firefly-linux-kernel-4.4.55.git
12 years agoextcon: Add support irq domain for MAX8997 muic
Chanwoo Choi [Mon, 2 Jul 2012 00:03:00 +0000 (09:03 +0900)]
extcon: Add support irq domain for MAX8997 muic

This patch add support irq domain for Maxim MAX8997 muic
instead of irq_base in platform data and max8997 driver
private data are instead. It is tested on TRATS board.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Add irq domain support for max8997 interrupts
Thomas Abraham [Mon, 2 Jul 2012 00:02:55 +0000 (09:02 +0900)]
mfd: Add irq domain support for max8997 interrupts

Add irq domain support for max8997 interrupts. The reverse mapping method
used is linear mapping since the sub-drivers of max8997 such as regulator
and charger drivers can use the max8997 irq_domain to get the linux irq
number for max8997 interrupts. All uses of irq_base in platform data and
max8997 driver private data are removed.

Reviwed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Register ab8500 devices using the newly DT:ed MFD API
Lee Jones [Mon, 2 Jul 2012 15:10:56 +0000 (17:10 +0200)]
mfd: Register ab8500 devices using the newly DT:ed MFD API

Now the MFD API is Device Tree aware we can use it for platform
registration again, even when booting with DT enabled. To aid in
Device Node pointer allocation we provide each cell with the
associative compatible string.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Attaching a node to new 'struct mfd_cell' of_compatible variable
Lee Jones [Mon, 2 Jul 2012 09:50:19 +0000 (10:50 +0100)]
mfd: Attaching a node to new 'struct mfd_cell' of_compatible variable

Applying a succinct description to the of_compatible variable recently
added to the mfd_cell struct. Also link to the documentation page where
more information can be found about compatible properties.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Guard tc3589x PM methods with CONFIG_PM_SLEEP
Axel Lin [Mon, 2 Jul 2012 09:19:52 +0000 (17:19 +0800)]
mfd: Guard tc3589x PM methods with CONFIG_PM_SLEEP

Guard PM methods with CONFIG_PM_SLEEP and get rid of some unneeded #ifdefs.
This fixes below build warnings:

  CC      drivers/mfd/tc3589x.o
drivers/mfd/tc3589x.c:361:12: warning: 'tc3589x_suspend' defined but not used [-Wunused-function]
drivers/mfd/tc3589x.c:375:12: warning: 'tc3589x_resume' defined but not used [-Wunused-function]

SIMPLE_DEV_PM_OPS already defines constant dev_pm_ops, thus also fix
'duplicate const' sparse warning.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Guard adp5520 PM methods with CONFIG_PM_SLEEP
Axel Lin [Mon, 2 Jul 2012 08:53:52 +0000 (16:53 +0800)]
mfd: Guard adp5520 PM methods with CONFIG_PM_SLEEP

This fixes below build warnings:
  CC      drivers/mfd/adp5520.o
drivers/mfd/adp5520.c:324:12: warning: 'adp5520_suspend' defined but not used [-Wunused-function]
drivers/mfd/adp5520.c:333:12: warning: 'adp5520_resume' defined but not used [-Wunused-function]

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Fix mc13xxx-spi merge conflict
Axel Lin [Mon, 2 Jul 2012 08:03:00 +0000 (16:03 +0800)]
mfd: Fix mc13xxx-spi merge conflict

This patch fixes conflict between commit 8ae3559
"mfd: mc13xxx workaround SPI hardware bug on i.Mx"
and commit 10c7a5d "mfd: Use devm_* APIs for mc13xxx".

commit 8ae3559 changes regmap_init_spi to regmap_init.
So now we need to use devm_regmap_init rather than devm_regmap_init_spi.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: USB: Fix the omap-usb EHCI ULPI PHY reset fix issues.
Russ Dill [Thu, 14 Jun 2012 16:24:21 +0000 (09:24 -0700)]
mfd: USB: Fix the omap-usb EHCI ULPI PHY reset fix issues.

'ARM: OMAP3: USB: Fix the EHCI ULPI PHY reset issue' (1fcb57d0) fixes
an issue where the ULPI PHYs were not held in reset while initializing
the EHCI controller. However, it also changes behavior in
omap-usb-host.c omap_usbhs_init by releasing reset while the
configuration in that function was done.

This change caused a regression on BB-xM where USB would not function
if 'usb start' had been run from u-boot before booting. A change was
made to release reset a little bit earlier which fixed the issue on
BB-xM and did not cause any regressions on 3430 sdp, the board for
which the fix was originally made.

This new fix, 'USB: EHCI: OMAP: Finish ehci omap phy reset cycle
before adding hcd.', (3aa2ae74) caused a regression on OMAP5.

The original fix to hold the EHCI controller in reset during
initialization was correct, however it appears that changing
omap_usbhs_init to not hold the PHYs in reset during it's
configuration was incorrect. This patch first reverts both fixes, and
then changes ehci_hcd_omap_probe in ehci-omap.c to hold the PHYs in
reset as the original patch had done. It also is sure to incorporate
the _cansleep change that has been made in the meantime.

I've tested this on Beagleboard xM, I'd really like to get an ack from
the 3430 sdp and OMAP5 guys before getting this merged.

v3 - Brown paper bag its too early in the morning actually run
     git commit amend fix
v2 - Put cansleep gpiolib call outside of spinlock

Acked-by: Mantesh Sarashetti <mantesh@ti.com>
Tested-by: Mantesh Sarashetti <mantesh@ti.com>
Acked-by: Keshava Munegowda <keshava_mgowda@ti.com>
Tested-by: Keshava Munegowda <keshava_mgowda@ti.com>
Signed-off-by: Russ Dill <Russ.Dill@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Use devm allocation for ab3100-core
Linus Walleij [Tue, 12 Jun 2012 18:26:58 +0000 (20:26 +0200)]
mfd: Use devm allocation for ab3100-core

Allocate memory and irq for device state using devm_*
helpers to simplify memory accounting.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Restore wm8994 pin configuration after reset during suspend
Chris Rattray [Mon, 11 Jun 2012 16:43:35 +0000 (00:43 +0800)]
mfd: Restore wm8994 pin configuration after reset during suspend

Ensure that we leave the device with the pins in the expected
configuration if we leave it in reset over suspend, avoiding any
interoperation problems with other devices in the system.

Signed-off-by: Chris Rattray <crattray@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Update twl6040 Kconfig to avoid build breakage
Peter Ujfalusi [Fri, 8 Jun 2012 08:54:21 +0000 (11:54 +0300)]
mfd: Update twl6040 Kconfig to avoid build breakage

twl6040 needs CONFIG_IRQ_DOMAIN to compile, without this we have:
drivers/mfd/twl6040-irq.c: In function 'twl6040_irq_init':
drivers/mfd/twl6040-irq.c:164:2: error: implicit declaration of function 'irq_domain_add_legacy'
drivers/mfd/twl6040-irq.c:165:11: error: 'irq_domain_simple_ops' undeclared (first use in this function)
drivers/mfd/twl6040-irq.c:165:11: note: each undeclared identifier is reported only once for each function it appears in

Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Fix max77693 irq leak and wrong kfree call
Axel Lin [Fri, 8 Jun 2012 00:35:37 +0000 (08:35 +0800)]
mfd: Fix max77693 irq leak and wrong kfree call

We need to call max77693_irq_exit() in max77693_i2c_probe error patch and
max77693_i2c_remove.

Current code already uses devm_kzalloc() to allocate memory for max77693.
Thus we should not call kfree(max77693), otherwise we got double free.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Delete ab5500-core.h
Paul Bolle [Wed, 6 Jun 2012 21:25:11 +0000 (23:25 +0200)]
mfd: Delete ab5500-core.h

Commit 72fb92200d6c31b9982c06784e4bcff2f5b7d8b6 ("mfd/ab5500: delete
AB5500 support") deleted all files that used ab5500-core.h. That file
apparently was simply overlooked. Delete it too.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Staticise max77693 pm_ops
Mark Brown [Tue, 5 Jun 2012 15:15:59 +0000 (16:15 +0100)]
mfd: Staticise max77693 pm_ops

They're not referenced outside this file.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Transfer rtc max8925 irq from MFD defined resources
Haojian Zhuang [Tue, 5 Jun 2012 10:08:50 +0000 (18:08 +0800)]
mfd: Transfer rtc max8925 irq from MFD defined resources

MAX8925 rtc irq is transfered from mfd resources now.

Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Add missing max8997 static storage class specifier
Sachin Kamat [Mon, 4 Jun 2012 11:09:07 +0000 (16:39 +0530)]
mfd: Add missing max8997 static storage class specifier

Fixes the following sparse warnings:
drivers/mfd/max8997.c:209:4: warning: symbol 'max8997_dumpaddr_pmic' was not declared. Should it be static?
drivers/mfd/max8997.c:334:4: warning: symbol 'max8997_dumpaddr_muic' was not declared. Should it be static?
drivers/mfd/max8997.c:344:4: warning: symbol 'max8997_dumpaddr_haptic' was not declared. Should it be static?
drivers/mfd/max8997.c:426:25: warning: symbol 'max8997_pm' was not declared. Should it be static?

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Print ab8500 switch off cause
Jonas Aaberg [Fri, 29 Jun 2012 15:46:12 +0000 (17:46 +0200)]
mfd: Print ab8500 switch off cause

Instead of just printing the register value, also output some
description of the value.

Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Reviewed-by: Mattias Wallin <mattias.wallin@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Update db8500-prmcu hostport_access enable
Arun Murthy [Mon, 21 May 2012 08:58:21 +0000 (14:28 +0530)]
mfd: Update db8500-prmcu hostport_access enable

Force the Modem wakeup by asserting the CaWakeReq signal before the
hostaccess_req/ack ping-pong sequence. The Awake_req signal is de-asserted
asserted at the same time than the hostaccess_req. Return error on failure
case so that the client using this can take appropiate steps.

Signed-off-by: Arun Murthy <arun.murthy@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Remove custom wm8350 cache implementation
Mark Brown [Sun, 3 Jun 2012 12:37:24 +0000 (13:37 +0100)]
mfd: Remove custom wm8350 cache implementation

Since none of the users now reference the cache directly we can happily
remove the custom cache code and rely on the regmap cache.

For simplicity we don't bother with the register defaults tables but
instead read the defaults from the device - regmap is capable of doing
this, unlike our old cache infrastructure. This saves a lot of code and
allows us to cache the device revision information too.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Rely on regmap cache in wm8350 interrupt controller
Mark Brown [Sun, 3 Jun 2012 12:37:23 +0000 (13:37 +0100)]
mfd: Rely on regmap cache in wm8350 interrupt controller

We can just use regmap_update_bits() to achieve the same effect - it will
do the read/modify/update cycle for us.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Add regmap cache support for wm8350
Mark Brown [Sun, 3 Jun 2012 12:37:22 +0000 (13:37 +0100)]
mfd: Add regmap cache support for wm8350

Use the most simple possible transformation on the existing code so keep
the table sitting around, further patches in this series will delete the
existing cache code - the main purpose of this patch is to ensure that
we always have a cache for bisection.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Support for user defined wm8994 irq flags
Mark Brown [Fri, 1 Jun 2012 15:33:19 +0000 (16:33 +0100)]
mfd: Support for user defined wm8994 irq flags

Signed-off-by: Chris Rattray <crattray@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Register the ab8500 from db8500-prcmu using the MFD API
Lee Jones [Fri, 29 Jun 2012 15:13:35 +0000 (17:13 +0200)]
mfd: Register the ab8500 from db8500-prcmu using the MFD API

Hierarchically, the AB8500 is a child of the DB8500 PRCMU. So now that
Device Tree is being used and MFD core code is Device Tree aware, we
can simply register DB8500 PRCMU from Device Tree in the normal way
then allow the DB8500 PRCMU driver to register the AB8500 as a simple
MFD device at probe time.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Register db8500-prcmu devices using the newly DT:ed MFD API
Lee Jones [Wed, 20 Jun 2012 12:56:41 +0000 (13:56 +0100)]
mfd: Register db8500-prcmu devices using the newly DT:ed MFD API

Now the MFD API is Device Tree aware we can use it for platform
registration again, even when booting with DT enabled. To aid in
Device Node pointer allocation we provide each cell with the
associative compatible string.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Initialise the AB8500 driver at core_initcall time
Lee Jones [Mon, 11 Jun 2012 15:25:00 +0000 (16:25 +0100)]
mfd: Initialise the AB8500 driver at core_initcall time

The AB8500 is soon to have its own IRQ domain. For this to be useful
the driver needs to be initialised earlier in the boot sequence. Here
we move initialisation forward from arch_initcall to core_initcall time.

Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Initialise the DB8500 PRCMU driver at core_initcall time
Lee Jones [Mon, 11 Jun 2012 15:24:59 +0000 (16:24 +0100)]
mfd: Initialise the DB8500 PRCMU driver at core_initcall time

Now the AB8500 has its own IRQ domain it needs to be initialised earlier
in the boot sequence. As the AB8500 relies on the DB8500 PRCMU we need to
reflect this change for the PRCMU driver too.

Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Make MFD core code Device Tree and IRQ domain aware
Lee Jones [Fri, 29 Jun 2012 17:01:03 +0000 (19:01 +0200)]
mfd: Make MFD core code Device Tree and IRQ domain aware

During Device Tree enablement of the ab8500 and db8500-prcmu drivers,
a decision was made to omit registration through the MFD API and use
Device Tree directly. However, because MFD devices have a different
address space and the ab8500 and db8500 both use I2C to communicate,
this causes issues with address translation during execution of
of_platform_populate(). So the solution is to make the MFD core aware
of Device Tree and have it assign the correct node pointers instead.

To make this work the MFD core also needs to be awere of IRQ domains,
as Device Tree insists on IRQ domain compatibility. So, instead of
providing an irq-base via platform code, in the DT case we simply
look up the IRQ domain and map to the correct virtual IRQ.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Generically describe interactions with the DB8500 PRCMU
Lee Jones [Wed, 20 Jun 2012 12:56:38 +0000 (13:56 +0100)]
mfd: Generically describe interactions with the DB8500 PRCMU

There is only one method used to communicate with the DB8500 PRCMU, via I2C.
Now this can be assumed, there is no requirement to specify the protocol in
the function name. This patch removes protocol specifics and uses a more
generic naming convention.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Add IRQ domain support for the AB8500
Lee Jones [Wed, 20 Jun 2012 12:56:37 +0000 (13:56 +0100)]
mfd: Add IRQ domain support for the AB8500

As the AB8500 is an IRQ controller in its own right, here we provide
the AB8500 driver with IRQ domain support. This is required if we wish
to reference any of its IRQs from a platform's Device Tree.

Cc: Naga Radheshy <naga.radheshy@stericsson.com>
Cc: Mattias Wallin <mattias.wallin@stericsson.com>
Cc: Daniel Willerud <daniel.willerud@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Enable DT probing of the DB8500 PRCMU
Lee Jones [Fri, 29 Jun 2012 13:41:38 +0000 (15:41 +0200)]
mfd: Enable DT probing of the DB8500 PRCMU

This patch adds the correct compatible string for use during Device Tree
population. Without it the DB8500 PRCMU will not be probed.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Remove redundant AB8500_I2C_CORE Kconfig entry
Lee Jones [Wed, 30 May 2012 04:47:36 +0000 (12:47 +0800)]
mfd: Remove redundant AB8500_I2C_CORE Kconfig entry

During ab8500-core clean-up the Kconfig entry for AB8500_I2C_CORE
was left remnant. This patch simply removes it.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Enable IRQF_ONESHOT when requesting a threaded IRQ for ab8500gpadc
Lee Jones [Wed, 30 May 2012 04:47:34 +0000 (12:47 +0800)]
mfd: Enable IRQF_ONESHOT when requesting a threaded IRQ for ab8500gpadc

The kernel now forces IRQs to be ONESHOT if no IRQ handler is passed.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Use devm_* APIs for mc13xxx
Axel Lin [Fri, 29 Jun 2012 13:14:36 +0000 (15:14 +0200)]
mfd: Use devm_* APIs for mc13xxx

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: mc13xxx workaround SPI hardware bug on i.Mx
Philippe Rétornaz [Tue, 29 May 2012 09:06:29 +0000 (11:06 +0200)]
mfd: mc13xxx workaround SPI hardware bug on i.Mx

The MC13xxx PMIC is mainly used on i.Mx SoC. On those SoC the SPI
hardware will deassert CS line as soon as the SPI FIFO is empty.
The MC13xxx hardware is very sensitive to CS line change as it
corrupts the transfer if CS is deasserted in the middle of a register
read or write.
It is not possible to use the CS line as a GPIO on some SoC, so we
need to workaround this by implementing a single SPI transfer to
access the PMIC.

Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Marc Reilly <marc@cpdesign.com.au>
Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Fix mc13xxx SPI regmap
Philippe Rétornaz [Tue, 29 May 2012 09:06:28 +0000 (11:06 +0200)]
mfd: Fix mc13xxx SPI regmap

This fix the SPI regmap configuration, the wrong write flag was used.
Also, bits_per_word should not be set as the regmap spi implementation
uses a 8bits transfert granularity.

Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Tested-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Remove unused max77693 iolock mutex
Axel Lin [Thu, 24 May 2012 08:57:46 +0000 (16:57 +0800)]
mfd: Remove unused max77693 iolock mutex

Now this driver is using regmap APIs, the iolock mutex is not used and can be
removed.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Remove unused variable from da9052_device_init
Krzysztof Wilczynski [Fri, 29 Jun 2012 11:14:15 +0000 (13:14 +0200)]
mfd: Remove unused variable from da9052_device_init

This is to address the following warning during compilation time:

  drivers/mfd/da9052-core.c: In function ‘da9052_device_init’:
  drivers/mfd/da9052-core.c:646: warning: unused variable ‘desc’

This variable is indeed no longer in use (change can be traced back
to commit: 8614419451d88bf99fff7f5e468fe45f8450891e).

Signed-off-by: Krzysztof Wilczynski <krzysztof.wilczynski@linux.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Add terminating entry for i2c_device_id palmas table
Axel Lin [Mon, 21 May 2012 15:33:22 +0000 (23:33 +0800)]
mfd: Add terminating entry for i2c_device_id palmas table

The i2c_device_id table is supposed to be zero-terminated.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agomfd: Add Maxim 77686 driver
Jonghwa Lee [Mon, 25 Jun 2012 08:34:36 +0000 (10:34 +0200)]
mfd: Add Maxim 77686 driver

This patch is device driver for MAX77686 chip.
MAX77686 is PMIC and includes regulator and rtc on it.
This driver is core of MAX77686 chip, so provides common support for
accessing on-chip devices. It uses irq_domain to manage irq and regmap
to read/write data to its register with i2c bus.

Signed-off-by: Chiwoong Byun <woong.byun@samsung.com>
Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
12 years agoLinux 3.5-rc6
Linus Torvalds [Sun, 8 Jul 2012 00:23:56 +0000 (17:23 -0700)]
Linux 3.5-rc6

12 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Sun, 8 Jul 2012 00:21:59 +0000 (17:21 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/linux-security

Pull security docs update from James Morris.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  security: Minor improvements to no_new_privs documentation

12 years agovfs: make O_PATH file descriptors usable for 'fchdir()'
Linus Torvalds [Sat, 7 Jul 2012 17:17:00 +0000 (10:17 -0700)]
vfs: make O_PATH file descriptors usable for 'fchdir()'

We already use them for openat() and friends, but fchdir() also wants to
be able to use O_PATH file descriptors.  This should make it comparable
to the O_SEARCH of Solaris.  In particular, O_PATH allows you to access
(not-quite-open) a directory you don't have read persmission to, only
execute permission.

Noticed during development of multithread support for ksh93.

Reported-by: ольга крыжановская <olga.kryzhanovska@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: stable@kernel.org # O_PATH introduced in 3.0+
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Linus Torvalds [Sat, 7 Jul 2012 18:20:59 +0000 (11:20 -0700)]
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm

Pull ARM fixes from Russell King:
 "Last merge window, we had some updates from Al cleaning up the signal
  restart handling.  These have caused some problems on ARM, and while
  Al has some fixes, we have some concerns with Al's patches but we've
  been unsuccesful with discussing this.

  We have got to the point where we need to do something, and we've
  decided that the best solution is to revert the appropriate commits
  until Al is able to reply to us.

  Also included here are four patches to fix warnings that I've noticed
  in my build system, and one fix for kprobes test code."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: fix warning caused by wrongly typed arm_dma_limit
  ARM: fix warnings about atomic64_read
  ARM: 7440/1: kprobes: only test 'sub pc, pc, #1b-2b+8-2' on ARMv6
  ARM: 7441/1: perf: return -EOPNOTSUPP if requested mode exclusion is unavailable
  ARM: 7443/1: Revert "new way of handling ERESTART_RESTARTBLOCK"
  ARM: 7442/1: Revert "remove unused restart trampoline"
  ARM: fix set_domain() macro
  ARM: fix mach-versatile/pci.c warning

12 years agosecurity: Minor improvements to no_new_privs documentation
Andy Lutomirski [Thu, 5 Jul 2012 18:23:24 +0000 (11:23 -0700)]
security: Minor improvements to no_new_privs documentation

The documentation didn't actually mention how to enable no_new_privs.
This also adds a note about possible interactions between
no_new_privs and LSMs (i.e. why teaching systemd to set no_new_privs
is not necessarily a good idea), and it references the new docs
from include/linux/prctl.h.

Suggested-by: Rob Landley <rob@landley.net>
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: James Morris <james.l.morris@oracle.com>
12 years agoMerge tag 'ecryptfs-3.5-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 6 Jul 2012 22:32:18 +0000 (15:32 -0700)]
Merge tag 'ecryptfs-3.5-rc6-fixes' of git://git./linux/kernel/git/tyhicks/ecryptfs

Pull eCryptfs fixes from Tyler Hicks:
 "Fixes an incorrect access mode check when preparing to open a file in
  the lower filesystem.  This isn't an urgent fix, but it is simple and
  the check was obviously incorrect.

  Also fixes a couple important bugs in the eCryptfs miscdev interface.
  These changes are low risk due to the small number of users that use
  the miscdev interface.  I was able to keep the changes minimal and I
  have some cleaner, more complete changes queued up for the next merge
  window that will build on these patches."

* tag 'ecryptfs-3.5-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs:
  eCryptfs: Gracefully refuse miscdev file ops on inherited/passed files
  eCryptfs: Fix lockdep warning in miscdev operations
  eCryptfs: Properly check for O_RDONLY flag before doing privileged open

12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Linus Torvalds [Fri, 6 Jul 2012 20:59:50 +0000 (13:59 -0700)]
Merge git://git./linux/kernel/git/nab/target-pending

Pull target fixes from Nicholas Bellinger:
 "Two minor target fixes.  There is really nothing exciting and/or
  controversial this time around.

  There's one fix from MDR for a RCU debug warning message within tcm_fc
  code (CC'ed to stable), and a small AC fix for qla_target.c based upon
  a recent Coverity static report.

  Also, there is one other outstanding virtio-scsi LUN scanning bugfix
  that has been uncovered with the in-flight tcm_vhost driver over the
  last days, and that needs to make it into 3.5 final too.  This patch
  has been posted to linux-scsi again here:

    http://marc.info/?l=linux-scsi&m=134160609212542&w=2

  and I've asked James to include it in his next PULL request."

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  qla2xxx: print the right array elements in qlt_async_event
  tcm_fc: Resolve suspicious RCU usage warnings

12 years agoeCryptfs: Gracefully refuse miscdev file ops on inherited/passed files
Tyler Hicks [Mon, 11 Jun 2012 16:24:11 +0000 (09:24 -0700)]
eCryptfs: Gracefully refuse miscdev file ops on inherited/passed files

File operations on /dev/ecryptfs would BUG() when the operations were
performed by processes other than the process that originally opened the
file. This could happen with open files inherited after fork() or file
descriptors passed through IPC mechanisms. Rather than calling BUG(), an
error code can be safely returned in most situations.

In ecryptfs_miscdev_release(), eCryptfs still needs to handle the
release even if the last file reference is being held by a process that
didn't originally open the file. ecryptfs_find_daemon_by_euid() will not
be successful, so a pointer to the daemon is stored in the file's
private_data. The private_data pointer is initialized when the miscdev
file is opened and only used when the file is released.

https://launchpad.net/bugs/994247

Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Reported-by: Sasha Levin <levinsasha928@gmail.com>
Tested-by: Sasha Levin <levinsasha928@gmail.com>
12 years agoqla2xxx: print the right array elements in qlt_async_event
Alan Cox [Wed, 4 Jul 2012 15:35:35 +0000 (16:35 +0100)]
qla2xxx: print the right array elements in qlt_async_event

Based upon Alan's patch from Coverity scan id 793583, these debug
messages in qlt_async_event() should be starting from byte 0, which is
always the Asynchronous Event Status Code from the parent switch statement.

Also, rename reason_code -> login_code following the language used in
2500 FW spec for Port Database Changed (0x8014) -> Port Database Changed
Event Mailbox Register for mailbox[2].

Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: Chad Dupuis <chad.dupuis@qlogic.com>
Cc: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
12 years agotcm_fc: Resolve suspicious RCU usage warnings
Mark Rustad [Tue, 26 Jun 2012 22:57:30 +0000 (15:57 -0700)]
tcm_fc: Resolve suspicious RCU usage warnings

Use rcu_dereference_protected to tell rcu that the ft_lport_lock
is held during ft_lport_create. This resolved "suspicious RCU usage"
warnings when debugging options are turned on.

Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
12 years agoMerge tag 'for-linus-20120706' of git://git.infradead.org/linux-mtd
Linus Torvalds [Fri, 6 Jul 2012 17:34:48 +0000 (10:34 -0700)]
Merge tag 'for-linus-20120706' of git://git.infradead.org/linux-mtd

Pull two MTD fixes from David Woodhouse:
 - Fix a logic error in OLPC CAFÉ NAND ready() function.
 - Fix regression due to bitflip handling changes.

