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usb: ehci-platform: Convert to platform remove callback returning void

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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 <u.kleine-koenig@pengutronix.de>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20230517230239.187727-55-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Uwe Kleine-König 2023-05-18 01:01:56 +02:00 committed by Greg Kroah-Hartman
parent c554264609
commit b700b067f6
1 changed files with 2 additions and 4 deletions
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6
drivers/usb/host/ehci-platform.c
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@ -400,7 +400,7 @@ err_put_clks:
return err;
}
static int ehci_platform_remove(struct platform_device *dev)
static void ehci_platform_remove(struct platform_device *dev)
{
struct usb_hcd *hcd = platform_get_drvdata(dev);
struct usb_ehci_pdata *pdata = dev_get_platdata(&dev->dev);
@ -424,8 +424,6 @@ static int ehci_platform_remove(struct platform_device *dev)
if (pdata == &ehci_platform_defaults)
dev->dev.platform_data = NULL;
return 0;
}
static int __maybe_unused ehci_platform_suspend(struct device *dev)
@ -511,7 +509,7 @@ static SIMPLE_DEV_PM_OPS(ehci_platform_pm_ops, ehci_platform_suspend,
static struct platform_driver ehci_platform_driver = {
.id_table = ehci_platform_table,
.probe = ehci_platform_probe,
.remove = ehci_platform_remove,
.remove_new = ehci_platform_remove,
.shutdown = usb_hcd_platform_shutdown,
.driver = {
.name = "ehci-platform",