From a8c85540bee12d492904a430c0c1105a4b7b101c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Tue, 19 Sep 2023 15:31:17 +0200 Subject: [PATCH] dmaengine: dma-jz4780: 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: Philippe Mathieu-Daudé Reviewed-by: Paul Cercueil Link: https://lore.kernel.org/r/20230919133207.1400430-10-u.kleine-koenig@pengutronix.de Signed-off-by: Vinod Koul --- drivers/dma/dma-jz4780.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/dma/dma-jz4780.c b/drivers/dma/dma-jz4780.c index adbd47bd6adf..c9cfa341db51 100644 --- a/drivers/dma/dma-jz4780.c +++ b/drivers/dma/dma-jz4780.c @@ -1008,7 +1008,7 @@ err_disable_clk: return ret; } -static int jz4780_dma_remove(struct platform_device *pdev) +static void jz4780_dma_remove(struct platform_device *pdev) { struct jz4780_dma_dev *jzdma = platform_get_drvdata(pdev); int i; @@ -1020,8 +1020,6 @@ static int jz4780_dma_remove(struct platform_device *pdev) for (i = 0; i < jzdma->soc_data->nb_channels; i++) tasklet_kill(&jzdma->chan[i].vchan.task); - - return 0; } static const struct jz4780_dma_soc_data jz4740_dma_soc_data = { @@ -1124,7 +1122,7 @@ MODULE_DEVICE_TABLE(of, jz4780_dma_dt_match); static struct platform_driver jz4780_dma_driver = { .probe = jz4780_dma_probe, - .remove = jz4780_dma_remove, + .remove_new = jz4780_dma_remove, .driver = { .name = "jz4780-dma", .of_match_table = jz4780_dma_dt_match,