tree 8bd44a9893de75dde44a568294e510ae4aef87ab
parent ac411e41ec065daa867b5668b6e71ea1aff7b36a
author Bang Li <libang.linuxer@gmail.com> 1647655396 +0800
committer Vineet Gupta <vgupta@kernel.org> 1650318425 -0700

ARC: remove redundant READ_ONCE() in cmpxchg loop

This patch reverts commit 7082a29c22ac ("ARC: use ACCESS_ONCE in cmpxchg
loop").

It is not necessary to use READ_ONCE() because cmpxchg contains barrier. We
can get it from commit d57f727264f1 ("ARC: add compiler barrier to LLSC
based cmpxchg").

Signed-off-by: Bang Li <libang.linuxer@gmail.com>
Signed-off-by: Vineet Gupta <vgupta@kernel.org>