cppcheck rightfully says:

drivers/i2c/busses/i2c-viperboard.c:169: style: Variable 'bytes_xfer' is assigned a value that is never used.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Lars Poeschel <poeschel@lemonage.de>

Simplified the probe and remove functions using devm_* functions
Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

IRQ handler has to be register first before IRQ
is enabled in xiic_reinit().
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

Code changes to fix checkpatch warnings listed below.
- WARNING: please, no space before tabs
- WARNING: quoted string split across lines
Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

Document the clock properties required by the at91 i2c bus driver.
Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

Use devm_request_region() to make cleanup paths simpler.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Reviewed-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

Use devm_kzalloc() functions to make cleanup paths simpler.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Lars Poeschel <poeschel@lemonage.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

smatch rightfully says:
drivers/i2c/busses/i2c-imx.c:610 i2c_imx_probe() info: why not propagate 'irq' from platform_get_irq() instead of (-2)?
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

For Exynos4 and Exynos5 SoCs from Samsung the i2c clock is based
on a fixed 66 MHz peripheral clock, and therefore is completely
independent of the cpu frequency.
Thus, registering for a CPU freq notifier is very wasteful.

This patch modifes the code such that, i2c bus registers to
cpu_freq_transition only if CONFIG_CPU_FREQ_S3C24XX is enabled.

This change should save a bunch of cpufreq transitions calls
which does not apply to exynos SoCs.
Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

This patch adds polling mode support for i2c-s3c2410 driver.The
SATA PHY controller's CMU and TRSV block's are of I2C register
map in exynos5250.These blocks can be configured using i2c.

But i2c controller instance on which these block's sits lacks an
interrupt line.Also the current i2c-s3c2410 driver is only interrupt
driven, thus a polling mode support is required in the driver for
supporting this controller. This patch adds this support to the driver.
Signed-off-by: Vasanth Ananthan <vasanth.a@samsung.com>
Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@samsung.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

Hardware supported by the i2c sh_mobile and rcar drivers is only found
on SUPERH or ARCH_SHMOBILE platforms. Restrict non-COMPILE_TEST
compilation to them.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

If a reset GPIO support is specified, request the GPIO and get the chip
out of reset at probe time.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

This simplifies error and removal paths.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

This helps avoiding duplicate includes.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

Tested with a r7s72100 genmai board acessing an eeprom.
Signed-off-by: Wolfram Sang <wsa@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

Pull ARM SoC fixes from Olof Johansson:
 "Another smallish batch of fixes, it's been quiet due to the holidays.
  Nothing controversial here, a handful of things across the board"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: pxa: fix USB gadget driver compilation regression
  ARM: OMAP2+: Fix LCD panel backlight regression for LDP legacy booting
  ARM: OMAP2+: hwmod_data: fix missing OMAP_INTC_START in irq data
  ARM: DRA7: hwmod: Fix boot crash with DEBUG_LL
  ARM: shmobile: r8a7790: fix shdi resource sizes
  ARM: shmobile: bockw: fixup DMA mask
  ARM: shmobile: armadillo: Add PWM backlight power supply

Pull x86 fixes from Peter Anvin:
 "There is a small EFI fix and a big power regression fix in this batch.

  My queue also had a fix for downing a CPU when there are insufficient
  number of IRQ vectors available, but I'm holding that one for now due
  to recent bug reports"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/efi: Don't select EFI from certain special ACPI drivers
  x86 idle: Repair large-server 50-watt idle-power regression

Pull ACPI and power management fixes and new device IDs from Rafael Wysocki:

 - Fix for a cpufreq regression causing stale sysfs files to be left
   behind during system resume if cpufreq_add_dev() fails for one or
   more CPUs from Viresh Kumar.

 - Fix for a bug in cpufreq causing CONFIG_CPU_FREQ_DEFAULT_* to be
   ignored when the intel_pstate driver is used from Jason Baron.

 - System suspend fix for a memory leak in pm_vt_switch_unregister()
   that forgot to release objects after removing them from
   pm_vt_switch_list.  From Masami Ichikawa.

 - Intel Valley View device ID and energy unit encoding update for the
   (recently added) Intel RAPL (Running Average Power Limit) driver from
   Jacob Pan.

 - Intel Bay Trail SoC GPIO and ACPI device IDs for the Low Power
   Subsystem (LPSS) ACPI driver from Paul Drews.

