diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c
index 5a1817e..9ae29cc 100644
--- a/drivers/gpio/gpio-mpc8xxx.c
+++ b/drivers/gpio/gpio-mpc8xxx.c
@@ -38,7 +38,7 @@ struct mpc8xxx_gpio_chip {
 	 */
 	u32 data;
 	struct irq_domain *irq;
-	void *of_dev_id_data;
+	const void *of_dev_id_data;
 };
 
 static inline u32 mpc8xxx_gpio2mask(unsigned int gpio)