diff --git a/include/linux/of_gpio.h b/include/linux/of_gpio.h
index 69dbe31..f319182 100644
--- a/include/linux/of_gpio.h
+++ b/include/linux/of_gpio.h
@@ -54,7 +54,7 @@
 			      struct of_mm_gpio_chip *mm_gc);
 extern void of_mm_gpiochip_remove(struct of_mm_gpio_chip *mm_gc);
 
-extern void of_gpiochip_add(struct gpio_chip *gc);
+extern int of_gpiochip_add(struct gpio_chip *gc);
 extern void of_gpiochip_remove(struct gpio_chip *gc);
 extern int of_gpio_simple_xlate(struct gpio_chip *gc,
 				const struct of_phandle_args *gpiospec,
@@ -76,7 +76,7 @@
 	return -ENOSYS;
 }
 
-static inline void of_gpiochip_add(struct gpio_chip *gc) { }
+static inline int of_gpiochip_add(struct gpio_chip *gc) { return 0; }
 static inline void of_gpiochip_remove(struct gpio_chip *gc) { }
 
 #endif /* CONFIG_OF_GPIO */