diff --git a/drivers/md/dm-rq.c b/drivers/md/dm-rq.c
index 288064e94e52611b32965a8643d111de5949eeb4..fc4eaed2d986be4bdec39026d3af845ed86cc2d0 100644
--- a/drivers/md/dm-rq.c
+++ b/drivers/md/dm-rq.c
@@ -750,6 +750,14 @@ static blk_status_t dm_mq_queue_rq(struct blk_mq_hw_ctx *hctx,
 	struct mapped_device *md = tio->md;
 	struct dm_target *ti = md->immutable_target;
 
+	/*
+	 * blk-mq's unquiesce may come from outside events, such as
+	 * elevator switch, updating nr_requests or others, and request may
+	 * come during suspend, so simply ask for blk-mq to requeue it.
+	 */
+	if (unlikely(test_bit(DMF_BLOCK_IO_FOR_SUSPEND, &md->flags)))
+		return BLK_STS_RESOURCE;
+
 	if (unlikely(!ti)) {
 		int srcu_idx;
 		struct dm_table *map;