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ARM: dma-mapping: Add macro to_dma_iommu_mapping() 

This can be built without CONFIG_ARM_DMA_USE_IOMMU.

Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
This commit is contained in:
Hiroshi Doyu 2013-01-24 15:16:56 +02:00 committed by Marek Szyprowski
parent d09e1333ec
commit fab112a394
1 changed files with 6 additions and 0 deletions
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6
arch/arm/include/asm/device.h
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@ -27,4 +27,10 @@ struct pdev_archdata {
#endif
};
#ifdef CONFIG_ARM_DMA_USE_IOMMU
#define to_dma_iommu_mapping(dev) ((dev)->archdata.mapping)
#else
#define to_dma_iommu_mapping(dev) NULL
#endif
#endif