GitHub/exynos8895/android_kernel_samsung_universal8895.git
10 years agoMerge tag 'v3.15-rc5' into next
Dmitry Torokhov [Wed, 14 May 2014 23:49:19 +0000 (16:49 -0700)]
Merge tag 'v3.15-rc5' into next

Merge with Linux 3.15-rc5 to sync up Wacom and other changes.

10 years agoInput: pmic8xxx-pwrkey - set sane default for debounce time
Stephen Boyd [Wed, 14 May 2014 18:58:55 +0000 (11:58 -0700)]
Input: pmic8xxx-pwrkey - set sane default for debounce time

If the debounce time is 0 our usage of ilog2() later on in this driver will
cause undefined behavior. If CONFIG_OF=n this fact is evident to the
compiler, and it emits a call to ____ilog2_NaN() which doesn't exist. Fix
this by setting a sane default for debounce and failing to probe if
debounce is 0 in the DT.

Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: wacom - add support for 0x116 sensor on Win8 Panasonic CF-H2
Jason Gerecke [Wed, 14 May 2014 18:42:22 +0000 (11:42 -0700)]
Input: wacom - add support for 0x116 sensor on Win8 Panasonic CF-H2

The Win8 version of the Panasonic CF-H2 includes a new Wacom device.
The pen interface appears to use the same protocol as before, but the
touch interface has been tweaked to send Win8-compatible reports.

Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: sun4i-ts - add support for temperature sensor
Hans de Goede [Wed, 14 May 2014 18:22:09 +0000 (11:22 -0700)]
Input: sun4i-ts - add support for temperature sensor

The sun4i resisitive touchscreen controller also comes with a built-in
temperature sensor. This commit adds support for it.

This commit also introduces a new "ts-attached" device-tree property,
when this is not set, the input part of the driver won't register. This way
the internal temperature sensor can be used to measure the SoC temperature
independent of there actually being a touchscreen attached to the controller.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: add driver for Allwinner sunxi SoC's rtp controller
Hans de Goede [Wed, 14 May 2014 18:20:45 +0000 (11:20 -0700)]
Input: add driver for Allwinner sunxi SoC's rtp controller

Note the sun4i-ts controller is capable of detecting a second touch, but
when a second touch is present then the accuracy becomes so bad the
reported touch location is not useable.

The original android driver contains some complicated heuristics using the
aprox. distance between the 2 touches to see if the user is making a pinch
open / close movement, and then reports emulated multi-touch events around
the last touch coordinate (as the dual-touch coordinates are worthless).

These kinds of heuristics are just asking for trouble (and don't belong in
the kernel). So this driver offers straight forward, reliable single touch
functionality only.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: logips2pp - fix typo in Kconfig help
Daniele Forsi [Mon, 12 May 2014 17:58:19 +0000 (10:58 -0700)]
Input: logips2pp - fix typo in Kconfig help

s/Logictech/Logitech/

Signed-off-by: Daniele Forsi <dforsi@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: gpio_keys_polled - convert to devm-* API
Alexander Shiyan [Mon, 28 Apr 2014 17:48:49 +0000 (10:48 -0700)]
Input: gpio_keys_polled - convert to devm-* API

Replace existing resource handling in the driver with managed device
resources, this ensures more consistent error values and simplifies error
handling paths:

kzalloc -> devm_kzalloc
gpio_request_one -> devm_gpio_request_one
input_allocate_polled_device -> devm_input_allocate_polled_device

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: implement managed polled input devices
Dmitry Torokhov [Mon, 28 Apr 2014 17:49:51 +0000 (10:49 -0700)]
Input: implement managed polled input devices

Managed resources are becoming more and more popular in drivers. Let's
implement managed polled input devices, to complement managed regular input
devices.

Similarly to managed regular input devices only one new call
devm_input_allocate_polled_device() is added and the rest of APIs is
modified to work with both managed and non-managed devices.

Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Tested-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: remove race when instantiating polled device attributes
Dmitry Torokhov [Mon, 28 Apr 2014 20:16:00 +0000 (13:16 -0700)]
Input: remove race when instantiating polled device attributes

Polled device's attributes controlling polling rate and whether polling is
enabled are attached to input device. We should have device core
instantiate them for us, so that they are created by the time new device
notification is sent to userspace, instead of doing it ourselves
afterwards.

Tested-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: gpio_keys - more conversions to devm-* API
Alexander Shiyan [Mon, 28 Apr 2014 16:52:36 +0000 (09:52 -0700)]
Input: gpio_keys - more conversions to devm-* API

Replace existing gpio resource handling in the driver with managed
resources, this ensures more consistent error values and simplifies error
paths.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: zforce - make of_device_id array const
Jingoo Han [Wed, 7 May 2014 20:10:16 +0000 (13:10 -0700)]
Input: zforce - make of_device_id array const

Make of_device_id array const, because all OF functions handle it as const.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: mms114 - make of_device_id array const
Jingoo Han [Wed, 7 May 2014 20:09:52 +0000 (13:09 -0700)]
Input: mms114 - make of_device_id array const

Make of_device_id array const, because all OF functions handle it as const.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: lpc32xx_ts - make of_device_id array const
Jingoo Han [Wed, 7 May 2014 20:09:17 +0000 (13:09 -0700)]
Input: lpc32xx_ts - make of_device_id array const

Make of_device_id array const, because all OF functions handle it as const.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: egalax_ts - make of_device_id array const
Jingoo Han [Wed, 7 May 2014 20:08:53 +0000 (13:08 -0700)]
Input: egalax_ts - make of_device_id array const

Make of_device_id array const, because all OF functions handle it as const.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: auo-pixcir-ts - make of_device_id array const
Jingoo Han [Wed, 7 May 2014 20:05:15 +0000 (13:05 -0700)]
Input: auo-pixcir-ts - make of_device_id array const

Make of_device_id array const, because all OF functions handle it as const.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: apbps2 - make of_device_id array const
Jingoo Han [Wed, 7 May 2014 20:04:50 +0000 (13:04 -0700)]
Input: apbps2 - make of_device_id array const

Make of_device_id array const, because all OF functions handle it as const.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: olpc_apsp - make of_device_id array const
Jingoo Han [Wed, 7 May 2014 20:03:20 +0000 (13:03 -0700)]
Input: olpc_apsp - make of_device_id array const

Make of_device_id array const, because all OF functions handle it as const.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: rotary_encoder - make of_device_id array const
Jingoo Han [Wed, 7 May 2014 20:03:00 +0000 (13:03 -0700)]
Input: rotary_encoder - make of_device_id array const

Make of_device_id array const, because all OF functions handle it as const.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: gpio-beeper - make of_device_id array const
Jingoo Han [Wed, 7 May 2014 20:02:39 +0000 (13:02 -0700)]
Input: gpio-beeper - make of_device_id array const

Make of_device_id array const, because all OF functions handle it as const.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: imx_keypad - make of_device_id array const
Jingoo Han [Wed, 7 May 2014 19:59:47 +0000 (12:59 -0700)]
Input: imx_keypad - make of_device_id array const

Make of_device_id array const, because all OF functions handle it as const.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: gpio_keys_polled - make of_device_id array const
Jingoo Han [Wed, 7 May 2014 19:58:36 +0000 (12:58 -0700)]
Input: gpio_keys_polled - make of_device_id array const

Make of_device_id array const, because all OF functions handle it as const.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: gpio_keys - make of_device_id array const
Jingoo Han [Wed, 7 May 2014 19:58:06 +0000 (12:58 -0700)]
Input: gpio_keys - make of_device_id array const

Make of_device_id array const, because all OF functions handle it as const.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: clps711x-keypad - make of_device_id array const
Jingoo Han [Wed, 7 May 2014 19:57:31 +0000 (12:57 -0700)]
Input: clps711x-keypad - make of_device_id array const

Make of_device_id array const, because all OF functions handle it as const.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: gpio-beeper - simplify GPIO handling
Alexander Shiyan [Sat, 26 Apr 2014 06:45:05 +0000 (23:45 -0700)]
Input: gpio-beeper - simplify GPIO handling

This patch simplifies GPIO handling in the driver by using GPIO functions
based on descriptors. As a result this driver now can be used for boards
without DT support.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: tsc2005 - convert driver to use devm_*
Sebastian Reichel [Sat, 26 Apr 2014 04:50:21 +0000 (21:50 -0700)]
Input: tsc2005 - convert driver to use devm_*

Simplify the driver by using managed resources for memory allocation of
internal structure, input device allocation and irq request.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: tsc2005 - use dev_err for error messages
Sebastian Reichel [Sat, 26 Apr 2014 04:50:13 +0000 (21:50 -0700)]
Input: tsc2005 - use dev_err for error messages

Change some dev_dbg() invocations to dev_err() ones, because they
are supposed to output error messages.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: gpio_keys - convert struct descriptions to kernel-doc
Andy Shevchenko [Fri, 25 Apr 2014 22:08:29 +0000 (15:08 -0700)]
Input: gpio_keys - convert struct descriptions to kernel-doc

This patch converts descriptions of the structures defined in
linux/gpio_keys.h to follow kernel-doc format.

