gpio: xgene: 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: Feng Kan <fkan@apm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpio-xgene.c b/drivers/gpio/gpio-xgene.c
index b8ceb71..592e9cd 100644 (file)
--- a/drivers/gpio/gpio-xgene.c
+++ b/drivers/gpio/gpio-xgene.c
@@ -47,14 +47,9 @@ struct xgene_gpio {
 #endif
 };
 
-static inline struct xgene_gpio *to_xgene_gpio(struct gpio_chip *chip)
-{
-       return container_of(chip, struct xgene_gpio, chip);
-}
-
 static int xgene_gpio_get(struct gpio_chip *gc, unsigned int offset)
 {
-       struct xgene_gpio *chip = to_xgene_gpio(gc);
+       struct xgene_gpio *chip = gpiochip_get_data(gc);
        unsigned long bank_offset;
        u32 bit_offset;
 
@@ -65,7 +60,7 @@ static int xgene_gpio_get(struct gpio_chip *gc, unsigned int offset)
 
 static void __xgene_gpio_set(struct gpio_chip *gc, unsigned int offset, int val)
 {
-       struct xgene_gpio *chip = to_xgene_gpio(gc);
+       struct xgene_gpio *chip = gpiochip_get_data(gc);
        unsigned long bank_offset;
        u32 setval, bit_offset;
 
@@ -82,7 +77,7 @@ static void __xgene_gpio_set(struct gpio_chip *gc, unsigned int offset, int val)
 
 static void xgene_gpio_set(struct gpio_chip *gc, unsigned int offset, int val)
 {
-       struct xgene_gpio *chip = to_xgene_gpio(gc);
+       struct xgene_gpio *chip = gpiochip_get_data(gc);
        unsigned long flags;
 
        spin_lock_irqsave(&chip->lock, flags);
@@ -92,7 +87,7 @@ static void xgene_gpio_set(struct gpio_chip *gc, unsigned int offset, int val)
 
 static int xgene_gpio_dir_in(struct gpio_chip *gc, unsigned int offset)
 {
-       struct xgene_gpio *chip = to_xgene_gpio(gc);
+       struct xgene_gpio *chip = gpiochip_get_data(gc);
        unsigned long flags, bank_offset;
        u32 dirval, bit_offset;
 
@@ -113,7 +108,7 @@ static int xgene_gpio_dir_in(struct gpio_chip *gc, unsigned int offset)
 static int xgene_gpio_dir_out(struct gpio_chip *gc,
                                        unsigned int offset, int val)
 {
-       struct xgene_gpio *chip = to_xgene_gpio(gc);
+       struct xgene_gpio *chip = gpiochip_get_data(gc);
        unsigned long flags, bank_offset;
        u32 dirval, bit_offset;
 
@@ -198,7 +193,7 @@ static int xgene_gpio_probe(struct platform_device *pdev)
 
        platform_set_drvdata(pdev, gpio);
 
-       err = gpiochip_add(&gpio->chip);
+       err = gpiochip_add_data(&gpio->chip, gpio);
        if (err) {
                dev_err(&pdev->dev,
                        "failed to register gpiochip.\n");