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Hi, Uwe:
On Tue, 2024-04-09 at 19:02 +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() will be renamed to .remove().
>
> Trivially convert this driver from always returning zero in the remove
> callback to the void returning variant.
Reviewed-by: CK Hu <ck.hu@mediatek.com>
>
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
> ---
> drivers/gpu/drm/mediatek/mtk_padding.c | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_padding.c b/drivers/gpu/drm/mediatek/mtk_padding.c
> index 0d6451c149b6..9f92b720aaae 100644
> --- a/drivers/gpu/drm/mediatek/mtk_padding.c
> +++ b/drivers/gpu/drm/mediatek/mtk_padding.c
> @@ -137,10 +137,9 @@ static int mtk_padding_probe(struct platform_device *pdev)
> return 0;
> }
>
> -static int mtk_padding_remove(struct platform_device *pdev)
> +static void mtk_padding_remove(struct platform_device *pdev)
> {
> component_del(&pdev->dev, &mtk_padding_component_ops);
> -return 0;
> }
>
> static const struct of_device_id mtk_padding_driver_dt_match[] = {
> @@ -151,7 +150,7 @@ MODULE_DEVICE_TABLE(of, mtk_padding_driver_dt_match);
>
> struct platform_driver mtk_padding_driver = {
> .probe= mtk_padding_probe,
> -.remove= mtk_padding_remove,
> +.remove_new= mtk_padding_remove,
> .driver= {
> .name= "mediatek-disp-padding",
> .owner= THIS_MODULE,
> --
> 2.43.0
>
</pre>
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