--- pciutils-2.1.10/lib/access.c.foo	Wed Feb 12 15:44:05 2003
+++ pciutils-2.1.10/lib/access.c	Wed Feb 12 15:44:33 2003
@@ -180,7 +180,8 @@
 void
 pci_scan_bus(struct pci_access *a)
 {
-  a->methods->scan(a);
+  if (a->methods)
+    a->methods->scan(a);
 }
 
 struct pci_dev *
