM
   - Some memory handling fixes in ASoC core
   - Fix spear_pcm to adapt to the updated API
   - HD-audio HDMI ELD handling fixes
   - Fix for CM6331 USB-audio SRC change bugs
   - Revert power_save_controller option change due to user-space usage
   - A few other small ASoC and HD-audio fixes"

* tag 'sound-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda/generic - fix uninitialized variable
  Revert "ALSA: hda - Allow power_save_controller option override DCAPS"
  ALSA: hda - fix typo in proc output
  ALSA: hda - Enabling Realtek ALC 671 codec
  ALSA: usb: Work around CM6631 sample rate change bug
  ALSA: hda - bug fix on HDMI ELD debug message
  ALSA: hda - bug fix on return value when getting HDMI ELD info
  ASoC: dma-sh7760: Fix compile error
  ASoC: core: fix invalid free of devm_ allocated data
  ASoC: spear_pcm: Update to new pcm_new() API
  ASoC:: max98090: Remove executable bit
  ASoC: dapm: Fix pointer dereference in is_connected_output_ep()
  ASoC: pcm030 audio fabric: remove __init from probe
  ASoC: imx-ssi: Fix occasional AC97 reset failure
  ASoC: core: fix possible memory leak in snd_soc_bytes_put()
  ASoC: wm_adsp: fix possible memory leak in wm_adsp_load_coeff()
  ASoC: dapm: Fix handling of loops
  ASoC: si476x: Add missing break for SNDRV_PCM_FORMAT_S8 switch case

11 years agodm cache: reduce bio front_pad size in writeback mode
Mike Snitzer [Fri, 5 Apr 2013 14:36:34 +0000 (15:36 +0100)]
dm cache: reduce bio front_pad size in writeback mode

A recent patch to fix the dm cache target's writethrough mode extended
the bio's front_pad to include a 1056-byte struct dm_bio_details.
Writeback mode doesn't need this, so this patch reduces the
per_bio_data_size to 16 bytes in this case instead of 1096.

The dm_bio_details structure was added in "dm cache: fix writes to
cache device in writethrough mode" which fixed commit e2e74d617e ("dm
cache: fix race in writethrough implementation").  In writeback mode
we avoid allocating the writethrough-specific members of the
per_bio_data structure (the dm_bio_details structure included).

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
11 years agodm cache: fix writes to cache device in writethrough mode
Darrick J. Wong [Fri, 5 Apr 2013 14:36:32 +0000 (15:36 +0100)]
dm cache: fix writes to cache device in writethrough mode

The dm-cache writethrough strategy introduced by commit e2e74d617eadc15
("dm cache: fix race in writethrough implementation") issues a bio to
the origin device, remaps and then issues the bio to the cache device.
This more conservative in-series approach was selected to favor
correctness over performance (of the previous parallel writethrough).
However, this in-series implementation that reuses the same bio to write
both the origin and cache device didn't take into account that the block
layer's req_bio_endio() modifies a completing bio's bi_sector and
bi_size.  So the new writethrough strategy needs to preserve these bio
fields, and restore them before submission to the cache device,
otherwise nothing gets written to the cache (because bi_size is 0).

This patch adds a struct dm_bio_details field to struct per_bio_data,
and uses dm_bio_record() and dm_bio_restore() to ensure the bio is
restored before reissuing to the cache device.  Adding such a large
structure to the per_bio_data is not ideal but we can improve this
later, for now correctness is the important thing.

This problem initially went unnoticed because the dm-cache test-suite
uses a linear DM device for the dm-cache device's origin device.
Writethrough worked as expected because DM submits a *clone* of the
original bio, so the original bio which was reused for the cache was
never touched.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
11 years agoMIPS: Delete definition of SA_RESTORER.
Ralf Baechle [Mon, 25 Mar 2013 12:43:14 +0000 (13:43 +0100)]
MIPS: Delete definition of SA_RESTORER.

SA_RESTORER used to be defined as 0x04000000 but only the O32 ABI ever
supported its use and no libc was using it, so the entire sa-restorer
functionality was removed with lmo commit 39bffc12c3580ab [Zap sa_restorer.]
for 2.5.48 retaining only the SA_RESTORER definition as a reminder to avoid
accidental reuse of the mask bit.

