platform/kernel/linux-rpi.git
12 years agoMerge branch 'for-rmk' of git://linux-arm.org/linux-2.6-wd into devel-stable
Russell King [Fri, 16 Sep 2011 20:45:16 +0000 (21:45 +0100)]
Merge branch 'for-rmk' of git://linux-arm.org/linux-2.6-wd into devel-stable

Conflicts:
arch/arm/mach-imx/mach-cpuimx27.c

12 years agoMerge branch 'zImage_DTB_append' of git://git.linaro.org/people/nico/linux into devel...
Russell King [Wed, 14 Sep 2011 23:02:28 +0000 (00:02 +0100)]
Merge branch 'zImage_DTB_append' of git://git.linaro.org/people/nico/linux into devel-stable

12 years agoARM: zImage: prevent constant copy+rebuild of lib1funcs.S
Nicolas Pitre [Wed, 14 Sep 2011 04:16:21 +0000 (00:16 -0400)]
ARM: zImage: prevent constant copy+rebuild of lib1funcs.S

The rule to copy this file doesn't have to be forced.  However
lib1funcs.[So] have to be listed amongst the targets.

This prevents zImage from being recreated needlessly.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Dave Martin <dave.martin@linaro.org>
Tested-by: Thomas Abraham <thomas.abraham@linaro.org>
12 years agoARM: zImage: allow supplementing appended DTB with traditional ATAG data
Nicolas Pitre [Wed, 14 Sep 2011 02:37:07 +0000 (22:37 -0400)]
ARM: zImage: allow supplementing appended DTB with traditional ATAG data

Some old bootloaders can't be updated to a device tree capable one,
yet they provide ATAGs with memory configuration, the ramdisk address,
the kernel cmdline string, etc.  To allow a device tree enabled
kernel to be used with such bootloaders, it is necessary to convert those
ATAGs into FDT properties and fold them into the DTB appended to zImage.

Currently the following ATAGs are converted:

ATAG_CMDLINE
ATAG_MEM
ATAG_INITRD2

If the corresponding information already exists in the appended DTB, it
is replaced, otherwise the required node is created to hold it.

The code looks for ATAGs at the location pointed by the value of r2 upon
entry into the zImage code.  If no ATAGs are found there, an attempt at
finding ATAGs at the typical 0x100 offset from start of RAM is made.
Otherwise the DTB is left unchanged.

Thisstarted from an older patch from John Bonesio <bones@secretlab.ca>,
with contributions from David Brown <davidb@codeaurora.org>.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Dave Martin <dave.martin@linaro.org>
Tested-by: Thomas Abraham <thomas.abraham@linaro.org>
12 years agoARM: zImage: gather some string functions into string.c
Nicolas Pitre [Wed, 14 Sep 2011 01:42:55 +0000 (21:42 -0400)]
ARM: zImage: gather some string functions into string.c

This is a small subset of string functions needed by commits to come.
Except for memcpy() which is unchanged from its original location, their
implementation is meant to be small, and -Os is enforced to prevent gcc
from doing pointless loop unrolling.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Dave Martin <dave.martin@linaro.org>
Tested-by: Thomas Abraham <thomas.abraham@linaro.org>
12 years agoARM: zImage: make sure appended DTB doesn't get overwritten by kernel .bss
Nicolas Pitre [Sun, 12 Jun 2011 05:07:33 +0000 (01:07 -0400)]
ARM: zImage: make sure appended DTB doesn't get overwritten by kernel .bss

The appended DTB gets relocated with the decompressor code to get out
of the way of the decompressed kernel.  However the kernel's .bss section
may be larger than the relocated code and data, and then the DTB gets
overwritten.  Let's make sure the relocation takes care of moving zImage
far enough so no such conflict with .bss occurs.

Thanks to Tony Lindgren <tony@atomide.com> for figuring out this issue.

While at it, let's clean up the code a bit so that the wont_overwrite
symbol is used while determining if a conflict exists, making the above
change more precise as well as eliminating some ARM/THUMB alternates.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Dave Martin <dave.martin@linaro.org>
Tested-by: Thomas Abraham <thomas.abraham@linaro.org>
12 years agoARM: zImage: Allow the appending of a device tree binary
John Bonesio [Fri, 27 May 2011 22:45:50 +0000 (18:45 -0400)]
ARM: zImage: Allow the appending of a device tree binary

This patch provides the ability to boot using a device tree that is appended
to the raw binary zImage (e.g. cat zImage <filename>.dtb > zImage_w_dtb).

Signed-off-by: John Bonesio <bones@secretlab.ca>
[nico: ported to latest zImage changes plus additional cleanups/improvements]
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Dave Martin <dave.martin@linaro.org>
Tested-by: Thomas Abraham <thomas.abraham@linaro.org>
12 years agoARM: zImage: ensure it is always a multiple of 64 bits in size
Nicolas Pitre [Sat, 28 May 2011 02:25:26 +0000 (22:25 -0400)]
ARM: zImage: ensure it is always a multiple of 64 bits in size

This is needed for proper alignment when the DTB appending feature
is used.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Dave Martin <dave.martin@linaro.org>
Tested-by: Thomas Abraham <thomas.abraham@linaro.org>
12 years agoMerge branches 'hwbreak', 'perf/updates' and 'perf/system-pmus' into for-rmk
Will Deacon [Wed, 31 Aug 2011 09:50:37 +0000 (10:50 +0100)]
Merge branches 'hwbreak', 'perf/updates' and 'perf/system-pmus' into for-rmk

12 years agoARM: perf: Remove unnecessary armpmu->enable()s
Mark Rutland [Tue, 23 Aug 2011 10:59:49 +0000 (11:59 +0100)]
ARM: perf: Remove unnecessary armpmu->enable()s

Currently, armpmu_enable iterates through the events for a given
counter set, calling armpmu->enable on each before calling
armpmu->start to start the PMU's counters.

As armpmu->enable is called when each event is added, each event is
already configured in hardware. Due to this, calling armpmu->enable
in armpmu_enable is unnecessary and confusing.

This patch removes the unnecessary calls to armpmu->enable.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: move arm_pmu into <asm/pmu.h>
Mark Rutland [Thu, 19 May 2011 09:07:57 +0000 (10:07 +0100)]
ARM: perf: move arm_pmu into <asm/pmu.h>

Currently, struct arm_pmu and related functions are only visible to
{,arch/arm/}/kernel/perf_event.c. This prevents new drivers from using
the framework.

This patch  moves declarations to asm/pmu.h, allowing new PMU drivers
to use the framework.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: remove cpu-related misnomers
Mark Rutland [Tue, 17 May 2011 10:20:11 +0000 (11:20 +0100)]
ARM: perf: remove cpu-related misnomers

Currently struct cpu_hw_events stores data on events running on a
PMU associated with a CPU. As this data is general enough to be used
for system PMUs, this name is a misnomer, and may cause confusion when
it is used for system PMUs.

Additionally, 'armpmu' is commonly used as a parameter name for an
instance of struct arm_pmu. The name is also used for a global instance
which represents the CPU's PMU.

