diff --git a/drivers/gpio/gpio-ath79.c b/drivers/gpio/gpio-ath79.c
index 684e9d6d6623..0a553d676042 100644
--- a/drivers/gpio/gpio-ath79.c
+++ b/drivers/gpio/gpio-ath79.c
@@ -51,7 +51,7 @@ static u32 ath79_gpio_read(struct ath79_gpio_ctrl *ctrl, unsigned reg)
 static void ath79_gpio_write(struct ath79_gpio_ctrl *ctrl,
 			unsigned reg, u32 val)
 {
-	return writel(val, ctrl->base + reg);
+	writel(val, ctrl->base + reg);
 }
 
 static bool ath79_gpio_update_bits(