linux-kernel - Re: [PATCH v6 2/9] mfd: axp20x: Remove second struct device * parameter for axp20x_match

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Date:	Mon, 11 Jan 2016 09:25:13 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	Chen-Yu Tsai <wens@...e.org>
Cc:	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Chen-Yu Tsai <wens@...s.tw>, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-sunxi@...glegroups.com, Hans de Goede <hdegoede@...hat.com>,
	Mark Brown <broonie@...nel.org>,
	Andy Shevchenko <andy.shevchenko@...il.com>,
	Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCH v6 2/9] mfd: axp20x: Remove second struct device *
 parameter for axp20x_match_device()

On Thu, 17 Dec 2015, Chen-Yu Tsai wrote:

> The first argument passed to axp20x_match_device(), struct axp20x_dev *,
> already contains a pointer to the device. By rearranging some code,
> moving the assignment of the pointer before axp20x_match_device() is
> called, we can eliminate the second parameter.
> 
> Suggested-by: Andy Shevchenko <andy.shevchenko@...il.com>
> Signed-off-by: Chen-Yu Tsai <wens@...e.org>
> ---
>  drivers/mfd/axp20x.c | 11 ++++++-----
>  1 file changed, 6 insertions(+), 5 deletions(-)

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

> diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
> index 9842199e2e6c..685a78614f83 100644
> --- a/drivers/mfd/axp20x.c
> +++ b/drivers/mfd/axp20x.c
> @@ -606,8 +606,9 @@ static void axp20x_power_off(void)
>  		     AXP20X_OFF);
>  }
>  
> -static int axp20x_match_device(struct axp20x_dev *axp20x, struct device *dev)
> +static int axp20x_match_device(struct axp20x_dev *axp20x)
>  {
> +	struct device *dev = axp20x->dev;
>  	const struct acpi_device_id *acpi_id;
>  	const struct of_device_id *of_id;
>  
> @@ -673,14 +674,14 @@ static int axp20x_i2c_probe(struct i2c_client *i2c,
>  	if (!axp20x)
>  		return -ENOMEM;
>  
> -	ret = axp20x_match_device(axp20x, &i2c->dev);
> -	if (ret)
> -		return ret;
> -
>  	axp20x->i2c_client = i2c;
>  	axp20x->dev = &i2c->dev;
>  	dev_set_drvdata(axp20x->dev, axp20x);
>  
> +	ret = axp20x_match_device(axp20x);
> +	if (ret)
> +		return ret;
> +
>  	axp20x->regmap = devm_regmap_init_i2c(i2c, axp20x->regmap_cfg);
>  	if (IS_ERR(axp20x->regmap)) {
>  		ret = PTR_ERR(axp20x->regmap);

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