The power capping framework providing a consistent interface between the
kernel and user space that allows power capping drivers to expose their
settings to user space in a uniform way.
The overall design of the framework is described in the documentation
added by the previous patch in this series.
Signed-off-by: NSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: NJacob Pan <jacob.jun.pan@linux.intel.com>
Reviewed-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

This driver has a section mismatch, for probe and remove functions,
leading to the following warning during the compilation.

WARNING: drivers/watchdog/built-in.o(.data+0x24): Section mismatch in
reference from the variable sunxi_wdt_driver to the function
.init.text:sunxi_wdt_probe()
The variable sunxi_wdt_driver references
the function __init sunxi_wdt_probe()
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

STAGE_CFG bits are defined as [5:4] bits. However, '(((x) & 0x30) << 4)'
handles [9:8] bits. Thus, it should be fixed in order to handle
[5:4] bits.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Calling the WDIOC_GETSTATUS & WDIOC_GETBOOTSTATUS and twice will cause a
interruptible deadlock.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

This reverts commit 81b5c7bc.

Adding drm/i915 into the vga arbiter chain means that X (in a piece of
well-meant paranoia) will do a get/put on the vga decoding around
_every_ accel call down into the ddx. Which results in some nice
performance disasters [1]. This really breaks userspace, by disabling
DRI for everyone, and stops OpenGL from working, this isn't limited
to just the i915 but both the integrated and discrete GPUs on
multi-gpu systems, in other words this causes untold worlds of pain,

Ville tried to come up with a Great Hack to fiddle the required VGA
I/O ops behind everyone's back using stop_machine, but that didn't
really work out [2]. Given that we're fairly late in the -rc stage for
such games let's just revert this all.

One thing we might want to keep is to delay the disabling of the vga
decoding until the fbdev emulation and the fbcon screen is set up. If
we kill vga mem decoding beforehand fbcon can end up with a white
square in the top-left corner it tried to save from the vga memory for
a seamless transition. And we have bug reports on older platforms
which seem to match these symptoms.

But again that's something to play around with in -next.

References: [1] http://lists.x.org/archives/xorg-devel/2013-September/037763.html
References: [2] http://www.spinics.net/lists/intel-gfx/msg34062.html
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NDave Airlie <airlied@redhat.com>

This reverts commit 6e1b4fda.

This is part of a revert due to a userspace breakage, better explained in the revert of 1a1a4cbf4906a13c0c377f708df5d94168e7b582.
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Free memory allocated to edma_desc when failing to allocate slot.
Signed-off-by: NGeyslan G. Bem <geyslan@gmail.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

Commit 4981c4dc (DMA: shdma: switch DT mode to
use configuration data from a match table) added a new parameter to set_slave()
method but unfortunately got merged later than commit c4f6c41b
(dma: add driver for R-Car HPB-DMAC), so that the HPB-DMAC driver retained the
old prototype which caused this warning:

drivers/dma/sh/rcar-hpbdma.c:485: warning: initialization from incompatible
pointer type

The newly added parameter  is used to override DMA slave address from 'struct
hpb_dmae_slave_config', so we have to add the 'slave_addr' field to 'struct
hpb_dmae_chan', conditionally assign it in set_slave() method, and return in
slave_addr() method.
Signed-off-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Tested-by: NSimon Horman <horms+renesas@verge.net.au>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

Commit c1c63a14 (DMA: shdma: switch to managed
resource allocation) got rid of shdma_free_irq() but  unfortunately got merged
later than commit c4f6c41b (dma: add driver for
R-Car HPB-DMAC), so that the HPB-DMAC driver retained the calls and got broken:

drivers/dma/sh/rcar-hpbdma.c: In function `hpb_dmae_alloc_chan_resources':
drivers/dma/sh/rcar-hpbdma.c:435: error: implicit declaration of function
`shdma_free_irq'

Fix this compilation error by removing the remaining shdma_free_irq() calls.
Reported-by: NSimon Horman <horms@verge.net.au>
Signed-off-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Tested-by: NSimon Horman <horms+renesas@verge.net.au>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

Commit c0f04d88 ("bcache: Fix flushes in writeback mode") was fixing
a reported data corruption bug, but it seems some last minute
refactoring or rebasing introduced a null pointer deref.
Signed-off-by: NKent Overstreet <kmo@daterainc.com>
Cc: linux-stable <stable@vger.kernel.org> # >= v3.10
Reported-by: NGabriel de Perthuis <g2p.code@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

This patch is to prevent hpwdt from loading on any auxilary iLO devices defined
after the initial (or main) iLO device. All auxilary iLO devices will have a
subsystem device ID set to 0x1979 in order for hpwdt to differentiate between
the two types.
Signed-off-by: NThomas Mingarelli <thomas.mingarelli@hp.com>
Tested-by: NLisa Mitchell <lisa.mitchell@hp.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Allow architectures which have a disabled get_cycles() function to
provide a random_get_entropy() function which provides a fine-grained,
rapidly changing counter that can be used by the /dev/random driver.

