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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2010-08-11 05:03:25 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-11 19:59:21 +0400
commit3b9c6c11f519718d618f5d7c9508daf78b207f6f (patch)
tree6c99992e25b9305fbe3977dff30f5eeb445f25e0 /arch/ia64
parentd80e0d96a328cc864a1cb359f545a6ed0c61812d (diff)
downloadlinux-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/ia64')
-rw-r--r--arch/ia64/include/asm/dma-mapping.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/ia64/include/asm/dma-mapping.h b/arch/ia64/include/asm/dma-mapping.h
index 8d52deed3750..a2e7368a0150 100644
--- a/arch/ia64/include/asm/dma-mapping.h
+++ b/arch/ia64/include/asm/dma-mapping.h
@@ -97,6 +97,4 @@ dma_cache_sync (struct device *dev, void *vaddr, size_t size,
mb();
}
-#define dma_is_consistent(d, h) (1) /* all we do is coherent memory... */
-
#endif /* _ASM_IA64_DMA_MAPPING_H */