Re: [PATCH 01/59] dma: altera-msgdma: Convert to platform remove callback returning void

[Olivier Dautricourt <olivierdautricourt@gmail.com>]

On Tue, Sep 19, 2023 at 03:31:09PM +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.

Acked-by: Olivier Dautricourt <olivierdautricourt@gmail.com>

Thanks

> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
> ---
>  drivers/dma/altera-msgdma.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/dma/altera-msgdma.c b/drivers/dma/altera-msgdma.c
> index 4153c2edb049..a8e3615235b8 100644
> --- a/drivers/dma/altera-msgdma.c
> +++ b/drivers/dma/altera-msgdma.c
> @@ -923,7 +923,7 @@ static int msgdma_probe(struct platform_device *pdev)
>   *
>   * Return: Always '0'
>   */
> -static int msgdma_remove(struct platform_device *pdev)
> +static void msgdma_remove(struct platform_device *pdev)
>  {
>  	struct msgdma_device *mdev = platform_get_drvdata(pdev);
>  
> @@ -933,8 +933,6 @@ static int msgdma_remove(struct platform_device *pdev)
>  	msgdma_dev_remove(mdev);
>  
>  	dev_notice(&pdev->dev, "Altera mSGDMA driver removed\n");
> -
> -	return 0;
>  }
>  
>  #ifdef CONFIG_OF
> @@ -952,7 +950,7 @@ static struct platform_driver msgdma_driver = {
>  		.of_match_table = of_match_ptr(msgdma_match),
>  	},
>  	.probe = msgdma_probe,
> -	.remove = msgdma_remove,
> +	.remove_new = msgdma_remove,
>  };
>  
>  module_platform_driver(msgdma_driver);
> -- 
> 2.40.1
>