As cpu_hw_events is now not tied to CPU PMUs, it is renamed to
pmu_hw_events, with instances of it renamed similarly. As the global
'armpmu' is CPU-specfic, it is renamed to cpu_pmu. This should make it
clearer which code is generic, and which is coupled with the CPU.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: remove event limit from pmu_hw_events
Mark Rutland [Fri, 24 Jun 2011 10:30:59 +0000 (11:30 +0100)]
ARM: perf: remove event limit from pmu_hw_events

Currently the event accounting data in pmu_hw_events is stored in
fixed-sized arrays within the structure.

This patch refactors the accounting data to allow any number of events
to be managed.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: add support for multiple PMUs
Mark Rutland [Thu, 28 Apr 2011 15:27:54 +0000 (16:27 +0100)]
ARM: perf: add support for multiple PMUs

Currently, a single static instance of struct pmu is used when
registering an ARM PMU with the main perf subsystem. This limits
the ARM perf code to supporting a single PMU.

This patch replaces the static struct pmu instance with a member
variable on struct arm_pmu. This provides bidirectional mapping
between the two structs, and therefore allows for support of multiple
PMUs. The function 'to_arm_pmu' is provided for convenience.

PMU-generic functions are also updated to use the new mapping, and
PMU-generic initialisation of the member variables is moved into a new
function: armpmu_init.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: refactor event mapping
Mark Rutland [Thu, 28 Apr 2011 14:47:10 +0000 (15:47 +0100)]
ARM: perf: refactor event mapping

Currently mapping an event type to a hardware configuration value
depends on the data being pointed to from struct arm_pmu. These fields
(cache_map, event_map, raw_event_mask) are currently specific to CPU
PMUs, and do not serve the general case well.

This patch replaces the event map pointers on struct arm_pmu with a new
'map_event' function pointer. Small shim functions are used to reuse
the existing common code.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: add type field to struct arm_pmu
Mark Rutland [Mon, 6 Jun 2011 09:37:50 +0000 (10:37 +0100)]
ARM: perf: add type field to struct arm_pmu

Currently, the ARM perf code assumes all PMUs it will handle are
CPU PMUs, having ARM_PMU_DEVICE_CPU hardcoded when reserving or
releasing hardware. This means that currently, the ARM perf code can't
support system PMUs.

This patch adds a 'type' field to struct arm_pmu, which allows the code
to reserve & release the hardware regardless of the PMU type.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: lock PMU registers per-CPU
Mark Rutland [Thu, 28 Apr 2011 09:17:04 +0000 (10:17 +0100)]
ARM: perf: lock PMU registers per-CPU

Currently, a single lock serialises access to CPU PMU registers. This
global locking is unnecessary as PMU registers are local to the CPU
they monitor.

This patch replaces the global lock with a per-CPU lock. As the lock is
in struct cpu_hw_events, PMUs providing a single cpu_hw_events instance
can be locked globally.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: remove unnecessary armpmu->stop
Mark Rutland [Mon, 8 Aug 2011 13:56:02 +0000 (14:56 +0100)]
ARM: perf: remove unnecessary armpmu->stop

As armpmu_disable will call armpmu->stop when the last event has been
removed, this is pointless and simply adds to the noise when debugging.
Additionally, due to this call occurring in a preemptible context, this
is problematic for per-cpu locking of PMU registers (where we will
attempt to access per-cpu spinlock for use with raw_spin_lock_irqsave).

This patch removes the call to armpmu->stop.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: indirect access to cpu_hw_events
Mark Rutland [Wed, 4 May 2011 08:23:51 +0000 (09:23 +0100)]
ARM: perf: indirect access to cpu_hw_events

Currently, cpu_hw_events is a global per-CPU variable. To enable
support for multiple PMUs, there needs to be a mapping from an instance
of arm_pmu to its cpu_hw_events. Additionally, as system PMUs are not
CPU-affine, they should not have this stored per-CPU.

This patch moves access to the hardware events data behind an accessor
function (arm_pmu::get_hw_events). This allows each instance to have
its own hardware event data, which can be stored per-CPU or globally as
required.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: move platform device to struct arm_pmu
Mark Rutland [Wed, 4 May 2011 08:23:15 +0000 (09:23 +0100)]
ARM: perf: move platform device to struct arm_pmu

Currently the ARM perf code supports having a single struct
platform_device to supply IRQ numbers, limiting it to supporting a
single PMU.

This patch makes a platform_device instance variable on struct arm_pmu.
This should allow for multiple PMUs to be supported in future.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: move active_events into struct arm_pmu
Mark Rutland [Wed, 27 Apr 2011 10:20:11 +0000 (11:20 +0100)]
ARM: perf: move active_events into struct arm_pmu

This patch moves the active_events counter into struct arm_pmu, in
preparation for supporting multiple PMUs. This also moves
pmu_reserve_mutex, as it is used to guard accesses to active_events.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: remove active_mask
Mark Rutland [Tue, 19 Jul 2011 08:37:10 +0000 (09:37 +0100)]
ARM: perf: remove active_mask

Currently, pmu_hw_events::active_mask is used to keep track of which
events are active in hardware. As we can stop counters and their
interrupts, this is unnecessary.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: clean up event group validation
Mark Rutland [Wed, 27 Apr 2011 15:22:21 +0000 (16:22 +0100)]
ARM: perf: clean up event group validation

Currently, event group validation compares each event's 'pmu' pointer
against the static 'pmu' pointer. This limits the code to supporting
only 1 PMU.

This patch changes the behaviour to consider an event's group leader's
'pmu' pointer as canonical for validation. This should ease later
generalisation of the code to support multiple PMUs at once.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: only register a CPU PMU when present
Mark Rutland [Wed, 27 Apr 2011 09:31:51 +0000 (10:31 +0100)]
ARM: perf: only register a CPU PMU when present

Currently, an "empty" struct pmu is registered as the CPU PMU,
regardless of whether there is a physical PMU. This burdens the
accessor functions with checks to see whether a PMU is actually
present.

This patch changes initialisation to register a PMU only if there is a
supported PMU present, and removes the checks that this change makes
redundant.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoperf: provide PMU when initing events
Mark Rutland [Thu, 11 Aug 2011 11:31:20 +0000 (12:31 +0100)]
perf: provide PMU when initing events

Currently, an event's 'pmu' field is set after pmu::event_init() is
called. This means that pmu::event_init() must figure out which struct
pmu the event was initialised from. This makes it difficult to
consolidate common event initialisation code for similar PMUs, and
very difficult to implement drivers for PMUs which can have multiple
instances (e.g. a USB controller PMU, a GPU PMU, etc).

This patch sets the 'pmu' field before initialising the event, allowing
event init code to identify the struct pmu instance easily. In the
event of failure to initialise an event, the event is destroyed via
kfree() without calling perf_event::destroy(), so this shouldn't
result in bad behaviour even if the destroy field was set before
failure to initialise was noted.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1313062280-19123-1-git-send-email-mark.rutland@arm.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
12 years agoARM: hw_breakpoint: reduce the number of WARN_ONCE invocations
Will Deacon [Thu, 4 Aug 2011 13:46:23 +0000 (14:46 +0100)]
ARM: hw_breakpoint: reduce the number of WARN_ONCE invocations

The ARM hw_breakpoint backend is currently a bit too noisy when things
start to go awry.

This patch removes a couple of over-zealous WARN_ONCE invocations and
replaces then with pr_warnings instead.

Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: hw_breakpoint: trap undef instruction exceptions in reset_ctrl_regs
Will Deacon [Mon, 8 Aug 2011 13:26:53 +0000 (14:26 +0100)]
ARM: hw_breakpoint: trap undef instruction exceptions in reset_ctrl_regs

The ARM debug registers can only be accessed if the DBGSWENABLE signal
to the core is driven HIGH by the DAP. The architecture does not provide
a way to detect the value of this signal, so the best we can do is
register an undef_hook to trap debug register co-processor accesses and
then fail if the trap is taken.

Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: hw_breakpoint: add support for multiple watchpoints
Will Deacon [Tue, 2 Aug 2011 15:16:57 +0000 (16:16 +0100)]
ARM: hw_breakpoint: add support for multiple watchpoints

ARM debug architecture 7.1 mandates that the DFAR is updated on a
watchpoint debug exception to contain the faulting virtual address
of the memory access. This allows us to determine which watchpoints
have fired and therefore report useful information to userspace.

This patch adds support for using the DFAR in the watchpoint handler,
which allows us to support multiple watchpoints on CPUs implementing
the new debug architecture.

Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: hw_breakpoint: reserve one breakpoint for watchpoint stepping
Will Deacon [Tue, 2 Aug 2011 12:01:17 +0000 (13:01 +0100)]
ARM: hw_breakpoint: reserve one breakpoint for watchpoint stepping

The current hw_breakpoint code on ARM reserves 1 breakpoint for each
watchpoint that is available. Since debug architectures prior to 7.1
are restricted to 1 watchpoint anyway, only one breakpoint was ever
reserved.

This patch changes the reservation strategy so that a single breakpoint
is reserved, regardless of the number of watchpoints. This is in
preparation for multiple-watchpoint support on debug architectures
from 7.1 onwards.

Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: hw_breakpoint: add initial Cortex-A15 (debug v7.1) support
Will Deacon [Fri, 22 Jul 2011 17:27:37 +0000 (18:27 +0100)]
ARM: hw_breakpoint: add initial Cortex-A15 (debug v7.1) support

This patch adds initial support for Cortex-A15 (debug architecture v7.1)
to the hw_breakpoint ARM backend.

Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: add mode exclusion for Cortex-A15 PMU
Will Deacon [Tue, 19 Jul 2011 12:53:36 +0000 (13:53 +0100)]
ARM: perf: add mode exclusion for Cortex-A15 PMU

The Cortex-A15 PMU implements the PMUv2 specification and therefore
has support for some mode exclusion.

This patch adds support for excluding user, kernel and hypervisor counts
from a given event.

Acked-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: allow armpmu to implement mode exclusion
Will Deacon [Tue, 19 Jul 2011 10:57:30 +0000 (11:57 +0100)]
ARM: perf: allow armpmu to implement mode exclusion

Modern PMUs allow for mode exclusion, so we no longer wish to return
-EPERM if it is requested.

This patch provides a hook in the armpmu structure for implementing
mode exclusion. The hw_perf_event initialisation is slightly delayed so
that the backend code can update the structure if required.

Acked-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: index PMU registers from zero
Will Deacon [Tue, 19 Jul 2011 21:43:28 +0000 (22:43 +0100)]
ARM: perf: index PMU registers from zero

ARM PMU code used to use 1-based indices for PMU registers. This caused
several data structures (pmu_hw_events::{active_events, used_mask, events})
to have an unused element at index zero. ARMPMU_MAX_HWEVENTS still takes
this indexing into account, and currently equates to 33.

This patch updates the core ARM perf code to use the 0th index again.

Acked-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: index Xscale and ARMv6 event counters starting from zero
Will Deacon [Tue, 19 Jul 2011 21:41:36 +0000 (22:41 +0100)]
ARM: perf: index Xscale and ARMv6 event counters starting from zero

Now that the ARMv7 PMU backend indexes event counters from zero, follow
suit and do the same for ARMv6 and Xscale.

Acked-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: index ARMv7 event counters starting from zero
Will Deacon [Tue, 19 Jul 2011 21:25:55 +0000 (22:25 +0100)]
ARM: perf: index ARMv7 event counters starting from zero

The current ARMv7 PMU backend indexes event counters from two, with
index zero being reserved and index one being used to represent the
cycle counter.

This patch tidies up the code by indexing from one instead (with zero
for the cycle counter). This allows us to remove many of the accessor
macros along with the counter enumeration and makes the code much more
readable.

Acked-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: use integers for ARMv7 event indices
Will Deacon [Tue, 19 Jul 2011 21:17:48 +0000 (22:17 +0100)]
ARM: perf: use integers for ARMv7 event indices

This patch ensures that integers are used to represent event indices in
the ARMv7 PMU backend. This ensures consistency between functions and
also with the arm_pmu structure.

Acked-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: use u32 instead of unsigned long for PMNC register
Will Deacon [Tue, 19 Jul 2011 13:55:57 +0000 (14:55 +0100)]
ARM: perf: use u32 instead of unsigned long for PMNC register

The ARMv7 perf backend mixes up u32 and unsigned long, which is rather
ugly.

This patch makes the ARMv7 PMU code consistently use the u32 type
instead.

Acked-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: use cpumask_t to record active IRQs
Will Deacon [Wed, 27 Jul 2011 14:18:59 +0000 (15:18 +0100)]
ARM: perf: use cpumask_t to record active IRQs

Commit 5dfc54e0 ("ARM: GIC: avoid routing interrupts to offline CPUs")
prevents the GIC from setting the affinity of an IRQ to a CPU with
id >= nr_cpu_ids. This was previously abused by perf on some platforms
where more IRQs were registered than possible CPUs.

This patch fixes the problem by using a cpumask_t to keep track of the
active (requested) interrupts in perf. The same effect could be achieved
by limiting the number of IRQs to the number of CPUs, but using a mask
instead will be useful for adding extended CPU hotplug support in the
future.

Acked-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: PMU: move CPU PMU platform device handling and init into perf
Will Deacon [Tue, 26 Jul 2011 21:10:28 +0000 (22:10 +0100)]
ARM: PMU: move CPU PMU platform device handling and init into perf

Once upon a time, OProfile and Perf fought hard over who could play with
the PMU. To stop all hell from breaking loose, pmu.c offered an internal
reserve/release API and took care of parsing PMU platform data passed in
from board support code.

Now that Perf has ingested OProfile, let's move the platform device
handling into the Perf driver and out of the PMU locking code.
Unfortunately, the lock has to remain to prevent Perf being bitten by
out-of-tree modules such as LTTng, which still claim a right to the PMU
when Perf isn't looking.

Acked-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoARM: perf: de-const struct arm_pmu
Mark Rutland [Fri, 15 Apr 2011 10:14:38 +0000 (11:14 +0100)]
ARM: perf: de-const struct arm_pmu

This patch removes const qualifiers from instances of struct arm_pmu,
and functions initialising them, in preparation for generalising
arm_pmu usage to system (AKA uncore) PMUs.

This will allow for dynamically modifiable structures (locks,
struct pmu) to be added as members of struct arm_pmu.

