[PATCH] missing dma_sync_single_range_for{cpu,device} on alpha

no-op as all dma_sync_... there.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/asm-alpha/dma-mapping.h

@@ -55,12 +55,14 @@ int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
 
 int dma_set_mask(struct device *dev, u64 mask);
 
-#define dma_sync_single_for_cpu(dev, addr, size, dir)	  do { } while (0)
-#define dma_sync_single_for_device(dev, addr, size, dir)  do { } while (0)
-#define dma_sync_single_range(dev, addr, off, size, dir)  do { } while (0)
-#define dma_sync_sg_for_cpu(dev, sg, nents, dir)	  do { } while (0)
-#define dma_sync_sg_for_device(dev, sg, nents, dir)	  do { } while (0)
-#define dma_cache_sync(dev, va, size, dir)		  do { } while (0)
+#define dma_sync_single_for_cpu(dev, addr, size, dir)	  ((void)0)
+#define dma_sync_single_for_device(dev, addr, size, dir)  ((void)0)
+#define dma_sync_single_range(dev, addr, off, size, dir)  ((void)0)
+#define dma_sync_sg_for_cpu(dev, sg, nents, dir)	  ((void)0)
+#define dma_sync_sg_for_device(dev, sg, nents, dir)	  ((void)0)
+#define dma_cache_sync(dev, va, size, dir)		  ((void)0)
+#define dma_sync_single_range_for_cpu(dev, addr, offset, size, dir)	((void)0)
+#define dma_sync_single_range_for_device(dev, addr, offset, size, dir)	((void)0)
 
 #define dma_get_cache_alignment()			  L1_CACHE_BYTES