usb: ohci-da8xx: 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/20230517230239.187727-66-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/ohci-da8xx.c b/drivers/usb/host/ohci-da8xx.c
index d4818e8..e4191a8 100644 (file)
--- a/drivers/usb/host/ohci-da8xx.c
+++ b/drivers/usb/host/ohci-da8xx.c
@@ -469,14 +469,12 @@ err:
        return error;
 }
 
-static int ohci_da8xx_remove(struct platform_device *pdev)
+static void ohci_da8xx_remove(struct platform_device *pdev)
 {
        struct usb_hcd  *hcd = platform_get_drvdata(pdev);
 
        usb_remove_hcd(hcd);
        usb_put_hcd(hcd);
-
-       return 0;
 }
 
 #ifdef CONFIG_PM
@@ -533,7 +531,7 @@ static const struct ohci_driver_overrides da8xx_overrides __initconst = {
  */
 static struct platform_driver ohci_hcd_da8xx_driver = {
        .probe          = ohci_da8xx_probe,
-       .remove         = ohci_da8xx_remove,
+       .remove_new     = ohci_da8xx_remove,
        .shutdown       = usb_hcd_platform_shutdown,
 #ifdef CONFIG_PM
        .suspend        = ohci_da8xx_suspend,