diff --git a/drivers/gpio/gpio-altera.c b/drivers/gpio/gpio-altera.c
index 4d41196b3f1376fee32c3a69675717a5202cf45c..449fb46cb8a0c7205401d2b9f57d14e040cc1122 100644
--- a/drivers/gpio/gpio-altera.c
+++ b/drivers/gpio/gpio-altera.c
@@ -256,7 +256,7 @@ static void altera_gpio_irq_leveL_high_handler(unsigned int irq,
 	chained_irq_exit(chip, desc);
 }
 
-int altera_gpio_probe(struct platform_device *pdev)
+static int altera_gpio_probe(struct platform_device *pdev)
 {
 	struct device_node *node = pdev->dev.of_node;
 	int reg, ret;