md: remove the autoscan partition re-read

devfs is long gone, and autoscan works just fine without this these days.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: NeilBrown <neilb@suse.de>
Acked-by: Song Liu <song@kernel.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/md/md-autodetect.c

@@ -240,16 +240,6 @@ static void __init md_setup_drive(void)
 			err = ksys_ioctl(fd, RUN_ARRAY, 0);
 		if (err)
 			printk(KERN_WARNING "md: starting md%d failed\n", minor);
-		else {
-			/* reread the partition table.
-			 * I (neilb) and not sure why this is needed, but I cannot
-			 * boot a kernel with devfs compiled in from partitioned md
-			 * array without it
-			 */
-			ksys_close(fd);
-			fd = ksys_open(name, 0, 0);
-			ksys_ioctl(fd, BLKRRPART, 0);
-		}
 		ksys_close(fd);
 	}
 }