firefly-linux-kernel-4.4.55.git
10 years agoclk: samsung: fix build error
Olof Johansson [Mon, 26 May 2014 21:19:34 +0000 (14:19 -0700)]
clk: samsung: fix build error

"clk: samsung: clk-s3c2410-dlck: do not use PNAME macro as it declares
__initdata" had a typo in it which caused build failure. Trivial fix.

Signed-off-by: Olof Johansson <olof@lixom.net>
10 years agoMerge tag 'omap-for-v3.16/prcm-signed' of git://git.kernel.org/pub/scm/linux/kernel...
Olof Johansson [Mon, 26 May 2014 19:59:00 +0000 (12:59 -0700)]
Merge tag 'omap-for-v3.16/prcm-signed' of git://git./linux/kernel/git/tmlind/linux-omap into next/cleanup

Merge "ARM: omap prcm changes for v3.16 merge window" from Tony Lindgren:

PRCM changes for omaps. I ended up merging these with the
big endian changes because of the merge conflicts for read
and write operations. Via Paul Walmsley <paul@pwsan.com>:

Some OMAP PRCM cleanup patches.  These help prepare to convert the PRCM
code into drivers.

Basic build, boot, and PM test results are available here:

http://www.pwsan.com/omap/testlogs/prcm-cleanup-v3.16/20140515213244/

* tag 'omap-for-v3.16/prcm-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP4: PRCM: remove references to cm-regbits-44xx.h from PRCM core files
  ARM: OMAP3/4: PRM: add support of late_init call to prm_ll_ops
  ARM: OMAP3/OMAP4: PRM: add prm_features flags and add IO wakeup under it
  ARM: OMAP3/4: PRM: provide io chain reconfig function through irq setup
  ARM: OMAP2+: PRM: remove unnecessary cpu_is_XXX calls from prm_init / exit
  ARM: OMAP2+: PRCM: cleanup some header includes
  ARM: OMAP4: CM: use cm_base* in register address calculations
  ARM: OMAP2/3: CM: remove some external dependencies
  ARM: OMAP2+: prcm: add omap_test_timeout to prcm-common.h
  ARM: OMAP3: CM: remove a few OMAP34XX_CM_REGADDR defines
  ARM: OMAP: debug-leds: raw read and write endian fix
  ARM: OMAP: counter-32k: raw read and write endian fix
  ARM: OMAP: dmtimer: raw read and write endian fix
  ARM: OMAP2+: raw read and write endian fix

Signed-off-by: Olof Johansson <olof@lixom.net>
10 years agoARM: vexpress: refine dependencies for new code
Arnd Bergmann [Mon, 26 May 2014 15:25:22 +0000 (17:25 +0200)]
ARM: vexpress: refine dependencies for new code

The versatile express changes for 3.16 introduced a number of
build regressions for randconfig kernels by not tracking dependencies
between the components right.

This patch tries to rectify that:

* the mach-vexpress code cannot link without the syscfg driver,
  which in turn needs MFD_VEXPRESS_SYSREG
* various drivers call devm_regmap_init_vexpress_config(), which
  has to be exported so it can be used by loadable modules
* the configuration bus uses OF DT helper functions that are not
  available to platforms disable CONFIG_OF
* The sysreg driver exports GPIOs through gpiolib, which can
  be disabled on some platforms.
* The clocksource code cannot be built on platforms that don't
  use modern timekeeping but rely on gettimeoffset.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
10 years agoclk: samsung: clk-s3c2410-dlck: do not use PNAME macro as it declares __initdata
Heiko Stübner [Fri, 23 May 2014 20:58:53 +0000 (22:58 +0200)]
clk: samsung: clk-s3c2410-dlck: do not use PNAME macro as it declares __initdata

The originally used PNAME macro from the core samsung clock infrastructure
declares the created array as initdata, creating section mismatch warnings
in the dclk driver.

Thus declare them directly, removing these warning.

Reported-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
10 years agoMerge tag 'for-3.16/bcm-cleanup' of git://github.com/broadcom/mach-bcm into next...
Arnd Bergmann [Fri, 23 May 2014 22:28:55 +0000 (00:28 +0200)]
Merge tag 'for-3.16/bcm-cleanup' of git://github.com/broadcom/mach-bcm into next/cleanup

* Clean up mach-bcm config and build targets
* Clean up bcm281xx/21664 SMC code
* Clean up bcm281xx/21664 L2C code

