From 5f8f212fb416dc3600046955fb008732a512fa5c Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Tue, 19 Sep 2023 15:31:40 +0200 Subject: dmaengine: ppc4xx: adma: 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/20230919133207.1400430-33-u.kleine-koenig@pengutronix.de Signed-off-by: Vinod Koul --- drivers/dma/ppc4xx/adma.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/dma/ppc4xx/adma.c b/drivers/dma/ppc4xx/adma.c index f9b82dff3387..bbb60a970dab 100644 --- a/drivers/dma/ppc4xx/adma.c +++ b/drivers/dma/ppc4xx/adma.c @@ -4230,7 +4230,7 @@ out: /** * ppc440spe_adma_remove - remove the asynch device */ -static int ppc440spe_adma_remove(struct platform_device *ofdev) +static void ppc440spe_adma_remove(struct platform_device *ofdev) { struct ppc440spe_adma_device *adev = platform_get_drvdata(ofdev); struct device_node *np = ofdev->dev.of_node; @@ -4278,7 +4278,6 @@ static int ppc440spe_adma_remove(struct platform_device *ofdev) of_address_to_resource(np, 0, &res); release_mem_region(res.start, resource_size(&res)); kfree(adev); - return 0; } /* @@ -4550,7 +4549,7 @@ MODULE_DEVICE_TABLE(of, ppc440spe_adma_of_match); static struct platform_driver ppc440spe_adma_driver = { .probe = ppc440spe_adma_probe, - .remove = ppc440spe_adma_remove, + .remove_new = ppc440spe_adma_remove, .driver = { .name = "PPC440SP(E)-ADMA", .of_match_table = ppc440spe_adma_of_match, -- cgit