Upstream cdef9602fbf1871a43f0f1b5cea10dd0f275167d [signal: always clear
sa_restorer on execve] adds code that assumes sa_sigaction has an
sa_restorer field, if SA_RESTORER is defined which would break MIPS.
So remove the SA_RESTORER definition before the v3.8.4 merge.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
(cherry picked from commit 17da8d63add23830892ac4dc2cbb3b5d4ffb79a8)

11 years agoMIPS: Fix ISA level which causes secondary cache init bypassing and more
Deng-Cheng Zhu [Mon, 1 Apr 2013 18:14:28 +0000 (18:14 +0000)]
MIPS: Fix ISA level which causes secondary cache init bypassing and more

The commit a96102be70 introduced set_isa() where compatible ISA info is
also set aside from the one gets passed in. It means, for example, 1004K
will have MIPS_CPU_ISA_M32R2/M32R1/II/I flags. This leads to things like
the following inappropriate:

if (c->isa_level == MIPS_CPU_ISA_M32R1 ||
    c->isa_level == MIPS_CPU_ISA_M32R2 ||
    c->isa_level == MIPS_CPU_ISA_M64R1 ||
    c->isa_level == MIPS_CPU_ISA_M64R2)

This patch fixes it.

Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
11 years agoMIPS: Fix build error cavium-octeon without CONFIG_SMP
EunBong Song [Sun, 24 Mar 2013 22:18:35 +0000 (22:18 +0000)]
MIPS: Fix build error cavium-octeon without CONFIG_SMP

Singed-off-by: EunBong Song <eunb.song@samsung.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
11 years agoMIPS: Kconfig: Rename SNIPROM too
Paul Bolle [Mon, 25 Mar 2013 09:39:54 +0000 (09:39 +0000)]
MIPS: Kconfig: Rename SNIPROM too

CONFIG_SNIPROM was renamed to CONFIG_FW_SNIPROM in v3.8. Let's rename
SNIPROM itself too.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Cc: linux-mips@linux-mips.org;
Cc: linux-kernel@vger.kernel.org
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
11 years agoMIPS: Alchemy: Fix typo "CONFIG_DEBUG_PCI"
Paul Bolle [Thu, 4 Apr 2013 12:47:01 +0000 (12:47 +0000)]
MIPS: Alchemy: Fix typo "CONFIG_DEBUG_PCI"

Commit 7517de348663b08a808aff44b5300e817157a568 ("MIPS: Alchemy: Redo
PCI as platform driver") added a reference to CONFIG_DEBUG_PCI. Change
it to CONFIG_PCI_DEBUG, as that is a valid Kconfig macro.

Also add a newline to a debugging printk that this fix enables.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
11 years agoMIPS: Unbreak function tracer for 64-bit kernel.
David Daney [Tue, 2 Apr 2013 22:59:29 +0000 (22:59 +0000)]
MIPS: Unbreak function tracer for 64-bit kernel.

Commit 58b69401c797 [MIPS: Function tracer: Fix broken function tracing]
completely broke the function tracer for 64-bit kernels.  The symptom is
a system hang very early in the boot process.

The fix: Remove/fix $sp adjustments for 64-bit case.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: Al Cooper <alcooperx@gmail.com>
Cc: viric@viric.name
Cc: stable@vger.kernel.org # 3.8.x
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
11 years agoALSA: hda/generic - fix uninitialized variable
Jiri Slaby [Thu, 4 Apr 2013 20:32:10 +0000 (22:32 +0200)]
ALSA: hda/generic - fix uninitialized variable

changed is not initialized in path_power_down_sync, but it is expected
to be false in case no change happened in the loop. So set it to
false.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
11 years agonet: ipv4: notify when address lifetime changes
Jiri Pirko [Thu, 4 Apr 2013 08:33:00 +0000 (08:33 +0000)]
net: ipv4: notify when address lifetime changes

if userspace changes lifetime of address, send netlink notification and
call notifier.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoixgbe: fix registration order of driver and DCA nofitication
Jakub Kicinski [Wed, 3 Apr 2013 16:50:54 +0000 (16:50 +0000)]
ixgbe: fix registration order of driver and DCA nofitication

ixgbe_notify_dca cannot be called before driver registration
because it expects driver's klist_devices to be allocated and
initialized. While on it make sure debugfs files are removed
when registration fails.

