[PATCH v4 68/80] drm/panel: panel-dsi-cm: remove extra 'if'

[Sam Ravnborg]

Hi Tomi,

On Tue, Nov 24, 2020 at 02:45:26PM +0200, Tomi Valkeinen wrote:
> We have a useless 'if' in the dsicm_bl_update_status(), a left over from
> the conversion to DRM model. Drop the if.
> 
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen at ti.com>
Reviewed-by: Sam Ravnborg <sam at ravnborg.org>

But with a few comments.

> ---
>  drivers/gpu/drm/panel/panel-dsi-cm.c | 10 ++++------
>  1 file changed, 4 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/panel/panel-dsi-cm.c b/drivers/gpu/drm/panel/panel-dsi-cm.c
> index 1e7f73340736..c17ed728c695 100644
> --- a/drivers/gpu/drm/panel/panel-dsi-cm.c
> +++ b/drivers/gpu/drm/panel/panel-dsi-cm.c
> @@ -194,7 +194,7 @@ static int dsicm_set_update_window(struct panel_drv_data *ddata)
>  static int dsicm_bl_update_status(struct backlight_device *dev)
>  {
>  	struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev);
> -	int r = 0;
> +	int r;
>  	int level;
>  
>  	if (dev->props.fb_blank == FB_BLANK_UNBLANK &&

Unrelated to this patch - but here it would be better to use
level = backlight_get_brightness(dev);

level is 0 is backlight is off.

	Sam


> @@ -207,11 +207,9 @@ static int dsicm_bl_update_status(struct backlight_device *dev)
>  
>  	mutex_lock(&ddata->lock);
>  
> -	if (ddata->enabled) {
> -		if (!r)
> -			r = dsicm_dcs_write_1(
> -				ddata, MIPI_DCS_SET_DISPLAY_BRIGHTNESS, level);
> -	}
> +	if (ddata->enabled)
> +		r = dsicm_dcs_write_1(ddata, MIPI_DCS_SET_DISPLAY_BRIGHTNESS,
> +				      level);
>  
>  	mutex_unlock(&ddata->lock);
>  
> -- 
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