diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index f301e6ae220cfa964941d2a13546f3cfde7b62a5..179bdfc4d03a6d6901a4a92593a2913732c09814 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -5151,7 +5151,6 @@ static int run(mddev_t *mddev)
 
 		mddev->queue->backing_dev_info.congested_data = mddev;
 		mddev->queue->backing_dev_info.congested_fn = raid5_congested;
-		mddev->queue->queue_lock = &conf->device_lock;
 
 		chunk_size = mddev->chunk_sectors << 9;
 		blk_queue_io_min(mddev->queue, chunk_size);