Cc: stable <stable@vger.kernel.org>
Signed-off-by: Jakub Kicinski <jakub.kicinski@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoaf_unix: If we don't care about credentials coallesce all messages
Eric W. Biederman [Wed, 3 Apr 2013 16:14:47 +0000 (16:14 +0000)]
af_unix: If we don't care about credentials coallesce all messages

It was reported that the following LSB test case failed
https://lsbbugs.linuxfoundation.org/attachment.cgi?id=2144 because we
were not coallescing unix stream messages when the application was
expecting us to.

The problem was that the first send was before the socket was accepted
and thus sock->sk_socket was NULL in maybe_add_creds, and the second
send after the socket was accepted had a non-NULL value for sk->socket
and thus we could tell the credentials were not needed so we did not
bother.

The unnecessary credentials on the first message cause
unix_stream_recvmsg to start verifying that all messages had the same
credentials before coallescing and then the coallescing failed because
the second message had no credentials.

Ignoring credentials when we don't care in unix_stream_recvmsg fixes a
long standing pessimization which would fail to coallesce messages when
reading from a unix stream socket if the senders were different even if
we did not care about their credentials.

I have tested this and verified that the in the LSB test case mentioned
above that the messages do coallesce now, while the were failing to
coallesce without this change.

Reported-by: Karel Srot <ksrot@redhat.com>
Reported-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoRevert "af_unix: dont send SCM_CREDENTIAL when dest socket is NULL"
Eric W. Biederman [Wed, 3 Apr 2013 16:13:35 +0000 (16:13 +0000)]
Revert "af_unix: dont send SCM_CREDENTIAL when dest socket is NULL"

This reverts commit 14134f6584212d585b310ce95428014b653dfaf6.

The problem that the above patch was meant to address is that af_unix
messages are not being coallesced because we are sending unnecesarry
credentials.  Not sending credentials in maybe_add_creds totally
breaks unconnected unix domain sockets that wish to send credentails
to other sockets.

In practice this break some versions of udev because they receive a
message and the sending uid is bogus so they drop the message.

Reported-by: Sven Joachim <svenjoac@gmx.de>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobonding: remove sysfs before removing devices
Veaceslav Falico [Wed, 3 Apr 2013 05:46:33 +0000 (05:46 +0000)]
bonding: remove sysfs before removing devices

We have a race condition if we try to rmmod bonding and simultaneously add
a bond master through sysfs. In bonding_exit() we first remove the devices
(through rtnl_link_unregister() ) and only after that we remove the sysfs.
If we manage to add a device through sysfs after that the devices were
removed - we'll end up with that device/sysfs structure and with the module
unloaded.

Fix this by first removing the sysfs and only after that calling
rtnl_link_unregister().

Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoatl1e: limit gso segment size to prevent generation of wrong ip length fields
Hannes Frederic Sowa [Tue, 2 Apr 2013 14:36:46 +0000 (14:36 +0000)]
atl1e: limit gso segment size to prevent generation of wrong ip length fields

The limit of 0x3c00 is taken from the windows driver.

Suggested-by: Huang, Xiong <xiong@qca.qualcomm.com>
Cc: Huang, Xiong <xiong@qca.qualcomm.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: count hw_addr syncs so that unsync works properly.
Vlad Yasevich [Tue, 2 Apr 2013 21:10:07 +0000 (17:10 -0400)]
net: count hw_addr syncs so that unsync works properly.

A few drivers use dev_uc_sync/unsync to synchronize the
address lists from master down to slave/lower devices.  In
some cases (bond/team) a single address list is synched down
to multiple devices.  At the time of unsync, we have a leak
in these lower devices, because "synced" is treated as a
boolean and the address will not be unsynced for anything after
the first device/call.

Treat "synced" as a count (same as refcount) and allow all
unsync calls to work.

Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge tag 'pm+acpi-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Thu, 4 Apr 2013 22:56:28 +0000 (15:56 -0700)]
Merge tag 'pm+acpi-3.9-rc6' of git://git./linux/kernel/git/rafael/linux-pm

Pull ACPI and power management fixes from Rafael Wysocki:

 - Revert of a recent cpuidle change that caused Nehalem machines to
   hang on boot from Alex Shi.