There is no functional change.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: gpio_keys - convert to use devm_*
Andy Shevchenko [Fri, 25 Apr 2014 21:21:59 +0000 (14:21 -0700)]
Input: gpio_keys - convert to use devm_*

This makes the error handling much more simpler than open-coding everything
and in addition makes the probe function smaller an tidier.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: twl6040-vibra - use devm functions
Fabio Estevam [Fri, 25 Apr 2014 16:21:12 +0000 (09:21 -0700)]
Input: twl6040-vibra - use devm functions

Using devm_regulator_bulk_get() and devm_input_allocate_device() can make
the code cleaner and smaller as we do not need to manually free resources
the error and remove paths.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: ads7877 - remove bitrotted comment
Mark Brown [Fri, 25 Apr 2014 06:37:56 +0000 (23:37 -0700)]
Input: ads7877 - remove bitrotted comment

While searching for users of spi_async() I found a reference in the ad7877
driver to using it to initiate data transfer from the interrupt handler.
However there is no code for this, instead the interrupt handler is a
threaded handler and uses spi_sync() instead.

Remove the bitrotted comment, though in actual fact the use case mentioned
is a great use for spi_async() since it would cut down on latency handling
the interrupt by saving us a context switch before we start SPI.

This was previously implemented, it was removed in commit b534422b2d11
(Input: ad7877 - switch to using threaded IRQ) for code complexity reasons.
It may be better to revert that commit instead.

Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: evdev - get rid of old workaround for EVIOCGBIT
Dmitry Torokhov [Wed, 23 Apr 2014 16:56:33 +0000 (09:56 -0700)]
Input: evdev - get rid of old workaround for EVIOCGBIT

We put this workaround in 2008 and the offending userspace has been fixed
up long time ago; the link in the message is no longer valid either, so it
is time to retire it.

Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: add st-keyscan driver
Gabriel FERNANDEZ [Sat, 12 Apr 2014 20:45:50 +0000 (13:45 -0700)]
Input: add st-keyscan driver

This patch adds ST Keyscan driver to use the keypad hw a subset of ST
boards provide. Specific board setup will be put in the given dt.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@linaro.org>
Signed-off-by: Giuseppe Condorelli <giuseppe.condorelli@st.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: ads7846 - correct log message for spi_sync() errors
Mark Brown [Wed, 23 Apr 2014 00:37:43 +0000 (17:37 -0700)]
Input: ads7846 - correct log message for spi_sync() errors

While searching for users of spi_async() I got a false positive in the
ads7846 driver, fix that.

Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: tc3589x-keypad - support probing from device tree
Linus Walleij [Sun, 20 Apr 2014 19:34:34 +0000 (12:34 -0700)]
Input: tc3589x-keypad - support probing from device tree

Implement device tree probing for the tc3589x keypad driver.
This is modeled on the STMPE keypad driver and tested on the
Ux500 TVK1281618 UIB.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoInput: w90p910_ts - depend on ARCH_W90X900
Jean Delvare [Sun, 20 Apr 2014 05:37:58 +0000 (22:37 -0700)]
Input: w90p910_ts - depend on ARCH_W90X900

The w90p910_ts touchscreen driver is heavily architecture dependent,
so there is no point in letting it be built on other architectures
than it was written for.

All other W90P910/W90X900 drivers already have that dependency, so it
makes things more consistent and configuration easier.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Acked-by Wan Zongshun <mcuos.com@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
10 years agoLinux 3.15-rc5
Linus Torvalds [Fri, 9 May 2014 20:10:52 +0000 (13:10 -0700)]
Linux 3.15-rc5

10 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 9 May 2014 19:24:20 +0000 (12:24 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Peter Anvin:
 "A somewhat unpleasantly large collection of small fixes.  The big ones
  are the __visible tree sweep and a fix for 'earlyprintk=efi,keep'.  It
  was using __init functions with predictably suboptimal results.

  Another key fix is a build fix which would produce output that simply
  would not decompress correctly in some configuration, due to the
  existing Makefiles picking up an unfortunate local label and mistaking
  it for the global symbol _end.

  Additional fixes include the handling of 64-bit numbers when setting
  the vdso data page (a latent bug which became manifest when i386
  started exporting a vdso with time functions), a fix to the new MSR
  manipulation accessors which would cause features to not get properly
  unblocked, a build fix for 32-bit userland, and a few new platform
  quirks"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, vdso, time: Cast tv_nsec to u64 for proper shifting in update_vsyscall()
  x86: Fix typo in MSR_IA32_MISC_ENABLE_LIMIT_CPUID macro
  x86: Fix typo preventing msr_set/clear_bit from having an effect
  x86/intel: Add quirk to disable HPET for the Baytrail platform
  x86/hpet: Make boot_hpet_disable extern
  x86-64, build: Fix stack protector Makefile breakage with 32-bit userland
  x86/reboot: Add reboot quirk for Certec BPC600
  asmlinkage: Add explicit __visible to drivers/*, lib/*, kernel/*
  asmlinkage, x86: Add explicit __visible to arch/x86/*
  asmlinkage: Revert "lto: Make asmlinkage __visible"
  x86, build: Don't get confused by local symbols
  x86/efi: earlyprintk=efi,keep fix

10 years agox86, vdso, time: Cast tv_nsec to u64 for proper shifting in update_vsyscall()
Boris Ostrovsky [Fri, 9 May 2014 15:11:27 +0000 (11:11 -0400)]
x86, vdso, time: Cast tv_nsec to u64 for proper shifting in update_vsyscall()

With tk->wall_to_monotonic.tv_nsec being a 32-bit value on 32-bit
systems, (tk->wall_to_monotonic.tv_nsec << tk->shift) in update_vsyscall()
may lose upper bits or, worse, add them since compiler will do this:
(u64)(tk->wall_to_monotonic.tv_nsec << tk->shift)
instead of
((u64)tk->wall_to_monotonic.tv_nsec << tk->shift)

So if, for example, tv_nsec is 0x800000 and shift is 8 we will end up
with 0xffffffff80000000 instead of 0x80000000. And then we are stuck in
the subsequent 'while' loop.

We need an explicit cast.

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: http://lkml.kernel.org/r/1399648287-15178-1-git-send-email-boris.ostrovsky@oracle.com
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: <stable@vger.kernel.org> # v3.14
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
10 years agox86: Fix typo in MSR_IA32_MISC_ENABLE_LIMIT_CPUID macro
Andres Freund [Fri, 9 May 2014 01:29:17 +0000 (03:29 +0200)]
x86: Fix typo in MSR_IA32_MISC_ENABLE_LIMIT_CPUID macro

The spuriously added semicolon didn't have any effect because the
macro isn't currently in use.

c0a639ad0bc6b178b46996bd1f821a04643e2bde

Signed-off-by: Andres Freund <andres@anarazel.de>
Link: http://lkml.kernel.org/r/1399598957-7011-3-git-send-email-andres@anarazel.de
Cc: Borislav Petkov <bp@suse.de>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
10 years agox86: Fix typo preventing msr_set/clear_bit from having an effect
Andres Freund [Fri, 9 May 2014 01:29:16 +0000 (03:29 +0200)]
x86: Fix typo preventing msr_set/clear_bit from having an effect

Due to a typo the msr accessor function introduced in
22085a66c2fab6cf9b9393c056a3600a6b4735de didn't have any lasting
effects because they accidentally wrote the old value back.

