dm verity: remove pointless comparison

Remove num < 0 test in verity_ctr because num is unsigned.
(Found by Coverity.)

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

diff --git a/drivers/md/dm-verity.c b/drivers/md/dm-verity.c
index 0d2e812..9804da1 100644 (file)
--- a/drivers/md/dm-verity.c
+++ b/drivers/md/dm-verity.c
@@ -695,8 +695,8 @@ static int verity_ctr(struct dm_target *ti, unsigned argc, char **argv)
                goto bad;
        }
 
-       if (sscanf(argv[0], "%d%c", &num, &dummy) != 1 ||
-           num < 0 || num > 1) {
+       if (sscanf(argv[0], "%u%c", &num, &dummy) != 1 ||
+           num > 1) {
                ti->error = "Invalid version";
                r = -EINVAL;
                goto bad;