Re: [PATCH 04/27] drivers/thermal/rcar_gen3_thermal: Convert to platform remove callback returning void

[Niklas Söderlund]

On 2023-07-12 16:12:35 +0800, Yangtao Li 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.
> 
> Cc: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
> Signed-off-by: Yangtao Li <frank.li@xxxxxxxx>

Reviewed-by: Niklas Söderlund <niklas.soderlund@xxxxxxxxxxxx>

> ---
>  drivers/thermal/rcar_gen3_thermal.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/thermal/rcar_gen3_thermal.c b/drivers/thermal/rcar_gen3_thermal.c
> index 9029d01e029b..1405163caa34 100644
> --- a/drivers/thermal/rcar_gen3_thermal.c
> +++ b/drivers/thermal/rcar_gen3_thermal.c
> @@ -432,14 +432,12 @@ static const struct of_device_id rcar_gen3_thermal_dt_ids[] = {
>  };
>  MODULE_DEVICE_TABLE(of, rcar_gen3_thermal_dt_ids);
>  
> -static int rcar_gen3_thermal_remove(struct platform_device *pdev)
> +static void rcar_gen3_thermal_remove(struct platform_device *pdev)
>  {
>  	struct device *dev = &pdev->dev;
>  
>  	pm_runtime_put(dev);
>  	pm_runtime_disable(dev);
> -
> -	return 0;
>  }
>  
>  static void rcar_gen3_hwmon_action(void *data)
> @@ -594,7 +592,7 @@ static struct platform_driver rcar_gen3_thermal_driver = {
>  		.of_match_table = rcar_gen3_thermal_dt_ids,
>  	},
>  	.probe		= rcar_gen3_thermal_probe,
> -	.remove		= rcar_gen3_thermal_remove,
> +	.remove_new	= rcar_gen3_thermal_remove,
>  };
>  module_platform_driver(rcar_gen3_thermal_driver);
>  
> -- 
> 2.39.0
> 

-- 
Kind Regards,
Niklas Söderlund