[PATCH] powerpc : dma-mapping : Check null condition for dev->archdata.dma_ops

[Nikhil Badola]

Modifies get_dma_ops() implementation on ppc arch to check null condition
for dev->archdata.dma_ops; returns common dma_direct_ops structure in
case its NULL

Signed-off-by: Nikhil Badola <nikhil.badola at freescale.com>
---
 arch/powerpc/include/asm/dma-mapping.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h
index 150866b..d73bae8 100644
--- a/arch/powerpc/include/asm/dma-mapping.h
+++ b/arch/powerpc/include/asm/dma-mapping.h
@@ -86,10 +86,12 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
 	 */
 	if (unlikely(dev == NULL))
 		return NULL;
-
-	return dev->archdata.dma_ops;
+	if (dev->archdata.dma_ops)
+		return dev->archdata.dma_ops;
+	return &dma_direct_ops;
 }
 
+
 static inline void set_dma_ops(struct device *dev, struct dma_map_ops *ops)
 {
 	dev->archdata.dma_ops = ops;
-- 
1.7.11.7