[PATCH] alpha: dma-mapping.h: add "struct scatterlist;"

[Alexey Dobriyan <adobriyan@gmail.com>]

On alpha-jensen:

  CC      drivers/base/platform.o
In file included from include/linux/dma-mapping.h:24,
                 from drivers/base/platform.c:16:
include/asm/dma-mapping.h:36: warning: "struct scatterlist" declared inside parameter list
include/asm/dma-mapping.h:36: warning: its scope is only this definition or declaration, which is probably not what you want

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---

 include/asm-alpha/dma-mapping.h |    1 +
 1 file changed, 1 insertion(+)

--- a/include/asm-alpha/dma-mapping.h
+++ b/include/asm-alpha/dma-mapping.h
@@ -30,6 +30,7 @@
 
 #else	/* no PCI - no IOMMU. */
 
+struct scatterlist;
 void *dma_alloc_coherent(struct device *dev, size_t size,
 			 dma_addr_t *dma_handle, gfp_t gfp);
 int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,


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