* tag 'for-linus-20120706' of git://git.infradead.org/linux-mtd:
  mtd: cafe_nand: fix an & vs | mistake
  mtd: nand: initialize bitflip_threshold prior to BBT scanning

12 years agomm: Hold a file reference in madvise_remove
Andy Lutomirski [Thu, 5 Jul 2012 23:00:11 +0000 (16:00 -0700)]
mm: Hold a file reference in madvise_remove

Otherwise the code races with munmap (causing a use-after-free
of the vma) or with close (causing a use-after-free of the struct
file).

The bug was introduced by commit 90ed52ebe481 ("[PATCH] holepunch: fix
mmap_sem i_mutex deadlock")

Cc: Hugh Dickins <hugh@veritas.com>
Cc: Miklos Szeredi <mszeredi@suse.cz>
Cc: Badari Pulavarty <pbadari@us.ibm.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: stable@vger.kernel.org
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2
Linus Torvalds [Fri, 6 Jul 2012 17:04:39 +0000 (10:04 -0700)]
Merge branch 'fixes' of git://git./linux/kernel/git/jlbec/ocfs2

Pull ocfs2 fixes from Joel Becker.

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2:
  aio: make kiocb->private NUll in init_sync_kiocb()
  ocfs2: Fix bogus error message from ocfs2_global_read_info
  ocfs2: for SEEK_DATA/SEEK_HOLE, return internal error unchanged if ocfs2_get_clusters_nocache() or ocfs2_inode_lock() call failed.
  ocfs2: use spinlock irqsave for downconvert lock.patch
  ocfs2: Misplaced parens in unlikley
  ocfs2: clear unaligned io flag when dio fails

12 years agoMerge git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Fri, 6 Jul 2012 17:02:12 +0000 (10:02 -0700)]
Merge git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French.

* git://git.samba.org/sfrench/cifs-2.6:
  cifs: when server doesn't set CAP_LARGE_READ_X, cap default rsize at MaxBufferSize
  cifs: fix parsing of password mount option

12 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Fri, 6 Jul 2012 16:50:39 +0000 (09:50 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

Pull input layer fixes from Dmitry Torokhov:
 "Two fixes for regressions in Wacom driver and fixes for drivers using
  threaded IRQ framework without specifying IRQF_ONESHOT."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: request threaded-only IRQs with IRQF_ONESHOT
  Input: wacom - don't retrieve touch_max when it is predefined
  Input: wacom - fix retrieving touch_max bug
  Input: fix input.h kernel-doc warning

12 years agomtd: cafe_nand: fix an & vs | mistake
Dan Carpenter [Sat, 9 Jun 2012 16:08:25 +0000 (19:08 +0300)]
mtd: cafe_nand: fix an & vs | mistake

The intent here was clearly to set result to true if the 0x40000000 flag
was set.  But instead there was a | vs & typo and we always set result
to true.

Artem: check the spec at
wiki.laptop.org/images/5/5c/88ALP01_Datasheet_July_2007.pdf
and this fix looks correct.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agoMerge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Thu, 5 Jul 2012 20:20:02 +0000 (13:20 -0700)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "Small fixes on multiple ARM platforms
   - A build regression from a previous fix on dove and mv78xx0
   - Two fixes for recently (3.5-rc1) changed mmp/pxa code
   - multiple omap2+ bug fixes
   - two trivial fixes for i.MX
   - one v3.5 regression for mxs"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: apx4devkit: fix FEC enabling PHY clock
  ARM: OMAP2+: hwmod data: Fix wrong McBSP clock alias on OMAP4
  ARM: OMAP4: hwmod data: temporarily comment out data for the usb_host_fs and aess IP blocks
  ARM: Orion: Fix WDT compile for Dove and MV78xx0
  ARM: mmp: remove mach/gpio-pxa.h
  ARM: imx: assert SCC gate stays enabled
  ARM: OMAP4: TWL6030: ensure sys_nirq1 is mux'd and wakeup enabled
  ARM: OMAP2: Overo: init I2C before MMC to fix MMC suspend/resume failure
  ARM: imx27_visstrim_m10: Do not include <asm/system.h>
  ARM: pxa: hx4700: Fix basic suspend/resume

12 years agoMerge git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Thu, 5 Jul 2012 20:16:21 +0000 (13:16 -0700)]
Merge git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fix from Marcelo Tosatti:
 "Memory leak and oops on the x86 mmu code, and sanitization of the
  KVM_IRQFD ioctl."

* git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: MMU: fix shrinking page from the empty mmu
  KVM: fix fault page leak
  KVM: Sanitize KVM_IRQFD flags
  KVM: Add missing KVM_IRQFD API documentation
  KVM: Pass kvm_irqfd to functions

12 years agoMerge branch 'fixes-for-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/coolone...
Linus Torvalds [Thu, 5 Jul 2012 20:09:37 +0000 (13:09 -0700)]
Merge branch 'fixes-for-3.5' of git://git./linux/kernel/git/cooloney/linux-leds

Pull leds fix from Bryan Wu:
 "Fix for heartbeat led trigger driver"

* 'fixes-for-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds:
  leds: heartbeat: fix bug on panic

12 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...
Linus Torvalds [Thu, 5 Jul 2012 20:06:25 +0000 (13:06 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mason/linux-btrfs

Pull btrfs updates from Chris Mason:
 "I held off on my rc5 pull because I hit an oops during log recovery
  after a crash.  I wanted to make sure it wasn't a regression because
  we have some logging fixes in here.

  It turns out that a commit during the merge window just made it much
  more likely to trigger directory logging instead of full commits,
  which exposed an old bug.

  The new backref walking code got some additional fixes.  This should
  be the final set of them.

  Josef fixed up a corner where our O_DIRECT writes and buffered reads
  could expose old file contents (not stale, just not the most recent).
  He and Liu Bo fixed crashes during tree log recover as well.

  Ilya fixed errors while we resume disk balancing operations on
  readonly mounts."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: run delayed directory updates during log replay
  Btrfs: hold a ref on the inode during writepages
  Btrfs: fix tree log remove space corner case
  Btrfs: fix wrong check during log recovery
  Btrfs: use _IOR for BTRFS_IOC_SUBVOL_GETFLAGS
  Btrfs: resume balance on rw (re)mounts properly
  Btrfs: restore restriper state on all mounts
  Btrfs: fix dio write vs buffered read race
  Btrfs: don't count I/O statistic read errors for missing devices
  Btrfs: resolve tree mod log locking issue in btrfs_next_leaf
  Btrfs: fix tree mod log rewind of ADD operations
  Btrfs: leave critical region in btrfs_find_all_roots as soon as possible
  Btrfs: always put insert_ptr modifications into the tree mod log
  Btrfs: fix tree mod log for root replacements at leaf level
  Btrfs: support root level changes in __resolve_indirect_ref
  Btrfs: avoid waiting for delayed refs when we must not

12 years agoMerge branch 'fixes-for-grant' of git://sources.calxeda.com/kernel/linux
Linus Torvalds [Thu, 5 Jul 2012 18:53:47 +0000 (11:53 -0700)]
Merge branch 'fixes-for-grant' of git://sources.calxeda.com/kernel/linux

Pull DT fixes from Rob Herring:
 "Mainly some documentation updates and 2 fixes:

   - An export symbol fix for of_platform_populate from Stephen W.
   - A fix for the order compatible entries are matched to ensure the
     first compatible string is matched when there are multiple matches."

Normally these would go through Grant Likely (thus the "fixes-for-grant"
branch name), but Grant is in the middle of moving to Scotland, and is
practically offline until sometime in August. So pull directly from Rob.

* 'fixes-for-grant' of git://sources.calxeda.com/kernel/linux:
  of: match by compatible property first
  dt: mc13xxx.txt: Fix gpio number assignment
  dt: fsl-fec.txt: Fix gpio number assignment
  dt: fsl-mma8450.txt: Add missing 'reg' description
  dt: fsl-imx-esdhc.txt: Fix gpio number assignment
  dt: fsl-imx-cspi.txt: Fix comment about GPIOs used for chip selects
  of: Add Avionic Design vendor prefix
  of: export of_platform_populate()

12 years agoARM: fix warning caused by wrongly typed arm_dma_limit
Russell King [Thu, 5 Jul 2012 12:11:31 +0000 (13:11 +0100)]
ARM: fix warning caused by wrongly typed arm_dma_limit

arch/arm/mm/init.c: In function 'arm_memblock_init':
arch/arm/mm/init.c:380: warning: comparison of distinct pointer types lacks a cast

by fixing the typecast in its definition when DMA_ZONE is disabled.
This was missed in 4986e5c7c (ARM: mm: fix type of the arm_dma_limit
global variable).

