gpio: mc33880: 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().

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpio-mc33880.c b/drivers/gpio/gpio-mc33880.c
index b46b9e522e8cb3910b39b5e6bb5ad437717e342b..0f0df795626404a340d4191b03d01ba0ecbe43d6 100644 (file)
--- a/drivers/gpio/gpio-mc33880.c
+++ b/drivers/gpio/gpio-mc33880.c
@@ -71,7 +71,7 @@ static int __mc33880_set(struct mc33880 *mc, unsigned offset, int value)
 
 static void mc33880_set(struct gpio_chip *chip, unsigned offset, int value)
 {
-       struct mc33880 *mc = container_of(chip, struct mc33880, chip);
+       struct mc33880 *mc = gpiochip_get_data(chip);
 
        mutex_lock(&mc->lock);
 
@@ -135,7 +135,7 @@ static int mc33880_probe(struct spi_device *spi)
                goto exit_destroy;
        }
 
-       ret = gpiochip_add(&mc->chip);
+       ret = gpiochip_add_data(&mc->chip, mc);
        if (ret)
                goto exit_destroy;