diff --git a/arch/mips/include/asm/pci.h b/arch/mips/include/asm/pci.h
index 0564692c7d3b..acc651ec5014 100644
--- a/arch/mips/include/asm/pci.h
+++ b/arch/mips/include/asm/pci.h
@@ -66,8 +66,10 @@ extern int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin);
 /* Can be used to override the logic in pci_scan_bus for skipping
    already-configured bus numbers - to be used for buggy BIOSes
    or architectures with incomplete PCI setup by the loader */
-
-extern unsigned int pcibios_assign_all_busses(void);
+static inline unsigned int pcibios_assign_all_busses(void)
+{
+	return 1;
+}
 
 extern unsigned long PCIBIOS_MIN_IO;
 extern unsigned long PCIBIOS_MIN_MEM;
diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c
index 30320a4c8909..8cc6ea4e9481 100644
--- a/arch/mips/pci/pci.c
+++ b/arch/mips/pci/pci.c
@@ -297,11 +297,6 @@ static int pcibios_enable_resources(struct pci_dev *dev, int mask)
 	return 0;
 }
 
-unsigned int pcibios_assign_all_busses(void)
-{
-	return 1;
-}
-
 int pcibios_enable_device(struct pci_dev *dev, int mask)
 {
 	int err;