commit e324ce61ef483dd26d03502d35666ad48a2e1b33 upstream.

If of_get_gpio_flags() returns an error (as in case when GPIO probe is
deferred) the driver would attempt to claim invalid GPIO. It should
propagate the error code up the stack instead so that the probe either
fails or will be retried later (in case of -EPROBE_DEFER).

Reported-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

commit d46329a708c1a3301e272a029266b69339c0877f upstream.

If GPIO probing is deferred, the driver tries to claim an invalid GPIO line
which leads to an error message like this:

  gpio-keys-polled buttons.2: unable to claim gpio 4294966779, err=-22
  gpio-keys-polled: probe of buttons.2 failed with error -22

We should make sure that error code returned by of_get_gpio_flags (including
-EPROBE_DEFER) is propagated up the stack.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This adds a "select" dependency of KEYBOARD_LPC32XX on INPUT_MATRIXKMAP,
as the other drivers are doing in this regard. This fixes the following
compile error if KEYBOARD_LPC32XX is enabled but INPUT_MATRIXKMAP is not:

drivers/input/keyboard/lpc32xx-keys.c:230: undefined reference to
`matrix_keypad_build_keymap'

Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Bootloader can leave interrupt bit pending, and it confuses driver.

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Pull input layer updates from Dmitry Torokhov:
 "2nd round of updates for the input subsystem.  With it input core no
  longer limits number of character devices per event handler (such as
  evdev) to 32, but switches to dynamic minors once legacy range is
  exhausted.  This should get multi-seat installations that currently
  run our of event devices very quickly.

  You will also get an update for Wacom driver and a couple of driver
  fixes."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: extend the number of event (and other) devices
  Input: mousedev - mark mousedev interfaces as non-seekable
  Input: mousedev - rename mixdev_open to opened_by_mixdev
  Input: mousedev - reformat structure initializers
  Input: mousedev - factor out psaux code to reduce #ifdefery
  Input: samsung-keypad - add clk_prepare and clk_unprepare
  Input: atmel_mxt_ts - simplify mxt_dump_message
  Input: wacom - clean up wacom_query_tablet_data
  Input: wacom - introduce wacom_fix_phy_from_hid
  Input: wacom - allow any multi-input Intuos device to set prox
  Input: wacom - report correct touch contact size for I5/Bamboo

Prepare second set of updates for 3.7 merge window (Wacom driver update
and patches extending number of input minors).

Add calls to clk_prepare and clk_unprepare as required by commom clock
framework.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Pull input updates from Dmitry Torokhov:
 "A few drivers were updated with device tree bindings and others got a
  few small cleanups and fixes."

Fix trivial conflict in drivers/input/keyboard/omap-keypad.c due to
changes clashing with a whitespace cleanup.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (28 commits)
  Input: wacom - mark Intuos5 pad as in-prox when touching buttons
  Input: synaptics - adjust threshold for treating position values as negative
  Input: hgpk - use %*ph to dump small buffer
  Input: gpio_keys_polled - fix dt pdata->nbuttons
  Input: Add KD[GS]KBDIACRUC ioctls to the compatible list
  Input: omap-keypad - fixed formatting
  Input: tegra - move platform data header
  Input: wacom - add support for EMR on Cintiq 24HD touch
  Input: s3c2410_ts - make s3c_ts_pmops const
  Input: samsung-keypad - use of_get_child_count() helper
  Input: samsung-keypad - use of_match_ptr()
  Input: uinput - fix formatting
  Input: uinput - specify exact bit sizes on userspace APIs
  Input: uinput - mark failed submission requests as free
  Input: uinput - fix race that can block nonblocking read
  Input: uinput - return -EINVAL when read buffer size is too small
  Input: uinput - take event lock when fetching events from buffer
  Input: get rid of MATCH_BIT() macro
  Input: rotary-encoder - add DT bindings
  Input: rotary-encoder - constify platform data pointers
  ...

Pull workqueue changes from Tejun Heo:
 "This is workqueue updates for v3.7-rc1.  A lot of activities this
  round including considerable API and behavior cleanups.

   * delayed_work combines a timer and a work item.  The handling of the
     timer part has always been a bit clunky leading to confusing
     cancelation API with weird corner-case behaviors.  delayed_work is
     updated to use new IRQ safe timer and cancelation now works as
     expected.

   * Another deficiency of delayed_work was lack of the counterpart of
     mod_timer() which led to cancel+queue combinations or open-coded
     timer+work usages.  mod_delayed_work[_on]() are added.

     These two delayed_work changes make delayed_work provide interface
     and behave like timer which is executed with process context.

