From 3f35533053a4e9983e507ba773d5f908c97b049f Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Mon, 4 Mar 2024 23:30:10 +0100 Subject: sbus: display7seg: 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. Signed-off-by: Uwe Kleine-König Reviewed-by: Andreas Larsson Signed-off-by: Andreas Larsson Link: https://lore.kernel.org/r/dc10c77a6ababab6ffdb344982e8a04cc337bdc7.1709591118.git.u.kleine-koenig@pengutronix.de --- drivers/sbus/char/display7seg.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'drivers/sbus') diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c index 18e6f84e754f..521cf8affe65 100644 --- a/drivers/sbus/char/display7seg.c +++ b/drivers/sbus/char/display7seg.c @@ -229,7 +229,7 @@ out_iounmap: goto out; } -static int d7s_remove(struct platform_device *op) +static void d7s_remove(struct platform_device *op) { struct d7s *p = dev_get_drvdata(&op->dev); u8 regs = readb(p->regs); @@ -245,8 +245,6 @@ static int d7s_remove(struct platform_device *op) misc_deregister(&d7s_miscdev); of_iounmap(&op->resource[0], p->regs, sizeof(u8)); - - return 0; } static const struct of_device_id d7s_match[] = { @@ -263,7 +261,7 @@ static struct platform_driver d7s_driver = { .of_match_table = d7s_match, }, .probe = d7s_probe, - .remove = d7s_remove, + .remove_new = d7s_remove, }; module_platform_driver(d7s_driver); -- cgit v1.2.3