[PATCH 94/97] usb: typec: tcpci_mt6360: Convert to platform remove callback returning void

[Guenter Roeck]

On Thu, May 18, 2023 at 01:02:36AM +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 ignored (apart from
> emitting a warning) 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. Eventually after all drivers are converted, .remove_new() is
> renamed to .remove().
> 
> 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>

Acked-by: Guenter Roeck <linux at roeck-us.net>

> ---
>  drivers/usb/typec/tcpm/tcpci_mt6370.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/usb/typec/tcpm/tcpci_mt6370.c b/drivers/usb/typec/tcpm/tcpci_mt6370.c
> index c5bb201a5163..2a079464b398 100644
> --- a/drivers/usb/typec/tcpm/tcpci_mt6370.c
> +++ b/drivers/usb/typec/tcpm/tcpci_mt6370.c
> @@ -178,12 +178,10 @@ static int mt6370_tcpc_probe(struct platform_device *pdev)
>  	return 0;
>  }
>  
> -static int mt6370_tcpc_remove(struct platform_device *pdev)
> +static void mt6370_tcpc_remove(struct platform_device *pdev)
>  {
>  	dev_pm_clear_wake_irq(&pdev->dev);
>  	device_init_wakeup(&pdev->dev, false);
> -
> -	return 0;
>  }
>  
>  static const struct of_device_id mt6370_tcpc_devid_table[] = {
> @@ -198,7 +196,7 @@ static struct platform_driver mt6370_tcpc_driver = {
>  		.of_match_table = mt6370_tcpc_devid_table,
>  	},
>  	.probe = mt6370_tcpc_probe,
> -	.remove = mt6370_tcpc_remove,
> +	.remove_new = mt6370_tcpc_remove,
>  };
>  module_platform_driver(mt6370_tcpc_driver);
>  
> -- 
> 2.39.2
>