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gpio: pcf857x: 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: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: George Cherian <george.cherian@ti.com>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
hifive-unleashed-5.1
Linus Walleij 2015-12-07 11:24:05 +01:00
parent 468e67f6eb
commit 597358e410
1 changed files with 4 additions and 4 deletions
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8
drivers/gpio/gpio-pcf857x.c
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@ -137,7 +137,7 @@ static int i2c_read_le16(struct i2c_client *client)
static int pcf857x_input(struct gpio_chip *chip, unsigned offset)
{
struct pcf857x *gpio = container_of(chip, struct pcf857x, chip);
struct pcf857x *gpio = gpiochip_get_data(chip);
int status;
mutex_lock(&gpio->lock);
@ -150,7 +150,7 @@ static int pcf857x_input(struct gpio_chip *chip, unsigned offset)
static int pcf857x_get(struct gpio_chip *chip, unsigned offset)
{
struct pcf857x *gpio = container_of(chip, struct pcf857x, chip);
struct pcf857x *gpio = gpiochip_get_data(chip);
int value;
value = gpio->read(gpio->client);
@ -159,7 +159,7 @@ static int pcf857x_get(struct gpio_chip *chip, unsigned offset)
static int pcf857x_output(struct gpio_chip *chip, unsigned offset, int value)
{
struct pcf857x *gpio = container_of(chip, struct pcf857x, chip);
struct pcf857x *gpio = gpiochip_get_data(chip);
unsigned bit = 1 << offset;
int status;
@ -372,7 +372,7 @@ static int pcf857x_probe(struct i2c_client *client,
gpio->out = ~n_latch;
gpio->status = gpio->out;
status = gpiochip_add(&gpio->chip);
status = gpiochip_add_data(&gpio->chip, gpio);
if (status < 0)
goto fail;