diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index 1038688568926ea82b208358011a8771f34c8ac5..0b3226cbf3f25d4f6b3695769377c14a729109a5 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -572,7 +572,7 @@ static int blkcg_reset_stats(struct cgroup_subsys_state *css,
 
 const char *blkg_dev_name(struct blkcg_gq *blkg)
 {
-	if (!blkg->q->disk || !blkg->q->disk->bdi->dev)
+	if (!blkg->q->disk)
 		return NULL;
 	return bdi_dev_name(blkg->q->disk->bdi);
 }