usb: ohci-platform: 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>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20230517230239.187727-70-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/ohci-platform.c b/drivers/usb/host/ohci-platform.c
index a843050..03232c5 100644 (file)
--- a/drivers/usb/host/ohci-platform.c
+++ b/drivers/usb/host/ohci-platform.c
@@ -239,7 +239,7 @@ err_put_clks:
        return err;
 }
 
-static int ohci_platform_remove(struct platform_device *dev)
+static void ohci_platform_remove(struct platform_device *dev)
 {
        struct usb_hcd *hcd = platform_get_drvdata(dev);
        struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
@@ -264,8 +264,6 @@ static int ohci_platform_remove(struct platform_device *dev)
 
        if (pdata == &ohci_platform_defaults)
                dev->dev.platform_data = NULL;
-
-       return 0;
 }
 
 #ifdef CONFIG_PM_SLEEP
@@ -347,7 +345,7 @@ static const struct dev_pm_ops ohci_platform_pm_ops = {
 static struct platform_driver ohci_platform_driver = {
        .id_table       = ohci_platform_table,
        .probe          = ohci_platform_probe,
-       .remove         = ohci_platform_remove,
+       .remove_new     = ohci_platform_remove,
        .shutdown       = usb_hcd_platform_shutdown,
        .driver         = {
                .name   = "ohci-platform",