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: fix warnings about atomic64_read
Russell King [Thu, 5 Jul 2012 12:06:32 +0000 (13:06 +0100)]
ARM: fix warnings about atomic64_read

Fix:
net/netfilter/xt_connbytes.c: In function 'connbytes_mt':
net/netfilter/xt_connbytes.c:43: warning: passing argument 1 of 'atomic64_read' discards qualifiers from pointer target type
...

by adding the missing const.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7440/1: kprobes: only test 'sub pc, pc, #1b-2b+8-2' on ARMv6
Rabin Vincent [Wed, 4 Jul 2012 06:37:37 +0000 (07:37 +0100)]
ARM: 7440/1: kprobes: only test 'sub pc, pc, #1b-2b+8-2' on ARMv6

'sub pc, pc, #1b-2b+8-2' results in address<1:0> == '10'.

sub pc, pc, #const (== ADR pc, #const) performs an interworking branch
(BXWritePC()) on ARMv7+ and a simple branch (BranchWritePC()) on earlier
versions.

In ARM state, BXWritePC() is UNPREDICTABLE when address<1:0> == '10'.

In ARM state on ARMv6+, BranchWritePC() ignores address<1:0>.  Before
ARMv6, BranchWritePC() is UNPREDICTABLE if address<1:0> != '00'

So the instruction is UNPREDICTABLE both before and after v6.

Acked-by: Jon Medhurst <tixy@yxit.co.uk>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoMerge tag 'omap-fixes-for-v3.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel...
Arnd Bergmann [Thu, 5 Jul 2012 10:16:13 +0000 (12:16 +0200)]
Merge tag 'omap-fixes-for-v3.5-rc5' of git://git./linux/kernel/git/tmlind/linux-omap into fixes

PM related fixes for omaps mostly to get suspend/resume
working again.

* tag 'omap-fixes-for-v3.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: hwmod data: Fix wrong McBSP clock alias on OMAP4
  ARM: OMAP4: hwmod data: temporarily comment out data for the usb_host_fs and aess IP blocks
  ARM: OMAP4: TWL6030: ensure sys_nirq1 is mux'd and wakeup enabled
  ARM: OMAP2: Overo: init I2C before MMC to fix MMC suspend/resume failure

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
12 years agoMerge branch 'mxs/fixes-for-3.5' of git://git.linaro.org/people/shawnguo/linux-2...
Arnd Bergmann [Thu, 5 Jul 2012 09:06:36 +0000 (11:06 +0200)]
Merge branch 'mxs/fixes-for-3.5' of git://git.linaro.org/people/shawnguo/linux-2.6 into fixes

* 'mxs/fixes-for-3.5' of git://git.linaro.org/people/shawnguo/linux-2.6:
  ARM: apx4devkit: fix FEC enabling PHY clock

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
12 years agoARM: 7441/1: perf: return -EOPNOTSUPP if requested mode exclusion is unavailable
Will Deacon [Wed, 4 Jul 2012 17:15:42 +0000 (18:15 +0100)]
ARM: 7441/1: perf: return -EOPNOTSUPP if requested mode exclusion is unavailable

We currently return -EPERM if the user requests mode exclusion that is
not supported by the CPU. This looks pretty confusing from userspace
and is inconsistent with other architectures (ppc, x86).

This patch returns -EOPNOTSUPP instead.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7443/1: Revert "new way of handling ERESTART_RESTARTBLOCK"
Will Deacon [Wed, 4 Jul 2012 17:17:16 +0000 (18:17 +0100)]
ARM: 7443/1: Revert "new way of handling ERESTART_RESTARTBLOCK"

This reverts commit 6b5c8045ecc7e726cdaa2a9d9c8e5008050e1252.

Conflicts:

arch/arm/kernel/ptrace.c

The new syscall restarting code can lead to problems if we take an
interrupt in userspace just before restarting the svc instruction. If
a signal is delivered when returning from the interrupt, the
TIF_SYSCALL_RESTARTSYS will remain set and cause any syscalls executed
from the signal handler to be treated as a restart of the previously
interrupted system call. This includes the final sigreturn call, meaning
that we may fail to exit from the signal context. Furthermore, if a
system call made from the signal handler requires a restart via the
restart_block, it is possible to clear the thread flag and fail to
restart the originally interrupted system call.

The right solution to this problem is to perform the restarting in the
kernel, avoiding the possibility of handling a further signal before the
restart is complete. Since we're almost at -rc6, let's revert the new
method for now and aim for in-kernel restarting at a later date.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7442/1: Revert "remove unused restart trampoline"
Will Deacon [Wed, 4 Jul 2012 17:16:30 +0000 (18:16 +0100)]
ARM: 7442/1: Revert "remove unused restart trampoline"

This reverts commit fa18484d0947b976a769d15c83c50617493c81c1.

We need the restart trampoline back so that we can revert a related
problematic patch 6b5c8045ecc7e726cdaa2a9d9c8e5008050e1252 ("arm: new
way of handling ERESTART_RESTARTBLOCK").

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: fix set_domain() macro
Russell King [Wed, 4 Jul 2012 16:05:28 +0000 (17:05 +0100)]
ARM: fix set_domain() macro

Avoid polluting drivers with a set_domain() macro, which interferes with
structure member names:

drivers/net/wireless/ath/ath9k/dfs_pattern_detector.c:294:33: error: macro "set_domain" passed 2 arguments, but takes just 1

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoaio: make kiocb->private NUll in init_sync_kiocb()
Junxiao Bi [Wed, 27 Jun 2012 09:09:54 +0000 (17:09 +0800)]
aio: make kiocb->private NUll in init_sync_kiocb()

Ocfs2 uses kiocb.*private as a flag of unsigned long size. In
commit a11f7e6 ocfs2: serialize unaligned aio, the unaligned
io flag is involved in it to serialize the unaligned aio. As
*private is not initialized in init_sync_kiocb() of do_sync_write(),
this unaligned io flag may be unexpectly set in an aligned dio.
And this will cause OCFS2_I(inode)->ip_unaligned_aio decreased
to -1 in ocfs2_dio_end_io(), thus the following unaligned dio
will hang forever at ocfs2_aiodio_wait() in ocfs2_file_aio_write().

Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Cc: stable@vger.kernel.org
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
12 years agoMerge tag 'omap-fixes-b-for-3.5rc' of git://git.kernel.org/pub/scm/linux/kernel/git...
Tony Lindgren [Thu, 5 Jul 2012 08:12:08 +0000 (01:12 -0700)]
Merge tag 'omap-fixes-b-for-3.5rc' of git://git./linux/kernel/git/pjw/omap-pending into fixes

A few more OMAP fixes for 3.5-rc.  These fix some bugs with power
management and McBSP.

12 years agoARM: apx4devkit: fix FEC enabling PHY clock
Lauri Hintsala [Thu, 5 Jul 2012 07:31:36 +0000 (10:31 +0300)]
ARM: apx4devkit: fix FEC enabling PHY clock

Ethernet stopped to work after mxs clk framework change.

Signed-off-by: Lauri Hintsala <lauri.hintsala@bluegiga.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
12 years agoInput: request threaded-only IRQs with IRQF_ONESHOT
Lars-Peter Clausen [Wed, 4 Jul 2012 20:02:56 +0000 (13:02 -0700)]
Input: request threaded-only IRQs with IRQF_ONESHOT

Since commit 1c6c69525b ("genirq: Reject bogus threaded irq requests")
threaded IRQs without a primary handler need to be requested with
IRQF_ONESHOT, otherwise the request will fail. This patch adds the
IRQF_ONESHOT to input drivers where it is missing. Not modified by
this patch are those drivers where the requested IRQ will always be a
nested IRQ (e.g. because it's part of an MFD), since for this special
case IRQF_ONESHOT is not required to be specified when requesting the
IRQ.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
12 years agoARM: fix mach-versatile/pci.c warning
Russell King [Wed, 4 Jul 2012 16:04:57 +0000 (17:04 +0100)]
ARM: fix mach-versatile/pci.c warning

arch/arm/mach-versatile/pci.c: In function 'versatile_map_irq':
arch/arm/mach-versatile/pci.c:342: warning: unused variable 'devslot'

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: OMAP2+: hwmod data: Fix wrong McBSP clock alias on OMAP4
Benoit Cousson [Wed, 4 Jul 2012 12:55:29 +0000 (06:55 -0600)]
ARM: OMAP2+: hwmod data: Fix wrong McBSP clock alias on OMAP4

The commit 503d0ea24d1d3dd3db95e5e0edd693da7a2a23eb
  ARM: OMAP4: hwmod data: Add aliases for McBSP fclk clocks

added a wrong "prcm_clk" alias for PRCM clock whereas the McBSP
driver and previous OMAPs are using "prcm_fck".

