From: Al Viro Date: Tue, 30 Jan 2007 13:24:00 +0000 (+0000) Subject: [PATCH] dma-mapping.h stubs fix X-Git-Tag: v2.6.20-rc7~21 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6a13f66043cd755fc7e19f8e0fbb5bfcdf470e74;p=linux-2.6 [PATCH] dma-mapping.h stubs fix do { } while(0) is not a good imitation of function returning void; use ((void)0) instead. Signed-off-by: Al Viro Signed-off-by: Linus Torvalds --- diff --git a/include/asm-alpha/dma-mapping.h b/include/asm-alpha/dma-mapping.h index 1919d72f4c..75a1aff5b5 100644 --- a/include/asm-alpha/dma-mapping.h +++ b/include/asm-alpha/dma-mapping.h @@ -41,9 +41,9 @@ int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, #define dma_map_single(dev, va, size, dir) virt_to_phys(va) #define dma_map_page(dev, page, off, size, dir) (page_to_pa(page) + off) -#define dma_unmap_single(dev, addr, size, dir) do { } while (0) -#define dma_unmap_page(dev, addr, size, dir) do { } while (0) -#define dma_unmap_sg(dev, sg, nents, dir) do { } while (0) +#define dma_unmap_single(dev, addr, size, dir) ((void)0) +#define dma_unmap_page(dev, addr, size, dir) ((void)0) +#define dma_unmap_sg(dev, sg, nents, dir) ((void)0) #define dma_mapping_error(addr) (0) diff --git a/include/asm-powerpc/dma-mapping.h b/include/asm-powerpc/dma-mapping.h index 7c7de87bd8..a19a6f1a1c 100644 --- a/include/asm-powerpc/dma-mapping.h +++ b/include/asm-powerpc/dma-mapping.h @@ -37,9 +37,9 @@ extern void __dma_sync_page(struct page *page, unsigned long offset, */ #define __dma_alloc_coherent(gfp, size, handle) NULL -#define __dma_free_coherent(size, addr) do { } while (0) -#define __dma_sync(addr, size, rw) do { } while (0) -#define __dma_sync_page(pg, off, sz, rw) do { } while (0) +#define __dma_free_coherent(size, addr) ((void)0) +#define __dma_sync(addr, size, rw) ((void)0) +#define __dma_sync_page(pg, off, sz, rw) ((void)0) #endif /* ! CONFIG_NOT_COHERENT_CACHE */ @@ -251,7 +251,7 @@ dma_map_single(struct device *dev, void *ptr, size_t size, } /* We do nothing. */ -#define dma_unmap_single(dev, addr, size, dir) do { } while (0) +#define dma_unmap_single(dev, addr, size, dir) ((void)0) static inline dma_addr_t dma_map_page(struct device *dev, struct page *page, @@ -266,7 +266,7 @@ dma_map_page(struct device *dev, struct page *page, } /* We do nothing. */ -#define dma_unmap_page(dev, handle, size, dir) do { } while (0) +#define dma_unmap_page(dev, handle, size, dir) ((void)0) static inline int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, @@ -286,7 +286,7 @@ dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, } /* We don't do anything here. */ -#define dma_unmap_sg(dev, sg, nents, dir) do { } while (0) +#define dma_unmap_sg(dev, sg, nents, dir) ((void)0) #endif /* CONFIG_PPC64 */