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authorMarek Szyprowski <m.szyprowski@samsung.com>2012-02-29 14:45:28 +0100
committerMarek Szyprowski <m.szyprowski@samsung.com>2012-05-21 15:06:12 +0200
commit553ac78877242b6d8b591323731df304140d0f99 (patch)
treefe826ee0134b8a97df9350648f85a94edd06f042 /arch/arm/include/asm
parent6b6f770b573903f8a7d1cfab1fc662685653f413 (diff)
ARM: dma-mapping: introduce DMA_ERROR_CODE constant
Replace all uses of ~0 with DMA_ERROR_CODE, what should make the code easier to read. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Tested-By: Subash Patel <subash.ramaswamy@linaro.org>
Diffstat (limited to 'arch/arm/include/asm')
-rw-r--r--arch/arm/include/asm/dma-mapping.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index cb3b7c981c4..6a838da03c5 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -10,6 +10,8 @@
#include <asm-generic/dma-coherent.h>
#include <asm/memory.h>
+#define DMA_ERROR_CODE (~0)
+
#ifdef __arch_page_to_dma
#error Please update to __arch_pfn_to_dma
#endif
@@ -123,7 +125,7 @@ extern int dma_set_mask(struct device *, u64);
*/
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
- return dma_addr == ~0;
+ return dma_addr == DMA_ERROR_CODE;
}
/*