usb: gadget/tegra-xudc: 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 <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230517230239.187727-44-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/gadget/udc/tegra-xudc.c b/drivers/usb/gadget/udc/tegra-xudc.c
index 34e9c1d..83eaa65 100644 (file)
--- a/drivers/usb/gadget/udc/tegra-xudc.c
+++ b/drivers/usb/gadget/udc/tegra-xudc.c
@@ -3906,7 +3906,7 @@ put_padctl:
        return err;
 }
 
-static int tegra_xudc_remove(struct platform_device *pdev)
+static void tegra_xudc_remove(struct platform_device *pdev)
 {
        struct tegra_xudc *xudc = platform_get_drvdata(pdev);
        unsigned int i;
@@ -3936,8 +3936,6 @@ static int tegra_xudc_remove(struct platform_device *pdev)
        pm_runtime_put(xudc->dev);
 
        tegra_xusb_padctl_put(xudc->padctl);
-
-       return 0;
 }
 
 static int __maybe_unused tegra_xudc_powergate(struct tegra_xudc *xudc)
@@ -4063,7 +4061,7 @@ static const struct dev_pm_ops tegra_xudc_pm_ops = {
 
 static struct platform_driver tegra_xudc_driver = {
        .probe = tegra_xudc_probe,
-       .remove = tegra_xudc_remove,
+       .remove_new = tegra_xudc_remove,
        .driver = {
                .name = "tegra-xudc",
                .pm = &tegra_xudc_pm_ops,