gpio: add static to get_function()

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c
index f611996..9faf335 100644 (file)
--- a/drivers/gpio/gpio-uclass.c
+++ b/drivers/gpio/gpio-uclass.c
@@ -494,8 +494,8 @@ static const char * const gpio_function[GPIOF_COUNT] = {
        "func",
 };
 
-int get_function(struct udevice *dev, int offset, bool skip_unused,
-                const char **namep)
+static int get_function(struct udevice *dev, int offset, bool skip_unused,
+                       const char **namep)
 {
        struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
        struct dm_gpio_ops *ops = gpio_get_ops(dev);