* tag 'for-3.16/bcm-cleanup' of git://github.com/broadcom/mach-bcm:
  ARM: bcm: rename "kona.h" and "kona.c"
  ARM: bcm: rewrite commentary for bcm_kona_do_smc()
  ARM: bcm: use inline assembly for "smc" request
  ARM: bcm: tidy up a few includes
  ARM: bcm: config option for l2 cache support
  ARM: bcm: don't special-case CPU 0 in bcm_kona_smc()
  ARM: bcm: have bcm_kona_smc() return request result
  ARM: bcm: clean up SMC code
  ARM: bcm: err, don't BUG() on SMC init failures
  ARM: bcm: use memory accessors for ioremapped area
  ARM: bcm: clean up config and build targets

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Conflicts:
arch/arm/mach-bcm/Kconfig

10 years agoMerge tag 's3c24xx-clk' of http://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux...
Olof Johansson [Thu, 22 May 2014 05:28:26 +0000 (22:28 -0700)]
Merge tag 's3c24xx-clk' of git./linux/kernel/git/kgene/linux-samsung into next/cleanup

Merge "Samsung S3C24XX updates for 3.16" from Kukjin Kim:

Samsung S3C24XX to use the common clock framework
- S3C2412, S3C2413, S3C2416 and S3C2443 to use CCF
- S3C2410, S3C2440, S3C2442 to use CCF
- Remove legacy samsung clock from mach-s3c24xx/

- Some of them are missed from previous pull-request
- Clock related sutff got ack from Mike and Tomasz
- Created the last commit due to missing changes
  during re-sorting because this branch is provided
  as a base to samsung clk tree.

* tag 's3c24xx-clk' of http://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: (23 commits)
  ARM: S3C24XX: fix merge conflict
  ARM: S3C24XX: remove SAMSUNG_CLOCK remnants after ccf conversion
  ARM: S3C24XX: remove legacy clock code
  ARM: S3C24XX: convert s3c2410 to common clock framework
  ARM: S3C24XX: convert s3c2440 and s3c2442 to common clock framework
  ARM: S3C24XX: add platform code for conversion to the common clock framework
  clk: samsung: add clock controller driver for s3c2410, s3c2440 and s3c2442
  dt-bindings: add documentation for s3c2410 clock controller
  ARM: S3C24XX: enable usage of common dclk if common clock framework is enabled
  clk: samsung: add clock driver for external clock outputs
  ARM: S3C24XX: cpufreq-utils: don't write raw values to MPLLCON when using ccf
  ARM: S3C24XX: convert s3c2412 to common clock framework
  clk: samsung: add clock controller driver for s3c2412
  dt-bindings: add documentation for s3c2412 clock controller
  clk: samsung: add plls used by the early s3c24xx cpus
  ARM: S3C24XX: only store clock registers when old clock code is active
  ARM: S3C24XX: Convert s3c2416 and s3c2443 to common clock framework
  ARM: dts: add clock data for s3c2416
  ARM: S3C24XX: prevent conflicts between ccf and non-ccf s3c24xx-socs
  clk: samsung: add clock-driver for s3c2416, s3c2443 and s3c2450
  ...

Signed-off-by: Olof Johansson <olof@lixom.net>
10 years agoMerge tag 'vexpress/updates-for-3.16' of git://git.linaro.org/people/pawel.moll/linux...
Olof Johansson [Wed, 21 May 2014 21:23:56 +0000 (14:23 -0700)]
Merge tag 'vexpress/updates-for-3.16' of git://git.linaro.org/people/pawel.moll/linux into next/cleanup

Merge "ARM Versatile Express updates for 3.16" from Pawel Moll:

This series reworks VE's platform configuration infrastructure by:

- making it possible to instantiate selected devices from the
  Device Tree, prior to massive population,
- converting custom "func" API into standard "regmap",
- splitting the existing MFD driver into smaller ones and placing
  them into relevant directories.

The common clock framework driver can now be selected individually
(mostly for arm64 sake, where some of them are not used at all).

It also simplifies the machine code, by:

- moving the shed clock info clocksource driver,
- simplifying SMP operations to base them entirely of the DT data,
- moving platform ID checks into relevant driver.

* tag 'vexpress/updates-for-3.16' of git://git.linaro.org/people/pawel.moll/linux:
  ARM: vexpress: move HBI check to sysreg driver
  ARM: vexpress: Simplify SMP operations for DT-powered system
  ARM: vexpress: remove redundant vexpress_dt_cpus_num to get cpu count
  clocksource: Sched clock source for Versatile Express
  clk: versatile: Split config options for sp810 and vexpress_osc
  mfd: vexpress: Define the device as MFD cells
  mfd: syscon: Add platform data with a regmap config name
  mfd: vexpress: Convert custom func API to regmap
  of: Keep track of populated platform devices
  + Linux 3.15-rc5

Signed-off-by: Olof Johansson <olof@lixom.net>
10 years agoMerge tag 'sirf-soc-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/baohua...
Olof Johansson [Tue, 20 May 2014 05:06:02 +0000 (22:06 -0700)]
Merge tag 'sirf-soc-for-3.16' of git://git./linux/kernel/git/baohua/linux into next/cleanup

Merge "ARM: sirf: machine update for 3.16" from Barry Song:

Most of them fix some minor checkpatch issues according to key customers'
requirement. And this patchset also cleanups the clk of clocksource: move
to get clk by dts properity.

