From: Uwe Kleine-König Date: Mon, 18 Sep 2023 13:36:57 +0000 (+0200) Subject: power: supply: wm831x_backup: Convert to platform remove callback returning void X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=fc7b34ae1347f4eb36f065458e53d6065cd85928;p=users%2Fjedix%2Flinux-maple.git power: supply: wm831x_backup: Convert to platform remove callback returning void 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/20230918133700.1254499-30-u.kleine-koenig@pengutronix.de Signed-off-by: Sebastian Reichel --- diff --git a/drivers/power/supply/wm831x_backup.c b/drivers/power/supply/wm831x_backup.c index ffb265b8526d2..1a7265660adeb 100644 --- a/drivers/power/supply/wm831x_backup.c +++ b/drivers/power/supply/wm831x_backup.c @@ -197,18 +197,16 @@ static int wm831x_backup_probe(struct platform_device *pdev) return PTR_ERR_OR_ZERO(devdata->backup); } -static int wm831x_backup_remove(struct platform_device *pdev) +static void wm831x_backup_remove(struct platform_device *pdev) { struct wm831x_backup *devdata = platform_get_drvdata(pdev); power_supply_unregister(devdata->backup); - - return 0; } static struct platform_driver wm831x_backup_driver = { .probe = wm831x_backup_probe, - .remove = wm831x_backup_remove, + .remove_new = wm831x_backup_remove, .driver = { .name = "wm831x-backup", },