diff -u --recursive linux-2.5.2-pre8/drivers/md/md.c linux-2.5.x/drivers/md/md.c
--- linux-2.5.2-pre8/drivers/md/md.c	Sun Jan  6 11:28:53 2002
+++ linux-2.5.x/drivers/md/md.c	Sun Jan  6 11:30:03 2002
@@ -641,7 +641,7 @@
 	int err = 0;
 	struct block_device *bdev;
 
-	bdev = bdget(rdev->dev);
+	bdev = bdget(kdev_t_to_nr(rdev->dev));
 	if (!bdev)
 		return -ENOMEM;
 	err = blkdev_get(bdev, FMODE_READ|FMODE_WRITE, 0, BDEV_RAW);