* tag 'sirf-soc-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/baohua/linux:
  clocksource:sirf: remove the hardcode for the clk of timers
  irqchip: sirf: fix one minor checkpatch issue
  clocksource: prima2: fix some minor checkpatch issues
  ARM: prima2: rstc: fix some minor checkpatch issues
  + Linux 3.15-rc3

Signed-off-by: Olof Johansson <olof@lixom.net>
10 years agoMerge tag 'for-v3.16/prcm-cleanup-a' of git://git.kernel.org/pub/scm/linux/kernel...
Tony Lindgren [Fri, 16 May 2014 22:26:22 +0000 (15:26 -0700)]
Merge tag 'for-v3.16/prcm-cleanup-a' of git://git./linux/kernel/git/pjw/omap-pending into omap-for-v3.16/prcm

Some OMAP PRCM cleanup patches.  These help prepare to convert the PRCM
code into drivers.

Basic build, boot, and PM test results are available here:

http://www.pwsan.com/omap/testlogs/prcm-cleanup-v3.16/20140515213244/

Conflicts:
arch/arm/mach-omap2/cm3xxx.c
arch/arm/mach-omap2/cm44xx.c

Also fixed up new section mismatch warnings.

10 years agoARM: OMAP4: PRCM: remove references to cm-regbits-44xx.h from PRCM core files
Tero Kristo [Mon, 31 Mar 2014 15:15:52 +0000 (18:15 +0300)]
ARM: OMAP4: PRCM: remove references to cm-regbits-44xx.h from PRCM core files

Done in preparation to make PRCM a standalone driver.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
10 years agoARM: OMAP3/4: PRM: add support of late_init call to prm_ll_ops
Tero Kristo [Mon, 31 Mar 2014 15:15:45 +0000 (18:15 +0300)]
ARM: OMAP3/4: PRM: add support of late_init call to prm_ll_ops

SoC specific late_init call is now registered during PRM init, and will
be called automatically by PRM core. This helps to get rid of some
redundant initcalls and cpu_is_X checks from the PRM code.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
10 years agoARM: OMAP3/OMAP4: PRM: add prm_features flags and add IO wakeup under it
Tero Kristo [Mon, 31 Mar 2014 15:15:44 +0000 (18:15 +0300)]
ARM: OMAP3/OMAP4: PRM: add prm_features flags and add IO wakeup under it

prm_features flag will contain SoC specific feature enabler flags. Initially
IO wakeup is added under this. Helps to get rid of runtime cpu_is_X checks.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
10 years agoARM: OMAP3/4: PRM: provide io chain reconfig function through irq setup
Tero Kristo [Mon, 31 Mar 2014 15:15:43 +0000 (18:15 +0300)]
ARM: OMAP3/4: PRM: provide io chain reconfig function through irq setup

This helps to make the PRM registration modular, and also gets rid of a
cpu type check done later.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
10 years agoARM: OMAP2+: PRM: remove unnecessary cpu_is_XXX calls from prm_init / exit
Tero Kristo [Mon, 12 May 2014 01:54:58 +0000 (19:54 -0600)]
ARM: OMAP2+: PRM: remove unnecessary cpu_is_XXX calls from prm_init / exit

Done in preparation to make PRM its own driver, as the cpu_is_XXX calls are
not available outside mach-omap2 folder.

The init functions are called only from cpu specific init chain, and thus
don't need to double check against cpu type.

The exit calls check against the data provided during init-time registration
and thus don't need cpu check either.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
[paul@pwsan.com: updated to apply]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
10 years agoARM: OMAP2+: PRCM: cleanup some header includes
Tero Kristo [Mon, 12 May 2014 01:41:50 +0000 (19:41 -0600)]
ARM: OMAP2+: PRCM: cleanup some header includes

Some of the includes are totally unnecessary, remove some others in
preparation to make the PRCM its own driver.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
[paul@pwsan.com: updated to apply; fixed build error on OMAP2xxx-only configs]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
10 years agoARM: OMAP4: CM: use cm_base* in register address calculations
Tero Kristo [Mon, 31 Mar 2014 15:15:40 +0000 (18:15 +0300)]
ARM: OMAP4: CM: use cm_base* in register address calculations

OMAP44XX_CM*_REGADDR macros should be avoided, instead use the cm_base*
iomaps.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
10 years agoARM: OMAP2/3: CM: remove some external dependencies
Tero Kristo [Tue, 4 Mar 2014 16:19:03 +0000 (18:19 +0200)]
ARM: OMAP2/3: CM: remove some external dependencies

