From 97283173effa6e53ea698726ea5d07f7ca06e5cf Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Tue, 19 Sep 2023 15:31:31 +0200 Subject: [PATCH] dmaengine: mediatek: mtk-hsdma: Convert to platform remove callback returning void MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/20230919133207.1400430-24-u.kleine-koenig@pengutronix.de Signed-off-by: Vinod Koul --- drivers/dma/mediatek/mtk-hsdma.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/dma/mediatek/mtk-hsdma.c b/drivers/dma/mediatek/mtk-hsdma.c index 64120767d983..36ff11e909ea 100644 --- a/drivers/dma/mediatek/mtk-hsdma.c +++ b/drivers/dma/mediatek/mtk-hsdma.c @@ -1009,7 +1009,7 @@ err_unregister: return err; } -static int mtk_hsdma_remove(struct platform_device *pdev) +static void mtk_hsdma_remove(struct platform_device *pdev) { struct mtk_hsdma_device *hsdma = platform_get_drvdata(pdev); struct mtk_hsdma_vchan *vc; @@ -1034,13 +1034,11 @@ static int mtk_hsdma_remove(struct platform_device *pdev) dma_async_device_unregister(&hsdma->ddev); of_dma_controller_free(pdev->dev.of_node); - - return 0; } static struct platform_driver mtk_hsdma_driver = { .probe = mtk_hsdma_probe, - .remove = mtk_hsdma_remove, + .remove_new = mtk_hsdma_remove, .driver = { .name = KBUILD_MODNAME, .of_match_table = mtk_hsdma_match,