After c0a639ad0bc6b178b46996bd1f821a04643e2bde this at the very least
this causes cpuid limits not to be lifted on some cpus leading to
missing capabilities for those.

Signed-off-by: Andres Freund <andres@anarazel.de>
Link: http://lkml.kernel.org/r/1399598957-7011-2-git-send-email-andres@anarazel.de
Cc: Borislav Petkov <bp@suse.de>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
10 years agoMerge tag 'xfs-for-linus-3.15-rc5' of git://oss.sgi.com/xfs/xfs
Linus Torvalds [Fri, 9 May 2014 02:20:45 +0000 (19:20 -0700)]
Merge tag 'xfs-for-linus-3.15-rc5' of git://oss.sgi.com/xfs/xfs

Pull xfs fixes from Dave Chinner:
 "The main fix is adding support for default ACLs on O_TMPFILE opened
  inodes to bring XFS into line with other filesystems.  Metadata CRCs
  are now also considered well enough tested to be fully supported, so
  we're removing the shouty warnings issued at mount time for
  filesystems with that format.  And there's transaction block
  reservation overrun fix.

  Summary:
   - fix a remote attribute size calculation bug that leads to a
     transaction overrun
   - add default ACLs to O_TMPFILE files
   - Remove the EXPERIMENTAL tag from filesystems with metadata CRC
     support"

* tag 'xfs-for-linus-3.15-rc5' of git://oss.sgi.com/xfs/xfs:
  xfs: remote attribute overwrite causes transaction overrun
  xfs: initialize default acls for ->tmpfile()
  xfs: fully support v5 format filesystems

10 years agoMerge tag 'trace-fixes-v3.15-rc4-v2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 8 May 2014 21:17:13 +0000 (14:17 -0700)]
Merge tag 'trace-fixes-v3.15-rc4-v2' of git://git./linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "This contains two fixes.

  The first is a long standing bug that causes bogus data to show up in
  the refcnt field of the module_refcnt tracepoint.  It was introduced
  by a merge conflict resolution back in 2.6.35-rc days.

  The result should be 'refcnt = incs - decs', but instead it did
  'refcnt = incs + decs'.

  The second fix is to a bug that was introduced in this merge window
  that allowed for a tracepoint funcs pointer to be used after it was
  freed.  Moving the location of where the probes are released solved
  the problem"

* tag 'trace-fixes-v3.15-rc4-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracepoint: Fix use of tracepoint funcs after rcu free
  trace: module: Maintain a valid user count

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Thu, 8 May 2014 21:06:45 +0000 (14:06 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

Pull input subsystem fixes from Dmitry Torokhov:
 "Just a few fixups to various drivers"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: elantech - fix touchpad initialization on Gigabyte U2442
  Input: tca8418 - fix loading this driver as a module from a device tree
  Input: bma150 - extend chip detection for bma180
  Input: atkbd - fix keyboard not working on some LG laptops
  Input: synaptics - add min/max quirk for ThinkPad Edge E431

10 years agoMerge tag 'sound-3.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Thu, 8 May 2014 20:51:53 +0000 (13:51 -0700)]
Merge tag 'sound-3.15-rc5' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A bunch of small fixes for USB-audio and HD-audio, where most of them
  are for regressions: USB-audio PM fixes, ratelimit annoyance fix, HDMI
  offline state fix, and a couple of device-specific quirks"

* tag 'sound-3.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - hdmi: Set converter channel count even without sink
  ALSA: usb-audio: work around corrupted TEAC UD-H01 feedback data
  ALSA: usb-audio: Fix deadlocks at resuming
  ALSA: usb-audio: Save mixer status only once at suspend
  ALSA: usb-audio: Prevent printk ratelimiting from spamming kernel log while DEBUG not defined
  ALSA: hda - add headset mic detect quirk for a Dell laptop

10 years agoMerge tag 'mfd-mmc-fixes-3.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Thu, 8 May 2014 19:41:14 +0000 (12:41 -0700)]
Merge tag 'mfd-mmc-fixes-3.15-rc4' of git://git./linux/kernel/git/lee/mfd

Pull mmc/rtsx revert from Lee Jones.

* tag 'mfd-mmc-fixes-3.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
  mmc: rtsx: Revert "mmc: rtsx: add support for pre_req and post_req"

10 years agotracepoint: Fix use of tracepoint funcs after rcu free
Mathieu Desnoyers [Thu, 8 May 2014 11:47:49 +0000 (07:47 -0400)]
tracepoint: Fix use of tracepoint funcs after rcu free

Commit de7b2973903c "tracepoint: Use struct pointer instead of name hash
for reg/unreg tracepoints" introduces a use after free by calling
release_probes on the old struct tracepoint array before the newly
allocated array is published with rcu_assign_pointer. There is a race
window where tracepoints (RCU readers) can perform a
"use-after-grace-period-after-free", which shows up as a GPF in
stress-tests.

Link: http://lkml.kernel.org/r/53698021.5020108@oracle.com
Link: http://lkml.kernel.org/p/1399549669-25465-1-git-send-email-mathieu.desnoyers@efficios.com
Reported-by: Sasha Levin <sasha.levin@oracle.com>
CC: Oleg Nesterov <oleg@redhat.com>
CC: Dave Jones <davej@redhat.com>
Fixes: de7b2973903c "tracepoint: Use struct pointer instead of name hash for reg/unreg tracepoints"
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
10 years agotrace: module: Maintain a valid user count
Romain Izard [Tue, 4 Mar 2014 09:09:39 +0000 (10:09 +0100)]
trace: module: Maintain a valid user count

The replacement of the 'count' variable by two variables 'incs' and
'decs' to resolve some race conditions during module unloading was done
in parallel with some cleanup in the trace subsystem, and was integrated
as a merge.

Unfortunately, the formula for this replacement was wrong in the tracing
code, and the refcount in the traces was not usable as a result.

Use 'count = incs - decs' to compute the user count.

Link: http://lkml.kernel.org/p/1393924179-9147-1-git-send-email-romain.izard.pro@gmail.com
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: stable@vger.kernel.org # 2.6.35
Fixes: c1ab9cab7509 "merge conflict resolution"
Signed-off-by: Romain Izard <romain.izard.pro@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
10 years agommc: rtsx: Revert "mmc: rtsx: add support for pre_req and post_req"
Micky Ching [Tue, 29 Apr 2014 01:54:54 +0000 (09:54 +0800)]
mmc: rtsx: Revert "mmc: rtsx: add support for pre_req and post_req"

This reverts commit c42deffd5b53c9e583d83c7964854ede2f12410d.

commit <mmc: rtsx: add support for pre_req and post_req> did use
mutex_unlock() in tasklet, but mutex_unlock() can't be used in
tasklet(atomic context). The driver needs to use mutex to avoid
concurrency, so we can't use tasklet here, the patch need to be
removed.

The spinlock host->lock and pcr->lock may deadlock, one way to solve
the deadlock is remove host->lock in sd_isr_done_transfer(), but if
using workqueue the we can avoid using the spinlock and also avoid
the problem.

