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serial: sc16is7xx: use gpiochip data pointer

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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: Jiri Slaby <jslaby@suse.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2015-12-08 23:15:53 +01:00
parent a00d60a0a2
commit dee07cea54
1 changed files with 6 additions and 10 deletions
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16
drivers/tty/serial/sc16is7xx.c
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@ -17,7 +17,7 @@
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/gpio.h>
#include <linux/gpio/driver.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/of.h>
@ -1104,8 +1104,7 @@ static const struct uart_ops sc16is7xx_ops = {
static int sc16is7xx_gpio_get(struct gpio_chip *chip, unsigned offset)
{
unsigned int val;
struct sc16is7xx_port *s = container_of(chip, struct sc16is7xx_port,
gpio);
struct sc16is7xx_port *s = gpiochip_get_data(chip);
struct uart_port *port = &s->p[0].port;
val = sc16is7xx_port_read(port, SC16IS7XX_IOSTATE_REG);
@ -1115,8 +1114,7 @@ static int sc16is7xx_gpio_get(struct gpio_chip *chip, unsigned offset)
static void sc16is7xx_gpio_set(struct gpio_chip *chip, unsigned offset, int val)
{
struct sc16is7xx_port *s = container_of(chip, struct sc16is7xx_port,
gpio);
struct sc16is7xx_port *s = gpiochip_get_data(chip);
struct uart_port *port = &s->p[0].port;
sc16is7xx_port_update(port, SC16IS7XX_IOSTATE_REG, BIT(offset),
@ -1126,8 +1124,7 @@ static void sc16is7xx_gpio_set(struct gpio_chip *chip, unsigned offset, int val)
static int sc16is7xx_gpio_direction_input(struct gpio_chip *chip,
unsigned offset)
{
struct sc16is7xx_port *s = container_of(chip, struct sc16is7xx_port,
gpio);
struct sc16is7xx_port *s = gpiochip_get_data(chip);
struct uart_port *port = &s->p[0].port;
sc16is7xx_port_update(port, SC16IS7XX_IODIR_REG, BIT(offset), 0);
@ -1138,8 +1135,7 @@ static int sc16is7xx_gpio_direction_input(struct gpio_chip *chip,
static int sc16is7xx_gpio_direction_output(struct gpio_chip *chip,
unsigned offset, int val)
{
struct sc16is7xx_port *s = container_of(chip, struct sc16is7xx_port,
gpio);
struct sc16is7xx_port *s = gpiochip_get_data(chip);
struct uart_port *port = &s->p[0].port;
sc16is7xx_port_update(port, SC16IS7XX_IOSTATE_REG, BIT(offset),
@ -1210,7 +1206,7 @@ static int sc16is7xx_probe(struct device *dev,
s->gpio.base = -1;
s->gpio.ngpio = devtype->nr_gpio;
s->gpio.can_sleep = 1;
ret = gpiochip_add(&s->gpio);
ret = gpiochip_add_data(&s->gpio, s);
if (ret)
goto out_thread;
}