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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>
This commit is contained in:
Linus Walleij 2015-12-07 10:09:36 +01:00
parent cf90c9e35b
commit 9e03cf0b12
1 changed files with 7 additions and 7 deletions
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14
drivers/gpio/gpio-mcp23s08.c
View File

@ -269,7 +269,7 @@ static const struct mcp23s08_ops mcp23s17_ops = {
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_direction_input(struct gpio_chip *chip, unsigned offset)
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 int __mcp23s08_set(struct mcp23s08 *mcp, unsigned mask, int value)
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 void mcp23s08_set(struct gpio_chip *chip, unsigned offset, int value)
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 irqreturn_t mcp23s08_irq(int irq, void *data)
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 @@ static void mcp23s08_dbg_show(struct seq_file *s, struct gpio_chip *chip)
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 @@ static int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev,
goto fail;
}
status = gpiochip_add(&mcp->chip);
status = gpiochip_add_data(&mcp->chip, mcp);
if (status < 0)
goto fail;