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android_kernel_google_msm/arch/powerpc/lib
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Paul E. McKenney 0b36b7f617 powerpc: Restore registers on error exit from csum_partial_copy_generic() 
commit 8f21bd0090 upstream.

The csum_partial_copy_generic() function saves the PowerPC non-volatile
r14, r15, and r16 registers for the main checksum-and-copy loop.
Unfortunately, it fails to restore them upon error exit from this loop,
which results in silent corruption of these registers in the presumably
rare event of an access exception within that loop.

This commit therefore restores these register on error exit from the loop.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[bwh: Backported to 3.2: register name macros use lower-case 'r']
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-09 10:51:21 -07:00
..
alloc.c Disintegrate asm/system.h for PowerPC 2012-03-28 18:30:02 +01:00
checksum_32.S
checksum_64.S powerpc: Restore registers on error exit from csum_partial_copy_generic() 2014-07-09 10:51:21 -07:00
checksum_wrappers_64.c powerpc: various straight conversions from module.h --> export.h 2011-10-31 19:30:44 -04:00
code-patching.c
copy_32.S
copypage_64.S powerpc: Simplify 4k/64k copy_page logic 2011-05-19 14:30:42 +10:00
copyuser_64.S powerpc: POWER7 optimised copy_to_user/copy_from_user using VMX 2011-12-19 14:40:40 +11:00
copyuser_power7.S powerpc: POWER7 optimised copy_to_user/copy_from_user using VMX 2011-12-19 14:40:40 +11:00
copyuser_power7_vmx.c Disintegrate asm/system.h for PowerPC 2012-03-28 18:30:02 +01:00
crtsavres.S powerpc: Add vr save/restore functions 2014-05-18 05:25:56 -07:00
devres.c powerpc: various straight conversions from module.h --> export.h 2011-10-31 19:30:44 -04:00
div64.S
feature-fixups-test.S powerpc: Ensure the else case of feature sections will fit 2011-01-21 14:08:33 +11:00
feature-fixups.c powerpc: Copy down exception vectors after feature fixups 2011-11-16 14:47:54 +11:00
hweight_64.S powerpc: Hardcode popcnt instructions for old assemblers 2010-12-09 15:35:30 +11:00
ldstfp.S
locks.c powerpc: Remove FW_FEATURE ISERIES from arch code 2012-03-21 11:16:11 +11:00
Makefile powerpc: POWER7 optimised copy_to_user/copy_from_user using VMX 2011-12-19 14:40:40 +11:00
mem_64.S
memcpy_64.S
rheap.c powerpc: various straight conversions from module.h --> export.h 2011-10-31 19:30:44 -04:00
sstep.c powerpc: fix typo 'CONFIG_PPC_CPU' 2014-07-06 18:49:20 -07:00
string.S
usercopy_64.c