linux-kernel - Re: [PATCH 5/9] mfd: sm501: Use gpiochip data pointer

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Date:	Mon, 11 Apr 2016 12:48:44 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Linus Walleij <linus.walleij@...aro.org>
Cc:	Samuel Ortiz <sameo@...ux.intel.com>, linux-kernel@...r.kernel.org,
	Ben Dooks <ben@...ff.org.uk>
Subject: Re: [PATCH 5/9] mfd: sm501: Use gpiochip data pointer

On Wed, 30 Mar 2016, Linus Walleij wrote:

> 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: Ben Dooks <ben@...ff.org.uk>
> Acked-by: Lee Jones <lee.jones@...aro.org>
> Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
> ---
>  drivers/mfd/sm501.c | 15 +++++----------
>  1 file changed, 5 insertions(+), 10 deletions(-)

Applied, thanks.

> diff --git a/drivers/mfd/sm501.c b/drivers/mfd/sm501.c
> index c646784c5a7d..65cd0d2a822a 100644
> --- a/drivers/mfd/sm501.c
> +++ b/drivers/mfd/sm501.c
> @@ -879,11 +879,6 @@ static int sm501_register_display(struct sm501_devdata *sm,
>  
>  #ifdef CONFIG_MFD_SM501_GPIO
>  
> -static inline struct sm501_gpio_chip *to_sm501_gpio(struct gpio_chip *gc)
> -{
> -	return container_of(gc, struct sm501_gpio_chip, gpio);
> -}
> -
>  static inline struct sm501_devdata *sm501_gpio_to_dev(struct sm501_gpio *gpio)
>  {
>  	return container_of(gpio, struct sm501_devdata, gpio);
> @@ -892,7 +887,7 @@ static inline struct sm501_devdata *sm501_gpio_to_dev(struct sm501_gpio *gpio)
>  static int sm501_gpio_get(struct gpio_chip *chip, unsigned offset)
>  
>  {
> -	struct sm501_gpio_chip *smgpio = to_sm501_gpio(chip);
> +	struct sm501_gpio_chip *smgpio = gpiochip_get_data(chip);
>  	unsigned long result;
>  
>  	result = smc501_readl(smgpio->regbase + SM501_GPIO_DATA_LOW);
> @@ -923,7 +918,7 @@ static void sm501_gpio_ensure_gpio(struct sm501_gpio_chip *smchip,
>  static void sm501_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
>  
>  {
> -	struct sm501_gpio_chip *smchip = to_sm501_gpio(chip);
> +	struct sm501_gpio_chip *smchip = gpiochip_get_data(chip);
>  	struct sm501_gpio *smgpio = smchip->ourgpio;
>  	unsigned long bit = 1 << offset;
>  	void __iomem *regs = smchip->regbase;
> @@ -948,7 +943,7 @@ static void sm501_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
>  
>  static int sm501_gpio_input(struct gpio_chip *chip, unsigned offset)
>  {
> -	struct sm501_gpio_chip *smchip = to_sm501_gpio(chip);
> +	struct sm501_gpio_chip *smchip = gpiochip_get_data(chip);
>  	struct sm501_gpio *smgpio = smchip->ourgpio;
>  	void __iomem *regs = smchip->regbase;
>  	unsigned long bit = 1 << offset;
> @@ -974,7 +969,7 @@ static int sm501_gpio_input(struct gpio_chip *chip, unsigned offset)
>  static int sm501_gpio_output(struct gpio_chip *chip,
>  			     unsigned offset, int value)
>  {
> -	struct sm501_gpio_chip *smchip = to_sm501_gpio(chip);
> +	struct sm501_gpio_chip *smchip = gpiochip_get_data(chip);
>  	struct sm501_gpio *smgpio = smchip->ourgpio;
>  	unsigned long bit = 1 << offset;
>  	void __iomem *regs = smchip->regbase;
> @@ -1039,7 +1034,7 @@ static int sm501_gpio_register_chip(struct sm501_devdata *sm,
>  	gchip->base   = base;
>  	chip->ourgpio = gpio;
>  
> -	return gpiochip_add(gchip);
> +	return gpiochip_add_data(gchip, chip);
>  }
>  
>  static int sm501_register_gpio(struct sm501_devdata *sm)

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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