* tag 'pm+acpi-3.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  powercap / RAPL: add support for ValleyView Soc
  PM / sleep: Fix memory leak in pm_vt_switch_unregister().
  cpufreq: Use CONFIG_CPU_FREQ_DEFAULT_* to set initial policy for setpolicy drivers
  cpufreq: remove sysfs files for CPUs which failed to come back after resume
  ACPI: Add BayTrail SoC GPIO and LPSS ACPI IDs

Merge tag 'omap-for-v3.13/intc-ldp-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

From Tony Lindgren:
Fix a regression for wrong interrupt numbers for some devices after
the sparse IRQ conversion, fix DRA7 console output for earlyprintk,
and fix the LDP LCD backlight when DSS is built into the kernel and
not as a loadable module.

* tag 'omap-for-v3.13/intc-ldp-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: Fix LCD panel backlight regression for LDP legacy booting
  ARM: OMAP2+: hwmod_data: fix missing OMAP_INTC_START in irq data
  ARM: DRA7: hwmod: Fix boot crash with DEBUG_LL
  + v3.13-rc5
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'renesas-fixes2-for-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes

From Simon Horman:
Second Round of Renesas ARM based SoC Fixes for v3.13

* r8a7790 (R-Car H2) based Lager board
  - Correct SHDI resource sizes
    This bug has been present since sdhi resources were added to the r8a7790 by
    8c9b1aa4 ("ARM: shmobile: r8a7790: add MMCIF and SDHI DT
    templates") in v3.11-rc2.

* r8a7778 (R-Car M1) based Bock-W board
  - Correct DMA mask
    This resolves a regression introduced by 4dcfa600
    ("ARM: DMA-API: better handing of DMA masks for coherent allocations")
    in v3.12-rc1.

* r8a7740 (R-Mobile A1) based Armadillo board
  - Add PWM backlight power supply
    This resolves a regression introduced by 22ceeee1
    ("pwm-backlight: Add power supply support") in v3.12.

* tag 'renesas-fixes2-for-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: r8a7790: fix shdi resource sizes
  ARM: shmobile: bockw: fixup DMA mask
  ARM: shmobile: armadillo: Add PWM backlight power supply
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Olof Johansson <olof@lixom.net>

After commit 88f718e3
"ARM: pxa: delete the custom GPIO header" a compilation
error was introduced in the PXA25x gadget driver.
An attempt to fix the problem was made in
commit b144e4ab
"usb: gadget: fix pxa25x compilation problems"
by explictly stating the driver needs the <mach/hardware.h>
header, which solved the compilation for a few boards,
such as the pxa255-idp and its defconfig.

However the Lubbock board has this special clause in
drivers/usb/gadget/pxa25x_udc.c:

This include file has an implicit dependency on
<mach/irqs.h> having been included before <mach/lubbock.h>
was included.

Before commit 88f718e3
"ARM: pxa: delete the custom GPIO header" this implicit
dependency for the pxa25x_udc compile on the Lubbock was
satisfied by <linux/gpio.h> implicitly including
<mach/gpio.h> which was in turn including <mach/irqs.h>,
apart from the earlier added <mach/hardware.h>.

Fix this by having the PXA25x <mach/lubbock.h> explicitly
include <mach/irqs.h>.
Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Greg Kroah-Hartmann <gregkh@linuxfoundation.org>
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'for-v3.13-rc/hwmod-fixes-b' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into debug-ll-and-ldp-backlight-fix

A few OMAP hwmod fixes for v3.13-rc.  One patch fixes some IRQ
problems with GPMC, RNG, and ISP/IVA MMUs on OMAP2/3.  The other fixes
some problems with DEBUG_LL on DRA7xx.

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

http://www.pwsan.com/omap/testlogs/hwmod_fixes_b_v3.13-rc/20131226021920/

Looks like the LCD panel on LDP has been broken quite a while, and
recently got fixed by commit 0b2aa8be (gpio: twl4030: Fix regression
for twl gpio output). However, there's still an issue left where the panel
backlight does not come on if the LCD drivers are built into the
kernel.

Fix the issue by registering the DPI LCD panel only after the twl4030
GPIO has probed.
Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
[tony@atomide.com: updated per Tomi's comments]
Signed-off-by: Tony Lindgren <tony@atomide.com>

* powercap:
  powercap / RAPL: add support for ValleyView Soc

* acpi-lpss:
  ACPI: Add BayTrail SoC GPIO and LPSS ACPI IDs

* pm-cpufreq:
  cpufreq: Use CONFIG_CPU_FREQ_DEFAULT_* to set initial policy for setpolicy drivers
  cpufreq: remove sysfs files for CPUs which failed to come back after resume

* pm-sleep:
  PM / sleep: Fix memory leak in pm_vt_switch_unregister().

