--- multipath-tools-0.4.7/libmultipath/discovery.c.orig	2006-11-28 10:14:01.000000000 -0600
+++ multipath-tools-0.4.7/libmultipath/discovery.c	2006-11-28 10:43:29.000000000 -0600
@@ -433,7 +433,7 @@
 
 	if (sysfs_get_rev(sysfs_path, pp->dev,
 			  pp->rev, SCSI_REV_SIZE))
-		return 1;
+		pp->rev[0] = '\0';
 
 	condlog(3, "%s: rev = %s", pp->dev, pp->rev);