 - USB power management fix addressing a crash in the port device
   object's release routine from Rafael J Wysocki.

 - Device PM QoS fix for a potential deadlock related to sysfs interface
   from Rafael J Wysocki.

 - Fix for a cpufreq crash when the /cpus Device Tree node is missing
   from Paolo Pisati.

 - Fix for a build issue on ia64 related to the Boot Graphics Resource
   Table (BGRT) from Tony Luck.

 - Two fixes for ACPI handles being set incorrectly for device objects
   that don't correspond to any ACPI namespace nodes in the I2C and SPI
   subsystems from Rafael J Wysocki.

 - Fix for compiler warnings related to CONFIG_PM_DEVFREQ being unset
   from Rajagopal Venkat.

 - Fix for a symbol definition typo in cpufreq_governor.h from Borislav
   Petkov.

* tag 'pm+acpi-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / BGRT: Don't let users configure BGRT on non X86 systems
  cpuidle / ACPI: recover percpu ACPI processor cstate
  ACPI / I2C: Use parent's ACPI_HANDLE() in acpi_i2c_register_devices()
  cpufreq: Correct header guards typo
  ACPI / SPI: Use parent's ACPI_HANDLE() in acpi_register_spi_devices()
  cpufreq: check OF node /cpus presence before dereferencing it
  PM / devfreq: Fix compiler warnings for CONFIG_PM_DEVFREQ unset
  PM / QoS: Avoid possible deadlock related to sysfs access
  USB / PM: Don't try to hide PM QoS flags from usb_port_device_release()

11 years agor8169: fix auto speed down issue
hayeswang [Sun, 31 Mar 2013 17:02:04 +0000 (17:02 +0000)]
r8169: fix auto speed down issue

It would cause no link after suspending or shutdowning when the
nic changes the speed to 10M and connects to a link partner which
forces the speed to 100M.

Check the link partner ability to determine which speed to set.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'master' of git://1984.lsi.us.es/nf
David S. Miller [Thu, 4 Apr 2013 21:41:53 +0000 (17:41 -0400)]
Merge branch 'master' of git://1984.lsi.us.es/nf

Pablo Neira Ayuso says:

====================
The following patchset contains netfilter updates for your net tree,
they are:

* Fix missing the skb->trace reset in nf_reset, noticed by Gao Feng
  while using the TRACE target with several net namespaces.

* Fix prefix translation in IPv6 NPT if non-multiple of 32 prefixes
  are used, from Matthias Schiffer.

* Fix invalid nfacct objects with empty name, they are now rejected
  with -EINVAL, spotted by Michael Zintakis, patch from myself.

* A couple of fixes for wrong return values in the error path of
  nfnetlink_queue and nf_conntrack, from Wei Yongjun.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville...
David S. Miller [Thu, 4 Apr 2013 21:39:06 +0000 (17:39 -0400)]
Merge branch 'for-davem' of git://git./linux/kernel/git/linville/wireless into wireless

John W. Linville says:

====================
Here are some more fixes intended for the 3.9 stream...

Regarding the mac80211 bits, Johannes says:

"I had changed the idle handling to simplify it, but broken the
sequencing of commands, at least for ath9k-htc, one patch restores the
sequence. The other patch fixes a crash Jouni found while stress-testing
the remain-on-channel code, when an item is deleted the work struct can
run twice and crash the second time."

As for the iwlwifi bits, Johannes says:

"The only fix here is to the passive-no-RX firmware regulatory
enforcement driver support code to not drop auth frames in quick
succession, leading to not being able to connect to APs on passive
channels in certain circumstances."

Don't forget the NFC bits, about which Samuel says:

"This time we have:

- A crash fix for when a DGRAM LLCP socket is listening while the NFC adapter
  is physically removed.
- A potential double skb free when the LLCP socket receive queue is full.
- A fix for properly handling multiple and consecutive LLCP connections, and
  not trash the socket ack log.
- A build failure for the MEI microread physical layer, now that the MEI bus
  APIs have been merged into char-misc-next."

