diff --git a/include/linux/of_net.h b/include/linux/of_net.h
index f47464188710..61bf53b02779 100644
--- a/include/linux/of_net.h
+++ b/include/linux/of_net.h
@@ -11,6 +11,16 @@
 #include <linux/of.h>
 extern const int of_get_phy_mode(struct device_node *np);
 extern const void *of_get_mac_address(struct device_node *np);
+#else
+static inline const int of_get_phy_mode(struct device_node *np)
+{
+	return -ENODEV;
+}
+
+static inline const void *of_get_mac_address(struct device_node *np)
+{
+	return NULL;
+}
 #endif
 
 #endif /* __LINUX_OF_NET_H */