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powerpc: Simplify test in __dma_sync()

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This simplification helps the compiler. We now have only one test
instead of two, so it reduces the number of branches.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <oss@buserror.net>
This commit is contained in:
Christophe Leroy 2016-02-09 17:08:29 +01:00 committed by Scott Wood
parent affe587bac
commit 8478d7f091
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/mm/dma-noncoherent.c
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@ -327,7 +327,7 @@ void __dma_sync(void *vaddr, size_t size, int direction)
* invalidate only when cache-line aligned otherwise there is
* the potential for discarding uncommitted data from the cache
*/
if ((start & (L1_CACHE_BYTES - 1)) || (size & (L1_CACHE_BYTES - 1)))
if ((start | end) & (L1_CACHE_BYTES - 1))
flush_dcache_range(start, end);
else
invalidate_dcache_range(start, end);