[PATCH] arm64: cmpxchg: update macros to prevent warnings

[Mark Brown]

On Fri, Dec 20, 2013 at 02:10:02PM +0000, Catalin Marinas wrote:

> I merged the previous one (should be in -next as of last night), I guess
> it's the same since the patch doesn't have a version number. But I

It's the same patch, I was resending it because it had been a while with
no response.

> wonder whether uses of cmpxchg without checking the return value are
> sane.

IIRC it was used as part of another macro which did have some reasonable
uses without checking the return value.
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