It thus lead to the following warning.

[   47.409729] omap-mcbsp: clks: could not clk_get() prcm_fck

Fix that by changing the opt_clk role to prcm_fck.

Reported-by: Misael Lopez Cruz <misael.lopez@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Sebastien Guiriec <s-guiriec@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
12 years agoARM: OMAP4: hwmod data: temporarily comment out data for the usb_host_fs and aess...
Paul Walmsley [Wed, 4 Jul 2012 12:55:29 +0000 (06:55 -0600)]
ARM: OMAP4: hwmod data: temporarily comment out data for the usb_host_fs and aess IP blocks

The OMAP4 usb_host_fs (OHCI) and AESS IP blocks require some special
programming for them to enter idle.  Without this programming, they
will prevent the rest of the chip from entering full chip idle.

To implement the idle programming cleanly, this will take some
coordination between maintainers.  This is likely to take some time,
so it is probably best to leave this for 3.6 or 3.7.  So, in the
meantime, prevent these IP blocks from being registered.

Later, once the appropriate support is available, this patch can be
reverted.

This second version comments out the IP block data since Benoît didn't
like removing it.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Benoît Cousson <b-cousson@ti.com>
12 years agoMerge branch 'fixes' of git://github.com/hzhuang1/linux into fixes
Arnd Bergmann [Wed, 4 Jul 2012 11:49:58 +0000 (13:49 +0200)]
Merge branch 'fixes' of git://github.com/hzhuang1/linux into fixes

From Haojian Zhuang <haojian.zhuang@gmail.com>:

* 'fixes' of git://github.com/hzhuang1/linux:
  ARM: mmp: remove mach/gpio-pxa.h

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
12 years agoMerge tag 'v3.5-imx-fixes' of git://git.pengutronix.de/git/imx/linux-2.6 into fixes
Arnd Bergmann [Wed, 4 Jul 2012 11:46:05 +0000 (13:46 +0200)]
Merge tag 'v3.5-imx-fixes' of git://git.pengutronix.de/git/imx/linux-2.6 into fixes

From Sascha Hauer <s.hauer@pengutronix.de>:

ARM i.MX fixes for v3.5-rc5

* tag 'v3.5-imx-fixes' of git://git.pengutronix.de/git/imx/linux-2.6:
  ARM: imx: assert SCC gate stays enabled
  ARM: imx27_visstrim_m10: Do not include <asm/system.h>

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
12 years agoARM: Orion: Fix WDT compile for Dove and MV78xx0
Andrew Lunn [Fri, 29 Jun 2012 07:25:58 +0000 (09:25 +0200)]
ARM: Orion: Fix WDT compile for Dove and MV78xx0

Commit 0fa1f0609a0c1fe8b2be3c0089a2cb48f7fda521 (ARM: Orion: Fix
Virtual/Physical mixup with watchdog) broke the Dove & MV78xx0
build. Although these two SoC don't use the watchdog, the shared
platform code still needs to build. Add the necessary defines.

Cc: stable@vger.kernel.org
Reported-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
12 years agoARM: mmp: remove mach/gpio-pxa.h
Paul Bolle [Mon, 2 Jul 2012 21:40:14 +0000 (23:40 +0200)]
ARM: mmp: remove mach/gpio-pxa.h

Commit 157d2644cb0c1e71a18baaffca56d2b1d0ebf10f ("ARM: pxa: change gpio
to platform device") removed all includes of mach/gpio-pxa.h. It kept
this unused header in the tree. Using it can't work, as it itself
includes the non-existent header plat/gpio-pxa.h. This header can safely
be removed.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
12 years agoleds: heartbeat: fix bug on panic
Alexander Holler [Tue, 3 Jul 2012 06:35:47 +0000 (14:35 +0800)]
leds: heartbeat: fix bug on panic

With commit 49dca5aebfdeadd4bf27b6cb4c60392147dc35a4 I introduced
a bug (visible if CONFIG_PROVE_RCU is enabled) which occures when a panic
has happened:

[ 1526.520230] ===============================
[ 1526.520230] [ INFO: suspicious RCU usage. ]
[ 1526.520230] 3.5.0-rc1+ #12 Not tainted
[ 1526.520230] -------------------------------
[ 1526.520230] /c/kernel-tests/mm/include/linux/rcupdate.h:436 Illegal context switch in RCU read-side critical section!
[ 1526.520230]
[ 1526.520230] other info that might help us debug this:
[ 1526.520230]
[ 1526.520230]
[ 1526.520230] rcu_scheduler_active = 1, debug_locks = 0
[ 1526.520230] 3 locks held by net.agent/3279:
[ 1526.520230]  #0:  (&mm->mmap_sem){++++++}, at: [<ffffffff82f85962>] do_page_fault+0x193/0x390
[ 1526.520230]  #1:  (panic_lock){+.+...}, at: [<ffffffff82ed2830>] panic+0x37/0x1d3
[ 1526.520230]  #2:  (rcu_read_lock){.+.+..}, at: [<ffffffff810b9b28>] rcu_lock_acquire+0x0/0x29
[ 1526.520230]
[ 1526.520230] stack backtrace:
[ 1526.520230] Pid: 3279, comm: net.agent Not tainted 3.5.0-rc1+ #12
[ 1526.520230] Call Trace:
[ 1526.520230]  [<ffffffff810e1570>] lockdep_rcu_suspicious+0x109/0x112
[ 1526.520230]  [<ffffffff810bfe3a>] rcu_preempt_sleep_check+0x45/0x47
[ 1526.520230]  [<ffffffff810bfe5a>] __might_sleep+0x1e/0x19a
[ 1526.520230]  [<ffffffff82f8010e>] down_write+0x26/0x81
[ 1526.520230]  [<ffffffff8276a966>] led_trigger_unregister+0x1f/0x9c
[ 1526.520230]  [<ffffffff8276def5>] heartbeat_reboot_notifier+0x15/0x19
[ 1526.520230]  [<ffffffff82f85bf5>] notifier_call_chain+0x96/0xcd
[ 1526.520230]  [<ffffffff82f85cba>] __atomic_notifier_call_chain+0x8e/0xff
[ 1526.520230]  [<ffffffff81094b7c>] ? kmsg_dump+0x37/0x1eb
[ 1526.520230]  [<ffffffff82f85d3f>] atomic_notifier_call_chain+0x14/0x16
[ 1526.520230]  [<ffffffff82ed28e1>] panic+0xe8/0x1d3
[ 1526.520230]  [<ffffffff811473e2>] out_of_memory+0x15d/0x1d3

So in case of a panic, now just turn of the LED. Other approaches like
scheduling a work to unregister the trigger aren't working because there
isn't much which still runs after a panic occured (except timers).

Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
12 years agoARM: imx: assert SCC gate stays enabled
Uwe Kleine-König [Mon, 2 Jul 2012 09:30:34 +0000 (11:30 +0200)]
ARM: imx: assert SCC gate stays enabled

The SCC clock is needed in internal boot mode and so must keep enabled.
This same issue was fixed for the pre-common-clk code in commit

3d6e614 (mx35: Fix boot ROM hang in internal boot mode)

Cc: John Ogness <jogness@linutronix.de>
Cc: Hans J. Koch <hjk@hansjkoch.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
12 years agoocfs2: Fix bogus error message from ocfs2_global_read_info
Jan Kara [Fri, 10 Feb 2012 09:50:07 +0000 (10:50 +0100)]
ocfs2: Fix bogus error message from ocfs2_global_read_info

'status' variable in ocfs2_global_read_info() is always != 0 when leaving the
function because it happens to contain number of read bytes. Thus we always log
error message although everything is OK. Since all error cases properly call
mlog_errno() before jumping to out_err, there's no reason to call mlog_errno()
on exit at all. This is a fallout of c1e8d35e (conversion of mlog_exit()
calls).

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
12 years agoocfs2: for SEEK_DATA/SEEK_HOLE, return internal error unchanged if ocfs2_get_clusters...
Jeff Liu [Thu, 9 Feb 2012 06:42:22 +0000 (14:42 +0800)]
ocfs2: for SEEK_DATA/SEEK_HOLE, return internal error unchanged if ocfs2_get_clusters_nocache() or ocfs2_inode_lock() call failed.

Hello,

Since ENXIO only means "offset beyond EOF" for SEEK_DATA/SEEK_HOLE,
Hence we should return the internal error unchanged if ocfs2_inode_lock() or
ocfs2_get_clusters_nocache() call failed rather than ENXIO.
Otherwise, it will confuse the user applications when they trying to understand the root cause.

Thanks Dave for pointing this out.

