linux-kernel - Re: [PATCH 2/2] drm/omap: simplify getting .driver

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Date:   Fri, 22 Mar 2019 08:19:49 +0000
From:   Kieran Bingham <kieran.bingham+renesas@...asonboard.com>
To:     Wolfram Sang <wsa+renesas@...g-engineering.com>,
        linux-kernel@...r.kernel.org
Cc:     linux-renesas-soc@...r.kernel.org,
        Tomi Valkeinen <tomi.valkeinen@...com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH 2/2] drm/omap: simplify getting .driver_data

Hi Wolfram,

Thank you for the patch,


On 19/03/2019 16:36, 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>

As with the other in this series, looks good to me.

Reviewed-by: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>


> ---
> 
> Build tested only. buildbot is happy.
> 
>  drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c | 18 ++++++------------
>  1 file changed, 6 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
> index 29692a5217c5..88d4b0c60689 100644
> --- a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
> +++ b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
> @@ -412,8 +412,7 @@ static const struct backlight_ops dsicm_bl_ops = {
>  static ssize_t dsicm_num_errors_show(struct device *dev,
>  		struct device_attribute *attr, char *buf)
>  {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
> +	struct panel_drv_data *ddata = dev_get_drvdata(dev);
>  	struct omap_dss_device *src = ddata->dssdev.src;
>  	u8 errors = 0;
>  	int r;
> @@ -444,8 +443,7 @@ static ssize_t dsicm_num_errors_show(struct device *dev,
>  static ssize_t dsicm_hw_revision_show(struct device *dev,
>  		struct device_attribute *attr, char *buf)
>  {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
> +	struct panel_drv_data *ddata = dev_get_drvdata(dev);
>  	struct omap_dss_device *src = ddata->dssdev.src;
>  	u8 id1, id2, id3;
>  	int r;
> @@ -476,8 +474,7 @@ static ssize_t dsicm_store_ulps(struct device *dev,
>  		struct device_attribute *attr,
>  		const char *buf, size_t count)
>  {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
> +	struct panel_drv_data *ddata = dev_get_drvdata(dev);
>  	struct omap_dss_device *src = ddata->dssdev.src;
>  	unsigned long t;
>  	int r;
> @@ -511,8 +508,7 @@ static ssize_t dsicm_show_ulps(struct device *dev,
>  		struct device_attribute *attr,
>  		char *buf)
>  {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
> +	struct panel_drv_data *ddata = dev_get_drvdata(dev);
>  	unsigned int t;
>  
>  	mutex_lock(&ddata->lock);
> @@ -526,8 +522,7 @@ static ssize_t dsicm_store_ulps_timeout(struct device *dev,
>  		struct device_attribute *attr,
>  		const char *buf, size_t count)
>  {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
> +	struct panel_drv_data *ddata = dev_get_drvdata(dev);
>  	struct omap_dss_device *src = ddata->dssdev.src;
>  	unsigned long t;
>  	int r;
> @@ -558,8 +553,7 @@ static ssize_t dsicm_show_ulps_timeout(struct device *dev,
>  		struct device_attribute *attr,
>  		char *buf)
>  {
> -	struct platform_device *pdev = to_platform_device(dev);
> -	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
> +	struct panel_drv_data *ddata = dev_get_drvdata(dev);
>  	unsigned int t;
>  
>  	mutex_lock(&ddata->lock);
>