--- src/sys/dev/raid/vinum/vinumio.c	2006/09/10 01:26:36	1.16
+++ src/sys/dev/raid/vinum/vinumio.c	2006/11/05 11:40:45	1.17
@@ -33,7 +33,7 @@
  * otherwise) arising in any way out of the use of this software, even if
  * advised of the possibility of such damage.
  *
- * $Id: vinumio.c,v 1.16 2006/09/10 01:26:36 dillon Exp $
+ * $Id: vinumio.c,v 1.17 2006/11/05 11:40:45 corecode Exp $
  * $FreeBSD: src/sys/dev/vinum/vinumio.c,v 1.52.2.6 2002/05/02 08:43:44 grog Exp $
  * $DragonFly$
  */
@@ -136,6 +136,9 @@ open_drive(struct drive *drive, struct p
 
     drive->dev = udev2dev(makeudev(devmajor, devminor), 0);
 
+    if (drive->dev == NOCDEV)
+	return ENODEV;
+
     drive->dev->si_iosize_max = DFLTPHYS;
     if (dev_is_good(drive->dev))
 	drive->lasterror = dev_dopen(drive->dev, FWRITE, 0, proc0.p_ucred);