gpio: bt8xx: use gpiochip data pointer

This makes the driver use the data pointer added to the gpio_chip
to store a pointer to the state container instead of relying on
container_of().

Cc: Michael Buesch <m@bues.ch>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpio-bt8xx.c b/drivers/gpio/gpio-bt8xx.c
index 7e4c43c189600cc042248f21e8796c86acf79755..acefb25e8eca43b46bc9f4a97286b030d6b0959a 100644 (file)
--- a/drivers/gpio/gpio-bt8xx.c
+++ b/drivers/gpio/gpio-bt8xx.c
@@ -80,7 +80,7 @@ MODULE_PARM_DESC(gpiobase, "The GPIO number base. -1 means dynamic, which is the
 
 static int bt8xxgpio_gpio_direction_input(struct gpio_chip *gpio, unsigned nr)
 {
-       struct bt8xxgpio *bg = container_of(gpio, struct bt8xxgpio, gpio);
+       struct bt8xxgpio *bg = gpiochip_get_data(gpio);
        unsigned long flags;
        u32 outen, data;
 
@@ -101,7 +101,7 @@ static int bt8xxgpio_gpio_direction_input(struct gpio_chip *gpio, unsigned nr)
 
 static int bt8xxgpio_gpio_get(struct gpio_chip *gpio, unsigned nr)
 {
-       struct bt8xxgpio *bg = container_of(gpio, struct bt8xxgpio, gpio);
+       struct bt8xxgpio *bg = gpiochip_get_data(gpio);
        unsigned long flags;
        u32 val;
 
@@ -115,7 +115,7 @@ static int bt8xxgpio_gpio_get(struct gpio_chip *gpio, unsigned nr)
 static int bt8xxgpio_gpio_direction_output(struct gpio_chip *gpio,
                                        unsigned nr, int val)
 {
-       struct bt8xxgpio *bg = container_of(gpio, struct bt8xxgpio, gpio);
+       struct bt8xxgpio *bg = gpiochip_get_data(gpio);
        unsigned long flags;
        u32 outen, data;
 
@@ -140,7 +140,7 @@ static int bt8xxgpio_gpio_direction_output(struct gpio_chip *gpio,
 static void bt8xxgpio_gpio_set(struct gpio_chip *gpio,
                            unsigned nr, int val)
 {
-       struct bt8xxgpio *bg = container_of(gpio, struct bt8xxgpio, gpio);
+       struct bt8xxgpio *bg = gpiochip_get_data(gpio);
        unsigned long flags;
        u32 data;
 
@@ -217,7 +217,7 @@ static int bt8xxgpio_probe(struct pci_dev *dev,
        bgwrite(0, BT848_GPIO_OUT_EN);
 
        bt8xxgpio_gpio_setup(bg);
-       err = gpiochip_add(&bg->gpio);
+       err = gpiochip_add_data(&bg->gpio, bg);
        if (err) {
                printk(KERN_ERR "bt8xxgpio: Failed to register GPIOs\n");
                goto err_disable;