--- xorg-server-1.6.5/hw/xfree86/common/xf86Bus.c.orig	2009-10-11 21:52:40.000000000 -0500
+++ xorg-server-1.6.5/hw/xfree86/common/xf86Bus.c	2010-01-30 02:42:03.730664249 -0600
@@ -1515,7 +1515,7 @@
      * type specific. Any conflicts should be checked at this
      * stage
      */
-    if (!pEnt->access->pAccess
+    if (!pEnt->access->pAccess && pEnt->busAcc
 	&& (pEnt->entityProp & (state == SETUP ? NEED_VGA_ROUTED_SETUP :
 				NEED_VGA_ROUTED)))
 	((BusAccPtr)pEnt->busAcc)->set_f(pEnt->busAcc);