Done in preparation to move the CM driver to its own driver folder.
These drivers will not have access to functionality under mach-omap2 anymore.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
10 years agoARM: OMAP2+: prcm: add omap_test_timeout to prcm-common.h
Tero Kristo [Tue, 4 Mar 2014 16:19:02 +0000 (18:19 +0200)]
ARM: OMAP2+: prcm: add omap_test_timeout to prcm-common.h

Done in preparation to move cm/prm to drivers. These will still use
omap_test_timeout, but will not have access to common.h header under
mach-omap2 anymore.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
10 years agoARM: vexpress: move HBI check to sysreg driver
Pawel Moll [Thu, 6 Feb 2014 14:33:44 +0000 (14:33 +0000)]
ARM: vexpress: move HBI check to sysreg driver

The last reason for static memory mapping is the HBI (board
identification number) check early in the machine code.

Moving the check to the sysreg driver makes it possible to
completely remove the early mapping and init functions.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
10 years agoARM: vexpress: Simplify SMP operations for DT-powered system
Pawel Moll [Tue, 17 Sep 2013 17:30:58 +0000 (18:30 +0100)]
ARM: vexpress: Simplify SMP operations for DT-powered system

As all cores must be properly described in the Device Tree,
there is no point in getting their numbers from SCU on
A5/A9 platforms. This significantly simplifies the code,
removing the need for flat-tree scanning and early static
mapping.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
10 years agoARM: vexpress: remove redundant vexpress_dt_cpus_num to get cpu count
Sudeep KarkadaNagesha [Tue, 23 Jul 2013 11:32:41 +0000 (12:32 +0100)]
ARM: vexpress: remove redundant vexpress_dt_cpus_num to get cpu count

arm_dt_init_cpu_maps parses the device tree, validates and sets the
cpu_possible_mask appropriately. It is unnecessary to do another DT
parse to get the number of cpus, use num_possible_cpus instead.

This patch also removes setting cpu_present_mask as platforms should
only re-initialize it in smp_prepare_cpus() if present != possible.

Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
10 years agoclocksource: Sched clock source for Versatile Express
Pawel Moll [Wed, 16 Apr 2014 17:22:59 +0000 (18:22 +0100)]
clocksource: Sched clock source for Versatile Express

This patch adds a trival sched clock source using free
running, 24MHz clocked counter present in the ARM Ltd.
reference platforms (Versatile, RealView, Versatile
Express) System Registers block.

This code replaces the call in the VE machine code.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
10 years agoclk: versatile: Split config options for sp810 and vexpress_osc
Pawel Moll [Tue, 17 Sep 2013 16:16:15 +0000 (17:16 +0100)]
clk: versatile: Split config options for sp810 and vexpress_osc

Move the Kconfig entry for Versatile (& Express) clock drivers
into a separate file and add individual options for sp810
and vexpress_osc drivers, as they are optional in some
configurations and may have separate dependencies.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
10 years agomfd: vexpress: Define the device as MFD cells
Pawel Moll [Wed, 23 Apr 2014 09:49:31 +0000 (10:49 +0100)]
mfd: vexpress: Define the device as MFD cells

This patch - finally, after over 6 months! :-( - addresses
Samuel's request to split the vexpress-sysreg driver into
smaller portions and define the device in a form of MFD
cells:

* LEDs code has been completely removed and replaced with
  "gpio-leds" nodes in the tree (referencing dedicated
  GPIO subnodes in sysreg - bindings documentation updated);
  this also better fits the reality as some variants of the
  motherboard don't have all the LEDs populated

* syscfg bridge code has been extracted into a separate
  driver (placed in drivers/misc for no better place)

* all the ID & MISC registers are defined as sysconf
  making them available for other drivers should they need
  to use them (and also to the user via /sys/kernel/debug/regmap
  which can be helpful in platform debugging)

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
10 years agomfd: syscon: Add platform data with a regmap config name
Pawel Moll [Wed, 12 Feb 2014 10:47:10 +0000 (10:47 +0000)]
mfd: syscon: Add platform data with a regmap config name

Define syscon platform data structure that can be used
to define a regmap config name. This is particularly useful
in the regmap debugfs when there is more than one syscon
device registered, to distinguish the register blocks.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
10 years agomfd: vexpress: Convert custom func API to regmap
Pawel Moll [Wed, 30 Apr 2014 15:46:29 +0000 (16:46 +0100)]
mfd: vexpress: Convert custom func API to regmap

Components of the Versatile Express platform (configuration
microcontrollers on motherboard and daughterboards in particular)
talk to each other over a custom configuration bus. They
provide miscellaneous functions (from clock generator control
to energy sensors) which are represented as platform devices
(and Device Tree nodes). The transactions on the bus can
be generated by different "bridges" in the system, some
of which are universal for the whole platform (for the price
of high transfer latencies), others restricted to a subsystem
(but much faster).