Thanks,
-Jeff

Cc: Dave Chinner <david@fromorbit.com>
Signed-off-by: Jie Liu <jeff.liu@oracle.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
12 years agoocfs2: use spinlock irqsave for downconvert lock.patch
Srinivas Eeda [Tue, 31 Jan 2012 05:51:22 +0000 (21:51 -0800)]
ocfs2: use spinlock irqsave for downconvert lock.patch

When ocfs2dc thread holds dc_task_lock spinlock and receives soft IRQ it
deadlock itself trying to get same spinlock in ocfs2_wake_downconvert_thread.
Below is the stack snippet.

The patch disables interrupts when acquiring dc_task_lock spinlock.

ocfs2_wake_downconvert_thread
ocfs2_rw_unlock
ocfs2_dio_end_io
dio_complete
.....
bio_endio
req_bio_endio
....
scsi_io_completion
blk_done_softirq
__do_softirq
do_softirq
irq_exit
do_IRQ
ocfs2_downconvert_thread
[kthread]

Signed-off-by: Srinivas Eeda <srinivas.eeda@oracle.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
12 years agoocfs2: Misplaced parens in unlikley
roel [Mon, 12 Dec 2011 22:40:51 +0000 (23:40 +0100)]
ocfs2: Misplaced parens in unlikley

Fix misplaced parentheses

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
12 years agoocfs2: clear unaligned io flag when dio fails
Junxiao Bi [Wed, 27 Jun 2012 09:09:55 +0000 (17:09 +0800)]
ocfs2: clear unaligned io flag when dio fails

The unaligned io flag is set in the kiocb when an unaligned
dio is issued, it should be cleared even when the dio fails,
or it may affect the following io which are using the same
kiocb.

Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Joel Becker <jlbec@evilplan.org>
12 years agoMerge tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mturquette/linux
Linus Torvalds [Wed, 4 Jul 2012 01:06:49 +0000 (18:06 -0700)]
Merge tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mturquette/linux

Pull fix to common clk framework from Michael Turquette:
 "The previous set of common clk fixes for -rc5 left an uninitialized
  int which could lead to bad array indexing when switching clock
  parents.  The issue is fixed with a trivial change to the code flow in
  __clk_set_parent."

* tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mturquette/linux:
  clk: fix parent validation in __clk_set_parent()

12 years agoMerge tag 'md-3.5-fixes' of git://neil.brown.name/md
Linus Torvalds [Wed, 4 Jul 2012 01:05:35 +0000 (18:05 -0700)]
Merge tag 'md-3.5-fixes' of git://neil.brown.name/md

Pull raid10 build failure fix from NeilBrown:
 "I really shouldn't do important things late in the day.  It seems that
  I get careless."

* tag 'md-3.5-fixes' of git://neil.brown.name/md:
  md/raid10: fix careless build error

12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Wed, 4 Jul 2012 01:01:54 +0000 (18:01 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking update from David Miller:

 1) Fix RX sequence number handling in mwifiex, from Stone Piao.

 2) Netfilter ipset mis-compares device names, fix from Florian
    Westphal.

 3) Fix route leak in ipv6 IPVS, from Eric Dumazet.

 4) NFS fixes.  Several buffer overflows in NCI layer from Dan
    Rosenberg, and release sock OOPS'er fix from Eric Dumazet.

 5) Fix WEP handling ath9k, we started using a bit the chip provides to
    indicate undecrypted packets but that bit turns out to be unreliable
    in certain configurations.  Fix from Felix Fietkau.

 6) Fix Kconfig dependency bug in wlcore, from Randy Dunlap.

 7) New USB IDs for rtlwifi driver from Larry Finger.

 8) Fix crashes in qmi_wwan usbnet driver when disconnecting, from Bjørn
    Mork.

 9) Gianfar driver programs coalescing settings properly in single queue
    mode, but does not do so in multi-queue mode.  Fix from Claudiu
    Manoil.

10) Missing module.h include in davinci_cpdma.c, from Daniel Mack.

11) Need dummy handler for IPSET_CMD_NONE otherwise we crash in ipset if
    we get this via nfnetlink, fix from Tomasz Bursztyka.

12) Missing RCU unlock in nfnetlink error path, also from Tomasz.

13) Fix divide by zero in igbvf when the user tries to set an RX
    coalescing value of 0 usecs, from Mitch A Williams.

14) We can process SCTP sacks for the wrong transport, oops.  Fix from
    Neil Horman.

15) Remove hw IP payload checksumming from e1000e driver.  This has zery
    value in our stack, and turning it on creates a very unintuitive
    restriction for users when using jumbo MTUs.

    Specifically, when IP payload checksums are on you cannot use both
    receive hashing offload and jumbo MTU.  Fix from Bruce Allan.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (27 commits)
  e1000e: remove use of IP payload checksum
  sctp: be more restrictive in transport selection on bundled sacks
  igbvf: fix divide by zero
  netfilter: nfnetlink: fix missing rcu_read_unlock in nfnetlink_rcv_msg
  netfilter: ipset: fix crash if IPSET_CMD_NONE command is sent
  davinci_cpdma: include linux/module.h
  gianfar: Fix RXICr/TXICr programming for multi-queue mode
  net: Downgrade CAP_SYS_MODULE deprecated message from error to warning.
  net: qmi_wwan: fix Oops while disconnecting
  mwifiex: fix memory leak associated with IE manamgement
  ath9k: fix panic caused by returning a descriptor we have queued for reuse
  mac80211: correct behaviour on unrecognised action frames
  ath9k: enable serialize_regmode for non-PCIE AR9287
  rtlwifi: rtl8192cu: New USB IDs
  NFC: Return from rawsock_release when sk is NULL
  iwlwifi: fix activating inactive stations
  wlcore: drop INET dependency
  ath9k: fix dynamic WEP related regression
  NFC: Prevent multiple buffer overflows in NCI
  netfilter: update location of my trees
  ...

12 years agomd/raid10: fix careless build error
NeilBrown [Tue, 3 Jul 2012 23:35:35 +0000 (09:35 +1000)]
md/raid10: fix careless build error

build error introduced by commit b357f04a67c2aeee8

That function doesn't get extra args until a later patch.  Bother.

Reported-by: Fengguang Wu <wfg@linux.intel.com>
Reported-by: Simon Kirby <sim@hostway.ca>
Reported-by: Tobias Klausmann <tobias.johannes.klausmann@mni.thm.de>
Signed-off-by: NeilBrown <neilb@suse.de>
12 years agoeCryptfs: Fix lockdep warning in miscdev operations
Tyler Hicks [Mon, 11 Jun 2012 17:21:34 +0000 (10:21 -0700)]
eCryptfs: Fix lockdep warning in miscdev operations

Don't grab the daemon mutex while holding the message context mutex.
Addresses this lockdep warning:

 ecryptfsd/2141 is trying to acquire lock:
  (&ecryptfs_msg_ctx_arr[i].mux){+.+.+.}, at: [<ffffffffa029c213>] ecryptfs_miscdev_read+0x143/0x470 [ecryptfs]

 but task is already holding lock:
  (&(*daemon)->mux){+.+...}, at: [<ffffffffa029c2ec>] ecryptfs_miscdev_read+0x21c/0x470 [ecryptfs]

 which lock already depends on the new lock.

 the existing dependency chain (in reverse order) is:

 -> #1 (&(*daemon)->mux){+.+...}:
        [<ffffffff810a3b8d>] lock_acquire+0x9d/0x220
        [<ffffffff8151c6da>] __mutex_lock_common+0x5a/0x4b0
        [<ffffffff8151cc64>] mutex_lock_nested+0x44/0x50
        [<ffffffffa029c5d7>] ecryptfs_send_miscdev+0x97/0x120 [ecryptfs]
        [<ffffffffa029b744>] ecryptfs_send_message+0x134/0x1e0 [ecryptfs]
        [<ffffffffa029a24e>] ecryptfs_generate_key_packet_set+0x2fe/0xa80 [ecryptfs]
        [<ffffffffa02960f8>] ecryptfs_write_metadata+0x108/0x250 [ecryptfs]
        [<ffffffffa0290f80>] ecryptfs_create+0x130/0x250 [ecryptfs]
        [<ffffffff811963a4>] vfs_create+0xb4/0x120
        [<ffffffff81197865>] do_last+0x8c5/0xa10
        [<ffffffff811998f9>] path_openat+0xd9/0x460
        [<ffffffff81199da2>] do_filp_open+0x42/0xa0
        [<ffffffff81187998>] do_sys_open+0xf8/0x1d0
        [<ffffffff81187a91>] sys_open+0x21/0x30
        [<ffffffff81527d69>] system_call_fastpath+0x16/0x1b

 -> #0 (&ecryptfs_msg_ctx_arr[i].mux){+.+.+.}:
        [<ffffffff810a3418>] __lock_acquire+0x1bf8/0x1c50
        [<ffffffff810a3b8d>] lock_acquire+0x9d/0x220
        [<ffffffff8151c6da>] __mutex_lock_common+0x5a/0x4b0
        [<ffffffff8151cc64>] mutex_lock_nested+0x44/0x50
        [<ffffffffa029c213>] ecryptfs_miscdev_read+0x143/0x470 [ecryptfs]
        [<ffffffff811887d3>] vfs_read+0xb3/0x180
        [<ffffffff811888ed>] sys_read+0x4d/0x90
        [<ffffffff81527d69>] system_call_fastpath+0x16/0x1b

Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
12 years agoeCryptfs: Properly check for O_RDONLY flag before doing privileged open
Tyler Hicks [Tue, 12 Jun 2012 18:17:01 +0000 (11:17 -0700)]
eCryptfs: Properly check for O_RDONLY flag before doing privileged open

If the first attempt at opening the lower file read/write fails,
eCryptfs will retry using a privileged kthread. However, the privileged
retry should not happen if the lower file's inode is read-only because a
read/write open will still be unsuccessful.

