Re: [PATCH 163/182] mfd: htc-egpio: use gpiochip data pointer

[Lee Jones <lee.jones@xxxxxxxxxx>]

On Wed, 09 Dec 2015, 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: Lee Jones <lee.jones@xxxxxxxxxx>
> Cc: Philipp Zabel <philipp.zabel@xxxxxxxxx>
> Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
> ---
> Lee please ACK this so I can take it through the GPIO tree.
> Philipp: should this driver move to drivers/gpio? Looks like
> so to me.
> ---
>  drivers/mfd/htc-egpio.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)

Acked-by: Lee Jones <lee.jones@xxxxxxxxxx>

> diff --git a/drivers/mfd/htc-egpio.c b/drivers/mfd/htc-egpio.c
> index d334e7d8a77d..2e066fe66ca7 100644
> --- a/drivers/mfd/htc-egpio.c
> +++ b/drivers/mfd/htc-egpio.c
> @@ -155,7 +155,7 @@ static int egpio_get(struct gpio_chip *chip, unsigned offset)
>  
>  	pr_debug("egpio_get_value(%d)\n", chip->base + offset);
>  
> -	egpio = container_of(chip, struct egpio_chip, chip);
> +	egpio = gpiochip_get_data(chip);
>  	ei    = dev_get_drvdata(egpio->dev);
>  	bit   = egpio_bit(ei, offset);
>  	reg   = egpio->reg_start + egpio_pos(ei, offset);
> @@ -170,7 +170,7 @@ static int egpio_direction_input(struct gpio_chip *chip, unsigned offset)
>  {
>  	struct egpio_chip *egpio;
>  
> -	egpio = container_of(chip, struct egpio_chip, chip);
> +	egpio = gpiochip_get_data(chip);
>  	return test_bit(offset, &egpio->is_out) ? -EINVAL : 0;
>  }
>  
> @@ -192,7 +192,7 @@ static void egpio_set(struct gpio_chip *chip, unsigned offset, int value)
>  	pr_debug("egpio_set(%s, %d(%d), %d)\n",
>  			chip->label, offset, offset+chip->base, value);
>  
> -	egpio = container_of(chip, struct egpio_chip, chip);
> +	egpio = gpiochip_get_data(chip);
>  	ei    = dev_get_drvdata(egpio->dev);
>  	bit   = egpio_bit(ei, offset);
>  	pos   = egpio_pos(ei, offset);
> @@ -216,7 +216,7 @@ static int egpio_direction_output(struct gpio_chip *chip,
>  {
>  	struct egpio_chip *egpio;
>  
> -	egpio = container_of(chip, struct egpio_chip, chip);
> +	egpio = gpiochip_get_data(chip);
>  	if (test_bit(offset, &egpio->is_out)) {
>  		egpio_set(chip, offset, value);
>  		return 0;
> @@ -330,7 +330,7 @@ static int __init egpio_probe(struct platform_device *pdev)
>  		chip->base            = pdata->chip[i].gpio_base;
>  		chip->ngpio           = pdata->chip[i].num_gpios;
>  
> -		gpiochip_add(chip);
> +		gpiochip_add_data(chip, &ei->chip[i]);
>  	}
>  
>  	/* Set initial pin values */

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