Until now drivers for such functions were using custom "func"
API, which is being replaced in this patch by regmap calls.
This required:

* a rework (and move to drivers/bus directory, as suggested
  by Samuel and Arnd) of the config bus core, which is much
  simpler now and uses device model infrastructure (class)
  to keep track of the bridges; non-DT case (soon to be
  retired anyway) is simply covered by a special device
  registration function

* the new config-bus driver also takes over device population,
  so there is no need for special matching table for
  of_platform_populate nor "simple-bus" hack in the arm64
  model dtsi file (relevant bindings documentation has
  been updated); this allows all the vexpress devices
  fit into normal device model, making it possible
  to remove plenty of early inits and other hacks in
  the near future

* adaptation of the syscfg bridge implementation in the
  sysreg driver, again making it much simpler; there is
  a special case of the "energy" function spanning two
  registers, where they should be both defined in the tree
  now, but backward compatibility is maintained in the code

* modification of the relevant drivers:

  * hwmon - just a straight-forward API change
  * power/reset driver - API change
  * regulator - API change plus error handling
    simplification
  * osc clock driver - this one required larger rework
    in order to turn in into a standard platform driver

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Acked-by: Mark Brown <broonie@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Mike Turquette <mturquette@linaro.org>
10 years agoof: Keep track of populated platform devices
Pawel Moll [Thu, 15 May 2014 15:55:24 +0000 (16:55 +0100)]
of: Keep track of populated platform devices

In "Device Tree powered" systems, platform devices are usually massively
populated with of_platform_populate() call, executed at some level of
initcalls, either by generic architecture or by platform-specific code.

There are situations though where certain devices must be created (and
bound with drivers) before all the others. This presents a challenge,
as devices created explicitly would be created again by
of_platform_populate().

This patch tries to solve that issue in a generic way, adding a
"populated" flag for a DT node description. Subsequent
of_platform_populate() will skip such nodes (and its children) in
a similar way to the non-available ones.

This patch also adds of_platform_depopulate() as an operation
complementary to the _populate() one. It removes a platform or an amba
device populated from the Device Tree, together with its all children
(leaving, however, devices without associated of_node untouched)
clearing the "populated" flag on the way.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Grant Likely <grant.likely@linaro.org>
10 years agoARM: S3C24XX: fix merge conflict
Kukjin Kim [Thu, 8 May 2014 20:51:43 +0000 (05:51 +0900)]
ARM: S3C24XX: fix merge conflict

Missed some changes during re-sorting this branch.
So fixed it.

Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
10 years agoARM: S3C24XX: remove SAMSUNG_CLOCK remnants after ccf conversion
Heiko Stuebner [Thu, 8 May 2014 20:51:43 +0000 (05:51 +0900)]
ARM: S3C24XX: remove SAMSUNG_CLOCK remnants after ccf conversion

This finally removes all remaining SAMSUNG_CLOCK conditional code
from s3c24xx architectures.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
10 years agoARM: S3C24XX: remove legacy clock code
Heiko Stuebner [Thu, 8 May 2014 20:49:36 +0000 (05:49 +0900)]
ARM: S3C24XX: remove legacy clock code

With the move to the common clock framework completed for s3c2410, s3c2440
and s3c2442, the legacy clock code for these machines can go away too.

This also includes the legacy dclk code, as all legacy users are converted.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
10 years agoARM: S3C24XX: convert s3c2410 to common clock framework
Heiko Stuebner [Thu, 8 May 2014 20:49:29 +0000 (05:49 +0900)]
ARM: S3C24XX: convert s3c2410 to common clock framework

Convert the machines using the s3c2410 to use the new driver based
on the common clock framework instead of the legacy Samsung clock driver.

As with the s3c244x, machines using the clkout output will need a fixup
from someone with the hardware.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
10 years agoARM: S3C24XX: convert s3c2440 and s3c2442 to common clock framework
Heiko Stuebner [Thu, 8 May 2014 20:49:19 +0000 (05:49 +0900)]
ARM: S3C24XX: convert s3c2440 and s3c2442 to common clock framework

Convert all machines using these cpus to use the ccf clock driver
instead of the legacy Samsung clock implementation.

Some of the more esotheric machines will probably need a fixup, as they
do strange things to the clkout outputs, that I did not really understand
nor have the hardware to check.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
10 years agoARM: S3C24XX: add platform code for conversion to the common clock framework
Heiko Stuebner [Thu, 8 May 2014 20:49:14 +0000 (05:49 +0900)]
ARM: S3C24XX: add platform code for conversion to the common clock framework

This adds the necessary init functions to init the clocks from the common
clock framework and necessary CONFIG_SAMSUNG_CLOCK ifdefs around the legacy
clock code.

