diff --git a/arch/mn10300/unit-asb2305/pci-asb2305.h b/arch/mn10300/unit-asb2305/pci-asb2305.h
index 1194fe486b01..7fa66a0e4624 100644
--- a/arch/mn10300/unit-asb2305/pci-asb2305.h
+++ b/arch/mn10300/unit-asb2305/pci-asb2305.h
@@ -36,7 +36,6 @@ extern void pcibios_resource_survey(void);
 /* pci.c */
 
 extern int pcibios_last_bus;
-extern struct pci_bus *pci_root_bus;
 extern struct pci_ops *pci_root_ops;
 
 extern struct irq_routing_table *pcibios_get_irq_routing_table(void);
diff --git a/arch/mn10300/unit-asb2305/pci.c b/arch/mn10300/unit-asb2305/pci.c
index e2059486d3f8..426bf51605f3 100644
--- a/arch/mn10300/unit-asb2305/pci.c
+++ b/arch/mn10300/unit-asb2305/pci.c
@@ -24,7 +24,6 @@
 unsigned int pci_probe = 1;
 
 int pcibios_last_bus = -1;
-struct pci_bus *pci_root_bus;
 struct pci_ops *pci_root_ops;
 
 /*
@@ -377,8 +376,7 @@ static int __init pcibios_init(void)
 
 	pci_add_resource_offset(&resources, &pci_ioport_resource, io_offset);
 	pci_add_resource_offset(&resources, &pci_iomem_resource, mem_offset);
-	pci_root_bus = pci_scan_root_bus(NULL, 0, &pci_direct_ampci, NULL,
-					 &resources);
+	pci_scan_root_bus(NULL, 0, &pci_direct_ampci, NULL, &resources);
 
 	pcibios_irq_init();
 	pcibios_fixup_irqs();