Re: [PATCH v3 60/62] mmc: sdhci_am654: Convert to platform remove callback returning void

[Adrian Hunter]

On 27/07/23 10:00, 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>

Acked-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>

> ---
>  drivers/mmc/host/sdhci_am654.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/mmc/host/sdhci_am654.c b/drivers/mmc/host/sdhci_am654.c
> index 1cc84739ef2f..c125485ba80e 100644
> --- a/drivers/mmc/host/sdhci_am654.c
> +++ b/drivers/mmc/host/sdhci_am654.c
> @@ -866,7 +866,7 @@ static int sdhci_am654_probe(struct platform_device *pdev)
>  	return ret;
>  }
>  
> -static int sdhci_am654_remove(struct platform_device *pdev)
> +static void sdhci_am654_remove(struct platform_device *pdev)
>  {
>  	struct sdhci_host *host = platform_get_drvdata(pdev);
>  	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> @@ -882,7 +882,6 @@ static int sdhci_am654_remove(struct platform_device *pdev)
>  	pm_runtime_disable(dev);
>  	pm_runtime_put_noidle(dev);
>  	sdhci_pltfm_free(pdev);
> -	return 0;
>  }
>  
>  #ifdef CONFIG_PM
> @@ -994,7 +993,7 @@ static struct platform_driver sdhci_am654_driver = {
>  		.of_match_table = sdhci_am654_of_match,
>  	},
>  	.probe = sdhci_am654_probe,
> -	.remove = sdhci_am654_remove,
> +	.remove_new = sdhci_am654_remove,
>  };
>  
>  module_platform_driver(sdhci_am654_driver);