From a3b4af719e571bd899b7952626c2b4d8ec7c0c77 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Tue, 19 Sep 2023 15:32:02 +0200 Subject: [PATCH] dmaengine: txx9dmac: 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 Link: https://lore.kernel.org/r/20230919133207.1400430-55-u.kleine-koenig@pengutronix.de Signed-off-by: Vinod Koul --- drivers/dma/txx9dmac.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/dma/txx9dmac.c b/drivers/dma/txx9dmac.c index 5b6b375a257e..44ba377b4b5a 100644 --- a/drivers/dma/txx9dmac.c +++ b/drivers/dma/txx9dmac.c @@ -1151,7 +1151,7 @@ static int __init txx9dmac_chan_probe(struct platform_device *pdev) return 0; } -static int txx9dmac_chan_remove(struct platform_device *pdev) +static void txx9dmac_chan_remove(struct platform_device *pdev) { struct txx9dmac_chan *dc = platform_get_drvdata(pdev); @@ -1162,7 +1162,6 @@ static int txx9dmac_chan_remove(struct platform_device *pdev) tasklet_kill(&dc->tasklet); } dc->ddev->chan[pdev->id % TXX9_DMA_MAX_NR_CHANNELS] = NULL; - return 0; } static int __init txx9dmac_probe(struct platform_device *pdev) @@ -1215,7 +1214,7 @@ static int __init txx9dmac_probe(struct platform_device *pdev) return 0; } -static int txx9dmac_remove(struct platform_device *pdev) +static void txx9dmac_remove(struct platform_device *pdev) { struct txx9dmac_dev *ddev = platform_get_drvdata(pdev); @@ -1224,7 +1223,6 @@ static int txx9dmac_remove(struct platform_device *pdev) devm_free_irq(&pdev->dev, ddev->irq, ddev); tasklet_kill(&ddev->tasklet); } - return 0; } static void txx9dmac_shutdown(struct platform_device *pdev) @@ -1262,14 +1260,14 @@ static const struct dev_pm_ops txx9dmac_dev_pm_ops = { }; static struct platform_driver txx9dmac_chan_driver = { - .remove = txx9dmac_chan_remove, + .remove_new = txx9dmac_chan_remove, .driver = { .name = "txx9dmac-chan", }, }; static struct platform_driver txx9dmac_driver = { - .remove = txx9dmac_remove, + .remove_new = txx9dmac_remove, .shutdown = txx9dmac_shutdown, .driver = { .name = "txx9dmac",