diff --git a/drivers/misc/mei/dma-ring.c b/drivers/misc/mei/dma-ring.c
index e5d800e68cb1..651e77ef82bd 100644
--- a/drivers/misc/mei/dma-ring.c
+++ b/drivers/misc/mei/dma-ring.c
@@ -124,6 +124,8 @@ void mei_dma_ring_reset(struct mei_device *dev)
  * @buf: data buffer
  * @offset: offset in slots.
  * @n: number of slots to copy.
+ *
+ * Return: number of bytes copied
  */
 static size_t mei_dma_copy_from(struct mei_device *dev, unsigned char *buf,
 				u32 offset, u32 n)
@@ -144,6 +146,8 @@ static size_t mei_dma_copy_from(struct mei_device *dev, unsigned char *buf,
  * @buf: data buffer
  * @offset: offset in slots.
  * @n: number of slots to copy.
+ *
+ * Return: number of bytes copied
  */
 static size_t mei_dma_copy_to(struct mei_device *dev, unsigned char *buf,
 			      u32 offset, u32 n)