[PATCH 028/182] gpio: kempld: use gpiochip data pointer

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

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: Brunner Michael <Michael.Brunner@xxxxxxxxxxx>
Cc: Guenter Roeck <linux@xxxxxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
 drivers/gpio/gpio-kempld.c | 17 ++++++-----------
 1 file changed, 6 insertions(+), 11 deletions(-)

diff --git a/drivers/gpio/gpio-kempld.c b/drivers/gpio/gpio-kempld.c
index 35dd1e0af364..90a3c4e3e4aa 100644
--- a/drivers/gpio/gpio-kempld.c
+++ b/drivers/gpio/gpio-kempld.c
@@ -65,8 +65,7 @@ static int kempld_gpio_get_bit(struct kempld_device_data *pld, u8 reg, u8 bit)
 
 static int kempld_gpio_get(struct gpio_chip *chip, unsigned offset)
 {
-	struct kempld_gpio_data *gpio
-		= container_of(chip, struct kempld_gpio_data, chip);
+	struct kempld_gpio_data *gpio = gpiochip_get_data(chip);
 	struct kempld_device_data *pld = gpio->pld;
 
 	return kempld_gpio_get_bit(pld, KEMPLD_GPIO_LVL_NUM(offset), offset);
@@ -74,8 +73,7 @@ static int kempld_gpio_get(struct gpio_chip *chip, unsigned offset)
 
 static void kempld_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
 {
-	struct kempld_gpio_data *gpio
-		= container_of(chip, struct kempld_gpio_data, chip);
+	struct kempld_gpio_data *gpio = gpiochip_get_data(chip);
 	struct kempld_device_data *pld = gpio->pld;
 
 	kempld_get_mutex(pld);
@@ -85,8 +83,7 @@ static void kempld_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
 
 static int kempld_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 {
-	struct kempld_gpio_data *gpio
-		= container_of(chip, struct kempld_gpio_data, chip);
+	struct kempld_gpio_data *gpio = gpiochip_get_data(chip);
 	struct kempld_device_data *pld = gpio->pld;
 
 	kempld_get_mutex(pld);
@@ -99,8 +96,7 @@ static int kempld_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 static int kempld_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
 					int value)
 {
-	struct kempld_gpio_data *gpio
-		= container_of(chip, struct kempld_gpio_data, chip);
+	struct kempld_gpio_data *gpio = gpiochip_get_data(chip);
 	struct kempld_device_data *pld = gpio->pld;
 
 	kempld_get_mutex(pld);
@@ -113,8 +109,7 @@ static int kempld_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
 
 static int kempld_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
 {
-	struct kempld_gpio_data *gpio
-		= container_of(chip, struct kempld_gpio_data, chip);
+	struct kempld_gpio_data *gpio = gpiochip_get_data(chip);
 	struct kempld_device_data *pld = gpio->pld;
 
 	return !kempld_gpio_get_bit(pld, KEMPLD_GPIO_DIR_NUM(offset), offset);
@@ -183,7 +178,7 @@ static int kempld_gpio_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	ret = gpiochip_add(chip);
+	ret = gpiochip_add_data(chip, gpio);
 	if (ret) {
 		dev_err(dev, "Could not register GPIO chip\n");
 		return ret;
-- 
2.4.3

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