diff --git a/block/blk-mq.c b/block/blk-mq.c
index 9d463f7563bc..9c8dc70020bc 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -4069,8 +4069,9 @@ EXPORT_SYMBOL(blk_mq_init_queue);
  * blk_mq_destroy_queue - shutdown a request queue
  * @q: request queue to shutdown
  *
- * This shuts down a request queue allocated by blk_mq_init_queue() and drops
- * the initial reference.  All future requests will failed with -ENODEV.
+ * This shuts down a request queue allocated by blk_mq_init_queue(). All future
+ * requests will be failed with -ENODEV. The caller is responsible for dropping
+ * the reference from blk_mq_init_queue() by calling blk_put_queue().
  *
  * Context: can sleep
  */