tree 2d3f9322f15171499a6b579a1a06d6497dc5ba08
parent afa31d8eb86fc2f25083e675d57ac8173a98f999
author Will Deacon <will.deacon@arm.com> 1376327045 +0100
committer Russell King <rmk+kernel@arm.linux.org.uk> 1376421764 +0100

ARM: 7812/1: rwlocks: retry trylock operation if strex fails on free lock

Commit 15e7e5c1ebf5 ("ARM: 7749/1: spinlock: retry trylock operation if
strex fails on free lock") modifying our arch_spin_trylock to retry the
acquisition if the lock appeared uncontended, but the strex failed.

This patch does the same for rwlocks, which were missed by the original
patch.

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