For example, an architecture might have a rapidly changing register
used to control random TLB cache eviction, or DRAM refresh that
doesn't meet the requirements of get_cycles(), but which is good
enough for the needs of the random driver.
Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
Cc: stable@vger.kernel.org

HW ACR support may have issues on some older chips, so
use SW ACR for now until we've tested further.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
CC: Rafał Miłecki <zajec5@gmail.com>

If it is not there yet, it might appear later.
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

If it is not there yet, it might appear later.
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

If the i2c-parent bus driver is not loaded, returning
-ENODEV will force people to unload and then reload the
module again to get it working.
Signed-off-by: NIonut Nicu <ioan.nicu.ext@nsn.com>
Acked-by: NPeter Korsgaard <peter.korsgaard@barco.com>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

of_get_named_gpio could return -E_PROBE_DEFER or another
error code. This error should be passed further instead
of being ignored.
Signed-off-by: NIonut Nicu <ioan.nicu.ext@nsn.com>
Acked-by: NPeter Korsgaard <peter.korsgaard@barco.com>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

Initially commit cb527ede
"i2c-omap: Double clear of ARDY status in IRQ handler"
added a workaround for undocumented errata ProDB0017052.
But then commit 1d7afc95
"i2c: omap: ack IRQ in parts" refactored code and missed
one of ARDY clearings. So current code violates errata.
It causes often i2c bus timeouts on my Pandaboard.

This patch adds a second clearing in place.
Signed-off-by: NGrygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: NTaras Kondratiuk <taras.kondratiuk@linaro.org>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org

The code in acpi_i2c_register_devices() assumes that all i2c adapters
have a parent. This is not necessarily the case, for example the
i2c-stub driver instantiate a virtual i2c adapter without a parent.
Check for this to avoid a NULL pointer deference.
Signed-off-by: NJean Delvare <jdelvare@suse.de>
Acked-by: NMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

Subsystems like pinctrl and gpio rightfully make use of deferred probing at
core level. Now, deferred drivers won't be retried if they don't have a .probe
function specified in the driver struct. Fix this driver to have that, so the
devices it supports won't get lost in a deferred probe.
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

Subsystems like pinctrl and gpio rightfully make use of deferred probing at
core level. Now, deferred drivers won't be retried if they don't have a .probe
function specified in the driver struct. Fix this driver to have that, so the
devices it supports won't get lost in a deferred probe.
Acked-by: NMarek Vasut <marex@denx.de>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

Subsystems like pinctrl and gpio rightfully make use of deferred probing at
core level. Now, deferred drivers won't be retried if they don't have a .probe
function specified in the driver struct. Fix this driver to have that, so the
devices it supports won't get lost in a deferred probe.
Acked-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

Subsystems like pinctrl and gpio rightfully make use of deferred probing at
core level. Now, deferred drivers won't be retried if they don't have a .probe
function specified in the driver struct. Fix this driver to have that, so the
devices it supports won't get lost in a deferred probe.
Reported-by: NZhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

Causes hangs on certain boards.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=70053Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Disable CG/PG before resetting.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Disable CG/PG and stop the rlc before resetting.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

These checks should be ">=" instead of ">".  j is used as an offset into
the table->mc_reg_address[] array and that has
SMC_SISLANDS_MC_REGISTER_ARRAY_SIZE (16) elements.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

It should be ">=" instead of ">" here.  The table->mc_reg_address[]
array has SMC_EVERGREEN_MC_REGISTER_ARRAY_SIZE (16) elements.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

The error path does this:

	for (--i; i >= 0; --i) {

which is a forever loop because "i" is unsigned.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

They have 4 rather than 8.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=63599Signed-off-by: Nwojciech kapuscinski <wojtask9@wp.pl>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

Wrong bit offset for SRC endian swapping.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

Always use the regular UVD state for now.  This fixes
a performance regression with UVD playback on certain APUs.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Use the hw generated values rather than calculating
them in the driver.  There may be some older r6xx
asics where this doesn't work correctly.  This remains
to be seen.

See bug:
https://bugs.freedesktop.org/show_bug.cgi?id=69675Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

The drm code that calculates the 1001 clocks rounds up
rather than truncating.  This allows the table to match
properly on those modes.

See bug:
https://bugs.freedesktop.org/show_bug.cgi?id=69675Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Avoid losing precision.  See bug:
https://bugs.freedesktop.org/show_bug.cgi?id=69675

v2: fix math as per Anssi's comments.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Return -ENOMEM if the allocation fails.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Reviewed-by: NJani Nikula <jani.nikula@intel.com>

This reverts commit 928c2f0c.

This patch double applied, two checks for the price of one.
Signed-off-by: NDave Airlie <airlied@redhat.com>

The crash reported and investigated in commit 5f4513 turned out to be
caused by a change to the read interface on newer (2012) SMCs.

Tests by Chris show that simply reading the data valid line is enough
for the problem to go away. Additional tests show that the newer SMCs
no longer wait for the number of requested bytes, but start sending
data right away.  Apparently the number of bytes to read is no longer
specified as before, but instead found out by reading until end of
data. Failure to read until end of data confuses the state machine,
which eventually causes the crash.

As a remedy, assuming bit0 is the read valid line, make sure there is
nothing more to read before leaving the read function.

Tested to resolve the original problem, and runtested on MBA3,1,
MBP4,1, MBP8,2, MBP10,1, MBP10,2. The patch seems to have no effect on
machines before 2012.
Tested-by: NChris Murphy <chris@cmurf.com>
Cc: stable@vger.kernel.org
Signed-off-by: NHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Commit 8b9ba7a3 'drm/gma500: use gem get/put page helpers' was missing a
line, which resulted in garbled screen.
Signed-off-by: NRob Clark <robdclark@gmail.com>
Tested-by: NGuillaume CLÉMENT <gclement@baobob.org>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Signed-off-by: NBen Skeggs <bskeggs@redhat.com>