gpio: mcp: 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: Sonic Zhang <sonic.zhang@analog.com>
Acked-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpio-mcp23s08.c b/drivers/gpio/gpio-mcp23s08.c
index 13cace0..c767879 100644
--- a/drivers/gpio/gpio-mcp23s08.c
+++ b/drivers/gpio/gpio-mcp23s08.c
@@ -269,7 +269,7 @@
static int mcp23s08_direction_input(struct gpio_chip *chip, unsigned offset)
{
- struct mcp23s08 *mcp = container_of(chip, struct mcp23s08, chip);
+ struct mcp23s08 *mcp = gpiochip_get_data(chip);
int status;
mutex_lock(&mcp->lock);
@@ -281,7 +281,7 @@
static int mcp23s08_get(struct gpio_chip *chip, unsigned offset)
{
- struct mcp23s08 *mcp = container_of(chip, struct mcp23s08, chip);
+ struct mcp23s08 *mcp = gpiochip_get_data(chip);
int status;
mutex_lock(&mcp->lock);
@@ -312,7 +312,7 @@
static void mcp23s08_set(struct gpio_chip *chip, unsigned offset, int value)
{
- struct mcp23s08 *mcp = container_of(chip, struct mcp23s08, chip);
+ struct mcp23s08 *mcp = gpiochip_get_data(chip);
unsigned mask = 1 << offset;
mutex_lock(&mcp->lock);
@@ -323,7 +323,7 @@
static int
mcp23s08_direction_output(struct gpio_chip *chip, unsigned offset, int value)
{
- struct mcp23s08 *mcp = container_of(chip, struct mcp23s08, chip);
+ struct mcp23s08 *mcp = gpiochip_get_data(chip);
unsigned mask = 1 << offset;
int status;
@@ -377,7 +377,7 @@
static int mcp23s08_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
{
- struct mcp23s08 *mcp = container_of(chip, struct mcp23s08, chip);
+ struct mcp23s08 *mcp = gpiochip_get_data(chip);
return irq_find_mapping(mcp->irq_domain, offset);
}
@@ -544,7 +544,7 @@
int t;
unsigned mask;
- mcp = container_of(chip, struct mcp23s08, chip);
+ mcp = gpiochip_get_data(chip);
/* NOTE: we only handle one bank for now ... */
bank = '0' + ((mcp->addr >> 1) & 0x7);
@@ -704,7 +704,7 @@
goto fail;
}
- status = gpiochip_add(&mcp->chip);
+ status = gpiochip_add_data(&mcp->chip, mcp);
if (status < 0)
goto fail;