Re: [PATCH 04/87] spi: at91-usart: Convert to platform remove callback returning void

[<Claudiu.Beznea@microchip.com>]

On 03.03.2023 19:19, Uwe Kleine-König wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> 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: Claudiu Beznea <claudiu.beznea@microchip.com>


> ---
>  drivers/spi/spi-at91-usart.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/spi/spi-at91-usart.c b/drivers/spi/spi-at91-usart.c
> index fab9d223e24a..4fb3653b5941 100644
> --- a/drivers/spi/spi-at91-usart.c
> +++ b/drivers/spi/spi-at91-usart.c
> @@ -647,15 +647,13 @@ __maybe_unused static int at91_usart_spi_resume(struct device *dev)
>         return spi_controller_resume(ctrl);
>  }
> 
> -static int at91_usart_spi_remove(struct platform_device *pdev)
> +static void at91_usart_spi_remove(struct platform_device *pdev)
>  {
>         struct spi_controller *ctlr = platform_get_drvdata(pdev);
>         struct at91_usart_spi *aus = spi_controller_get_devdata(ctlr);
> 
>         at91_usart_spi_release_dma(ctlr);
>         clk_disable_unprepare(aus->clk);
> -
> -       return 0;
>  }
> 
>  static const struct dev_pm_ops at91_usart_spi_pm_ops = {
> @@ -670,7 +668,7 @@ static struct platform_driver at91_usart_spi_driver = {
>                 .pm = &at91_usart_spi_pm_ops,
>         },
>         .probe = at91_usart_spi_probe,
> -       .remove = at91_usart_spi_remove,
> +       .remove_new = at91_usart_spi_remove,
>  };
> 
>  module_platform_driver(at91_usart_spi_driver);
> --
> 2.39.1
> 

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