On top of that, Stone Piao provides an mwifiex fix to avoid accessing
beyond the end of a buffer.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agomm: prevent mmap_cache race in find_vma()
Jan Stancek [Thu, 4 Apr 2013 18:35:10 +0000 (11:35 -0700)]
mm: prevent mmap_cache race in find_vma()

find_vma() can be called by multiple threads with read lock
held on mm->mmap_sem and any of them can update mm->mmap_cache.
Prevent compiler from re-fetching mm->mmap_cache, because other
readers could update it in the meantime:

               thread 1                             thread 2
                                        |
  find_vma()                            |  find_vma()
    struct vm_area_struct *vma = NULL;  |
    vma = mm->mmap_cache;               |
    if (!(vma && vma->vm_end > addr     |
        && vma->vm_start <= addr)) {    |
                                        |    mm->mmap_cache = vma;
    return vma;                         |
     ^^ compiler may optimize this      |
        local variable out and re-read  |
        mm->mmap_cache                  |

This issue can be reproduced with gcc-4.8.0-1 on s390x by running
mallocstress testcase from LTP, which triggers:

  kernel BUG at mm/rmap.c:1088!
    Call Trace:
     ([<000003d100c57000>] 0x3d100c57000)
      [<000000000023a1c0>] do_wp_page+0x2fc/0xa88
      [<000000000023baae>] handle_pte_fault+0x41a/0xac8
      [<000000000023d832>] handle_mm_fault+0x17a/0x268
      [<000000000060507a>] do_protection_exception+0x1e2/0x394
      [<0000000000603a04>] pgm_check_handler+0x138/0x13c
      [<000003fffcf1f07a>] 0x3fffcf1f07a
    Last Breaking-Event-Address:
      [<000000000024755e>] page_add_new_anon_rmap+0xc2/0x168

Thanks to Jakub Jelinek for his insight on gcc and helping to
track this down.

Signed-off-by: Jan Stancek <jstancek@redhat.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoMerge tag 'upstream-3.9-rc6' of git://git.infradead.org/linux-ubifs
Linus Torvalds [Thu, 4 Apr 2013 15:41:43 +0000 (08:41 -0700)]
Merge tag 'upstream-3.9-rc6' of git://git.infradead.org/linux-ubifs

Pull UBIFS fix from Artem Bityutskiy:
 "Make the space fixup feature work in the case when the file-system is
  first mounted R/O and then remounted R/W."

* tag 'upstream-3.9-rc6' of git://git.infradead.org/linux-ubifs:
  UBIFS: make space fixup work in the remount case

11 years agoMerge branch 'pm-fixes' into fixes
Rafael J. Wysocki [Thu, 4 Apr 2013 15:41:10 +0000 (17:41 +0200)]
Merge branch 'pm-fixes' into fixes

* pm-fixes:
  cpufreq: Correct header guards typo
  cpufreq: check OF node /cpus presence before dereferencing it
  PM / devfreq: Fix compiler warnings for CONFIG_PM_DEVFREQ unset
  PM / QoS: Avoid possible deadlock related to sysfs access
  USB / PM: Don't try to hide PM QoS flags from usb_port_device_release()

11 years agoMerge branch 'acpi-fixes' into fixes
Rafael J. Wysocki [Thu, 4 Apr 2013 15:40:59 +0000 (17:40 +0200)]
Merge branch 'acpi-fixes' into fixes

* acpi-fixes:
  ACPI / BGRT: Don't let users configure BGRT on non X86 systems
  cpuidle / ACPI: recover percpu ACPI processor cstate
  ACPI / I2C: Use parent's ACPI_HANDLE() in acpi_i2c_register_devices()
  ACPI / SPI: Use parent's ACPI_HANDLE() in acpi_register_spi_devices()

11 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Linus Torvalds [Thu, 4 Apr 2013 15:40:45 +0000 (08:40 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/hid

Pull HID fixes from Jiri Kosina:

 - Workaround for device ID conflict between Masterkit MA901 usb radio
   device and Atmel V-USB devices, to avoid regressions from older
   kernels, by Alexey Klimov

 - fix for possible race during input device registration in magicmouse
   driver, by Benjamin Tissoires

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: magicmouse: fix race between input_register() and probe()
  media: radio-ma901: return ENODEV in probe if usb_device doesn't match
  HID: fix Masterkit MA901 hid quirks

