diff --git a/arch/powerpc/platforms/85xx/mpc85xx_ads.c b/arch/powerpc/platforms/85xx/mpc85xx_ads.c
index 4e03050961148304d9f357409bdbceeb43665cd7..3582c841844b377c76a1e55d53a4a10df6920080 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_ads.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_ads.c
@@ -165,7 +165,7 @@ static void __init init_ioports(void)
 	int i;
 
 	for (i = 0; i < ARRAY_SIZE(mpc8560_ads_pins); i++) {
-		struct cpm_pin *pin = &mpc8560_ads_pins[i];
+		const struct cpm_pin *pin = &mpc8560_ads_pins[i];
 		cpm2_set_pin(pin->port, pin->pin, pin->flags);
 	}