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usb: xhci-mtk: 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.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230530071913.2192214-4-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Uwe Kleine-König 2023-05-30 09:19:10 +02:00 committed by Greg Kroah-Hartman
parent 3a8d85c43d
commit d89dfff5ea
1 changed files with 2 additions and 4 deletions
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6
drivers/usb/host/xhci-mtk.c
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@ -673,7 +673,7 @@ disable_pm:
return ret;
}
static int xhci_mtk_remove(struct platform_device *pdev)
static void xhci_mtk_remove(struct platform_device *pdev)
{
struct xhci_hcd_mtk *mtk = platform_get_drvdata(pdev);
struct usb_hcd *hcd = mtk->hcd;
@ -703,8 +703,6 @@ static int xhci_mtk_remove(struct platform_device *pdev)
pm_runtime_disable(dev);
pm_runtime_put_noidle(dev);
pm_runtime_set_suspended(dev);
return 0;
}
static int __maybe_unused xhci_mtk_suspend(struct device *dev)
@ -824,7 +822,7 @@ MODULE_DEVICE_TABLE(of, mtk_xhci_of_match);
static struct platform_driver mtk_xhci_driver = {
.probe = xhci_mtk_probe,
.remove = xhci_mtk_remove,
.remove_new = xhci_mtk_remove,
.driver = {
.name = "xhci-mtk",
.pm = DEV_PM_OPS,