Pull ext4 fixes from Ted Ts'o:
 "A collection of bug fixes destined for stable and some printk cleanups
  and a patch so that instead of BUG'ing we use the ext4_error()
  framework to mark the file system is corrupted"

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: add explicit casts when masking cluster sizes
  ext4: fix deadlock when writing in ENOSPC conditions
  jbd2: rename obsoleted msg JBD->JBD2
  jbd2: revise KERN_EMERG error messages
  jbd2: don't BUG but return ENOSPC if a handle runs out of space
  ext4: Do not reserve clusters when fs doesn't support extents
  ext4: fix del_timer() misuse for ->s_err_report
  ext4: check for overlapping extents in ext4_valid_extent_entries()
  ext4: fix use-after-free in ext4_mb_new_blocks
  ext4: call ext4_error_inode() if jbd2_journal_dirty_metadata() fails

Commit 7d7e1eba (ARM: OMAP2+: Prepare for irqs.h removal) and commit
ec2c0825 (ARM: OMAP2+: Remove hardcoded IRQs and enable SPARSE_IRQ)
updated the way interrupts for OMAP2/3 devices are defined in the
HWMOD data structures to being an index plus a fixed offset (defined
by OMAP_INTC_START).

Couple of irqs in the OMAP2/3 hwmod data were misconfigured completely
as they were missing this OMAP_INTC_START relative offset. Add this
offset back to fix the incorrect irq data for the following modules:
	OMAP2 - GPMC, RNG
	OMAP3 - GPMC, ISP MMU & IVA MMU
Signed-off-by: Suman Anna <s-anna@ti.com>
Fixes: 7d7e1eba ("ARM: OMAP2+: Prepare for irqs.h removal")
Fixes: ec2c0825 ("ARM: OMAP2+: Remove hardcoded IRQs and enable SPARSE_IRQ")
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>

With commit '7dedd346: ARM: OMAP2+: hwmod: Fix a crash in _setup_reset() with
 DEBUG_LL' we moved from parsing cmdline to identify uart used for earlycon
to using the requsite hwmod CONFIG_DEBUG_OMAPxUARTy FLAGS.

On DRA7 though, we seem to be missing this flag, and atleast on the DRA7 EVM
where we use uart1 for console, boot fails with DEBUG_LL enabled.
Reported-by: Lokesh Vutla <lokeshvutla@ti.com>
Tested-by:  Lokesh Vutla <lokeshvutla@ti.com> # on a different base
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Fixes: 7dedd346 ("ARM: OMAP2+: hwmod: Fix a crash in _setup_reset() with DEBUG_LL")
Signed-off-by: Paul Walmsley <paul@pwsan.com>

Pull block fixes from Jens Axboe:
 - fix for a memory leak on certain unplug events
 - a collection of bcache fixes from Kent and Nicolas
 - a few null_blk fixes and updates form Matias
 - a marking of static of functions in the stec pci-e driver

* 'for-linus' of git://git.kernel.dk/linux-block:
  null_blk: support submit_queues on use_per_node_hctx
  null_blk: set use_per_node_hctx param to false
  null_blk: corrections to documentation
  null_blk: warning on ignored submit_queues param
  null_blk: refactor init and init errors code paths
  null_blk: documentation
  null_blk: mem garbage on NUMA systems during init
  drivers: block: Mark the functions as static in skd_main.c
  bcache: New writeback PD controller
  bcache: bugfix for race between moving_gc and bucket_invalidate
  bcache: fix for gc and writeback race
  bcache: bugfix - moving_gc now moves only correct buckets
  bcache: fix for gc crashing when no sectors are used
  bcache: Fix heap_peek() macro
  bcache: Fix for can_attach_cache()
  bcache: Fix dirty_data accounting
  bcache: Use uninterruptible sleep in writeback
  bcache: kthread don't set writeback task to INTERUPTIBLE
  block: fix memory leaks on unplugging block device
  bcache: fix sparse non static symbol warning

Pull cgroup fixes from Tejun Heo:
 "Two fixes.  One fixes a bug in the error path of cgroup_create().  The
  other changes cgrp->id lifetime rule so that the id doesn't get
  recycled before all controller states are destroyed.  This premature
  id recycling made memcg malfunction"