Signed-off-by: Micky Ching <micky_ching@realsil.com.cn>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
10 years agox86/intel: Add quirk to disable HPET for the Baytrail platform
Feng Tang [Thu, 24 Apr 2014 08:18:18 +0000 (16:18 +0800)]
x86/intel: Add quirk to disable HPET for the Baytrail platform

HPET on current Baytrail platform has accuracy problem to be
used as reliable clocksource/clockevent, so add a early quirk to
disable it.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Cc: Clemens Ladisch <clemens@ladisch.de>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1398327498-13163-2-git-send-email-feng.tang@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
10 years agox86/hpet: Make boot_hpet_disable extern
Feng Tang [Thu, 24 Apr 2014 08:18:17 +0000 (16:18 +0800)]
x86/hpet: Make boot_hpet_disable extern

HPET on some platform has accuracy problem. Making
"boot_hpet_disable" extern so that we can runtime disable
the HPET timer by using quirk to check the platform.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Cc: Clemens Ladisch <clemens@ladisch.de>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1398327498-13163-1-git-send-email-feng.tang@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
10 years agoMerge tag 'for-linus-20140507' of git://git.infradead.org/linux-mtd
Linus Torvalds [Wed, 7 May 2014 23:28:52 +0000 (16:28 -0700)]
Merge tag 'for-linus-20140507' of git://git.infradead.org/linux-mtd

Pull MTD fix from Brian Norris:
 "A single update for Keystone SoC's, whose NAND controller does not
  support subpage programming"

* tag 'for-linus-20140507' of git://git.infradead.org/linux-mtd:
  mtd: davinci-nand: disable subpage write for keystone-nand

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Linus Torvalds [Wed, 7 May 2014 23:07:58 +0000 (16:07 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/hid

Pull HID fixes from Jiri Kosina:

 - fix a small bug in computation of report size, which might cause some
   devices (Atmel touchpad found on the Samsung Ativ 9) to reject
   reports with otherwise valid contents

 - a few device-ID specific quirks/additions piggy-backing on top of it

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: sensor-hub: Add in quirk for sensor hub in Lenovo Ideapad Yogas
  HID: add NO_INIT_REPORTS quirk for Synaptics Touch Pad V 103S
  HID: core: fix computation of the report size
  HID: multitouch: add support of EliteGroup 05D8 panels

10 years agoMerge branch 'drm-radeon-mullins' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Wed, 7 May 2014 22:47:47 +0000 (15:47 -0700)]
Merge branch 'drm-radeon-mullins' of git://people.freedesktop.org/~airlied/linux

Pull radeon mullins support from Dave Airlie:
 "This is support for the new AMD mullins APU, it pretty much just adds
  support to the driver in the all the right places, and is pretty low
  risk wrt other GPUs"

Oh well.  I guess it ends up fitting under "support new hardware" for
merging late.

* 'drm-radeon-mullins' of git://people.freedesktop.org/~airlied/linux:
  drm/radeon: add pci ids for Mullins
  drm/radeon: add Mullins VCE support
  drm/radeon: modesetting updates for Mullins.
  drm/radeon: dpm updates for KV/KB
  drm/radeon: add Mullins dpm support.
  drm/radeon: add Mullins UVD support.
  drm/radeon: update cik init for Mullins.
  drm/radeon: add Mullins chip family

10 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Wed, 7 May 2014 22:45:13 +0000 (15:45 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "radeon, i915 and nouveau fixes, all fixes for regressions or black
  screens, or possible oopses"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/radeon: lower the ref * post PLL maximum
  drm/radeon: check that we have a clock before PLL setup
  drm/radeon: drm/radeon: add missing radeon_semaphore_free to error path
  drm/radeon: Fix num_banks calculation for SI
  agp: info leak in agpioc_info_wrap()
  drm/gm107/gr: bump attrib cb size quite a bit
  drm/nouveau: fix another lock unbalance in nouveau_crtc_page_flip
  drm/nouveau/bios: fix shadowing from PROM on big-endian systems
  drm/nouveau/acpi: allow non-optimus setups to load vbios from acpi
  drm/radeon/dp: check for errors in dpcd reads
  drm/radeon: avoid high jitter with small frac divs
  drm/radeon: check buffer relocation offset
  drm/radeon: use pflip irq on R600+ v2
  drm/radeon/uvd: use lower clocks on old UVD to boot v2
  drm/i915: don't try DP_LINK_BW_5_4 on HSW ULX
  drm/i915: Sanitize the enable_ppgtt module option once
  drm/i915: Break encoder->crtc link separately in intel_sanitize_crtc()

10 years agox86-64, build: Fix stack protector Makefile breakage with 32-bit userland
George Spelvin [Wed, 7 May 2014 21:05:52 +0000 (17:05 -0400)]
x86-64, build: Fix stack protector Makefile breakage with 32-bit userland

If you are using a 64-bit kernel with 32-bit userland, then
scripts/gcc-x86_64-has-stack-protector.sh invokes 32-bit gcc
with -mcmodel=kernel, which produces:

<stdin>:1:0: error: code model 'kernel' not supported in the 32 bit mode

and trips the "broken compiler" test at arch/x86/Makefile:120.

There are several places a fix is possible, but the following seems
cleanest.  (But it's minimal; it would also be possible to factor
out a bunch of stuff from the two branches of the if.)

Signed-off-by: George Spelvin <linux@horizon.com>
Link: http://lkml.kernel.org/r/20140507210552.7581.qmail@ns.horizon.com
Cc: <stable@vger.kernel.org> # v3.14
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
10 years agox86/reboot: Add reboot quirk for Certec BPC600
Christian Gmeiner [Wed, 7 May 2014 07:01:54 +0000 (09:01 +0200)]
x86/reboot: Add reboot quirk for Certec BPC600

Certec BPC600 needs reboot=pci to actually reboot.

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Li Aubrey <aubrey.li@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Dave Jones <davej@redhat.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1399446114-2147-1-git-send-email-christian.gmeiner@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
10 years agoMerge branch 'mullins' of git://people.freedesktop.org/~deathsimple/linux into drm...
Dave Airlie [Tue, 6 May 2014 23:10:28 +0000 (09:10 +1000)]
Merge branch 'mullins' of git://people.freedesktop.org/~deathsimple/linux into drm-fixes

Add Mullins chips support.

* 'mullins' of git://people.freedesktop.org/~deathsimple/linux:
  drm/radeon: add pci ids for Mullins
  drm/radeon: add Mullins VCE support
  drm/radeon: modesetting updates for Mullins.
  drm/radeon: dpm updates for KV/KB
  drm/radeon: add Mullins dpm support.
  drm/radeon: add Mullins UVD support.
  drm/radeon: update cik init for Mullins.
  drm/radeon: add Mullins chip family

10 years agoMerge branch 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux...
Dave Airlie [Tue, 6 May 2014 23:06:21 +0000 (09:06 +1000)]
Merge branch 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-fixes

nouveau fixes.

* 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
  drm/gm107/gr: bump attrib cb size quite a bit
  drm/nouveau: fix another lock unbalance in nouveau_crtc_page_flip
  drm/nouveau/bios: fix shadowing from PROM on big-endian systems
  drm/nouveau/acpi: allow non-optimus setups to load vbios from acpi

10 years agoMerge tag 'topc/core-stuff-2014-05-05' of git://anongit.freedesktop.org/drm-intel...
Dave Airlie [Tue, 6 May 2014 22:56:03 +0000 (08:56 +1000)]
Merge tag 'topc/core-stuff-2014-05-05' of git://anongit.freedesktop.org/drm-intel into drm-fixes

Some more i915 fixes. There's still some DP issues we are looking into,
but wanted to get these moving.

* tag 'topc/core-stuff-2014-05-05' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: don't try DP_LINK_BW_5_4 on HSW ULX
  drm/i915: Sanitize the enable_ppgtt module option once
  drm/i915: Break encoder->crtc link separately in intel_sanitize_crtc()

10 years agoMerge branch 'drm-fixes-3.15' of git://people.freedesktop.org/~deathsimple/linux...
Dave Airlie [Tue, 6 May 2014 22:55:27 +0000 (08:55 +1000)]
Merge branch 'drm-fixes-3.15' of git://people.freedesktop.org/~deathsimple/linux into drm-fixes

this is the next pull quested for stashed up radeon fixes for 3.15. As discussed support for Mullins was separated out and will get it's own pull request. Remaining highlights are:
1. Some more patches to better handle PLL limits.
2. Making use of the PFLIP additional to the VBLANK interrupt, otherwise we sometimes miss page flip events.
3. Fix for the UVD command stream parser.
4. Fix for bootup UVD clocks on RV7xx systems.
5. Adding missing error check on dpcd reads.
6. Fixes number of banks calculation on SI.