11 years agoMerge tag 'gpio-fixes-v3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...
Linus Torvalds [Thu, 4 Apr 2013 15:40:14 +0000 (08:40 -0700)]
Merge tag 'gpio-fixes-v3.9' of git://git./linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:
 "Two GPIO fixes for the v3.9 series:
   - Fix erroneous return value in the ICH driver
   - Make the STMPE driver proper properly on device tree boots"

* tag 'gpio-fixes-v3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: stmpe: pass DT node to irqdomain
  gpio-ich: Fix value returned by ichx_gpio_request

11 years agoRevert "ALSA: hda - Allow power_save_controller option override DCAPS"
Takashi Iwai [Thu, 4 Apr 2013 13:35:24 +0000 (15:35 +0200)]
Revert "ALSA: hda - Allow power_save_controller option override DCAPS"

This reverts commit 6ab317419c62850a71e2adfd1573e5ee87d8774f.

The commit [6ab317419c: ALSA: hda - Allow power_save_controller option
override DCAPS] changed the behavior of power_save_controller so that
it can override the driver capability.  This assumed that this option
is rarely changed dynamically unlike power_save option.  Too naive.

It turned out that the user-space power-management tool tries to set
power_save_controller option to 1 together with power_save option
without knowing what's actually doing.  This enabled forcibly the
runtime PM of the controller,  which is known to be broken om many
chips thus disabled as default.

So, the only sane fix is to revert this commit again.  It was intended
to ease debugging/testing for runtime PM enablement, but obviously we
need another way for it.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=56171
Reported-and-tested-by: Nikita Tsukanov <keks9n@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
11 years agoALSA: hda - fix typo in proc output
David Henningsson [Thu, 4 Apr 2013 09:47:13 +0000 (11:47 +0200)]
ALSA: hda - fix typo in proc output

Rename "Digitial In" to "Digital In". This function is only used for
proc output, so should not cause any problems to change.

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
11 years agoGFS2: Fix unlock of fcntl locks during withdrawn state
Steven Whitehouse [Thu, 14 Mar 2013 15:49:59 +0000 (15:49 +0000)]
GFS2: Fix unlock of fcntl locks during withdrawn state

When withdraw occurs, we need to continue to allow unlocks of fcntl
locks to occur, however these will only be local, since the node has
withdrawn from the cluster. This prevents triggering a VFS level
bug trap due to locks remaining when a file is closed.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
11 years agoGFS2: return error if malloc failed in gfs2_rs_alloc()
Wei Yongjun [Mon, 11 Mar 2013 15:01:37 +0000 (23:01 +0800)]
GFS2: return error if malloc failed in gfs2_rs_alloc()

The error code in gfs2_rs_alloc() is set to ENOMEM when error
but never be used, instead, gfs2_rs_alloc() always return 0.
Fix to return 'error'.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
11 years agoGFS2: use memchr_inv
Akinobu Mita [Thu, 7 Mar 2013 14:42:52 +0000 (23:42 +0900)]
GFS2: use memchr_inv

Use memchr_inv to verify that the specified memory range is cleared.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: cluster-devel@redhat.com
Cc: Christine Caulfield <ccaulfie@redhat.com>
Cc: David Teigland <teigland@redhat.com>
11 years agoGFS2: use kmalloc for lvb bitmap
David Teigland [Tue, 5 Mar 2013 21:01:47 +0000 (16:01 -0500)]
GFS2: use kmalloc for lvb bitmap

The temp lvb bitmap was on the stack, which could
be an alignment problem for __set_bit_le.  Use
kmalloc for it instead.

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
11 years agoHID: magicmouse: fix race between input_register() and probe()
Benjamin Tissoires [Tue, 2 Apr 2013 09:11:52 +0000 (11:11 +0200)]
HID: magicmouse: fix race between input_register() and probe()

Since kernel 3.7, it appears that the input registration occured before
the end of magicmouse_setup_input(). This is shown by receiving a lot of
"EV_SYN SYN_REPORT 1" instead of normal "EV_SYN SYN_REPORT 0".
This value means that the output buffer is full, and the user space
is loosing events.

Using .input_configured guarantees that the race is not occuring, and that
the call of "input_set_events_per_packet(input, 60)" is taken into account
by input_register().