Acked-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
12 years agoMerge branch 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm
Linus Torvalds [Mon, 29 Aug 2011 23:34:07 +0000 (16:34 -0700)]
Merge branch 'fixes' of /home/rmk/linux-2.6-arm

* 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: pm: avoid writing the auxillary control register for ARMv7
  ARM: pm: some ARMv7 requires a dsb in resume to ensure correctness
  ARM: pm: arm920/926: fix number of registers saved
  ARM: pm: CPU specific code should not overwrite r1 (v:p offset)
  ARM: 7066/1: proc-v7: disable SCTLR.TE when disabling MMU
  ARM: 7065/1: kexec: ensure new kernel is entered in ARM state
  ARM: 7003/1: vexpress: Add clock definition for the SP805.
  ARM: 7051/1: cpuimx* boards: fix mach-types errors
  ARM: 7019/1: Footbridge: select CLKEVT_I8253 for ARCH_NETWINDER
  ARM: 7015/1: ARM errata: Possible cache data corruption with hit-under-miss enabled
  ARM: 7014/1: cache-l2x0: Fix L2 Cache size calculation.
  ARM: 6967/1: ep93xx: ts72xx: fix board model detection
  ARM: 6965/1: ep93xx: add model detection for ts-7300 and ts-7400 boards
  ARM: cache: detect VIPT aliasing I-cache on ARMv6
  ARM: twd: register clockevents device before enabling PPI
  ARM: realview: ensure visibility of writes during reset
  ARM: perf: make name of arm_pmu_type consistent
  ARM: perf: fix prototype of release_pmu
  ARM: fix perf build with uclibc toolchains

12 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc
Linus Torvalds [Mon, 29 Aug 2011 23:33:32 +0000 (16:33 -0700)]
Merge branch 'fixes' of git://git./linux/kernel/git/arm/linux-arm-soc

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc:
  ARM: mach-footbridge: add missing header file <video/vga.h>
  ARM: mach-orion5x: add missing header file <linux/vga.h>
  arm: fix compile failure in orion5x/dns323-setup.c
  at91: at91sam9261.c: fix typo in t2_clk alias for atmel_tcb.0
  ARM: S5P: fix bug in spdif_clk_get_rate
  ARM: EXYNOS4: Add restart hook for proper reboot
  ARM: EXYNOS4: Increase reset delay for USB HOST PHY
  ARM: S5P: add required chained_irq_enter/exit to gpio-int code
  ARM: EXYNOS4: add required chained_irq_enter/exit to eint code
  ARM: SAMSUNG: Add chained enrty/exit call to timer interrupt handler
  ARM: S3C64XX: Fix build break in PM debug
  ARM: S5PV210: Fix build warning
  ARM: EXYNOS4: Fix the IRQ definitions for MIPI CSIS device
  ARM: EXYNOS4: remove duplicated inclusion
  ARM: EXYNOS4: Fix wrong devname to support clkdev
  ARM: EXYNOS4: Use the correct regulator names on universal_c210
  ARM: SAMSUNG: Fix Section mismatch in samsung_bl_set()
  ARM: S5P64X0: Replace irq_gc_ack() with irq_gc_ack_set_bit()

12 years agoremove remaining references to nfsservctl
Stephen Rothwell [Mon, 29 Aug 2011 00:38:57 +0000 (10:38 +1000)]
remove remaining references to nfsservctl

These were missed in commit f5b940997397 "All Arch: remove linkage
for sys_nfsservctl system call" due to them having no sys_ prefix
(presumably).

Cc: NeilBrown <neilb@suse.de>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-parisc@vger.kernel.org
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: James Bottomley <James.Bottomley@hansenpartnership.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Mon, 29 Aug 2011 20:38:29 +0000 (13:38 -0700)]
Merge git://git./linux/kernel/git/davem/net

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (42 commits)
  netpoll: fix incorrect access to skb data in __netpoll_rx
  cassini: init before use in cas_interruptN.
  can: ti_hecc: Fix uninitialized spinlock in probe
  can: ti_hecc: Fix unintialized variable
  net: sh_eth: fix the compile error
  net/phy: fix DP83865 phy interrupt handler
  sendmmsg/sendmsg: fix unsafe user pointer access
  ibmveth: Fix leak when recycling skb and hypervisor returns error
  arp: fix rcu lockdep splat in arp_process()
  bridge: fix a possible use after free
  bridge: Pseudo-header required for the checksum of ICMPv6
  mcast: Fix source address selection for multicast listener report
  MAINTAINERS: Update GIT trees for network development
  ath9k: Fix PS wrappers in ath9k_set_coverage_class
  carl9170: Fix mismatch in carl9170_op_set_key mutex lock-unlock
  wl12xx: add max_sched_scan_ssids value to the hw description
  wl12xx: Fix validation of pm_runtime_get_sync return value
  wl12xx: Remove obsolete testmode NVS push command
  bcma: add uevent to the bus, to autoload drivers
  ath9k_hw: Fix STA (AR9485) bringup issue due to incorrect MAC address
  ...

12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Linus Torvalds [Mon, 29 Aug 2011 20:37:42 +0000 (13:37 -0700)]
Merge git://git./linux/kernel/git/davem/sparc

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc32,sun4d: Change IPI IRQ level to prevent collision between IPI and timer interrupt
  sparc: Remove another reference to nfsservctl

12 years agoMerge branch 'rmobile-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 29 Aug 2011 20:37:17 +0000 (13:37 -0700)]
Merge branch 'rmobile-fixes-for-linus' of git://git./linux/kernel/git/lethal/sh-3.x

* 'rmobile-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-3.x:
  ARM: mach-shmobile: sh7372 CMT3 and CMT4 clock support
  ARM: mach-shmobile: sh7372 MSIOF clock support
  ARM: mach-shmobile: clock-sh7372: fixup USB-DMAC1 settings
  ARM: mach-shmobile: clock-sh73a0: tidyup CKSCR main clock selecter
  ARM: mach-shmobile: Remove 3DG/SGX from sh7372 INTCS
  ARM: mach-shmobile: mackerel: Add USB-DMA ID
  mmc: sdhi, mmcif: zboot: Correct clock disable logic
  ARM: mach-shmobile: ag5evm: SDHI requires waiting for idle
  ARM: static should be at beginning of declaration
  ARM: mach-shmobile: Use CMT2 for timer on sh7372
  ARM: mach-shmobile: sh7372: Add USB-DMAC support

12 years agoMerge branch 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 29 Aug 2011 20:34:48 +0000 (13:34 -0700)]
Merge branch 'sh-fixes-for-linus' of git://git./linux/kernel/git/lethal/sh-3.x

* 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-3.x:
  sh: fix the compile error in setup-sh7757.c
  serial: sh-sci: report CTS as active for get_mctrl
  sh: Add unaligned memory access for PC relative intructions
  sh: Fix unaligned memory access for branches without delay slots
  sh: Fix up fallout from cpuidle changes.
  serial: sh-sci: console Runtime PM support
  sh: Fix conflicting definitions of ptrace_triggered
  serial: sh-sci: fix DMA build by including dma-mapping.h
  serial: sh-sci: Fix up default regtype probing.
  sh: intc: enable both edges GPIO interrupts on sh7372
  shwdt: fix usage of mod_timer
  clocksource: sh_cmt: wait for CMCNT on init V2

12 years agoMAINTAINERS: change framebuffer maintainer
Florian Tobias Schandinat [Sat, 27 Aug 2011 19:32:34 +0000 (19:32 +0000)]
MAINTAINERS: change framebuffer maintainer

As Paul has not much time for it I take over maintaining the
framebuffer subsystem.

Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agosparc32,sun4d: Change IPI IRQ level to prevent collision between IPI and timer interrupt
Kjetil Oftedal [Sun, 28 Aug 2011 22:16:28 +0000 (00:16 +0200)]
sparc32,sun4d: Change IPI IRQ level to prevent collision between IPI and timer interrupt

On Sun4d systems running in SMP mode, IRQ 14 is used for timer interrupts
and has a specialized interrupt handler. IPI is currently set to use IRQ 14
as well, which causes it to trigger the timer interrupt handler, and not the
IPI interrupt handler.

The IPI interrupt is therefore changed to IRQ 13, which is the highest
normally handled interrupt. This IRQ is also used for SBUS interrupts,
however there is nothing in the IPI/SBUS interrupt handlers that indicate
that they will not handle sharing the interrupt.
(IRQ 13 is indicated as audio interrupt, which is unlikely to be found in a
sun4d system)

Signed-off-by: Kjetil Oftedal <oftedal@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agosparc: Remove another reference to nfsservctl
Stephen Rothwell [Mon, 29 Aug 2011 05:43:40 +0000 (15:43 +1000)]
sparc: Remove another reference to nfsservctl

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoARM: mach-shmobile: sh7372 CMT3 and CMT4 clock support
Magnus Damm [Fri, 26 Aug 2011 05:28:42 +0000 (05:28 +0000)]
ARM: mach-shmobile: sh7372 CMT3 and CMT4 clock support

Add clock control support for sh7372 CMT hardware blocks.

No upstream sh7372 boards are making use of CMT3 + CMT4,
but the sh7372 hardware happens to come out of reset with
all CMT MSTP clocks _enabled_, so to save power we need
to implement a fix in software to shut down unused clocks.

This patch relies on the recently merged

 794d78f drivers: sh: late disabling of clocks V2

to make sure the unused clocks get disabled as expected.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
12 years agoARM: mach-shmobile: sh7372 MSIOF clock support
Magnus Damm [Fri, 26 Aug 2011 05:25:11 +0000 (05:25 +0000)]
ARM: mach-shmobile: sh7372 MSIOF clock support

Add clock control support for sh7372 MSIOF hardware blocks.

No upstream sh7372 boards are making use of MSIOF0->2,
but the sh7372 hardware happens to come out of reset with
all MSIOF MSTP clocks _enabled_, so to save power we need
to implement a fix in software to shut down unused clocks.

This patch relies on the recently merged

 794d78f drivers: sh: late disabling of clocks V2

to make sure the unused clocks get disabled as expected.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
12 years agoARM: mach-shmobile: clock-sh7372: fixup USB-DMAC1 settings
Kuninori Morimoto [Thu, 25 Aug 2011 03:47:42 +0000 (03:47 +0000)]
ARM: mach-shmobile: clock-sh7372: fixup USB-DMAC1 settings

USB-DMAC1 needs SMSTPCR4/MSTP407 controls, not MSTP214
this patch tested on mackerel board

Reported-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
12 years agoARM: mach-shmobile: clock-sh73a0: tidyup CKSCR main clock selecter
Kuninori Morimoto [Fri, 26 Aug 2011 07:27:45 +0000 (07:27 +0000)]
ARM: mach-shmobile: clock-sh73a0: tidyup CKSCR main clock selecter

MAINCKSEL is [29:28], not [27:24]

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
12 years agoARM: mach-shmobile: Remove 3DG/SGX from sh7372 INTCS
Magnus Damm [Wed, 10 Aug 2011 05:45:30 +0000 (05:45 +0000)]
ARM: mach-shmobile: Remove 3DG/SGX from sh7372 INTCS

This patch removes support for the SGX interrupt source in
the sh7372 INTCS controller.

The SGX hardware block included in sh7372 is already hooked
up to the ARM Cortex-A8 core using the INTCA controller,
so SGX users are encouraged to make use of that interrupt
source instead.

Removing support for the SGX interrupt source in INTCS
simplifies the sh7372 power management code by allowing
us to assume that only INTCA needs to be powered on to
operate the SGX hardware.

If the INTCS interrupt source would be kept then the kernel
would be forced to deal with additional dependencies that does
not follow the regular power domain hiearachy. With this
patch in place we can safely power down INTCS while the
SGX is operating.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
12 years agoMerge branch 'rmobile/dma' into rmobile-fixes-for-linus
Paul Mundt [Mon, 29 Aug 2011 07:10:24 +0000 (16:10 +0900)]
Merge branch 'rmobile/dma' into rmobile-fixes-for-linus

12 years agosh: fix the compile error in setup-sh7757.c
Yoshihiro Shimoda [Tue, 23 Aug 2011 09:15:46 +0000 (09:15 +0000)]
sh: fix the compile error in setup-sh7757.c

Fix the following build errors:

  CC      arch/sh/kernel/cpu/sh4a/setup-sh7757.o
arch/sh/kernel/cpu/sh4a/setup-sh7757.c:681: error: implicit declaration of function ‘DMA_BIT_MASK’
arch/sh/kernel/cpu/sh4a/setup-sh7757.c:681: error: initializer element is not constant
arch/sh/kernel/cpu/sh4a/setup-sh7757.c:681: error: (near initialization for ‘usb_ehci_device.dev.coherent_dma_mask’)
arch/sh/kernel/cpu/sh4a/setup-sh7757.c:705: error: initializer element is not constant
arch/sh/kernel/cpu/sh4a/setup-sh7757.c:705: error: (near initialization for ‘usb_ohci_device.dev.coherent_dma_mask’)
make[3]: *** [arch/sh/kernel/cpu/sh4a/setup-sh7757.o] Error 1

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
12 years agoserial: sh-sci: report CTS as active for get_mctrl
Yoshii Takashi [Tue, 23 Aug 2011 08:27:18 +0000 (08:27 +0000)]
serial: sh-sci: report CTS as active for get_mctrl

sh-sci.c sets hardware up and then let the HW do all flow controls.
There is no software code, nor needs to get/set real CTS signal.

But, when turning CRTSCTS on through termios, uart_set_termios() in
serial_core.c checks CTS, and stops TX if it is inactive at the moment.

Because sci_get_mctrl() returns a fixed value DTR|RTS|DSR but CTS,
the sequence
  open -> set CRTSCTS -> write
hit the case and stop working, no more outputs.

This patch makes sci_get_mctrl() report CTS in addition.

