tree 7449e24549e4ddee931518e6781f630a63b50933
parent 0ea366f5e1b6413a6095dce60ea49ae51e468b61
author Will Deacon <will.deacon@arm.com> 1433436397 +0100
committer Will Deacon <will.deacon@arm.com> 1438007333 +0100

arm64: atomics: implement atomic{,64}_cmpxchg using cmpxchg

We don't need duplicate cmpxchg implementations, so use cmpxchg to
implement atomic{,64}_cmpxchg, like we do for xchg already.

Reviewed-by: Steve Capper <steve.capper@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>