[media] : cxd2830r: 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: Antti Palosaari <crope@iki.fi>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/dvb-frontends/cxd2820r_core.c b/drivers/media/dvb-frontends/cxd2820r_core.c
index 24a457d..ba4cb75 100644 (file)
--- a/drivers/media/dvb-frontends/cxd2820r_core.c
+++ b/drivers/media/dvb-frontends/cxd2820r_core.c
@@ -606,8 +606,7 @@ static int cxd2820r_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
 static int cxd2820r_gpio_direction_output(struct gpio_chip *chip, unsigned nr,
                int val)
 {
-       struct cxd2820r_priv *priv =
-                       container_of(chip, struct cxd2820r_priv, gpio_chip);
+       struct cxd2820r_priv *priv = gpiochip_get_data(chip);
        u8 gpio[GPIO_COUNT];
 
        dev_dbg(&priv->i2c->dev, "%s: nr=%d val=%d\n", __func__, nr, val);
@@ -620,8 +619,7 @@ static int cxd2820r_gpio_direction_output(struct gpio_chip *chip, unsigned nr,
 
 static void cxd2820r_gpio_set(struct gpio_chip *chip, unsigned nr, int val)
 {
-       struct cxd2820r_priv *priv =
-                       container_of(chip, struct cxd2820r_priv, gpio_chip);
+       struct cxd2820r_priv *priv = gpiochip_get_data(chip);
        u8 gpio[GPIO_COUNT];
 
        dev_dbg(&priv->i2c->dev, "%s: nr=%d val=%d\n", __func__, nr, val);
@@ -636,8 +634,7 @@ static void cxd2820r_gpio_set(struct gpio_chip *chip, unsigned nr, int val)
 
 static int cxd2820r_gpio_get(struct gpio_chip *chip, unsigned nr)
 {
-       struct cxd2820r_priv *priv =
-                       container_of(chip, struct cxd2820r_priv, gpio_chip);
+       struct cxd2820r_priv *priv = gpiochip_get_data(chip);
 
        dev_dbg(&priv->i2c->dev, "%s: nr=%d\n", __func__, nr);
 
@@ -731,7 +728,7 @@ struct dvb_frontend *cxd2820r_attach(const struct cxd2820r_config *cfg,
                priv->gpio_chip.base = -1; /* dynamic allocation */
                priv->gpio_chip.ngpio = GPIO_COUNT;
                priv->gpio_chip.can_sleep = 1;
-               ret = gpiochip_add(&priv->gpio_chip);
+               ret = gpiochip_add_data(&priv->gpio_chip, priv);
                if (ret)
                        goto error;