* 'for-3.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup: don't recycle cgroup id until all csses' have been destroyed
  cgroup: fix cgroup_create() error handling path

Pull percpu fix from Tejun Heo:
 "A single commit to fix a spurious sparse warning coming from
  DEFINE_PER_CPU()'s hack to support the use of weak symbols.  Shouldn't
  cause observable behavior change"

* 'for-3.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
  percpu: fix spurious sparse warnings from DEFINE_PER_CPU()

Pull libata fixes from Tejun Heo:
 "There's one interseting commit - "libata, freezer: avoid block device
  removal while system is frozen".  It's an ugly hack working around a
  deadlock condition between driver core resume and block layer device
  removal paths through freezer which was made more reproducible by
  writeback being converted to workqueue some releases ago.  The bug has
  nothing to do with libata but it's just an workaround which is easy to
  backport.  After discussion, Rafael and I seem to agree that we don't
  really need kernel freezables - both kthread and workqueue.  There are
  few specific workqueues which constitute PM operations and require
  freezing, which will be converted to use workqueue_set_max_active()
  instead.  All other kernel freezer uses are planned to be removed,
  followed by the removal of kthread and workqueue freezer support,
  hopefully.

  Others are device-specific fixes.  The most notable is the addition of
  NO_NCQ_TRIM which is used to disable queued TRIM commands to Micro
  M500 SSDs which otherwise suffers data corruption"

* 'for-3.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  libata, freezer: avoid block device removal while system is frozen
  libata: implement ATA_HORKAGE_NO_NCQ_TRIM and apply it to Micro M500 SSDs
  libata: disable a disk via libata.force params
  ahci: bail out on ICH6 before using AHCI BAR
  ahci: imx: Explicitly clear IMX6Q_GPR13_SATA_MPLL_CLK_EN
  libata: add ATA_HORKAGE_BROKEN_FPDMA_AA quirk for Seagate Momentus SpinPoint M8

Commit 2171364d ("powerpc: Add HWCAP2 aux entry") introduced a new
AT_ auxv entry type AT_HWCAP2 but failed to update AT_VECTOR_SIZE_BASE
accordingly.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Fixes: 2171364d (powerpc: Add HWCAP2 aux entry)
Cc: stable@vger.kernel.org
Acked-by: Michael Neuling <michael@neuling.org>
Cc: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull SELinux fixes from James Morris.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  selinux: selinux_setprocattr()->ptrace_parent() needs rcu_read_lock()
  selinux: fix broken peer recv check

Pull ext2 fix from Jan Kara:
 "One simple fix of oops in ext2 which was recently hit by Christoph"

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  ext2: Fix oops in ext2_get_block() called from ext2_quota_write()

Pull infiniband fixes from Roland Dreier:
 "Last batch of InfiniBand/RDMA changes for 3.13 / 2014:
   - Additional checks for uverbs to ensure forward compatibility,
     handle malformed input better.
   - Fix potential use-after-free in iWARP connection manager.
   - Make a function static"

* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB/uverbs: Check access to userspace response buffer in extended command
  IB/uverbs: Check input length in flow steering uverbs
  IB/uverbs: Set error code when fail to consume all flow_spec items
  IB/uverbs: Check reserved fields in create_flow
  IB/uverbs: Check comp_mask in destroy_flow
  IB/uverbs: Check reserved field in extended command header
  IB/uverbs: New macro to set pointers to NULL if length is 0 in INIT_UDATA()
  IB/core: const'ify inbuf in struct ib_udata
  RDMA/iwcm: Don't touch cm_id after deref in rem_ref
  RDMA/cxgb4: Make _c4iw_write_mem_dma() static

selinux_setprocattr() does ptrace_parent(p) under task_lock(p),
but task_struct->alloc_lock doesn't pin ->parent or ->ptrace,
this looks confusing and triggers the "suspicious RCU usage"
warning because ptrace_parent() does rcu_dereference_check().

And in theory this is wrong, spin_lock()->preempt_disable()
doesn't necessarily imply rcu_read_lock() we need to access
the ->parent.
Reported-by: Evan McNabb <emcnabb@redhat.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paul Moore <pmoore@redhat.com>

Fix a broken networking check. Return an error if peer recv fails.  If
secmark is active and the packet recv succeeds the peer recv error is
ignored.
Signed-off-by: Chad Hanson <chanson@trustedcs.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paul Moore <pmoore@redhat.com>