linux-kernel - Re: [PATCH] regulator: Add a pointer to aat2870_data in struct aat2870

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Date:	Fri, 2 Mar 2012 14:14:11 +0900
From:	Jin Park <jinyoungp@...dia.com>
To:	Axel Lin <axel.lin@...il.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Liam Girdwood <lrg@...com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: Re: [PATCH] regulator: Add a pointer to aat2870_data in struct aat2870_regulator

Acked-by: Jin Park <jinyoungp@...dia.com>

On 2012-03-02 오전 10:28, Axel Lin wrote:
> The reason we add *pdev in struct aat2870_regulator is to use it
> to get a pointer to struct aat2870_data.
> Save a pointer to struct aat2870_data instead of pdev in struct
> aat2870_regulator, this change makes the intention more clear.
>
> Signed-off-by: Axel Lin<axel.lin@...il.com>
> ---
>   drivers/regulator/aat2870-regulator.c |   14 +++++++-------
>   1 files changed, 7 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/regulator/aat2870-regulator.c b/drivers/regulator/aat2870-regulator.c
> index 685ad43..9ed5c5d 100644
> --- a/drivers/regulator/aat2870-regulator.c
> +++ b/drivers/regulator/aat2870-regulator.c
> @@ -31,7 +31,7 @@
>   #include<linux/mfd/aat2870.h>
>
>   struct aat2870_regulator {
> -	struct platform_device *pdev;
> +	struct aat2870_data *aat2870;
>   	struct regulator_desc desc;
>
>   	const int *voltages; /* uV */
> @@ -60,7 +60,7 @@ static int aat2870_ldo_set_voltage_sel(struct regulator_dev *rdev,
>   				       unsigned selector)
>   {
>   	struct aat2870_regulator *ri = rdev_get_drvdata(rdev);
> -	struct aat2870_data *aat2870 = dev_get_drvdata(ri->pdev->dev.parent);
> +	struct aat2870_data *aat2870 = ri->aat2870;
>
>   	return aat2870->update(aat2870, ri->voltage_addr, ri->voltage_mask,
>   			       selector<<  ri->voltage_shift);
> @@ -69,7 +69,7 @@ static int aat2870_ldo_set_voltage_sel(struct regulator_dev *rdev,
>   static int aat2870_ldo_get_voltage_sel(struct regulator_dev *rdev)
>   {
>   	struct aat2870_regulator *ri = rdev_get_drvdata(rdev);
> -	struct aat2870_data *aat2870 = dev_get_drvdata(ri->pdev->dev.parent);
> +	struct aat2870_data *aat2870 = ri->aat2870;
>   	u8 val;
>   	int ret;
>
> @@ -83,7 +83,7 @@ static int aat2870_ldo_get_voltage_sel(struct regulator_dev *rdev)
>   static int aat2870_ldo_enable(struct regulator_dev *rdev)
>   {
>   	struct aat2870_regulator *ri = rdev_get_drvdata(rdev);
> -	struct aat2870_data *aat2870 = dev_get_drvdata(ri->pdev->dev.parent);
> +	struct aat2870_data *aat2870 = ri->aat2870;
>
>   	return aat2870->update(aat2870, ri->enable_addr, ri->enable_mask,
>   			       ri->enable_mask);
> @@ -92,7 +92,7 @@ static int aat2870_ldo_enable(struct regulator_dev *rdev)
>   static int aat2870_ldo_disable(struct regulator_dev *rdev)
>   {
>   	struct aat2870_regulator *ri = rdev_get_drvdata(rdev);
> -	struct aat2870_data *aat2870 = dev_get_drvdata(ri->pdev->dev.parent);
> +	struct aat2870_data *aat2870 = ri->aat2870;
>
>   	return aat2870->update(aat2870, ri->enable_addr, ri->enable_mask, 0);
>   }
> @@ -100,7 +100,7 @@ static int aat2870_ldo_disable(struct regulator_dev *rdev)
>   static int aat2870_ldo_is_enabled(struct regulator_dev *rdev)
>   {
>   	struct aat2870_regulator *ri = rdev_get_drvdata(rdev);
> -	struct aat2870_data *aat2870 = dev_get_drvdata(ri->pdev->dev.parent);
> +	struct aat2870_data *aat2870 = ri->aat2870;
>   	u8 val;
>   	int ret;
>
> @@ -185,7 +185,7 @@ static int aat2870_regulator_probe(struct platform_device *pdev)
>   		dev_err(&pdev->dev, "Invalid device ID, %d\n", pdev->id);
>   		return -EINVAL;
>   	}
> -	ri->pdev = pdev;
> +	ri->aat2870 = dev_get_drvdata(pdev->dev.parent);
>
>   	rdev = regulator_register(&ri->desc,&pdev->dev,
>   				  pdev->dev.platform_data, ri, NULL);
--
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