From b5f095a70117629c3abb49bcb07dfa954d275e99 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Tue, 19 Sep 2023 15:31:16 +0200 Subject: [PATCH] dmaengine: dma-axi-dmac: 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/20230919133207.1400430-9-u.kleine-koenig@pengutronix.de Signed-off-by: Vinod Koul --- drivers/dma/dma-axi-dmac.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/dma/dma-axi-dmac.c b/drivers/dma/dma-axi-dmac.c index fc7cdad37161..a6d235bc8444 100644 --- a/drivers/dma/dma-axi-dmac.c +++ b/drivers/dma/dma-axi-dmac.c @@ -1029,7 +1029,7 @@ err_clk_disable: return ret; } -static int axi_dmac_remove(struct platform_device *pdev) +static void axi_dmac_remove(struct platform_device *pdev) { struct axi_dmac *dmac = platform_get_drvdata(pdev); @@ -1038,8 +1038,6 @@ static int axi_dmac_remove(struct platform_device *pdev) tasklet_kill(&dmac->chan.vchan.task); dma_async_device_unregister(&dmac->dma_dev); clk_disable_unprepare(dmac->clk); - - return 0; } static const struct of_device_id axi_dmac_of_match_table[] = { @@ -1054,7 +1052,7 @@ static struct platform_driver axi_dmac_driver = { .of_match_table = axi_dmac_of_match_table, }, .probe = axi_dmac_probe, - .remove = axi_dmac_remove, + .remove_new = axi_dmac_remove, }; module_platform_driver(axi_dmac_driver);