Messages in this thread Patch in this message | | | From | Christophe Leroy <> | Subject | [PATCH v7 21/23] powerpc: Simplify test in __dma_sync() | Date | Tue, 9 Feb 2016 11:23:47 +0100 (CET) |
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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> --- v2: new v3: no change v4: no change v5: no change v6: no change v7: no change
arch/powerpc/mm/dma-noncoherent.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/mm/dma-noncoherent.c b/arch/powerpc/mm/dma-noncoherent.c index 169aba4..2dc74e5 100644 --- a/arch/powerpc/mm/dma-noncoherent.c +++ b/arch/powerpc/mm/dma-noncoherent.c @@ -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); -- 2.1.0
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