* 'drm-fixes-3.15' of git://people.freedesktop.org/~deathsimple/linux:
  drm/radeon: lower the ref * post PLL maximum
  drm/radeon: check that we have a clock before PLL setup
  drm/radeon: drm/radeon: add missing radeon_semaphore_free to error path
  drm/radeon: Fix num_banks calculation for SI
  drm/radeon/dp: check for errors in dpcd reads
  drm/radeon: avoid high jitter with small frac divs
  drm/radeon: check buffer relocation offset
  drm/radeon: use pflip irq on R600+ v2
  drm/radeon/uvd: use lower clocks on old UVD to boot v2

10 years agoMerge branch 'akpm' (incoming from Andrew)
Linus Torvalds [Tue, 6 May 2014 20:07:41 +0000 (13:07 -0700)]
Merge branch 'akpm' (incoming from Andrew)

Merge misc fixes from Andrew Morton:
 "13 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  agp: info leak in agpioc_info_wrap()
  fs/affs/super.c: bugfix / double free
  fanotify: fix -EOVERFLOW with large files on 64-bit
  slub: use sysfs'es release mechanism for kmem_cache
  revert "mm: vmscan: do not swap anon pages just because free+file is low"
  autofs: fix lockref lookup
  mm: filemap: update find_get_pages_tag() to deal with shadow entries
  mm/compaction: make isolate_freepages start at pageblock boundary
  MAINTAINERS: zswap/zbud: change maintainer email address
  mm/page-writeback.c: fix divide by zero in pos_ratio_polynom
  hugetlb: ensure hugepage access is denied if hugepages are not supported
  slub: fix memcg_propagate_slab_attrs
  drivers/rtc/rtc-pcf8523.c: fix month definition

10 years agoagp: info leak in agpioc_info_wrap()
Dan Carpenter [Tue, 6 May 2014 19:50:12 +0000 (12:50 -0700)]
agp: info leak in agpioc_info_wrap()

On 64 bit systems the agp_info struct has a 4 byte hole between
->agp_mode and ->aper_base.  We need to clear it to avoid disclosing
stack information to userspace.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agofs/affs/super.c: bugfix / double free
Fabian Frederick [Tue, 6 May 2014 19:50:11 +0000 (12:50 -0700)]
fs/affs/super.c: bugfix / double free

Commit 842a859db26b ("affs: use ->kill_sb() to simplify ->put_super()
and failure exits of ->mount()") adds .kill_sb which frees sbi but
doesn't remove sbi free in case of parse_options error causing double
free+random crash.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: <stable@vger.kernel.org> [3.14.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agofanotify: fix -EOVERFLOW with large files on 64-bit
Will Woods [Tue, 6 May 2014 19:50:10 +0000 (12:50 -0700)]
fanotify: fix -EOVERFLOW with large files on 64-bit

On 64-bit systems, O_LARGEFILE is automatically added to flags inside
the open() syscall (also openat(), blkdev_open(), etc).  Userspace
therefore defines O_LARGEFILE to be 0 - you can use it, but it's a
no-op.  Everything should be O_LARGEFILE by default.

But: when fanotify does create_fd() it uses dentry_open(), which skips
all that.  And userspace can't set O_LARGEFILE in fanotify_init()
because it's defined to 0.  So if fanotify gets an event regarding a
large file, the read() will just fail with -EOVERFLOW.

This patch adds O_LARGEFILE to fanotify_init()'s event_f_flags on 64-bit
systems, using the same test as open()/openat()/etc.

Addresses https://bugzilla.redhat.com/show_bug.cgi?id=696821

Signed-off-by: Will Woods <wwoods@redhat.com>
Acked-by: Eric Paris <eparis@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoslub: use sysfs'es release mechanism for kmem_cache
Christoph Lameter [Tue, 6 May 2014 19:50:08 +0000 (12:50 -0700)]
slub: use sysfs'es release mechanism for kmem_cache

debugobjects warning during netfilter exit:

    ------------[ cut here ]------------
    WARNING: CPU: 6 PID: 4178 at lib/debugobjects.c:260 debug_print_object+0x8d/0xb0()
    ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x20
    Modules linked in:
    CPU: 6 PID: 4178 Comm: kworker/u16:2 Tainted: G        W 3.11.0-next-20130906-sasha #3984
    Workqueue: netns cleanup_net
    Call Trace:
      dump_stack+0x52/0x87
      warn_slowpath_common+0x8c/0xc0
      warn_slowpath_fmt+0x46/0x50
      debug_print_object+0x8d/0xb0
      __debug_check_no_obj_freed+0xa5/0x220
      debug_check_no_obj_freed+0x15/0x20
      kmem_cache_free+0x197/0x340
      kmem_cache_destroy+0x86/0xe0
      nf_conntrack_cleanup_net_list+0x131/0x170
      nf_conntrack_pernet_exit+0x5d/0x70
      ops_exit_list+0x5e/0x70
      cleanup_net+0xfb/0x1c0
      process_one_work+0x338/0x550
      worker_thread+0x215/0x350
      kthread+0xe7/0xf0
      ret_from_fork+0x7c/0xb0

Also during dcookie cleanup:

    WARNING: CPU: 12 PID: 9725 at lib/debugobjects.c:260 debug_print_object+0x8c/0xb0()
    ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x20
    Modules linked in:
    CPU: 12 PID: 9725 Comm: trinity-c141 Not tainted 3.15.0-rc2-next-20140423-sasha-00018-gc4ff6c4 #408
    Call Trace:
      dump_stack (lib/dump_stack.c:52)
      warn_slowpath_common (kernel/panic.c:430)
      warn_slowpath_fmt (kernel/panic.c:445)
      debug_print_object (lib/debugobjects.c:262)
      __debug_check_no_obj_freed (lib/debugobjects.c:697)
      debug_check_no_obj_freed (lib/debugobjects.c:726)
      kmem_cache_free (mm/slub.c:2689 mm/slub.c:2717)
      kmem_cache_destroy (mm/slab_common.c:363)
      dcookie_unregister (fs/dcookies.c:302 fs/dcookies.c:343)
      event_buffer_release (arch/x86/oprofile/../../../drivers/oprofile/event_buffer.c:153)
      __fput (fs/file_table.c:217)
      ____fput (fs/file_table.c:253)
      task_work_run (kernel/task_work.c:125 (discriminator 1))
      do_notify_resume (include/linux/tracehook.h:196 arch/x86/kernel/signal.c:751)
      int_signal (arch/x86/kernel/entry_64.S:807)

Sysfs has a release mechanism.  Use that to release the kmem_cache
structure if CONFIG_SYSFS is enabled.

Only slub is changed - slab currently only supports /proc/slabinfo and
not /sys/kernel/slab/*.  We talked about adding that and someone was
working on it.

[akpm@linux-foundation.org: fix CONFIG_SYSFS=n build]
[akpm@linux-foundation.org: fix CONFIG_SYSFS=n build even more]
Signed-off-by: Christoph Lameter <cl@linux.com>
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Tested-by: Sasha Levin <sasha.levin@oracle.com>
Acked-by: Greg KH <greg@kroah.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Bart Van Assche <bvanassche@acm.org>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agorevert "mm: vmscan: do not swap anon pages just because free+file is low"
Johannes Weiner [Tue, 6 May 2014 19:50:07 +0000 (12:50 -0700)]
revert "mm: vmscan: do not swap anon pages just because free+file is low"

This reverts commit 0bf1457f0cfc ("mm: vmscan: do not swap anon pages
just because free+file is low") because it introduced a regression in
mostly-anonymous workloads, where reclaim would become ineffective and
trap every allocating task in direct reclaim.

The problem is that there is a runaway feedback loop in the scan balance
between file and anon, where the balance tips heavily towards a tiny
thrashing file LRU and anonymous pages are no longer being looked at.
The commit in question removed the safe guard that would detect such
situations and respond with forced anonymous reclaim.

This commit was part of a series to fix premature swapping in loads with
relatively little cache, and while it made a small difference, the cure
is obviously worse than the disease.  Revert it.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reported-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Rafael Aquini <aquini@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: <stable@kernel.org> [3.12+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoautofs: fix lockref lookup
Ian Kent [Tue, 6 May 2014 19:50:06 +0000 (12:50 -0700)]
autofs: fix lockref lookup

autofs needs to be able to see private data dentry flags for its dentrys
that are being created but not yet hashed and for its dentrys that have
been rmdir()ed but not yet freed.  It needs to do this so it can block
processes in these states until a status has been returned to indicate
the given operation is complete.

It does this by keeping two lists, active and expring, of dentrys in
this state and uses ->d_release() to keep them stable while it checks
the reference count to determine if they should be used.

But with the recent lockref changes dentrys being freed sometimes don't
transition to a reference count of 0 before being freed so autofs can
occassionally use a dentry that is invalid which can lead to a panic.

Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agomm: filemap: update find_get_pages_tag() to deal with shadow entries
Johannes Weiner [Tue, 6 May 2014 19:50:05 +0000 (12:50 -0700)]
mm: filemap: update find_get_pages_tag() to deal with shadow entries

Dave Jones reports the following crash when find_get_pages_tag() runs
into an exceptional entry:

  kernel BUG at mm/filemap.c:1347!
  RIP: find_get_pages_tag+0x1cb/0x220
  Call Trace:
    find_get_pages_tag+0x36/0x220
    pagevec_lookup_tag+0x21/0x30
    filemap_fdatawait_range+0xbe/0x1e0
    filemap_fdatawait+0x27/0x30
    sync_inodes_sb+0x204/0x2a0
    sync_inodes_one_sb+0x19/0x20
    iterate_supers+0xb2/0x110
    sys_sync+0x44/0xb0
    ia32_do_call+0x13/0x13

  1343                         /*
  1344                          * This function is never used on a shmem/tmpfs
  1345                          * mapping, so a swap entry won't be found here.
  1346                          */
  1347                         BUG();

After commit 0cd6144aadd2 ("mm + fs: prepare for non-page entries in
page cache radix trees") this comment and BUG() are out of date because
exceptional entries can now appear in all mappings - as shadows of
recently evicted pages.

However, as Hugh Dickins notes,

  "it is truly surprising for a PAGECACHE_TAG_WRITEBACK (and probably
   any other PAGECACHE_TAG_*) to appear on an exceptional entry.

   I expect it comes down to an occasional race in RCU lookup of the
   radix_tree: lacking absolute synchronization, we might sometimes
   catch an exceptional entry, with the tag which really belongs with
   the unexceptional entry which was there an instant before."

And indeed, not only is the tree walk lockless, the tags are also read
in chunks, one radix tree node at a time.  There is plenty of time for
page reclaim to swoop in and replace a page that was already looked up
as tagged with a shadow entry.

Remove the BUG() and update the comment.  While reviewing all other
lookup sites for whether they properly deal with shadow entries of
evicted pages, update all the comments and fix memcg file charge moving
to not miss shmem/tmpfs swapcache pages.

Fixes: 0cd6144aadd2 ("mm + fs: prepare for non-page entries in page cache radix trees")
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reported-by: Dave Jones <davej@redhat.com>
Acked-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agomm/compaction: make isolate_freepages start at pageblock boundary
Vlastimil Babka [Tue, 6 May 2014 19:50:03 +0000 (12:50 -0700)]
mm/compaction: make isolate_freepages start at pageblock boundary

The compaction freepage scanner implementation in isolate_freepages()
starts by taking the current cc->free_pfn value as the first pfn.  In a
for loop, it scans from this first pfn to the end of the pageblock, and
then subtracts pageblock_nr_pages from the first pfn to obtain the first
pfn for the next for loop iteration.

This means that when cc->free_pfn starts at offset X rather than being
aligned on pageblock boundary, the scanner will start at offset X in all
scanned pageblock, ignoring potentially many free pages.  Currently this
can happen when

 a) zone's end pfn is not pageblock aligned, or

 b) through zone->compact_cached_free_pfn with CONFIG_HOLES_IN_ZONE
    enabled and a hole spanning the beginning of a pageblock

This patch fixes the problem by aligning the initial pfn in
isolate_freepages() to pageblock boundary.  This also permits replacing
the end-of-pageblock alignment within the for loop with a simple
pageblock_nr_pages increment.

Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Reported-by: Heesub Shin <heesub.shin@samsung.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Mel Gorman <mgorman@suse.de>
Acked-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Michal Nazarewicz <mina86@mina86.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Christoph Lameter <cl@linux.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Dongjun Shin <d.j.shin@samsung.com>
Cc: Sunghwan Yun <sunghwan.yun@samsung.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoMAINTAINERS: zswap/zbud: change maintainer email address
Seth Jennings [Tue, 6 May 2014 19:50:02 +0000 (12:50 -0700)]
MAINTAINERS: zswap/zbud: change maintainer email address

sjenning@linux.vnet.ibm.com is no longer a viable entity.

Signed-off-by: Seth Jennings <sjennings@variantweb.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agomm/page-writeback.c: fix divide by zero in pos_ratio_polynom
Rik van Riel [Tue, 6 May 2014 19:50:01 +0000 (12:50 -0700)]
mm/page-writeback.c: fix divide by zero in pos_ratio_polynom

It is possible for "limit - setpoint + 1" to equal zero, after getting
truncated to a 32 bit variable, and resulting in a divide by zero error.

Using the fully 64 bit divide functions avoids this problem.  It also
will cause pos_ratio_polynom() to return the correct value when
(setpoint - limit) exceeds 2^32.

Also uninline pos_ratio_polynom, at Andrew's request.

Signed-off-by: Rik van Riel <riel@redhat.com>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Cc: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agohugetlb: ensure hugepage access is denied if hugepages are not supported
Nishanth Aravamudan [Tue, 6 May 2014 19:50:00 +0000 (12:50 -0700)]
hugetlb: ensure hugepage access is denied if hugepages are not supported

Currently, I am seeing the following when I `mount -t hugetlbfs /none
/dev/hugetlbfs`, and then simply do a `ls /dev/hugetlbfs`.  I think it's
related to the fact that hugetlbfs is properly not correctly setting
itself up in this state?:

  Unable to handle kernel paging request for data at address 0x00000031
  Faulting instruction address: 0xc000000000245710
  Oops: Kernel access of bad area, sig: 11 [#1]
  SMP NR_CPUS=2048 NUMA pSeries
  ....

In KVM guests on Power, in a guest not backed by hugepages, we see the
following:

  AnonHugePages:         0 kB
  HugePages_Total:       0
  HugePages_Free:        0
  HugePages_Rsvd:        0
  HugePages_Surp:        0
  Hugepagesize:         64 kB

HPAGE_SHIFT == 0 in this configuration, which indicates that hugepages
are not supported at boot-time, but this is only checked in
hugetlb_init().  Extract the check to a helper function, and use it in a
few relevant places.

This does make hugetlbfs not supported (not registered at all) in this
environment.  I believe this is fine, as there are no valid hugepages
and that won't change at runtime.

[akpm@linux-foundation.org: use pr_info(), per Mel]
[akpm@linux-foundation.org: fix build when HPAGE_SHIFT is undefined]
Signed-off-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoslub: fix memcg_propagate_slab_attrs
Vladimir Davydov [Tue, 6 May 2014 19:49:59 +0000 (12:49 -0700)]
slub: fix memcg_propagate_slab_attrs

After creating a cache for a memcg we should initialize its sysfs attrs
with the values from its parent.  That's what memcg_propagate_slab_attrs
is for.  Currently it's broken - we clearly muddled root-vs-memcg caches
there.  Let's fix it up.

Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agodrivers/rtc/rtc-pcf8523.c: fix month definition
Chris Cui [Tue, 6 May 2014 19:49:58 +0000 (12:49 -0700)]
drivers/rtc/rtc-pcf8523.c: fix month definition

PCF8523 uses 1-12 to represent month according to datasheet.
link: www.nxp.com/documents/data_sheet/PCF8523.pdf.

Signed-off-by: Chris Cui <chris.wei.cui@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Tue, 6 May 2014 19:22:20 +0000 (12:22 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs

Pull vfs fixes from Al Viro:
 "dcache fixes + kvfree() (uninlined, exported by mm/util.c) + posix_acl
  bugfix from hch"

The dcache fixes are for a subtle LRU list corruption bug reported by
Miklos Szeredi, where people inside IBM saw list corruptions with the
LTP/host01 test.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  nick kvfree() from apparmor
  posix_acl: handle NULL ACL in posix_acl_equiv_mode
  dcache: don't need rcu in shrink_dentry_list()
  more graceful recovery in umount_collect()
  don't remove from shrink list in select_collect()
  dentry_kill(): don't try to remove from shrink list
  expand the call of dentry_lru_del() in dentry_kill()
  new helper: dentry_free()
  fold try_prune_one_dentry()
  fold d_kill() and d_free()
  fix races between __d_instantiate() and checks of dentry flags

10 years agonick kvfree() from apparmor
Al Viro [Tue, 6 May 2014 18:02:53 +0000 (14:02 -0400)]
nick kvfree() from apparmor

too many places open-code it

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
10 years agoposix_acl: handle NULL ACL in posix_acl_equiv_mode
Christoph Hellwig [Sun, 4 May 2014 11:03:32 +0000 (13:03 +0200)]
posix_acl: handle NULL ACL in posix_acl_equiv_mode

Various filesystems don't bother checking for a NULL ACL in
posix_acl_equiv_mode, and thus can dereference a NULL pointer when it
gets passed one. This usually happens from the NFS server, as the ACL tools
never pass a NULL ACL, but instead of one representing the mode bits.

