No need to check the parameters for DM_LIST_VERSIONS_CMD
--- diff/drivers/md/dm-ioctl.c	2004-02-18 09:07:29.000000000 +0000
+++ source/drivers/md/dm-ioctl.c	2004-02-18 09:08:37.000000000 +0000
@@ -1203,7 +1203,9 @@
 	param->flags &= ~DM_BUFFER_FULL_FLAG;
 
 	/* Ignores parameters */
-	if (cmd == DM_REMOVE_ALL_CMD || cmd == DM_LIST_DEVICES_CMD)
+	if (cmd == DM_REMOVE_ALL_CMD ||
+	    cmd == DM_LIST_DEVICES_CMD ||
+	    cmd == DM_LIST_VERSIONS_CMD)
 		return 0;
 
 	/* Unless creating, either name or uuid but not both */