===== drivers/block/ioctl.c 1.62 vs edited =====
--- 1.62/drivers/block/ioctl.c	2004-10-03 00:05:10 -04:00
+++ edited/drivers/block/ioctl.c	2004-10-22 13:06:16 -04:00
@@ -195,7 +195,8 @@
 		if (disk->fops->ioctl) {
 			ret = disk->fops->ioctl(inode, file, cmd, arg);
 			/* -EINVAL to handle old uncorrected drivers */
-			if (ret != -EINVAL && ret != -ENOTTY)
+			if (ret != -EINVAL && ret != -ENOTTY &&
+			    ret != -EOPNOTSUPP)
 				return ret;
 		}
 		fsync_bdev(bdev);