Instead of adding boilerplat to all filesystems put this check into one place,
which will allow us to remove the check from other filesystems as well later
on.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Ben Greear <greearb@candelatech.com>
Reported-by: Marco Munderloh <munderl@tnt.uni-hannover.de>,
Cc: Chuck Lever <chuck.lever@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi...
Linus Torvalds [Tue, 6 May 2014 16:09:35 +0000 (09:09 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mszeredi/fuse

Pull fuse fixes from Miklos Szeredi:
 "This adds ctime update in the new cached writeback mode and also
  fixes/simplifies the mtime update handling.  Support for rename flags
  (aka renameat2) is also added to the userspace API"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
  fuse: add renameat2 support
  fuse: clear MS_I_VERSION
  fuse: clear FUSE_I_CTIME_DIRTY flag on setattr
  fuse: trust kernel i_ctime only
  fuse: remove .update_time
  fuse: allow ctime flushing to userspace
  fuse: fuse: add time_gran to INIT_OUT
  fuse: add .write_inode
  fuse: clean up fsync
  fuse: fuse: fallocate: use file_update_time()
  fuse: update mtime on open(O_TRUNC) in atomic_o_trunc mode
  fuse: update mtime on truncate(2)
  fuse: do not use uninitialized i_mode
  fuse: fix mtime update error in fsync
  fuse: check fallocate mode
  fuse: add __exit to fuse_ctl_cleanup

10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Linus Torvalds [Tue, 6 May 2014 16:08:03 +0000 (09:08 -0700)]
Merge git://git./linux/kernel/git/davem/sparc

Pull sparc fixes from David Miller:
 "I've been auditing the THP support on sparc64 and found several bugs,
  hopefully most of which are fixed completely here.

  Also an RT kernel locking fix from Kirill Tkhai"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc64: Give more detailed information in {pgd,pmd}_ERROR() and kill pte_ERROR().
  sparc64: Add basic validations to {pud,pmd}_bad().
  sparc64: Use 'ILOG2_4MB' instead of constant '22'.
  sparc64: Fix range check in kern_addr_valid().
  sparc64: Fix top-level fault handling bugs.
  sparc64: Handle 32-bit tasks properly in compute_effective_address().
  sparc64: Don't use _PAGE_PRESENT in pte_modify() mask.
  sparc64: Fix hex values in comment above pte_modify().
  sparc64: Fix bugs in get_user_pages_fast() wrt. THP.
  sparc64: Fix huge PMD invalidation.
  sparc64: Fix executable bit testing in set_pmd_at() paths.
  sparc64: Normalize NMI watchdog logging and behavior.
  sparc64: Make itc_sync_lock raw
  sparc64: Fix argument sign extension for compat_sys_futex().

10 years agodrm/radeon: add pci ids for Mullins
Samuel Li [Wed, 30 Apr 2014 22:40:55 +0000 (18:40 -0400)]
drm/radeon: add pci ids for Mullins

Signed-off-by: Samuel Li <samuel.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
10 years agodrm/radeon: add Mullins VCE support
Leo Liu [Wed, 30 Apr 2014 22:40:54 +0000 (18:40 -0400)]
drm/radeon: add Mullins VCE support

VCE 2.0 just like the other CIK parts.

Signed-off-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
10 years agodrm/radeon: modesetting updates for Mullins.
Samuel Li [Wed, 30 Apr 2014 22:40:53 +0000 (18:40 -0400)]
drm/radeon: modesetting updates for Mullins.

Uses the same code as Kabini.

Signed-off-by: Samuel Li <samuel.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
10 years agodrm/radeon: dpm updates for KV/KB
Alex Deucher [Wed, 30 Apr 2014 22:40:52 +0000 (18:40 -0400)]
drm/radeon: dpm updates for KV/KB

- Use vddc/sclk dep table for voltage if available
- Fix UVD DPM setup
- Patch voltage tables properly for non-UVD blocks
- Fix DPM + UVD/VCE on Mullins

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
10 years agodrm/radeon: add Mullins dpm support.
Samuel Li [Wed, 30 Apr 2014 22:40:51 +0000 (18:40 -0400)]
drm/radeon: add Mullins dpm support.

Generic dpm support similar to Kabini. Mullins specific features
will be worked on later.

Signed-off-by: Samuel Li <samuel.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
10 years agodrm/radeon: add Mullins UVD support.
Samuel Li [Wed, 30 Apr 2014 22:40:50 +0000 (18:40 -0400)]
drm/radeon: add Mullins UVD support.

Has same version of UVD as other CIK parts.

Signed-off-by: Samuel Li <samuel.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
10 years agodrm/radeon: update cik init for Mullins.
Samuel Li [Wed, 30 Apr 2014 22:40:49 +0000 (18:40 -0400)]
drm/radeon: update cik init for Mullins.

Also add golden registers, update firmware loading functions.

Signed-off-by: Samuel Li <samuel.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
10 years agodrm/radeon: add Mullins chip family
Samuel Li [Wed, 30 Apr 2014 22:40:48 +0000 (18:40 -0400)]
drm/radeon: add Mullins chip family

Mullins is a new CI-based APU.

Signed-off-by: Samuel Li <samuel.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
10 years agodrm/radeon: lower the ref * post PLL maximum
Christian König [Thu, 1 May 2014 17:00:41 +0000 (19:00 +0200)]
drm/radeon: lower the ref * post PLL maximum

Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=75241

Signed-off-by: Christian König <christian.koenig@amd.com>
10 years agodrm/radeon: check that we have a clock before PLL setup
Christian König [Fri, 2 May 2014 12:27:42 +0000 (14:27 +0200)]
drm/radeon: check that we have a clock before PLL setup

Partially fixes: https://bugzilla.kernel.org/show_bug.cgi?id=75211

Signed-off-by: Christian König <christian.koenig@amd.com>
10 years agodrm/radeon: drm/radeon: add missing radeon_semaphore_free to error path
Maarten Lankhorst [Thu, 24 Apr 2014 11:29:14 +0000 (13:29 +0200)]
drm/radeon: drm/radeon: add missing radeon_semaphore_free to error path

It would appear this bug has been copy/pasted many times without being noticed.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: Fix num_banks calculation for SI
Michel Dänzer [Tue, 22 Apr 2014 07:53:52 +0000 (16:53 +0900)]
drm/radeon: Fix num_banks calculation for SI

The way the tile mode array index was calculated only makes sense for
the CIK specific macrotile mode array. For SI, we need to use one of the
tile mode array indices reserved for displayable surfaces.

This happened to result in correct display most if not all of the time
because most of the SI tiling modes use the same number of banks.

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
10 years agoslab: Fix off by one in object max number tests.
David Miller [Mon, 5 May 2014 20:20:04 +0000 (16:20 -0400)]
slab: Fix off by one in object max number tests.

If freelist_idx_t is a byte, SLAB_OBJ_MAX_NUM should be 255 not 256, and
likewise if freelist_idx_t is a short, then it should be 65535 not
65536.

This was leading to all kinds of random crashes on sparc64 where
PAGE_SIZE is 8192.  One problem shown was that if spinlock debugging was
enabled, we'd get deadlocks in copy_pte_range() or do_wp_page() with the
same cpu already holding a lock it shouldn't hold, or the lock belonging
to a completely unrelated process.

Fixes: a41adfaa23df ("slab: introduce byte sized index for the freelist of a slab")
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoslab: fix the type of the index on freelist index accessor
Joonsoo Kim [Fri, 18 Apr 2014 07:24:09 +0000 (16:24 +0900)]
slab: fix the type of the index on freelist index accessor

Commit a41adfaa23df ("slab: introduce byte sized index for the freelist
of a slab") changes the size of freelist index and also changes
prototype of accessor function to freelist index.  And there was a
mistake.

