diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 344f34746c10..4af7b080c6c7 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1929,10 +1929,12 @@ static long loop_control_ioctl(struct file *file, unsigned int cmd,
 			break;
 		if (lo->lo_state != Lo_unbound) {
 			ret = -EBUSY;
+			mutex_unlock(&loop_ctl_mutex);
 			break;
 		}
 		if (atomic_read(&lo->lo_refcnt) > 0) {
 			ret = -EBUSY;
+			mutex_unlock(&loop_ctl_mutex);
 			break;
 		}
 		lo->lo_disk->private_data = NULL;