Re: [PATCH 13/18] remoteproc: qcom_wcnss: Convert to platform remove callback returning void

[Caleb Connolly <caleb.connolly@linaro.org>]

On 04/05/2023 20:44, 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@pengutronix.de>

Reviewed-by: Caleb Connolly <caleb.connolly@linaro.org>
> ---
>  drivers/remoteproc/qcom_wcnss.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/remoteproc/qcom_wcnss.c b/drivers/remoteproc/qcom_wcnss.c
> index 0fc317265064..1ed0647bc962 100644
> --- a/drivers/remoteproc/qcom_wcnss.c
> +++ b/drivers/remoteproc/qcom_wcnss.c
> @@ -666,7 +666,7 @@ static int wcnss_probe(struct platform_device *pdev)
>  	return ret;
>  }
>  
> -static int wcnss_remove(struct platform_device *pdev)
> +static void wcnss_remove(struct platform_device *pdev)
>  {
>  	struct qcom_wcnss *wcnss = platform_get_drvdata(pdev);
>  
> @@ -678,8 +678,6 @@ static int wcnss_remove(struct platform_device *pdev)
>  	qcom_remove_smd_subdev(wcnss->rproc, &wcnss->smd_subdev);
>  	wcnss_release_pds(wcnss);
>  	rproc_free(wcnss->rproc);
> -
> -	return 0;
>  }
>  
>  static const struct of_device_id wcnss_of_match[] = {
> @@ -693,7 +691,7 @@ MODULE_DEVICE_TABLE(of, wcnss_of_match);
>  
>  static struct platform_driver wcnss_driver = {
>  	.probe = wcnss_probe,
> -	.remove = wcnss_remove,
> +	.remove_new = wcnss_remove,
>  	.driver = {
>  		.name = "qcom-wcnss-pil",
>  		.of_match_table = wcnss_of_match,

-- 
Kind Regards,
Caleb (they/them)