This also includes empty stubs for the *_setup_clocks functions that are
called from the cpufreq driver on resume.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
10 years agoclk: samsung: add clock controller driver for s3c2410, s3c2440 and s3c2442
Heiko Stuebner [Thu, 8 May 2014 20:49:10 +0000 (05:49 +0900)]
clk: samsung: add clock controller driver for s3c2410, s3c2440 and s3c2442

This driver can handle the clock controllers of the socs mentioned above,
as they share a common clock tree with only small differences.

The clock structure is built according to the manuals of the included
SoCs and might include changes in comparison to the previous clock
structure.

As pll-rate-tables only the 12mhz variants are currently included.
The original code was wrongly checking for 169mhz xti values [a 0 to much
at the end], so the original 16mhz pll table would have never been
included and its values are so obscure that I have no possibility to
at least check their sane-ness. When using the formula from the manual
the resulting frequency is near the table value but still slightly off.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
10 years agodt-bindings: add documentation for s3c2410 clock controller
Heiko Stuebner [Thu, 8 May 2014 20:49:05 +0000 (05:49 +0900)]
dt-bindings: add documentation for s3c2410 clock controller

Describe the clock controller of s3c2410, s3c2440 and s3c2442.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
10 years agoARM: S3C24XX: enable usage of common dclk if common clock framework is enabled
Heiko Stuebner [Thu, 8 May 2014 20:48:57 +0000 (05:48 +0900)]
ARM: S3C24XX: enable usage of common dclk if common clock framework is enabled

Add platform device and select the correct implementation automatically
depending on wether the old samsung_clock or the common clock framework
is enabled.

This is only done for machines already using the old dclk implementation,
as everybody else should move to use dt anyway.

The machine-specific settings for the external clocks will have to be set
by somebody with knowledge about the specific hardware.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
[pebolle@tiscali.nl: pointed out typo and fixed]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
10 years agoclocksource:sirf: remove the hardcode for the clk of timers
Zhiwu Song [Mon, 5 May 2014 11:30:04 +0000 (19:30 +0800)]
clocksource:sirf: remove the hardcode for the clk of timers

Nobody want to know the connection between io clk and timer clk,
so exposing this information to timer module is not reasonable.
this patch moves to define the timers' clk in dt.

Signed-off-by: Zhiwu Song <Zhiwu.Song@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
10 years agoirqchip: sirf: fix one minor checkpatch issue
Bin Shi [Tue, 6 May 2014 14:58:36 +0000 (22:58 +0800)]
irqchip: sirf: fix one minor checkpatch issue

fix "line line over 80 characters" for the below:
static int __init sirfsoc_irq_init(struct device_node *np, struct device_node *parent)

the users of the codes - key customers really care about that.

Signed-off-by: Bin Shi <Bin.Shi@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
10 years agoclocksource: prima2: fix some minor checkpatch issues
Bin Shi [Tue, 6 May 2014 14:42:29 +0000 (22:42 +0800)]
clocksource: prima2: fix some minor checkpatch issues

Fix the "line over 80 characters". users of the codes - key customers
really care about that.

WARNING: line over 80 characters
64: FILE: timer-prima2.c:64:
+       WARN_ON(!(readl_relaxed(sirfsoc_timer_base + SIRFSOC_TIMER_STATUS) & BIT(0)));

WARNING: line over 80 characters
80: FILE: timer-prima2.c:80:
+       writel_relaxed(SIRFSOC_TIMER_LATCH_BIT, sirfsoc_timer_base + SIRFSOC_TIMER_LATCH);

WARNING: line over 80 characters
82: FILE: timer-prima2.c:82:
+       cycles = (cycles << 32) | readl_relaxed(sirfsoc_timer_base + SIRFSOC_TIMER_LATCHED_LO);

WARNING: line over 80 characters
92: FILE: timer-prima2.c:92:
+       writel_relaxed(SIRFSOC_TIMER_LATCH_BIT, sirfsoc_timer_base + SIRFSOC_TIMER_LATCH);

WARNING: line over 80 characters
96: FILE: timer-prima2.c:96:
+       writel_relaxed(SIRFSOC_TIMER_LATCH_BIT, sirfsoc_timer_base + SIRFSOC_TIMER_LATCH);

WARNING: line over 80 characters
111: FILE: timer-prima2.c:111:
+               writel_relaxed(val | BIT(0), sirfsoc_timer_base + SIRFSOC_TIMER_INT_EN);

WARNING: line over 80 characters
114: FILE: timer-prima2.c:114:
+               writel_relaxed(val & ~BIT(0), sirfsoc_timer_base + SIRFSOC_TIMER_INT_EN);

