diff --git a/arch/mips/pci/pci-ip27.c b/arch/mips/pci/pci-ip27.c
index 6eb65e44d9e4..7b2ac81e1f59 100644
--- a/arch/mips/pci/pci-ip27.c
+++ b/arch/mips/pci/pci-ip27.c
@@ -217,6 +217,7 @@ static void pci_fixup_ioc3(struct pci_dev *d)
 	pci_disable_swapping(d);
 }
 
+#ifdef CONFIG_NUMA
 int pcibus_to_node(struct pci_bus *bus)
 {
 	struct bridge_controller *bc = BRIDGE_CONTROLLER(bus);
@@ -224,6 +225,7 @@ int pcibus_to_node(struct pci_bus *bus)
 	return bc->nasid;
 }
 EXPORT_SYMBOL(pcibus_to_node);
+#endif /* CONFIG_NUMA */
 
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SGI, PCI_DEVICE_ID_SGI_IOC3,
 	pci_fixup_ioc3);