Commit-ID: a0b00ca84b3ecb9eebd62ad34880d8cc0d988c8a
Gitweb: http://git.kernel.org/tip/a0b00ca84b3ecb9eebd62ad34880d8cc0d988c8a
Author: FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx>
AuthorDate: Fri, 10 Jul 2009 10:04:56 +0900
Committer: FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx>
CommitDate: Tue, 28 Jul 2009 14:19:19 +0900
ia64: add dma_capable() to replace is_buffer_dma_capable()
dma_capable() eventually replaces is_buffer_dma_capable(), which tells
if a memory area is dma-capable or not. The problem of
is_buffer_dma_capable() is that it doesn't take a pointer to struct
device so it doesn't work for POWERPC.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx>
---
arch/ia64/include/asm/dma-mapping.h | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/arch/ia64/include/asm/dma-mapping.h b/arch/ia64/include/asm/dma-mapping.h
index 5a61b5c..88d0f86 100644
--- a/arch/ia64/include/asm/dma-mapping.h
+++ b/arch/ia64/include/asm/dma-mapping.h
@@ -69,6 +69,14 @@ dma_set_mask (struct device *dev, u64 mask)
return 0;
}
+static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
+{
+ if (!dev->dma_mask)
+ return 0;
+
+ return addr + size <= *dev->dma_mask;
+}
+
extern int dma_get_cache_alignment(void);
static inline void
--
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