--- zzzz-none-000/linux-4.4.60/include/linux/of_pci.h	2017-04-08 07:53:53.000000000 +0000
+++ scorpion-1750e-727/linux-4.4.60/include/linux/of_pci.h	2021-02-04 17:41:59.000000000 +0000
@@ -72,4 +72,11 @@
 of_pci_find_msi_chip_by_node(struct device_node *of_node) { return NULL; }
 #endif
 
+static inline int of_pci_map_rid(struct device_node *np, u32 rid,
+			const char *map_name, const char *map_mask_name,
+			struct device_node **target, u32 *id_out)
+{
+	return -EINVAL;
+}
+
 #endif