1 files changed, 10 insertions, 0 deletions

diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 89b7e1a605b8..ce29b8151198 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -142,6 +142,16 @@ static inline int dma_set_seg_boundary(struct device *dev, unsigned long mask)
                 return -EIO;
 }
 
+#ifdef CONFIG_HAS_DMA
+static inline int dma_get_cache_alignment(void)
+{
+#ifdef ARCH_DMA_MINALIGN
+        return ARCH_DMA_MINALIGN;
+#endif
+        return 1;
+}
+#endif
+
 /* flags for the coherent memory api */
 #define DMA_MEMORY_MAP                  0x01
 #define DMA_MEMORY_IO                   0x02