gpio: cdev: open-code to_gpio_chardev_data()

This function is a wrapper around container_of(). It's used only once and
we will have a second notifier soon, so instead of having two flavors of
this helper, let's just open-code where needed.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Kent Gibson <warthog618@gmail.com>

diff --git a/drivers/gpio/gpiolib-cdev.c b/drivers/gpio/gpiolib-cdev.c
index 9ee8604..91bdd3b 100644 (file)
--- a/drivers/gpio/gpiolib-cdev.c
+++ b/drivers/gpio/gpiolib-cdev.c
@@ -2491,16 +2491,11 @@ static long gpio_ioctl_compat(struct file *file, unsigned int cmd,
 }
 #endif
 
-static struct gpio_chardev_data *
-to_gpio_chardev_data(struct notifier_block *nb)
-{
-       return container_of(nb, struct gpio_chardev_data, lineinfo_changed_nb);
-}
-
 static int lineinfo_changed_notify(struct notifier_block *nb,
                                   unsigned long action, void *data)
 {
-       struct gpio_chardev_data *cdev = to_gpio_chardev_data(nb);
+       struct gpio_chardev_data *cdev =
+               container_of(nb, struct gpio_chardev_data, lineinfo_changed_nb);
        struct gpio_v2_line_info_changed chg;
        struct gpio_desc *desc = data;
        int ret;