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>
git-mirror · Feb 25, 2013 · fab112a · fab112a
1 parent d09e133
commit fab112a
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/arch/arm/include/asm/device.h b/arch/arm/include/asm/device.h
@@ -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