WARNING: line over 80 characters
126: FILE: timer-prima2.c:126:
+       writel_relaxed(SIRFSOC_TIMER_LATCH_BIT, sirfsoc_timer_base + SIRFSOC_TIMER_LATCH);

WARNING: line over 80 characters
129: FILE: timer-prima2.c:129:
+               sirfsoc_timer_reg_val[i] = readl_relaxed(sirfsoc_timer_base + sirfsoc_timer_reg_list[i]);

WARNING: line over 80 characters
137: FILE: timer-prima2.c:137:
+               writel_relaxed(sirfsoc_timer_reg_val[i], sirfsoc_timer_base + sirfsoc_timer_reg_list[i]);

WARNING: line over 80 characters
139: FILE: timer-prima2.c:139:
+       writel_relaxed(sirfsoc_timer_reg_val[SIRFSOC_TIMER_REG_CNT - 2], sirfsoc_timer_base + SIRFSOC_TIMER_COUNTER_LO);

WARNING: line over 80 characters
140: FILE: timer-prima2.c:140:
+       writel_relaxed(sirfsoc_timer_reg_val[SIRFSOC_TIMER_REG_CNT - 1], sirfsoc_timer_base + SIRFSOC_TIMER_COUNTER_HI);

WARNING: line over 80 characters
216: FILE: timer-prima2.c:216:
+CLOCKSOURCE_OF_DECLARE(sirfsoc_prima2_timer, "sirf,prima2-tick", sirfsoc_prima2_timer_init);

total: 0 errors, 13 warnings, 216 lines checked

timer-prima2.c has style problems, please review.

If any of these errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.

Signed-off-by: Bin Shi <Bin.Shi@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
10 years agoARM: prima2: rstc: fix some minor checkpatch issues
Xianglong Du [Wed, 7 May 2014 07:08:21 +0000 (15:08 +0800)]
ARM: prima2: rstc: fix some minor checkpatch issues

this patch fixes the below minor issues:

WARNING: line over 80 characters
39: FILE: arch/arm/mach-prima2/rstc.c:39:
+                * Writing 1 to this bit resets corresponding block. Writing 0 to this

WARNING: line over 80 characters
41: FILE: arch/arm/mach-prima2/rstc.c:41:
+                * datasheet doesn't require explicit delay between the set and clear

WARNING: line over 80 characters
44: FILE: arch/arm/mach-prima2/rstc.c:44:
+               writel(readl(sirfsoc_rstc_base + (reset_bit / 32) * 4) | (1 << reset_bit),

WARNING: msleep < 20ms can sleep for up to 20ms; see Documentation/timers/timers-howto.txt
46: FILE: arch/arm/mach-prima2/rstc.c:46:
+               msleep(10);

WARNING: line over 80 characters
47: FILE: arch/arm/mach-prima2/rstc.c:47:
+               writel(readl(sirfsoc_rstc_base + (reset_bit / 32) * 4) & ~(1 << reset_bit),

WARNING: line over 80 characters
52: FILE: arch/arm/mach-prima2/rstc.c:52:
+                * Writing 1 to SET register resets corresponding block. Writing 1 to CLEAR

WARNING: line over 80 characters
54: FILE: arch/arm/mach-prima2/rstc.c:54:
+                * datasheet doesn't require explicit delay between the set and clear

WARNING: line over 80 characters
57: FILE: arch/arm/mach-prima2/rstc.c:57:
+               writel(1 << reset_bit, sirfsoc_rstc_base + (reset_bit / 32) * 8);

WARNING: msleep < 20ms can sleep for up to 20ms; see Documentation/timers/timers-howto.txt
58: FILE: arch/arm/mach-prima2/rstc.c:58:
+               msleep(10);

WARNING: line over 80 characters
59: FILE: arch/arm/mach-prima2/rstc.c:59:
+               writel(1 << reset_bit, sirfsoc_rstc_base + (reset_bit / 32) * 8 + 4);

total: 0 errors, 10 warnings, 120 lines checked

Signed-off-by: Xianglong Du <Xianglong.Du@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
10 years agoARM: OMAP3: CM: remove a few OMAP34XX_CM_REGADDR defines
Tero Kristo [Tue, 4 Mar 2014 16:19:01 +0000 (18:19 +0200)]
ARM: OMAP3: CM: remove a few OMAP34XX_CM_REGADDR defines

Remove a few OMAP34XX_CM_REGADDR defines and replace these with offset
based register accesses instead.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
10 years agoleds: Fix build for LEDS_CLASS=m on versatile
Arnd Bergmann [Tue, 6 May 2014 12:58:22 +0000 (14:58 +0200)]
leds: Fix build for LEDS_CLASS=m on versatile

I got a build error today, since LEDS_VERSATILE can be built-in while LEDS_CLASS
is a module:

drivers/built-in.o: In function `versatile_leds_probe':
:(.text+0x155020): undefined reference to `led_classdev_register'

I suggest we turn this option into 'tristate' so that the dependency
tracking works correctly.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
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 agoclk: samsung: add clock driver for external clock outputs
Heiko Stuebner [Thu, 8 May 2014 20:48:51 +0000 (05:48 +0900)]
clk: samsung: add clock driver for external clock outputs

This adds a driver for controlling the external clock outputs of
s3c24xx architectures including the dclk muxes and dividers.

