[PATCH] Move valid_dma_direction() from x86_64 to generic code

As suggested by Muli Ben-Yehuda this function is moved to generic code as
may be useful for all archs.

[akpm@osdl.org: fix]
Signed-off-by: Rolf Eike Beer <eike-kernel@sf-tec.de>
Cc: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 0 insertions, 7 deletions

diff --git a/include/asm-x86_64/dma-mapping.h b/include/asm-x86_64/dma-mapping.h
index b6da83dcc7a6..10174b110a5c 100644
--- a/include/asm-x86_64/dma-mapping.h
+++ b/include/asm-x86_64/dma-mapping.h
@@ -55,13 +55,6 @@ extern dma_addr_t bad_dma_address;
 extern struct dma_mapping_ops* dma_ops;
 extern int iommu_merge;
 
-static inline int valid_dma_direction(int dma_direction)
-{
-        return ((dma_direction == DMA_BIDIRECTIONAL) ||
-                (dma_direction == DMA_TO_DEVICE) ||
-                (dma_direction == DMA_FROM_DEVICE));
-}
-
 static inline int dma_mapping_error(dma_addr_t dma_addr)
 {
         if (dma_ops->mapping_error)