linux-kernel - Re: [PATCH 1/1] hid: hid-sensor-custom: simplify getting .driver

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Date:   Wed, 27 Mar 2019 13:12:22 +0100
From:   Simon Horman <horms@...ge.net.au>
To:     Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc:     linux-kernel@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        Jiri Kosina <jikos@...nel.org>,
        Jonathan Cameron <jic23@...nel.org>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        linux-input@...r.kernel.org, linux-iio@...r.kernel.org
Subject: Re: [PATCH 1/1] hid: hid-sensor-custom: simplify getting .driver_data

On Tue, Mar 19, 2019 at 05:36:38PM +0100, Wolfram Sang wrote:
> We should get 'driver_data' from 'struct device' directly. Going via
> platform_device is an unneeded step back and forth.
> 
> Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>

Reviewed-by: Simon Horman <horms+renesas@...ge.net.au>

> ---
> 
> Build tested only. buildbot is happy.
> 
>  drivers/hid/hid-sensor-custom.c | 12 ++++--------
>  1 file changed, 4 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/hid/hid-sensor-custom.c b/drivers/hid/hid-sensor-custom.c
> index bb012bc032e0..462e653a7bbb 100644
> --- a/drivers/hid/hid-sensor-custom.c
> +++ b/drivers/hid/hid-sensor-custom.c
> @@ -157,8 +157,7 @@ static int usage_id_cmp(const void *p1, const void *p2)
>  static ssize_t enable_sensor_show(struct device *dev,
>  				  struct device_attribute *attr, char *buf)
>  {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct hid_sensor_custom *sensor_inst = platform_get_drvdata(pdev);
> +	struct hid_sensor_custom *sensor_inst = dev_get_drvdata(dev);
>  
>  	return sprintf(buf, "%d\n", sensor_inst->enable);
>  }
> @@ -237,8 +236,7 @@ static ssize_t enable_sensor_store(struct device *dev,
>  				   struct device_attribute *attr,
>  				   const char *buf, size_t count)
>  {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct hid_sensor_custom *sensor_inst = platform_get_drvdata(pdev);
> +	struct hid_sensor_custom *sensor_inst = dev_get_drvdata(dev);
>  	int value;
>  	int ret = -EINVAL;
>  
> @@ -283,8 +281,7 @@ static const struct attribute_group enable_sensor_attr_group = {
>  static ssize_t show_value(struct device *dev, struct device_attribute *attr,
>  			  char *buf)
>  {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct hid_sensor_custom *sensor_inst = platform_get_drvdata(pdev);
> +	struct hid_sensor_custom *sensor_inst = dev_get_drvdata(dev);
>  	struct hid_sensor_hub_attribute_info *attribute;
>  	int index, usage, field_index;
>  	char name[HID_CUSTOM_NAME_LENGTH];
> @@ -392,8 +389,7 @@ static ssize_t show_value(struct device *dev, struct device_attribute *attr,
>  static ssize_t store_value(struct device *dev, struct device_attribute *attr,
>  			   const char *buf, size_t count)
>  {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct hid_sensor_custom *sensor_inst = platform_get_drvdata(pdev);
> +	struct hid_sensor_custom *sensor_inst = dev_get_drvdata(dev);
>  	int index, field_index, usage;
>  	char name[HID_CUSTOM_NAME_LENGTH];
>  	int value;
> -- 
> 2.11.0
>