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| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2012-02-29 14:45:28 +0100 |
|---|---|---|
| committer | Marek Szyprowski <m.szyprowski@samsung.com> | 2012-05-21 15:06:12 +0200 |
| commit | 553ac78877242b6d8b591323731df304140d0f99 (patch) | |
| tree | fe826ee0134b8a97df9350648f85a94edd06f042 /arch/arm/include/asm/dma-mapping.h | |
| parent | ARM: dma-mapping: use pr_* instread of printk (diff) | |
| download | linux-553ac78877242b6d8b591323731df304140d0f99.tar.xz linux-553ac78877242b6d8b591323731df304140d0f99.zip | |
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/dma-mapping.h')
| -rw-r--r-- | arch/arm/include/asm/dma-mapping.h | 4 |
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 cb3b7c981c4b..6a838da03c5b 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; } /* |