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gpio: use container_of to resolve cs5535_gpio_chip from gpio_chip

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Use container_of instead of casting first structure member.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Fabian Frederick 2014-09-14 15:56:55 +02:00 committed by Linus Walleij
parent 1e960dbb7b
commit 56b427678c
1 changed files with 6 additions and 3 deletions
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9
drivers/gpio/gpio-cs5535.c
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@ -201,7 +201,8 @@ EXPORT_SYMBOL_GPL(cs5535_gpio_setup_event);
static int chip_gpio_request(struct gpio_chip *c, unsigned offset) static int chip_gpio_request(struct gpio_chip *c, unsigned offset)
{ {
struct cs5535_gpio_chip *chip = (struct cs5535_gpio_chip *) c; struct cs5535_gpio_chip *chip =
container_of(c, struct cs5535_gpio_chip, chip);
unsigned long flags; unsigned long flags;
spin_lock_irqsave(&chip->lock, flags); spin_lock_irqsave(&chip->lock, flags);
@ -241,7 +242,8 @@ static void chip_gpio_set(struct gpio_chip *chip, unsigned offset, int val)
static int chip_direction_input(struct gpio_chip *c, unsigned offset) static int chip_direction_input(struct gpio_chip *c, unsigned offset)
{ {
struct cs5535_gpio_chip *chip = (struct cs5535_gpio_chip *) c; struct cs5535_gpio_chip *chip =
container_of(c, struct cs5535_gpio_chip, chip);
unsigned long flags; unsigned long flags;
spin_lock_irqsave(&chip->lock, flags); spin_lock_irqsave(&chip->lock, flags);
@ -254,7 +256,8 @@ static int chip_direction_input(struct gpio_chip *c, unsigned offset)
static int chip_direction_output(struct gpio_chip *c, unsigned offset, int val) static int chip_direction_output(struct gpio_chip *c, unsigned offset, int val)
{ {
struct cs5535_gpio_chip *chip = (struct cs5535_gpio_chip *) c; struct cs5535_gpio_chip *chip =
container_of(c, struct cs5535_gpio_chip, chip);
unsigned long flags; unsigned long flags;
spin_lock_irqsave(&chip->lock, flags); spin_lock_irqsave(&chip->lock, flags);