[U-Boot] [PATCH 4/5] include: dma: Update the function description for dma_memcpy

[tien.fong.chee at intel.com]

From: Tien Fong Chee <tien.fong.chee at intel.com>

Update the dma_memcpy description on return argument for DMA330 driver.

Signed-off-by: Tien Fong Chee <tien.fong.chee at intel.com>
---
 include/dma.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/dma.h b/include/dma.h
index 0a0c9dd..b825c1e 100644
--- a/include/dma.h
+++ b/include/dma.h
@@ -79,8 +79,8 @@ int dma_get_device(u32 transfer_type, struct udevice **devp);
  * @dst - destination pointer
  * @src - souce pointer
  * @len - data length to be copied
- * @return - on successful transfer returns no of bytes
-	     transferred and on failure return error code.
+ * @return - on successful transfer returns no of bytes or zero(for DMA330)
+ *	     transferred and on failure return error code.
  */
 int dma_memcpy(struct udevice *dev, void *dst, void *src, size_t len);
 
-- 
2.2.0