Will Deacon df77abcafc ARM: 7099/1: futex: preserve oldval in SMP __futex_atomic_op ... The SMP implementation of __futex_atomic_op clobbers oldval with the status flag from the exclusive store. This causes it to always read as zero when performing the FUTEX_OP_CMP_* operation. This patch updates the ARM __futex_atomic_op implementations to take a tmp argument, allowing us to store the strex status flag without overwriting the register containing oldval. Cc: stable@kernel.org Reported-by: Minho Ban <mhban@samsung.com> Reviewed-by: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>		2011-09-26 12:36:47 +01:00
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asm	ARM: 7099/1: futex: preserve oldval in SMP __futex_atomic_op	2011-09-26 12:36:47 +01:00