Even using percpu stats, we still hit tunnel dst_entry refcount in
ip6_tnl_xmit2()

Since we are in RCU locked section, we can use skb_dst_set_noref() and
avoid these atomic operations, leaving dst shared on cpus.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

ipv6_destopt_rcv() runs with rcu_read_lock(), so there is no need to
take a temporay reference on dst_entry, even if skb is freed by
ip6_parse_tlv()
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Use RCU to avoid changing dst_entry refcount in fast path.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

ICMP and ND are not fast path, but still we can avoid changing idev
refcount, using RCU.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

64-bit stats in be2net are written/read as follows using the stats-sync
interface for safe access in 32-bit archs:

64-bit 		sync			writer			reader
stats
------------------------------------------------------------------------------
tx_stats	tx_stats->sync		be_xmit			be_get_stats64,
								ethtool
tx-compl	tx_stats->sync_compl	tx-compl-processing	ethtool
rx-stats	rx_stats->sync		rx-compl-processing	be_get_stats64,
								ethtool,
								eqd-update

This patch is based on Stephen Hemminger's earlier patch on the same issue...
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

In preparation for 64-bit stats interface, the following cleanups help
streamline the code:
1) made some more rx/tx stats stored by driver 64 bit
2) made some HW stas (err/drop counters) stored in be_drv_stats 32 bit to
   keep the code simple as BE provides 32-bit counters only.
3) removed duplication of netdev stats in ethtool
4) removed some un-necessary stats and fixed some names
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (46 commits)
  mfd: Fix mismatch in twl4030 mutex lock-unlock
  mfd: twl6030-pwm.c needs MODULE_LICENSE
  mfd: Fix the omap-usb-host clock API usage on usbhs_disable()
  mfd: Acknowledge WM8994 IRQs before reporting
  mfd: Acknowlege all WM831x IRQs before we handle them
  mfd: Avoid two assignments if failures happen in tps65910_i2c_probe
  regulator: Storing tps65912 error codes in u8
  mfd: Don't leak init_data in tps65910_i2c_probe
  regulator: aat2870: Add AAT2870 regulator driver
  backlight: Add AAT2870 backlight driver
  mfd: Add AAT2870 mfd driver
  mfd: Remove dead code from max8997-irq
  mfd: Move TPS55910 Kconfig option
  mfd: Fix missing stmpe kerneldoc
  mfd: Fix off-by-one value range checking for tps65912_i2c_write
  mfd: Add devices for WM831x clocking module
  mfd: Remove comp{1,2}_threshold sysfs entries in tps65911_comparator_remove
  mfd: Don't ask about the TPS65912 core driver in Kconfig
  mfd: Fix off by one in WM831x IRQ code
  mfd: Add tps65921 support from twl-core
  ...

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k/math-emu: Remove unnecessary code
  m68k/math-emu: Remove commented out old code
  m68k: Kill warning in setup_arch() when compiling for Sun3
  m68k/atari: Prefix GPIO_{IN,OUT} with CODEC_
  sparc: iounmap() and *_free_coherent() - Use lookup_resource()
  m68k/atari: Reserve some ST-RAM early on for device buffer use
  m68k/amiga: Chip RAM - Use lookup_resource()
  resources: Add lookup_resource()
  sparc: _sparc_find_resource() should check for exact matches
  m68k/amiga: Chip RAM - Offset resource end by CHIP_PHYSADDR
  m68k/amiga: Chip RAM - Use resource_size() to fix off-by-one error
  m68k/amiga: Chip RAM - Change chipavail to an atomic_t
  m68k/amiga: Chip RAM - Always allocate from the start of memory
  m68k/amiga: Chip RAM - Convert from printk() to pr_*()
  m68k/amiga: Chip RAM - Use tabs for indentation

Fix two recently introduced compile problems:

Fix a typo in fs/nfs/pnfs.h

Move the pnfs_blksize declaration outside the CONFIG_NFS_V4 section in
struct nfs_server.
Reported-by: Jens Axboe <jaxboe@fusionio.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

A mutex is locked on entry into twl4030_madc_conversion().
Immediate return on some error conditions leaves the
mutex locked.