Signed-off-by: Takashi YOSHII <takashi.yoshii.zj@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
12 years agosh: Add unaligned memory access for PC relative intructions
Phil Edworthy [Wed, 24 Aug 2011 10:43:59 +0000 (10:43 +0000)]
sh: Add unaligned memory access for PC relative intructions

This adds unaligned memory access support for the following instructions:
  mov.w @(disp,PC),Rn
  mov.l @(disp,PC),Rn

These instructions are often used on SH2A toolchains.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
12 years agosh: Fix unaligned memory access for branches without delay slots
Phil Edworthy [Mon, 22 Aug 2011 15:56:08 +0000 (15:56 +0000)]
sh: Fix unaligned memory access for branches without delay slots

This patch just clears the return code for those cases where an
unaligned memory access occurs on branch instructions without a
delay slot.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
12 years agoLinux 3.1-rc4
Linus Torvalds [Mon, 29 Aug 2011 04:16:01 +0000 (21:16 -0700)]
Linux 3.1-rc4

12 years agoMerge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Sun, 28 Aug 2011 17:05:39 +0000 (10:05 -0700)]
Merge branch 'pm-fixes' of git://git./linux/kernel/git/rafael/linux-pm

* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ARM: mach-shmobile: sh7372 LCDC1 suspend fix V2 (incremental)
  OMAP: omap_device: only override _noirq methods, not normal suspend/resume
  PM / Runtime: Correct documentation of pm_runtime_irq_safe()
  ARM: mach-shmobile: sh7372 LCDC1 suspend fix
  sh-sci / PM: Use power.irq_safe
  PM: Use spinlock instead of mutex in clock management functions

12 years agoARM: pm: avoid writing the auxillary control register for ARMv7
Russell King [Fri, 26 Aug 2011 21:44:59 +0000 (22:44 +0100)]
ARM: pm: avoid writing the auxillary control register for ARMv7

For ARMv7 kernels running in the non-secure world, writing to the
auxillary control register causes an abort, so we must avoid directly
writing the auxillary control register.  If the ACR has already been
reinitialized by SoC code, don't try to restore it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: pm: some ARMv7 requires a dsb in resume to ensure correctness
Russell King [Fri, 26 Aug 2011 23:37:38 +0000 (00:37 +0100)]
ARM: pm: some ARMv7 requires a dsb in resume to ensure correctness

Add a dsb after the isb to ensure that the previous writes to the
CP15 registers take effect before we enable the MMU.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: pm: arm920/926: fix number of registers saved
Russell King [Sat, 27 Aug 2011 10:43:14 +0000 (11:43 +0100)]
ARM: pm: arm920/926: fix number of registers saved

ARM920 and ARM926 save four registers, not three.  Fix the size of
the suspend region required.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: pm: CPU specific code should not overwrite r1 (v:p offset)
Russell King [Sat, 27 Aug 2011 10:37:58 +0000 (11:37 +0100)]
ARM: pm: CPU specific code should not overwrite r1 (v:p offset)

r1 stores the v:p offset from the CPU invariant resume code, and is
expected to be preserved by the CPU specific code.  Overwriting it is
not a good idea.

We've managed to get away with it on sa1100 platforms because most
happen to have PHYS_OFFSET == PAGE_OFFSET, but that may not be the
case depending on kernel configuration.  So fix this latent bug.

This fixes xsc3 as well which was saving and restoring this register
independently.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7066/1: proc-v7: disable SCTLR.TE when disabling MMU
Will Deacon [Fri, 26 Aug 2011 15:34:51 +0000 (16:34 +0100)]
ARM: 7066/1: proc-v7: disable SCTLR.TE when disabling MMU

cpu_v7_reset disables the MMU and then branches to the provided address.
On Thumb-2 kernels, we should take care to clear the Thumb Exception
enable bit in the System Control Register, otherwise this may wreak
havok in the code to which we are branching (for example, an ARM kernel
image via kexec).

Reviewed-by: Dave Martin <dave.martin@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7065/1: kexec: ensure new kernel is entered in ARM state
Will Deacon [Fri, 26 Aug 2011 15:32:57 +0000 (16:32 +0100)]
ARM: 7065/1: kexec: ensure new kernel is entered in ARM state

Commit 540b5738 ("ARM: 6999/1: head, zImage: Always Enter the kernel in
ARM state") mandates that the kernel should be entered in ARM state.

If a Thumb-2 kernel kexecs a new kernel image, we need to ensure that
we change state when branching to the new code. This patch replaces a
mov pc, lr with a bx lr on Thumb-2 kernels so that we transition to ARM
state if need be.

Reviewed-by: Dave Martin <dave.martin@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1...
Linus Torvalds [Sat, 27 Aug 2011 16:32:08 +0000 (09:32 -0700)]
Merge branch 'fixes' of git://git./linux/kernel/git/ieee1394/linux1394-2.6

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  firewire: sbp2: fix panic after rmmod with slow targets

12 years agoARM: mach-shmobile: sh7372 LCDC1 suspend fix V2 (incremental)
Magnus Damm [Sat, 27 Aug 2011 12:21:00 +0000 (14:21 +0200)]
ARM: mach-shmobile: sh7372 LCDC1 suspend fix V2 (incremental)

This patch updates the recently submitted
"Associate the HDMI clock together with LCDC1 on sh7372"
to V2 with the following change:
 - Use lcdc1_device on AP4EVB to build properly.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
12 years agoAll Arch: remove linkage for sys_nfsservctl system call
NeilBrown [Fri, 26 Aug 2011 22:03:11 +0000 (18:03 -0400)]
All Arch: remove linkage for sys_nfsservctl system call

The nfsservctl system call is now gone, so we should remove all
linkage for it.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge branch 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/keith...
Linus Torvalds [Fri, 26 Aug 2011 22:00:49 +0000 (15:00 -0700)]
Merge branch 'drm-intel-fixes' of git://git./linux/kernel/git/keithp/linux-2.6

* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/keithp/linux-2.6:
  drm/i915: Fix wrong initializer for "locked" variable in assert_panel_unlocked
  i915: do not setup intel_backlight twice

12 years agoMerge branch 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Fri, 26 Aug 2011 20:10:06 +0000 (13:10 -0700)]
Merge branch 'usb-linus' of git://git./linux/kernel/git/gregkh/usb-2.6

* 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (30 commits)
  USB: ftdi_sio: add Calao reference board support
  USB option driver K3765/K4505 avoid CDC_DATA interface
  USB: option: add YUGA device id to driver
  usb: s5p-ehci: fix a NULL pointer deference
  USB: EHCI: Do not rely on PORT_SUSPEND to stop USB resuming in ehci_bus_resume().
  USB option driver add PID of Huawei Vodafone K4605
  USB option driver add PID of Huawei Vodafone K3806
  xhci: Handle zero-length isochronous packets.
  USB: Avoid NULL pointer deref in usb_hcd_alloc_bandwidth.
  usb: musb: gadget: fix error path
  usb: gadget: f_phonet: unlock in error case
  usb: musb: blackfin: include prefetch head file
  usb: musb: tusb6010: fix compilation
  usb: gadget: renesas_usbhs: fix DMA build by including dma-mapping.h
  usb: musb: cppi: fix build errors due to DBG and missing musb variable
  usb: musb: ux500: replace missing DBG with dev_dbg
  usb: musb: ux500: set dma config for both src and dst
  usb: musb: fix oops on musb_gadget_pullup
  usb: host: ehci-omap: fix .remove and failure handling path of .probe(v1)
  usb: gadget: hid: don't STALL when processing a HID Descriptor request
  ...