The check for determining if the open should be retried was intended to
be based on the access mode of the lower file's open flags being
O_RDONLY, but the check was incorrectly performed. This would cause the
open to be retried by the privileged kthread, resulting in a second
failed open of the lower file. This patch corrects the check to
determine if the open request should be handled by the privileged
kthread.

Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
12 years agofloppy: cancel any pending fd_timeouts before adding a new one
Linus Torvalds [Tue, 3 Jul 2012 22:51:22 +0000 (15:51 -0700)]
floppy: cancel any pending fd_timeouts before adding a new one

In commit 070ad7e793dc ("floppy: convert to delayed work and
single-thread wq") the 'fd_timeout' timer was converted to a delayed
work.  However, the "del_timer(&fd_timeout)" was lost in the process,
and any previous pending timeouts would stay active when we then
re-queued the timeout.

This resulted in the floppy probe sequence having a (stale) 20s timeout
rather than the intended 3s timeout, and thus made booting with the
floppy driver (but no actual floppy controller) take much longer than it
should.

Of course, there's little reason for most people to compile the floppy
driver into the kernel at all, which is why most people never noticed.

Canceling the delayed work where we used to do the del_timer() fixes the
issue, and makes the floppy probing use the proper new timeout instead.
The three second timeout is still very wasteful, but better than the 20s
one.

Reported-and-tested-by: Andi Kleen <ak@linux.intel.com>
Reported-and-tested-by: Calvin Walton <calvin.walton@kepstin.ca>
Cc: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-block
Linus Torvalds [Tue, 3 Jul 2012 22:45:10 +0000 (15:45 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block

Pull block bits from Jens Axboe:
 "As vacation is coming up, thought I'd better get rid of my pending
  changes in my for-linus branch for this iteration.  It contains:

   - Two patches for mtip32xx.  Killing a non-compliant sysfs interface
     and moving it to debugfs, where it belongs.

   - A few patches from Asias.  Two legit bug fixes, and one killing an
     interface that is no longer in use.

   - A patch from Jan, making the annoying partition ioctl warning a bit
     less annoying, by restricting it to !CAP_SYS_RAWIO only.

   - Three bug fixes for drbd from Lars Ellenberg.

   - A fix for an old regression for umem, it hasn't really worked since
     the plugging scheme was changed in 3.0.

   - A few fixes from Tejun.

   - A splice fix from Eric Dumazet, fixing an issue with pipe
     resizing."

* 'for-linus' of git://git.kernel.dk/linux-block:
  scsi: Silence unnecessary warnings about ioctl to partition
  block: Drop dead function blk_abort_queue()
  block: Mitigate lock unbalance caused by lock switching
  block: Avoid missed wakeup in request waitqueue
  umem: fix up unplugging
  splice: fix racy pipe->buffers uses
  drbd: fix null pointer dereference with on-congestion policy when diskless
  drbd: fix list corruption by failing but already aborted reads
  drbd: fix access of unallocated pages and kernel panic
  xen/blkfront: Add WARN to deal with misbehaving backends.
  blkcg: drop local variable @q from blkg_destroy()
  mtip32xx: Create debugfs entries for troubleshooting
  mtip32xx: Remove 'registers' and 'flags' from sysfs
  blkcg: fix blkg_alloc() failure path
  block: blkcg_policy_cfq shouldn't be used if !CONFIG_CFQ_GROUP_IOSCHED
  block: fix return value on cfq_init() failure
  mtip32xx: Remove version.h header file inclusion
  xen/blkback: Copy id field when doing BLKIF_DISCARD.

12 years agoKVM: MMU: fix shrinking page from the empty mmu
Xiao Guangrong [Tue, 3 Jul 2012 06:31:43 +0000 (14:31 +0800)]
KVM: MMU: fix shrinking page from the empty mmu

Fix:

 [ 3190.059226] BUG: unable to handle kernel NULL pointer dereference at           (null)
 [ 3190.062224] IP: [<ffffffffa02aac66>] mmu_page_zap_pte+0x10/0xa7 [kvm]
 [ 3190.063760] PGD 104f50067 PUD 112bea067 PMD 0
 [ 3190.065309] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC
 [ 3190.066860] CPU 1
[ ...... ]
 [ 3190.109629] Call Trace:
 [ 3190.111342]  [<ffffffffa02aada6>] kvm_mmu_prepare_zap_page+0xa9/0x1fc [kvm]
 [ 3190.113091]  [<ffffffffa02ab2f5>] mmu_shrink+0x11f/0x1f3 [kvm]
 [ 3190.114844]  [<ffffffffa02ab25d>] ? mmu_shrink+0x87/0x1f3 [kvm]
 [ 3190.116598]  [<ffffffff81150c9d>] ? prune_super+0x142/0x154
 [ 3190.118333]  [<ffffffff8110a4f4>] ? shrink_slab+0x39/0x31e
 [ 3190.120043]  [<ffffffff8110a687>] shrink_slab+0x1cc/0x31e
 [ 3190.121718]  [<ffffffff8110ca1d>] do_try_to_free_pages

This is caused by shrinking page from the empty mmu, although we have
checked n_used_mmu_pages, it is useless since the check is out of mmu-lock

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
12 years agoKVM: fix fault page leak
Xiao Guangrong [Tue, 3 Jul 2012 06:31:01 +0000 (14:31 +0800)]
KVM: fix fault page leak

fault_page is forgot to be freed

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
12 years agoclk: fix parent validation in __clk_set_parent()
Rajendra Nayak [Tue, 3 Jul 2012 06:41:41 +0000 (12:11 +0530)]
clk: fix parent validation in __clk_set_parent()

The below commit introduced a bug in __clk_set_parent()
which could cause it to *skip* the parent validation
which makes sure the parent passed to the api is a valid
one.

    commit 7975059db572eb47f0fb272a62afeae272a4b209
    Author: Rajendra Nayak <rnayak@ti.com>
    Date:   Wed Jun 6 14:41:31 2012 +0530

        clk: Allow late cache allocation for clk->parents

This was identified by the following compiler warning..

    drivers/clk/clk.c: In function '__clk_set_parent':
    drivers/clk/clk.c:1083:5: warning: 'i' may be used uninitialized in this function [-Wuninitialized]

.. as reported by Marc Kleine-Budde.

There were various options discussed on how to fix this, one
being initing 'i' to clk->num_parents, but the below approach
was found to be more appropriate as it also makes the 'parent
validation' code simpler to read.

Reported-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Cc: stable@kernel.org
12 years agoMerge tag 'sound-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Tue, 3 Jul 2012 18:10:18 +0000 (11:10 -0700)]
Merge tag 'sound-3.5' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Just a few driver-specific fixes for ASoC and HD-audio."

* tag 'sound-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Fix no sound from ALC662 after Windows reboot
  ASoC: tlv320aic3x: Fix codec pll configure bug
  ASoC: wm2200: Add missing BCLK rate

12 years agoMerge tag 'dm-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm
Linus Torvalds [Tue, 3 Jul 2012 18:08:16 +0000 (11:08 -0700)]
Merge tag 'dm-3.5-fixes' of git://git./linux/kernel/git/agk/linux-dm

Pull device-mapper fixes from Alasdair G Kergon:
 "Four minor thin provisioning fixes and correct and update dm-verity
  documentation."

* tag 'dm-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm:
  dm: verity fix documentation
  dm persistent data: fix allocation failure in space map checker init
  dm persistent data: handle space map checker creation failure
  dm persistent data: fix shadow_info_leak on dm_tm_destroy
  dm thin: commit metadata before creating metadata snapshot