[dm-devel] [PATCH] dm flakey: fix corrupt_bio_byte error path

[Mike Snitzer <snitzer redhat com>]

If no arguments were provided to the corrupt_bio_byte feature an error
should be returned immediately.

Reported-by: Zdenek Kabelac <zkabelac redhat com> (coverity run)
Signed-off-by: Mike Snitzer <snitzer redhat com>
---
 drivers/md/dm-flakey.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/drivers/md/dm-flakey.c b/drivers/md/dm-flakey.c
index 89f73ca..f84c080 100644
--- a/drivers/md/dm-flakey.c
+++ b/drivers/md/dm-flakey.c
@@ -81,8 +81,10 @@ static int parse_features(struct dm_arg_set *as, struct flakey_c *fc,
 		 * corrupt_bio_byte <Nth_byte> <direction> <value> <bio_flags>
 		 */
 		if (!strcasecmp(arg_name, "corrupt_bio_byte")) {
-			if (!argc)
+			if (!argc) {
 				ti->error = "Feature corrupt_bio_byte requires parameters";
+				return -EINVAL;
+			}
 
 			r = dm_read_arg(_args + 1, as, &fc->corrupt_bio_byte, &ti->error);
 			if (r)
-- 
1.7.4.4