12 years agoMerge branch 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Fri, 26 Aug 2011 20:06:06 +0000 (13:06 -0700)]
Merge branch 'tty-linus' of git://git./linux/kernel/git/gregkh/tty-2.6

* 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6:
  omap-serial: Allow IXON and IXOFF to be disabled.
  TTY: serial, document ignoring of uart->ops->startup error
  TTY: pty, fix pty counting
  8250: Fix race condition in serial8250_backup_timeout().
  serial/8250_pci: delete duplicate data definition
  8250_pci: add support for Rosewill RC-305 4x serial port card
  tty: Add "spi:" prefix for spi modalias
  atmel_serial: fix atmel_default_console_device
  serial: 8250_pnp: add Intermec CV60 touchscreen device
  drivers/serial/ucc_uart.c: Fix compiler warning
  pch_uart: Set PCIe bus number using probe parameter
  serial: samsung: Fix build error

12 years agoMerge branch 'driver-core-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 26 Aug 2011 20:05:09 +0000 (13:05 -0700)]
Merge branch 'driver-core-linus' of git://git./linux/kernel/git/gregkh/driver-core-2.6

* 'driver-core-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6:
  drivers:misc: ti-st: fix unexpected UART close
  drivers:misc: ti-st: free skb on firmware download
  drivers:misc: ti-st: wait for completion at fail
  drivers:misc: ti-st: reinit completion before send
  drivers:misc: ti-st: fail-safe on wrong pkt type
  drivers:misc: ti-st: reinit completion on ver read
  drivers:misc:ti-st: platform hooks for chip states
  drivers:misc: ti-st: avoid a misleading dbg msg
  base/devres.c: quiet sparse noise about context imbalance
  pti: add missing CONFIG_PCI dependency
  drivers/base/devtmpfs.c: correct annotation of `setup_done'
  driver core: fix kernel-doc warning in platform.c
  firmware: fix google/gsmi.c build warning

12 years agoMerge branch 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Fri, 26 Aug 2011 20:03:12 +0000 (13:03 -0700)]
Merge branch 'staging-linus' of git://git./linux/kernel/git/gregkh/staging-2.6

* 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6:
  staging: tidspbridge: fix compilation on dsp clock functions
  staging: octeon-ethernet: Add missing #includes.
  Staging: zcache: signedness bug in tmem_get()
  staging: zcache: fix crash on high memory swap
  staging: brcm80211: SPARC build error fix
  staging: brcm80211: fix compile error on non-x86 archs since 3.0 kernel

12 years agonetpoll: fix incorrect access to skb data in __netpoll_rx
Eric Dumazet [Fri, 26 Aug 2011 06:26:15 +0000 (06:26 +0000)]
netpoll: fix incorrect access to skb data in __netpoll_rx

__netpoll_rx() doesnt properly handle skbs with small header

pskb_may_pull() or pskb_trim_rcsum() can change skb->data, we must
reload it.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agocassini: init before use in cas_interruptN.
françois romieu [Thu, 25 Aug 2011 05:02:49 +0000 (05:02 +0000)]
cassini: init before use in cas_interruptN.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Spotted-by: Thomas Jarosch <thomas.jarosch@intra2net.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agocan: ti_hecc: Fix uninitialized spinlock in probe
Abhilash K V [Tue, 23 Aug 2011 03:05:57 +0000 (03:05 +0000)]
can: ti_hecc: Fix uninitialized spinlock in probe

In ti_hecc_probe(), the spinlock  priv->mbx_lock is not
inited, causing a spinlock lockup BUG.

Acked-by: Anant Gole <anantgole@ti.com>
Signed-off-by: Abhilash K V <abhilash.kv@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agocan: ti_hecc: Fix unintialized variable
Abhilash K V [Tue, 23 Aug 2011 03:05:48 +0000 (03:05 +0000)]
can: ti_hecc: Fix unintialized variable

In ti_hecc_xmit(), local variable "data" is not initialized before
being used.
This initialization got inadvertently removed in the following patch:

can: Unify droping of invalid tx skbs and netdev stats

Acked-by: Anant Gole <anantgole@ti.com>
Signed-off-by: Abhilash K V <abhilash.kv@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: sh_eth: fix the compile error
Yoshihiro Shimoda [Mon, 22 Aug 2011 23:26:33 +0000 (23:26 +0000)]
net: sh_eth: fix the compile error

Fix the following build error:

  CC      drivers/net/sh_eth.o
drivers/net/sh_eth.c:1115: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘sh_eth_interrupt’
drivers/net/sh_eth.c: In function ‘sh_eth_open’:
drivers/net/sh_eth.c:1387: error: implicit declaration of function ‘request_irq’
drivers/net/sh_eth.c:1387: error: ‘sh_eth_interrupt’ undeclared (first use in this function)
drivers/net/sh_eth.c:1387: error: (Each undeclared identifier is reported only once
drivers/net/sh_eth.c:1387: error: for each function it appears in.)
drivers/net/sh_eth.c:1391: error: ‘IRQF_SHARED’ undeclared (first use in this function)
drivers/net/sh_eth.c:1424: error: implicit declaration of function ‘free_irq’
make[2]: *** [drivers/net/sh_eth.o] Error 1

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet/phy: fix DP83865 phy interrupt handler
Giuseppe CAVALLARO [Mon, 22 Aug 2011 21:07:14 +0000 (21:07 +0000)]
net/phy: fix DP83865 phy interrupt handler

According to the DP83865 datasheet we need to clear
the interrupt status bit by writing a 1 to the
corresponding bit in INT_CLEAR (2:0 are reserved).

Proposed and tested by Thorsten.

Signed-off-by: Thorsten Schubert <tshu@msc-ge.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoMerge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
Linus Torvalds [Fri, 26 Aug 2011 16:28:22 +0000 (09:28 -0700)]
Merge branch 'for-linus' of git://git390.marist.edu/linux-2.6

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] memory hotplug: only unassign assigned increments
  [S390] Change default action from reipl to stop for on_restart
  [S390] arch/s390/kernel/ipl.c: correct error detection check
  [S390] drivers/s390/block/dasd_ioctl.c: add missing kfree
  [S390] nss,initrd: kernel image and initrd must be in different segments

12 years agosfi: table irq 0xFF means 'no interrupt'
Kirill A. Shutemov [Fri, 26 Aug 2011 11:20:59 +0000 (12:20 +0100)]
sfi: table irq 0xFF means 'no interrupt'

According to the SFI specification irq number 0xFF means device has no
interrupt or interrupt attached via GPIO.

Currently, we don't handle this special case and set irq field in
*_board_info structs to 255.  It leads to confusion in some drivers.
Accelerometer driver tries to register interrupt 255, fails and prints
"Cannot get IRQ" to dmesg.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Fri, 26 Aug 2011 16:01:30 +0000 (09:01 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: (32 commits)
  ALSA: hda: Conexant: Allow different output types to share DAC
  ASoC: Correct element count for WM8996 sidetone HPF
  ASoC: Tegra: wm8903 machine driver: Drop Ventana support
  ASoC: Add samsung maintainer
  ASoC: Add Springbank I/O card to Speyside Kconfig
  ALSA: hda/conexant - Enable ADC-switching for auto-mic mode, too
  ALSA: hda - Fix double-headphone/speaker paths for Cxt auto-parser
  ALSA: hda - Update jack-sense info even when no automute is set
  ALSA: hda - Fix output-path initialization for Realtek auto-parser
  sound/soc/fsl/mpc8610_hpcd.c: add missing of_node_put
  sound/soc/fsl/p1022_ds.c: add missing of_node_put
  sound/soc/ep93xx/ep93xx-i2s.c: add missing kfree
  sound/soc/kirkwood/kirkwood-i2s.c: add missing kfree
  ASoC: soc-core: use GFP_KERNEL flag for kmalloc in snd_soc_cnew
  sound/soc/fsl/fsl_dma.c: add missing of_node_put
  ASoC: Clear completions from late WM8996 FLL lock IRQs
  ASoC: Clear any outstanding WM8962 FLL lock completions before waiting
  ASoC: Ensure we only run Speyside WM8962 bias level callbacks once
  ASoC: Fix configuration of WM8996 input enables
  ASoC: WM8996 record paths need AIFCLK
  ...

