From c0f0d93fc1da36de564da9b3f0462b5bdc4b1948 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Tue, 19 Sep 2023 15:31:33 +0200 Subject: [PATCH] dmaengine: mmp_pdma: 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/20230919133207.1400430-26-u.kleine-koenig@pengutronix.de Signed-off-by: Vinod Koul --- drivers/dma/mmp_pdma.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/dma/mmp_pdma.c b/drivers/dma/mmp_pdma.c index ebdfdcbb4f7a..492ec491a59b 100644 --- a/drivers/dma/mmp_pdma.c +++ b/drivers/dma/mmp_pdma.c @@ -932,7 +932,7 @@ static void dma_do_tasklet(struct tasklet_struct *t) } } -static int mmp_pdma_remove(struct platform_device *op) +static void mmp_pdma_remove(struct platform_device *op) { struct mmp_pdma_device *pdev = platform_get_drvdata(op); struct mmp_pdma_phy *phy; @@ -958,7 +958,6 @@ static int mmp_pdma_remove(struct platform_device *op) } dma_async_device_unregister(&pdev->device); - return 0; } static int mmp_pdma_chan_init(struct mmp_pdma_device *pdev, int idx, int irq) @@ -1141,7 +1140,7 @@ static struct platform_driver mmp_pdma_driver = { }, .id_table = mmp_pdma_id_table, .probe = mmp_pdma_probe, - .remove = mmp_pdma_remove, + .remove_new = mmp_pdma_remove, }; module_platform_driver(mmp_pdma_driver);