msm: kgsl: Remove msm-dcvs pwrscale driver

The msm-dcvs pwrscale driver is no longer in development. Remove it to
avoid bitrot and simplify future target development.

Change-Id: Ic0dedbad81c2afb4bfbb377ee1a2330e115c0e71
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Carter Cooper <ccooper@codeaurora.org>

Conflicts:
	drivers/gpu/msm/adreno.c
	drivers/gpu/msm/kgsl_pwrscale_msm.c
	drivers/gpu/msm/kgsl_trace.h
thermal/mpdec: export throttle indicator and don't input boost if we are throttled

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
thermal: raise thermal values back to normal levels

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

Conflicts:
	arch/arm/mach-msm/lge/board-8974-hammerhead.cd
thermal: fix incompatibilies caused by file renaming

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

Conflicts:
	drivers/thermal/Makefile
	drivers/thermal/msm_thermal.c
msm_mpdecision: update inputboost frequencies

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
msm_mpdecision: remove per_cpu suspend value
This is unneccessary and produces overhead when checking/setting over loops

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

Conflicts:
	arch/arm/mach-msm/msm_mpdecision.c
msm_mpdecision: offload definitions to header

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
thermal: when we restore the original limits use the norm_min freq from mpdecision inputboost

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
msm_mpdecision: fix whitespaces throughout the file to comply with linux coding styles

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

Conflicts:
	arch/arm/mach-msm/msm_mpdecision.c
msm_mpdecision: early continue get_slowest_cpu() and _rate() to save some cycles

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
msm_mpdecision: move startdelay to init to save cycles on each work call

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
msm_mpdecision: also verify that boost frequencies are > minfreq

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
msm_mpdecision: fix boost_time not respecting sysfs changes
This fixes issue #17

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
msm_mpdecision: add missing #ifdefs around thermal related code
This fixes issue #19 (compilation without thermal)

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
msm_mpdecision: add input boost triggers
This fixes issue #27 - No boost event triggered
&
issue #28 - Power button should trigger boost_freq

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
ARM: 7668/1: fix memset-related crashes caused by recent GCC (4.7.2) optimizations

Recent GCC versions (e.g. GCC-4.7.2) perform optimizations based on
assumptions about the implementation of memset and similar functions.
The current ARM optimized memset code does not return the value of
its first argument, as is usually expected from standard implementations.

For instance in the following function:

void debug_mutex_lock_common(struct mutex *lock, struct mutex_waiter *waiter)
{
	memset(waiter, MUTEX_DEBUG_INIT, sizeof(*waiter));
	waiter->magic = waiter;
	INIT_LIST_HEAD(&waiter->list);
}

compiled as:

800554d0 <debug_mutex_lock_common>:
800554d0:       e92d4008        push    {r3, lr}
800554d4:       e1a00001        mov     r0, r1
800554d8:       e3a02010        mov     r2, #16 ; 0x10
800554dc:       e3a01011        mov     r1, #17 ; 0x11
800554e0:       eb04426e        bl      80165ea0 <memset>
800554e4:       e1a03000        mov     r3, r0
800554e8:       e583000c        str     r0, [r3, #12]
800554ec:       e5830000        str     r0, [r3]
800554f0:       e5830004        str     r0, [r3, #4]
800554f4:       e8bd8008        pop     {r3, pc}

GCC assumes memset returns the value of pointer 'waiter' in register r0; causing
register/memory corruptions.

This patch fixes the return value of the assembly version of memset.
It adds a 'mov' instruction and merges an additional load+store into
existing load/store instructions.
For ease of review, here is a breakdown of the patch into 4 simple steps:

Step 1
======
Perform the following substitutions:
ip -> r8, then
r0 -> ip,
and insert 'mov ip, r0' as the first statement of the function.
At this point, we have a memset() implementation returning the proper result,
but corrupting r8 on some paths (the ones that were using ip).

Step 2
======
Make sure r8 is saved and restored when (! CALGN(1)+0) == 1:

save r8:
-       str     lr, [sp, #-4]!
+       stmfd   sp!, {r8, lr}

and restore r8 on both exit paths:
-       ldmeqfd sp!, {pc}               @ Now <64 bytes to go.
+       ldmeqfd sp!, {r8, pc}           @ Now <64 bytes to go.
(...)
        tst     r2, #16
        stmneia ip!, {r1, r3, r8, lr}
-       ldr     lr, [sp], #4
+       ldmfd   sp!, {r8, lr}

Step 3
======
Make sure r8 is saved and restored when (! CALGN(1)+0) == 0:

save r8:
-       stmfd   sp!, {r4-r7, lr}
+       stmfd   sp!, {r4-r8, lr}

and restore r8 on both exit paths:
        bgt     3b
-       ldmeqfd sp!, {r4-r7, pc}
+       ldmeqfd sp!, {r4-r8, pc}
(...)
        tst     r2, #16
        stmneia ip!, {r4-r7}
-       ldmfd   sp!, {r4-r7, lr}
+       ldmfd   sp!, {r4-r8, lr}

Step 4
======
Rewrite register list "r4-r7, r8" as "r4-r8".

Signed-off-by: Ivan Djelic <ivan.djelic@parrot.com>
Reviewed-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Dirk Behme <dirk.behme@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
(cherry picked from commit 75d5cce5814697852c76939689f6b7ee232943c8)
ARM: 7670/1: fix the memset fix

Commit 455bd4c430b0 ("ARM: 7668/1: fix memset-related crashes caused by
recent GCC (4.7.2) optimizations") attempted to fix a compliance issue
with the memset return value.  However the memset itself became broken
by that patch for misaligned pointers.

This fixes the above by branching over the entry code from the
misaligned fixup code to avoid reloading the original pointer.

Also, because the function entry alignment is wrong in the Thumb mode
compilation, that fixup code is moved to the end.

While at it, the entry instructions are slightly reworked to help dual
issue pipelines.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Tested-by: Alexander Holler <holler@ahsoftware.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
(cherry picked from commit 8b6a5fa8cee7bf945b601a7209e7d2e71e25da9e)
jbd2: Fix use after free after error in jbd2_journal_dirty_metadata()

commit 91aa11fae1cf8c2fd67be0609692ea9741cdcc43 upstream.

When jbd2_journal_dirty_metadata() returns error,
__ext4_handle_dirty_metadata() stops the handle. However callers of this
function do not count with that fact and still happily used now freed
handle. This use after free can result in various issues but very likely
we oops soon.

The motivation of adding __ext4_journal_stop() into
__ext4_handle_dirty_metadata() in commit 9ea7a0df seems to be only to
improve error reporting. So replace __ext4_journal_stop() with
ext4_journal_abort_handle() which was there before that commit and add
WARN_ON_ONCE() to dump stack to provide useful information.

Reported-by: Sage Weil <sage@inktank.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

(cherry picked from commit 9cfae3e2f1cac477673d211e9f6a06248dda5b8a)

Conflicts:
	fs/ext4/ext4_jbd2.c
msm_mpdecision: Fixing: arch/arm/mach-msm/msm_mpdecision.c:1211:3: error: label 'err_fb_register'
	Error when commiting into m7 repo
msm_mpdecision: fix early_suspend compilation

This was not changed because we do not compile with early suspend
and hence didn't encounter any errors. Fix it.

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>