12 years agoMerge branch 'at91/fixes' of git+ssh://master.kernel.org/pub/scm/linux/kernel/git...
Arnd Bergmann [Fri, 26 Aug 2011 15:34:00 +0000 (15:34 +0000)]
Merge branch 'at91/fixes' of git+ssh:///linux/kernel/git/arm/linux-arm-soc into fixes

12 years agoMerge branch 'fixes' of git://git.jdl.com/software/linux-3.0 into fixes
Arnd Bergmann [Fri, 26 Aug 2011 15:27:34 +0000 (15:27 +0000)]
Merge branch 'fixes' of git://git.jdl.com/software/linux-3.0 into fixes

12 years agoMerge branch 'samsung/fixes' of git+ssh://master.kernel.org/pub/scm/linux/kernel...
Arnd Bergmann [Fri, 26 Aug 2011 15:08:19 +0000 (15:08 +0000)]
Merge branch 'samsung/fixes' of git+ssh:///linux/kernel/git/arm/linux-arm-soc into fixes

12 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
John W. Linville [Fri, 26 Aug 2011 14:33:51 +0000 (10:33 -0400)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless into for-davem

12 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux...
Paul Mundt [Fri, 26 Aug 2011 07:49:51 +0000 (16:49 +0900)]
Merge branch 'master' of git://git./linux/kernel/git/torvalds/linux into sh-fixes-for-linus

12 years agoMerge branch 'fix/asoc' into for-linus
Takashi Iwai [Fri, 26 Aug 2011 07:29:43 +0000 (09:29 +0200)]
Merge branch 'fix/asoc' into for-linus

12 years agoarch/powerpc/sysdev/fsl_rio.c: correct IECSR register clear value
Liu Gang-B34182 [Thu, 25 Aug 2011 22:59:25 +0000 (15:59 -0700)]
arch/powerpc/sysdev/fsl_rio.c: correct IECSR register clear value

This bug causes the IECSR register clear failure.  In this case, the RETE
(retry error threshold exceeded) interrupt will be generated and cannot be
cleared.  So the related ISR may be called persistently.

The RETE bit in IECSR is cleared by writing a 1 to it.

Signed-off-by: Liu Gang <Gang.Liu@freescale.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agodrivers/rtc/rtc-s3c.c: allow multiple open / allow no-ioctl-open'ed rtc to have irq.
MyungJoo Ham [Thu, 25 Aug 2011 22:59:24 +0000 (15:59 -0700)]
drivers/rtc/rtc-s3c.c: allow multiple open / allow no-ioctl-open'ed rtc to have irq.

The previous rtc-s3c had two issues related with its IRQ.

1. Users cannot open rtc multiple times because an open operation
   calls request_irq on the same IRQ.  (e.g., two user processes wants to
   open and read RTC time from rtc-s3c at the same time)

2. If alarm is set and no one has the rtc opened with filesystem
   (either the alarm is set by kernel/boot-loader or user set an alarm and
   closed rtc dev file), the pending bit is not cleared and no further
   interrupt is invoked.  When the alarm is used by the system itself such
   as a resume from suspend-to-RAM or other Low-power modes/idle, this is
   a critical issue.

This patch mitigates these issues by calling request_irq at probe and
free_irq at remove.

Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agodrivers/rtc/rtc-s3c.c: correct debug messages
MyungJoo Ham [Thu, 25 Aug 2011 22:59:22 +0000 (15:59 -0700)]
drivers/rtc/rtc-s3c.c: correct debug messages

RTC-S3C used to print out debug messages incorrectly.  This patch
corrects incorrect outputs.  (undecoded bcd numbers, incorrectly decoded
register values)

This patch affects the pr-debug messages only.

Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agodrivers/leds/leds-bd2802.c: bd2802_unregister_led_classdev() should unregister all...
Axel Lin [Thu, 25 Aug 2011 22:59:21 +0000 (15:59 -0700)]
drivers/leds/leds-bd2802.c: bd2802_unregister_led_classdev() should unregister all registered leds

bd2802_unregister_led_classdev() should unregister all registered
instances of led_classdev class that had registered by
bd2802_register_led_classdev().

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Kim Kyuwon <q1.kim@samsung.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agocris: add arch/cris/include/asm/serial.h
WANG Cong [Thu, 25 Aug 2011 22:59:20 +0000 (15:59 -0700)]
cris: add arch/cris/include/asm/serial.h

Fix the following build errors:

  drivers/tty/serial/8250_early.c:160: error: 'BASE_BAUD' undeclared (first use in this function): 1 errors in 1 logs
  drivers/tty/serial/8250_early.c:37:24: error: asm/serial.h: No such file or directory: 1 errors in 1 logs

I am not sure if (1843200 / 16) is suitable for cris, but most other
arch's define it as this value.

Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agodrivers/misc/ab8500-pwm.c: fix modalias
Axel Lin [Thu, 25 Aug 2011 22:59:20 +0000 (15:59 -0700)]
drivers/misc/ab8500-pwm.c: fix modalias

Since 43cc71eed12 ("platform: prefix MODALIAS with "platform:""), the
platform modalias is prefixed with "platform:".

This patch changes the MODULE_ALIAS to "platform:ab8500-pwm".

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Arun Murthy <arun.murthy@stericsson.com>
Cc: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agodrivers/misc/fsa9480.c: fix a leak of the IRQ during init failure
Axel Lin [Thu, 25 Aug 2011 22:59:19 +0000 (15:59 -0700)]
drivers/misc/fsa9480.c: fix a leak of the IRQ during init failure

Make sure we are passing the same cookie in all calls to
request_threaded_irq() and free_irq().

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Donggeun Kim <dg77.kim@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agobacklight: fix module alias prefix for adp8870_bl
Axel Lin [Thu, 25 Aug 2011 22:59:18 +0000 (15:59 -0700)]
backlight: fix module alias prefix for adp8870_bl

This is an i2c driver, not a platform driver, thus use "i2c" prefix for
the module alias.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agobacklight: add a callback 'notify_after' for backlight control
Dilan Lee [Thu, 25 Aug 2011 22:59:17 +0000 (15:59 -0700)]
backlight: add a callback 'notify_after' for backlight control

We need a callback to do some things after pwm_enable, pwm_disable
and pwm_config.

Signed-off-by: Dilan Lee <dilee@nvidia.com>
Reviewed-by: Robert Morell <rmorell@nvidia.com>
Reviewed-by: Arun Murthy <arun.murthy@stericsson.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>