diff --git a/include/linux/pci.h b/include/linux/pci.h
index c20211e59a57..29da7598f8d0 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1772,6 +1772,10 @@ static inline int pci_request_regions(struct pci_dev *dev, const char *res_name)
 { return -EIO; }
 static inline void pci_release_regions(struct pci_dev *dev) { }
 
+static inline int pci_register_io_range(struct fwnode_handle *fwnode,
+					phys_addr_t addr, resource_size_t size)
+{ return -EINVAL; }
+
 static inline unsigned long pci_address_to_pio(phys_addr_t addr) { return -1; }
 
 static inline struct pci_bus *pci_find_next_bus(const struct pci_bus *from)