   * A work item could be executed concurrently on multiple CPUs, which
     is rather unintuitive and made flush_work() behavior confusing and
     half-broken under certain circumstances.  This problem doesn't
     exist for non-reentrant workqueues.  While non-reentrancy check
     isn't free, the overhead is incurred only when a work item bounces
     across different CPUs and even in simulated pathological scenario
     the overhead isn't too high.

     All workqueues are made non-reentrant.  This removes the
     distinction between flush_[delayed_]work() and
     flush_[delayed_]_work_sync().  The former is now as strong as the
     latter and the specified work item is guaranteed to have finished
     execution of any previous queueing on return.

   * In addition to the various bug fixes, Lai redid and simplified CPU
     hotplug handling significantly.

   * Joonsoo introduced system_highpri_wq and used it during CPU
     hotplug.

  There are two merge commits - one to pull in IRQ safe timer from
  tip/timers/core and the other to pull in CPU hotplug fixes from
  wq/for-3.6-fixes as Lai's hotplug restructuring depended on them."

Fixed a number of trivial conflicts, but the more interesting conflicts
were silent ones where the deprecated interfaces had been used by new
code in the merge window, and thus didn't cause any real data conflicts.

Tejun pointed out a few of them, I fixed a couple more.

* 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: (46 commits)
  workqueue: remove spurious WARN_ON_ONCE(in_irq()) from try_to_grab_pending()
  workqueue: use cwq_set_max_active() helper for workqueue_set_max_active()
  workqueue: introduce cwq_set_max_active() helper for thaw_workqueues()
  workqueue: remove @delayed from cwq_dec_nr_in_flight()
  workqueue: fix possible stall on try_to_grab_pending() of a delayed work item
  workqueue: use hotcpu_notifier() for workqueue_cpu_down_callback()
  workqueue: use __cpuinit instead of __devinit for cpu callbacks
  workqueue: rename manager_mutex to assoc_mutex
  workqueue: WORKER_REBIND is no longer necessary for idle rebinding
  workqueue: WORKER_REBIND is no longer necessary for busy rebinding
  workqueue: reimplement idle worker rebinding
  workqueue: deprecate __cancel_delayed_work()
  workqueue: reimplement cancel_delayed_work() using try_to_grab_pending()
  workqueue: use mod_delayed_work() instead of __cancel + queue
  workqueue: use irqsafe timer for delayed_work
  workqueue: clean up delayed_work initializers and add missing one
  workqueue: make deferrable delayed_work initializer names consistent
  workqueue: cosmetic whitespace updates for macro definitions
  workqueue: deprecate system_nrt[_freezable]_wq
  workqueue: deprecate flush[_delayed]_work_sync()
  ...

Pull ARM soc multiplatform enablement from Olof Johansson:
 "This is a pretty significant branch.  It's the introduction of the
  first multiplatform support on ARM, and with this (and the later
  branch) merged, it is now possible to build one kernel that contains
  support for highbank, vexpress, mvebu, socfpga, and picoxcell.  More
  platforms will be convered over in the next few releases.

  Two critical last things had to be done for this to be practical and
  possible:
   * Today each platform has its own include directory under
     mach-<mach>/include/mach/*, and traditionally that is where a lot
     of driver/platform shared definitions have gone, such as platform
     data structures.  They now need to move out to a common location
     instead, and this branch moves a large number of those out to
     include/linux/platform_data.
   * Each platform used to list the device trees to compile for its
     boards in mach-<mach>/Makefile.boot.

  Both of the above changes will mean that there are some merge
  conflicts to come (and some to resolve here).  It's a one-time move
  and once it settles in, we should be good for quite a while.  Sorry
  for the overhead."

Fix conflicts as per Olof.

* tag 'multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (51 commits)
  ARM: add v7 multi-platform defconfig
  ARM: msm: Move core.h contents into common.h
  ARM: highbank: call highbank_pm_init from .init_machine
  ARM: dtb: move all dtb targets to common Makefile
  ARM: spear: move platform_data definitions
  ARM: samsung: move platform_data definitions
  ARM: orion: move platform_data definitions
  ARM: vexpress: convert to multi-platform
  ARM: initial multiplatform support
  ARM: mvebu: move armada-370-xp.h in mach dir
  ARM: vexpress: remove dependency on mach/* headers
  ARM: picoxcell: remove dependency on mach/* headers
  ARM: move all dtb targets out of Makefile.boot
  ARM: picoxcell: move debug macros to include/debug
  ARM: socfpga: move debug macros to include/debug
  ARM: mvebu: move debug macros to include/debug
  ARM: vexpress: move debug macros to include/debug
  ARM: highbank: move debug macros to include/debug
  ARM: move debug macros to common location
  ARM: make mach/gpio.h headers optional
  ...