diff options
| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2010-08-10 21:03:22 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-11 11:59:21 -0400 |
| commit | 4565f0170dfc849b3629c27d769db800467baa62 (patch) | |
| tree | a2c70fb6f2f4826749b704ed83557623ca95bca5 /arch/alpha | |
| parent | a6eb9fe105d5de0053b261148cee56c94b4720ca (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.h | 1 |
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 */ |