From 32d9a78bb9ff9da0082ea6fdb038bc1bf81f6992 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Thu, 16 Nov 2023 18:33:07 +0100 Subject: [PATCH] coresight: ultrasoc-smb: 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() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Reviewed-by: James Clark Signed-off-by: Uwe Kleine-König Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20231116173301.708873-14-u.kleine-koenig@pengutronix.de --- drivers/hwtracing/coresight/ultrasoc-smb.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/hwtracing/coresight/ultrasoc-smb.c b/drivers/hwtracing/coresight/ultrasoc-smb.c index 6e32d31a95fe..2092433ff86e 100644 --- a/drivers/hwtracing/coresight/ultrasoc-smb.c +++ b/drivers/hwtracing/coresight/ultrasoc-smb.c @@ -601,15 +601,13 @@ static int smb_probe(struct platform_device *pdev) return 0; } -static int smb_remove(struct platform_device *pdev) +static void smb_remove(struct platform_device *pdev) { struct smb_drv_data *drvdata = platform_get_drvdata(pdev); smb_unregister_sink(drvdata); smb_config_inport(&pdev->dev, false); - - return 0; } #ifdef CONFIG_ACPI @@ -627,7 +625,7 @@ static struct platform_driver smb_driver = { .suppress_bind_attrs = true, }, .probe = smb_probe, - .remove = smb_remove, + .remove_new = smb_remove, }; module_platform_driver(smb_driver);