Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

[linux-2.6-microblaze.git] / include / linux / dma-direction.h

diff --git a/include/linux/dma-direction.h b/include/linux/dma-direction.h
index 9c96e30..a2fe457 100644 (file)
--- a/include/linux/dma-direction.h
+++ b/include/linux/dma-direction.h
@@ -9,4 +9,10 @@ enum dma_data_direction {
        DMA_NONE = 3,
 };
 
-#endif
+static inline int valid_dma_direction(enum dma_data_direction dir)
+{
+       return dir == DMA_BIDIRECTIONAL || dir == DMA_TO_DEVICE ||
+               dir == DMA_FROM_DEVICE;
+}
+
+#endif /* _LINUX_DMA_DIRECTION_H */