The mistake is that although it changes the size of freelist index
correctly, it changes the size of the index of freelist index
incorrectly.  With patch, freelist index can be 1 byte or 2 bytes, that
means that num of object on on a slab can be more than 255.  So we need
more than 1 byte for the index to find the index of free object on
freelist.  But, above patch makes this index type 1 byte, so slab which
have more than 255 objects cannot work properly and in consequence of
it, the system cannot boot.

This issue was reported by Steven King on m68knommu which would use
2 bytes freelist index:

  https://lkml.org/lkml/2014/4/16/433

To fix is easy.  To change the type of the index of freelist index on
accessor functions is enough to fix this bug.  Although 2 bytes is
enough, I use 4 bytes since it have no bad effect and make things more
easier.  This fix was suggested and tested by Steven in his original
report.

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Reported-and-acked-by: Steven King <sfking@fdwdc.com>
Acked-by: Christoph Lameter <cl@linux.com>
Tested-by: James Hogan <james.hogan@imgtec.com>
Tested-by: David Miller <davem@davemloft.net>
Cc: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoasmlinkage: Add explicit __visible to drivers/*, lib/*, kernel/*
Andi Kleen [Thu, 1 May 2014 22:44:38 +0000 (00:44 +0200)]
asmlinkage: Add explicit __visible to drivers/*, lib/*, kernel/*

As requested by Linus add explicit __visible to the asmlinkage users.
This marks functions visible to assembler.

Tree sweep for rest of tree.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1398984278-29319-4-git-send-email-andi@firstfloor.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
10 years agoasmlinkage, x86: Add explicit __visible to arch/x86/*
Andi Kleen [Thu, 1 May 2014 22:44:37 +0000 (00:44 +0200)]
asmlinkage, x86: Add explicit __visible to arch/x86/*

As requested by Linus add explicit __visible to the asmlinkage users.
This marks all functions visible to assembler.

Tree sweep for arch/x86/*

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1398984278-29319-3-git-send-email-andi@firstfloor.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
10 years agoasmlinkage: Revert "lto: Make asmlinkage __visible"
Andi Kleen [Thu, 1 May 2014 22:44:36 +0000 (00:44 +0200)]
asmlinkage: Revert "lto: Make asmlinkage __visible"

As requested by Linus, revert adding __visible to asmlinkage.
Instead we add __visible explicitely to all the symbols
that need it.

This reverts commit 128ea04a9885af9629059e631ddf0cab4815b589.

Link: http://lkml.kernel.org/r/1398984278-29319-2-git-send-email-andi@firstfloor.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
10 years agoHID: sensor-hub: Add in quirk for sensor hub in Lenovo Ideapad Yogas
Peter F. Patel-Schneider [Mon, 5 May 2014 22:55:32 +0000 (15:55 -0700)]
HID: sensor-hub: Add in quirk for sensor hub in Lenovo Ideapad Yogas

The sensor hub in Lenovo Yogas needs the enumeration quirk.  I've been running
the patch for over a month with no problems, whereas the unpatched drivers
reliably mis-initialized the sensors.

Signed-off-by: Peter F. Patel-Schneider <pfpschneider@gmail.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Mon, 5 May 2014 22:59:46 +0000 (15:59 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) e1000e computes header length incorrectly wrt vlans, fix from Vlad
    Yasevich.

 2) ns_capable() check in sock_diag netlink code, from Andrew
    Lutomirski.

 3) Fix invalid queue pairs handling in virtio_net, from Amos Kong.

 4) Checksum offloading busted in sxgbe driver due to incorrect
    descriptor layout, fix from Byungho An.

 5) Fix build failure with SMC_DEBUG set to 2 or larger, from Zi Shen
    Lim.

 6) Fix uninitialized A and X registers in BPF interpreter, from Alexei
    Starovoitov.

 7) Fix arch dependencies of candence driver.

 8) Fix netlink capabilities checking tree-wide, from Eric W Biederman.

 9) Don't dump IFLA_VF_PORTS if netlink request didn't ask for it in
    IFLA_EXT_MASK, from David Gibson.

10) IPV6 FIB dump restart doesn't handle table changes that happen
    meanwhile, causing the code to loop forever or emit dups, fix from
    Kumar Sandararajan.

11) Memory leak on VF removal in bnx2x, from Yuval Mintz.

12) Bug fixes for new Altera TSE driver from Vince Bridgers.

13) Fix route lookup key in SCTP, from Xugeng Zhang.

14) Use BH blocking spinlocks in SLIP, as per a similar fix to CAN/SLCAN
    driver.  From Oliver Hartkopp.

15) TCP doesn't bump retransmit counters in some code paths, fix from
    Eric Dumazet.

16) Clamp delayed_ack in tcp_cubic to prevent theoretical divides by
    zero.  Fix from Liu Yu.

17) Fix locking imbalance in error paths of HHF packet scheduler, from
    John Fastabend.

18) Properly reference the transport module when vsock_core_init() runs,
    from Andy King.

19) Fix buffer overflow in cdc_ncm driver, from Bjørn Mork.

20) IP_ECN_decapsulate() doesn't see a correct SKB network header in
    ip_tunnel_rcv(), fix from Ying Cai.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (132 commits)
  net: macb: Fix race between HW and driver
  net: macb: Remove 'unlikely' optimization
  net: macb: Re-enable RX interrupt only when RX is done
  net: macb: Clear interrupt flags
  net: macb: Pass same size to DMA_UNMAP as used for DMA_MAP
  ip_tunnel: Set network header properly for IP_ECN_decapsulate()
  e1000e: Restrict MDIO Slow Mode workaround to relevant parts
  e1000e: Fix issue with link flap on 82579
  e1000e: Expand workaround for 10Mb HD throughput bug
  e1000e: Workaround for dropped packets in Gig/100 speeds on 82579
  net/mlx4_core: Don't issue PCIe speed/width checks for VFs
  net/mlx4_core: Load the Eth driver first
  net/mlx4_core: Fix slave id computation for single port VF
  net/mlx4_core: Adjust port number in qp_attach wrapper when detaching
  net: cdc_ncm: fix buffer overflow
  Altera TSE: ALTERA_TSE should depend on HAS_DMA
  vsock: Make transport the proto owner
  net: sched: lock imbalance in hhf qdisc
  net: mvmdio: Check for a valid interrupt instead of an error
  net phy: Check for aneg completion before setting state to PHY_RUNNING
  ...

10 years agoMerge tag 'usb-3.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Mon, 5 May 2014 22:51:17 +0000 (15:51 -0700)]
Merge tag 'usb-3.15-rc4' of git://git./linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some small fixes and device ids for 3.15-rc4.

  All have been in linux-next just fine"

* tag 'usb-3.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: Nokia 5300 should be treated as unusual dev
  USB: Nokia 305 should be treated as unusual dev
  fsl-usb: do not test for PHY_CLK_VALID bit on controller version 1.6
  usb: storage: shuttle_usbat: fix discs being detected twice
  usb: qcserial: add a number of Dell devices
  USB: OHCI: fix problem with global suspend on ATI controllers
  usb: gadget: at91-udc: fix irq and iomem resource retrieval
  usb: phy: fsm: change "|" to "||" for condition OTG_STATE_A_WAIT_BCON at statemachine
  usb: phy: fsm: update OTG HNP state transition

10 years agoMerge tag 'tty-3.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Mon, 5 May 2014 22:50:16 +0000 (15:50 -0700)]
Merge tag 'tty-3.15-rc4' of git://git./linux/kernel/git/gregkh/tty

Pull tty/serial fixes from Greg KH:
 "Here are some tty and serial driver fixes for things reported
  recently"

* tag 'tty-3.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: Fix lockless tty buffer race
  Revert "tty: Fix race condition between __tty_buffer_request_room and flush_to_ldisc"
  drivers/tty/hvc: don't free hvc_console_setup after init
  n_tty: Fix n_tty_write crash when echoing in raw mode
  tty: serial: 8250_core.c Bug fix for Exar chips.