[PATCH 07/53] drm/bridge: cdns-dsi: Convert to platform remove callback returning void

[Laurent Pinchart]

Hi Uwe,

Thank you for the patch.

On Sun, May 07, 2023 at 06:25:30PM +0200, Uwe Kleine-König wrote:
> The .remove() callback for a platform driver returns an int which makes
> many driver authors wrongly assume it's possible to do error handling by
> returning an error code. However the value returned is (mostly) ignored
> and this typically results in resource leaks. To improve here there is a
> quest to make the remove callback return void. In the first step of this
> quest all drivers are converted to .remove_new() which already returns
> void.
> 
> Trivially convert this driver from always returning zero in the remove
> callback to the void returning variant.
> 
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>

Reviewed-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>

> ---
>  drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c b/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c
> index 5dbfc7226b31..f50d65f54314 100644
> --- a/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c
> +++ b/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c
> @@ -1278,7 +1278,7 @@ static int cdns_dsi_drm_probe(struct platform_device *pdev)
>  	return ret;
>  }
>  
> -static int cdns_dsi_drm_remove(struct platform_device *pdev)
> +static void cdns_dsi_drm_remove(struct platform_device *pdev)
>  {
>  	struct cdns_dsi *dsi = platform_get_drvdata(pdev);
>  
> @@ -1288,8 +1288,6 @@ static int cdns_dsi_drm_remove(struct platform_device *pdev)
>  		dsi->platform_ops->deinit(dsi);
>  
>  	pm_runtime_disable(&pdev->dev);
> -
> -	return 0;
>  }
>  
>  static const struct of_device_id cdns_dsi_of_match[] = {
> @@ -1303,7 +1301,7 @@ MODULE_DEVICE_TABLE(of, cdns_dsi_of_match);
>  
>  static struct platform_driver cdns_dsi_platform_driver = {
>  	.probe  = cdns_dsi_drm_probe,
> -	.remove = cdns_dsi_drm_remove,
> +	.remove_new = cdns_dsi_drm_remove,
>  	.driver = {
>  		.name   = "cdns-dsi",
>  		.of_match_table = cdns_dsi_of_match,
> -- 
> 2.39.2
> 

-- 
Regards,

Laurent Pinchart