gpio: 74x164: 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: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpio-74x164.c b/drivers/gpio/gpio-74x164.c
index 54a4147..c81224f 100644
--- a/drivers/gpio/gpio-74x164.c
+++ b/drivers/gpio/gpio-74x164.c
@@ -33,11 +33,6 @@
u8 buffer[0];
};
-static struct gen_74x164_chip *gpio_to_74x164_chip(struct gpio_chip *gc)
-{
- return container_of(gc, struct gen_74x164_chip, gpio_chip);
-}
-
static int __gen_74x164_write_config(struct gen_74x164_chip *chip)
{
struct spi_transfer xfer = {
@@ -51,7 +46,7 @@
static int gen_74x164_get_value(struct gpio_chip *gc, unsigned offset)
{
- struct gen_74x164_chip *chip = gpio_to_74x164_chip(gc);
+ struct gen_74x164_chip *chip = gpiochip_get_data(gc);
u8 bank = chip->registers - 1 - offset / 8;
u8 pin = offset % 8;
int ret;
@@ -66,7 +61,7 @@
static void gen_74x164_set_value(struct gpio_chip *gc,
unsigned offset, int val)
{
- struct gen_74x164_chip *chip = gpio_to_74x164_chip(gc);
+ struct gen_74x164_chip *chip = gpiochip_get_data(gc);
u8 bank = chip->registers - 1 - offset / 8;
u8 pin = offset % 8;
@@ -136,7 +131,7 @@
goto exit_destroy;
}
- ret = gpiochip_add(&chip->gpio_chip);
+ ret = gpiochip_add_data(&chip->gpio_chip, chip);
if (!ret)
return 0;