btrfs-progs: fix broken 'device scan' arguments parsing

Commit 52179e4fea41e55f31c92cd033a0b53a5107b4f4 'btrfs-progs: unify argc
min/max checking' breaks 'btrfs device scan' command when no argument
was given. Fix this.

Signed-off-by: Yauhen Kharuzhy <yauhen.kharuzhy@zavadatar.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/cmds-device.c b/cmds-device.c
index 3f800e6..fff05e4 100644 (file)
--- a/cmds-device.c
+++ b/cmds-device.c
@@ -249,7 +249,7 @@ static int cmd_device_scan(int argc, char **argv)
        if (all && check_argc_max(argc - optind, 1))
                usage(cmd_device_scan_usage);
 
-       if (all || argc - optind == 1) {
+       if (all || argc - optind == 0) {
                printf("Scanning for Btrfs filesystems\n");
                ret = btrfs_scan_lblkid();
                error_on(ret, "error %d while scanning", ret);