This patch ensures that mutex is always unlocked before
leaving the function.
Signed-off-by: Sanjeev Premi <premi@ti.com>
Cc: Keerthy <j-keerthy@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

twl6030_pwm: module license 'unspecified' taints kernel.
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Acked-by: Hemanth V <hemanthv@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

usbhs_disable function was invoking clk_enable() instead of
clk_disable(), thus only increasing the clock usage counter and
preventing this particular clock from being ever turned off.
Because of this, the power domain of omap4 the USB Host subsystem
would never reach lower power states.This patch calls clk_disable()
in usbhs_disable function
Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

This ensures we never have a window where we've handled an interrupt but
not told the hardware about it.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

Ensure that we never have a window where we've handled an interrupt (and
therefore need to be notified of new events) but haven't yet told the
interrupt controller that this is the case (so any new events will be
discarded).
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

In drivers/mfd/tps65910.c:tps65910_i2c_probe() there's potential for a
tiny optimization.

We assign to init_data->irq and init_data->irq_base long before we
need them, and there are two potential exits from the function before
they are needed.

Moving the assignments below these two potential exits means we
completely avoid doing them in these two (failure) cases.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: Graeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

get_ctrl_reg() returns -EINVAL so the error handling won't work here
if reg is a u8.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

There are a couple of situations where we leak init_data in
drivers/mfd/tps65910.c:tps65910_i2c_probe() - this patch should take
care of them.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

Add regulator driver for AnalogicTech AAT2870.
Signed-off-by: Jin Park <jinyoungp@nvidia.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

Add backlight driver for AnalogicTech AAT2870.
Signed-off-by: Jin Park <jinyoungp@nvidia.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

Add mfd core driver for AnalogicTech AAT2870.
The AAT2870 is communication through I2C and contains backlight and
regulator components.
Signed-off-by: Jin Park <jinyoungp@nvidia.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

We either hit one of the case's or the default in the switch statement
in get_i2c(), so the 'return ERR_PTR(-EINVAL);' at the end of the
function is just dead code - remove it.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

Having another TPS chip at the end of the Kconfig when all it's
relatives are grouped together in their own section seems totally
counter-intuitive. Move it, also in the Makefile.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

Generating kerneldoc for STMPE result in warnings, so fix this by
adding missing documentation.
Signed-off-by: Om Prakash <omprakash.pal@stericsson.com>
Reviewed-by: Rabin Vincent <rabin.vincent@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com>
Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

If bytes == (TPS6591X_MAX_REGISTER + 1), we have a buffer overflow when
doing memcpy(&msg[1], src, bytes).
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

With the new generic clk API that should appear at some point we should be
able to support the clocking sensibly in Linux.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

The user has to select the I2C and SPI drivers individually and they select
the core driver for the device so there's no point in presenting the user
with an option for the core driver.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

The GPIO IRQs aren't the first IRQs defined, we need to subtract the base
for the GPIOs as well to use them for array indexes.
Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

Very similar to TPS65920
List of differences: http://www.ti.com/litv/pdf/swcu066bSigned-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

Purely for defensiveness.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

The tps65910_irq_exit() cleanup function was generating a warning from
sparse due to the lack of a prototype. This wasn't causing GCC warnings
as the driver wasn't cleaning up its IRQs on exit at all so there was no
use of an unprototyped function.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

Tunnel Creek has an additional watchdog core.
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

This adds a previously undefined test register and removed a
number of double-defined accessory detect registers (they are
already defined higher up in the file.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

This synchronize the subdevice entries for the AB8500 MFD driver
with the latest development of subdrivers for things like battery
charging and temperature monitoring.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

Internal MFD device structs are marked as __devinitdata since the kernel
will allocate memory for the same when calling mfd_add_devices.
Signed-off-by: Robert Rosengren <robert.rosengren@stericsson.com>
Reviewed-by: Mattias Wallin <mattias.wallin@stericsson.com>
Reviewed-by: Johan Palsson <johan.palsson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

The tps65912 consist of 4 DCDCs and 10 LDOs. The output voltages can be
configured by the SPI or I2C interface, they are meant to supply power
to the main processor and other components.
Signed-off-by: Margarita Olaya Cabrera <magi@slimlogic.co.uk>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

TPS65912 has five GPIOs that can be configured for different
purposes.
Signed-off-by: Margarita Olaya Cabrera <magi@slimlogic.co.uk>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

This module controls the interrupt handling for the tps65912.
The interrupt sources can be the following:

- GPIO
- PWRON signal
- PWRHOLD signal
- Temperature detection
Signed-off-by: Margarita Olaya Cabrera <magi@slimlogic.co.uk>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>