soc/mediatek: mtk-mmsys: Convert to platform remove callback returning void

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: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230925095532.1984344-16-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

1 files changed, 2 insertions, 4 deletions

diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c
index ffb75711a1da..88209102ff3b 100644
--- a/drivers/soc/mediatek/mtk-mmsys.c
+++ b/drivers/soc/mediatek/mtk-mmsys.c
@@ -410,14 +410,12 @@ out_probe_done:
 	return 0;
 }
 
-static int mtk_mmsys_remove(struct platform_device *pdev)
+static void mtk_mmsys_remove(struct platform_device *pdev)
 {
 	struct mtk_mmsys *mmsys = platform_get_drvdata(pdev);
 
 	platform_device_unregister(mmsys->drm_pdev);
 	platform_device_unregister(mmsys->clks_pdev);
-
-	return 0;
 }
 
 static const struct of_device_id of_match_mtk_mmsys[] = {
@@ -449,7 +447,7 @@ static struct platform_driver mtk_mmsys_drv = {
 		.of_match_table = of_match_mtk_mmsys,
 	},
 	.probe = mtk_mmsys_probe,
-	.remove = mtk_mmsys_remove,
+	.remove_new = mtk_mmsys_remove,
 };
 module_platform_driver(mtk_mmsys_drv);