there is an unexpected word 'a' in the comments that need to be dropped

file - drivers/mtd/ubi/vmt.c
line - 626,779

* Returns zero if volume is all right and a a negative error code if not.

changed to:

* Returns zero if volume is all right and a negative error code if not.

Signed-off-by: Jiang Jian <jiangjian@cdjrlc.com>
---
 drivers/mtd/ubi/vmt.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/ubi/vmt.c b/drivers/mtd/ubi/vmt.c
index 6ea95ade4ca6..8fcc0bdf0635 100644
--- a/drivers/mtd/ubi/vmt.c
+++ b/drivers/mtd/ubi/vmt.c
@@ -623,7 +623,7 @@ void ubi_free_volume(struct ubi_device *ubi, struct ubi_volume *vol)
  * @ubi: UBI device description object
  * @vol_id: volume ID
  *
- * Returns zero if volume is all right and a a negative error code if not.
+ * Returns zero if volume is all right and a negative error code if not.
  */
 static int self_check_volume(struct ubi_device *ubi, int vol_id)
 {
@@ -776,7 +776,7 @@ static int self_check_volume(struct ubi_device *ubi, int vol_id)
  * self_check_volumes - check information about all volumes.
  * @ubi: UBI device description object
  *
- * Returns zero if volumes are all right and a a negative error code if not.
+ * Returns zero if volumes are all right and a negative error code if not.
  */
 static int self_check_volumes(struct ubi_device *ubi)
 {
-- 
2.17.1