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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2010-08-10 21:03:22 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-11 11:59:21 -0400
commit4565f0170dfc849b3629c27d769db800467baa62 (patch)
treea2c70fb6f2f4826749b704ed83557623ca95bca5 /arch/alpha
parenta6eb9fe105d5de0053b261148cee56c94b4720ca (diff)
dma-mapping: unify dma_get_cache_alignment implementations
dma_get_cache_alignment returns the minimum DMA alignment. Architectures defines it as ARCH_DMA_MINALIGN (formally ARCH_KMALLOC_MINALIGN). So we can unify dma_get_cache_alignment implementations. Note that some architectures implement dma_get_cache_alignment wrongly. dma_get_cache_alignment() should return the minimum DMA alignment. So fully-coherent architectures should return 1. This patch also fixes this issue. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/alpha')
-rw-r--r--arch/alpha/include/asm/dma-mapping.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/alpha/include/asm/dma-mapping.h b/arch/alpha/include/asm/dma-mapping.h
index 1bce8169733c..b3423d96acc7 100644
--- a/arch/alpha/include/asm/dma-mapping.h
+++ b/arch/alpha/include/asm/dma-mapping.h
@@ -44,6 +44,5 @@ static inline int dma_set_mask(struct device *dev, u64 mask)
44#define dma_is_consistent(d, h) (1) 44#define dma_is_consistent(d, h) (1)
45 45
46#define dma_cache_sync(dev, va, size, dir) ((void)0) 46#define dma_cache_sync(dev, va, size, dir) ((void)0)
47#define dma_get_cache_alignment() L1_CACHE_BYTES
48 47
49#endif /* _ALPHA_DMA_MAPPING_H */ 48#endif /* _ALPHA_DMA_MAPPING_H */