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| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2010-08-11 01:03:25 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-11 15:59:21 (GMT) |
| commit | 3b9c6c11f519718d618f5d7c9508daf78b207f6f (patch) | |
| tree | 6c99992e25b9305fbe3977dff30f5eeb445f25e0 /arch/blackfin/include | |
| parent | d80e0d96a328cc864a1cb359f545a6ed0c61812d (diff) | |
| download | linux-3b9c6c11f519718d618f5d7c9508daf78b207f6f.tar.xz | |
dma-mapping: remove dma_is_consistent API
Architectures implement dma_is_consistent() in different ways (some
misinterpret the definition of API in DMA-API.txt). So it hasn't been so
useful for drivers. We have only one user of the API in tree. Unlikely
out-of-tree drivers use the API.
Even if we fix dma_is_consistent() in some architectures, it doesn't look
useful at all. It was invented long ago for some old systems that can't
allocate coherent memory at all. It's better to export only APIs that are
definitely necessary for drivers.
Let's remove this API.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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/blackfin/include')
| -rw-r--r-- | arch/blackfin/include/asm/dma-mapping.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/blackfin/include/asm/dma-mapping.h b/arch/blackfin/include/asm/dma-mapping.h index 6694a0f..bbf4610 100644 --- a/arch/blackfin/include/asm/dma-mapping.h +++ b/arch/blackfin/include/asm/dma-mapping.h @@ -21,7 +21,6 @@ void dma_free_coherent(struct device *dev, size_t size, void *vaddr, #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) #define dma_supported(d, m) (1) -#define dma_is_consistent(d, h) (1) static inline int dma_set_mask(struct device *dev, u64 dma_mask) |