usb: oxu210hp-hcd: 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/20230517230239.187727-77-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c
index f998d3f..50c1cca 100644 (file)
--- a/drivers/usb/host/oxu210hp-hcd.c
+++ b/drivers/usb/host/oxu210hp-hcd.c
@@ -4278,14 +4278,12 @@ static void oxu_remove(struct platform_device *pdev, struct usb_hcd *hcd)
        usb_put_hcd(hcd);
 }
 
-static int oxu_drv_remove(struct platform_device *pdev)
+static void oxu_drv_remove(struct platform_device *pdev)
 {
        struct oxu_info *info = platform_get_drvdata(pdev);
 
        oxu_remove(pdev, info->hcd[0]);
        oxu_remove(pdev, info->hcd[1]);
-
-       return 0;
 }
 
 static void oxu_drv_shutdown(struct platform_device *pdev)
@@ -4317,7 +4315,7 @@ static int oxu_drv_resume(struct device *dev)
 
 static struct platform_driver oxu_driver = {
        .probe          = oxu_drv_probe,
-       .remove         = oxu_drv_remove,
+       .remove_new     = oxu_drv_remove,
        .shutdown       = oxu_drv_shutdown,
        .suspend        = oxu_drv_suspend,
        .resume         = oxu_drv_resume,