diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 7555ddc5289fda675ca4a5cb1617f8a0032b9f8f..a12c450e55fa92ecbc883d280cb1cfb9312aee58 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -2096,21 +2096,7 @@ static void scrub_submit(struct scrub_ctx *sctx)
 	sbio = sctx->bios[sctx->curr];
 	sctx->curr = -1;
 	scrub_pending_bio_inc(sctx);
-
-	if (!sbio->bio->bi_bdev) {
-		/*
-		 * this case should not happen. If btrfs_map_block() is
-		 * wrong, it could happen for dev-replace operations on
-		 * missing devices when no mirrors are available, but in
-		 * this case it should already fail the mount.
-		 * This case is handled correctly (but _very_ slowly).
-		 */
-		printk_ratelimited(KERN_WARNING
-			"BTRFS: scrub_submit(bio bdev == NULL) is unexpected!\n");
-		bio_endio(sbio->bio, -EIO);
-	} else {
-		btrfsic_submit_bio(READ, sbio->bio);
-	}
+	btrfsic_submit_bio(READ, sbio->bio);
 }
 
 static int scrub_add_page_to_rd_bio(struct scrub_ctx *sctx,