The driver at the moment only supports the legacy non-dt boards using these
clock outputs. The clock-output control itself is part of the system-controller
mainly controlled by the pinctrl drivers. So it should most likely be
integrated there for dt platforms.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
10 years agoARM: S3C24XX: cpufreq-utils: don't write raw values to MPLLCON when using ccf
Heiko Stuebner [Thu, 8 May 2014 20:48:44 +0000 (05:48 +0900)]
ARM: S3C24XX: cpufreq-utils: don't write raw values to MPLLCON when using ccf

The s3c24xx cpufreq driver needs to change the mpll speed and was doing
this by writing raw values from a translation table into the MPLLCON
register.

Change this to use a regular clk_set_rate call when using the common
clock framework and only write the raw value in the samsung_clock case.

The s3c cpufreq driver does already aquire the mpll, so simply add a reference
to struct s3c_cpufreq_config to let set_fvco access it.

While struct clk is opaque the differenciation between samsung clock and
common clock is kept, as the samsung-clock mpll clk does not implement a
real set_rate.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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 agoARM: OMAP: debug-leds: raw read and write endian fix
Victor Kamensky [Tue, 15 Apr 2014 17:37:49 +0000 (20:37 +0300)]
ARM: OMAP: debug-leds: raw read and write endian fix

All OMAP IP blocks expect LE data, but CPU may operate in BE mode.
Need to use endian neutral functions to read/write h/w registers.
I.e instead of __raw_read[lw] and __raw_write[lw] functions code
need to use read[lw]_relaxed and write[lw]_relaxed functions.
If the first simply reads/writes register, the second will byteswap
it if host operates in BE mode.

Changes are trivial sed like replacement of __raw_xxx functions
with xxx_relaxed variant.

Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org>
Signed-off-by: Taras Kondratiuk <taras.kondratiuk@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
10 years agoARM: OMAP: counter-32k: raw read and write endian fix
Victor Kamensky [Tue, 15 Apr 2014 17:37:48 +0000 (20:37 +0300)]
ARM: OMAP: counter-32k: raw read and write endian fix

All OMAP IP blocks expect LE data, but CPU may operate in BE mode.
Need to use endian neutral functions to read/write h/w registers.
I.e instead of __raw_read[lw] and __raw_write[lw] functions code
need to use read[lw]_relaxed and write[lw]_relaxed functions.
If the first simply reads/writes register, the second will byteswap
it if host operates in BE mode.

Changes are trivial sed like replacement of __raw_xxx functions
with xxx_relaxed variant.

Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org>
Signed-off-by: Taras Kondratiuk <taras.kondratiuk@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
10 years agoARM: OMAP: dmtimer: raw read and write endian fix
Victor Kamensky [Tue, 15 Apr 2014 17:37:47 +0000 (20:37 +0300)]
ARM: OMAP: dmtimer: raw read and write endian fix

All OMAP IP blocks expect LE data, but CPU may operate in BE mode.
Need to use endian neutral functions to read/write h/w registers.
I.e instead of __raw_read[lw] and __raw_write[lw] functions code
need to use read[lw]_relaxed and write[lw]_relaxed functions.
If the first simply reads/writes register, the second will byteswap
it if host operates in BE mode.

Changes are trivial sed like replacement of __raw_xxx functions
with xxx_relaxed variant.

Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org>
Signed-off-by: Taras Kondratiuk <taras.kondratiuk@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
10 years agoARM: OMAP2+: raw read and write endian fix
Victor Kamensky [Tue, 15 Apr 2014 17:37:46 +0000 (20:37 +0300)]
ARM: OMAP2+: raw read and write endian fix

All OMAP IP blocks expect LE data, but CPU may operate in BE mode.
Need to use endian neutral functions to read/write h/w registers.
I.e instead of __raw_read[lw] and __raw_write[lw] functions code
need to use read[lw]_relaxed and write[lw]_relaxed functions.
If the first simply reads/writes register, the second will byteswap
it if host operates in BE mode.

Changes are trivial sed like replacement of __raw_xxx functions
with xxx_relaxed variant.

Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org>
Signed-off-by: Taras Kondratiuk <taras.kondratiuk@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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>