Fixes:
https://bugzilla.redhat.com/show_bug.cgi?id=908604

Cc: stable@vger.kernel.org
Reported-and-Tested-By: Clarke Wixon <cwixon@usa.net>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
11 years agoALSA: hda - Enabling Realtek ALC 671 codec
Rainer Koenig [Thu, 4 Apr 2013 06:40:38 +0000 (08:40 +0200)]
ALSA: hda - Enabling Realtek ALC 671 codec

* Added the device ID to the modalias list and assinged ALC662 patches
for it
* Added 4 port support for the device ID 0671 in alc662_parse_auto_config

Signed-off-by: Rainer Koenig <Rainer.Koenig@ts.fujitsu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
11 years agoMerge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Linus Torvalds [Wed, 3 Apr 2013 23:15:17 +0000 (16:15 -0700)]
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm

Pull ARM fixes from Russell King:
 "Another round of ARM fixes, which include:
   - Fixing a problem with LPAE mapping sections
   - Reporting of some hwcaps on Krait CPUs
   - Avoiding repetitive warnings in the breakpoint code
   - Fixing a build error noticed on Dove platforms with PJ4 CPUs
   - Fix masking of level 2 cache revision.
   - Fixing timer-based udelay()
   - A larger fix for an erratum causing people major grief with Cortex
     A15 CPUs"

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7690/1: mm: fix CONFIG_LPAE typos
  ARM: 7689/1: add unwind annotations to ftrace asm
  ARM: 7685/1: delay: use private ticks_per_jiffy field for timer-based delay ops
  ARM: 7684/1: errata: Workaround for Cortex-A15 erratum 798181 (TLBI/DSB operations)
  ARM: 7682/1: cache-l2x0: fix masking of RTL revision numbering and set_debug init
  ARM: iWMMXt: always enable iWMMXt support with PJ4 CPUs
  ARM: 7681/1: hw_breakpoint: use warn_once to avoid spam from reset_ctrl_regs()
  ARM: 7678/1: Work around faulty ISAR0 register in some Krait CPUs
  ARM: 7680/1: Detect support for SDIV/UDIV from ISAR0 register
  ARM: 7679/1: Clear IDIVT hwcap if CONFIG_ARM_THUMB=n
  ARM: 7677/1: LPAE: Fix mapping in alloc_init_section for unaligned addresses
  ARM: KVM: vgic: take distributor lock on sync_hwstate path
  ARM: KVM: vgic: force EOIed LRs to the empty state

11 years agoPCI/PM: Disable runtime PM of PCIe ports
Rafael J. Wysocki [Sat, 30 Mar 2013 22:38:02 +0000 (23:38 +0100)]
PCI/PM: Disable runtime PM of PCIe ports

The runtime PM of PCIe ports turns out to be quite fragile, as in
some cases things work while in some other cases they don't and we
don't seem to have a good way to determine whether or not they are
going to work in advance.

For this reason, avoid enabling runtime PM for PCIe ports by
keeping their runtime PM reference counters always above 0 for the
time being.

When a PCIe port is suspended, it can no longer report events like
hotplug, so hotplug below the port may not work, as in the bug
report below.

[bhelgaas: changelog, stable]
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=53811
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org # v3.6+
11 years agoPCI/ACPI: Always resume devices on ACPI wakeup notifications
Rafael J. Wysocki [Thu, 28 Mar 2013 11:07:29 +0000 (11:07 +0000)]
PCI/ACPI: Always resume devices on ACPI wakeup notifications

It turns out that the _Lxx control methods provided by some BIOSes
clear the PME Status bit of PCI devices they handle, which means that
pci_acpi_wake_dev() cannot really use that bit to check whether or
not the device has signalled wakeup.

One symptom of the problem is, for example, that when an affected PCI
USB controller is runtime-suspended, then plugging in a new USB device
into one of the controller's ports will not wake up the controller,
which should happen.

For this reason, make pci_acpi_wake_dev() always attempt to resume
the device it is called for regardless of the device's PME Status bit
value (that bit still has to be cleared if set at this point,
though).

Reported-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Matthew Garrett <mjg59@srcf.ucam.org>
CC: stable@vger.kernel.org # v3.7+