tree b266adc9aebcda0a7eccd7adbd07a4a5aab3ceee
parent e35ac62d2202e31307c0f9b278a61e484c4727f2
author Will Deacon <will.deacon@arm.com> 1376327006 +0100
committer Russell King <rmk+kernel@arm.linux.org.uk> 1376421763 +0100

ARM: 7811/1: locks: use early clobber in arch_spin_trylock

The res variable is written before we've finished with the input
operands (namely the lock address), so ensure that we mark it as `early
clobber' to avoid unintended register sharing.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>