usbip: vhci_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>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20230517230239.187727-98-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c
index 233265550fc63e3a4cf5a18c56676d286fe8091c..37d1fc34e8a564485dc1243667bf0265e6c5f16d 100644 (file)
--- a/drivers/usb/usbip/vhci_hcd.c
+++ b/drivers/usb/usbip/vhci_hcd.c
@@ -1393,7 +1393,7 @@ put_usb2_hcd:
        return ret;
 }
 
-static int vhci_hcd_remove(struct platform_device *pdev)
+static void vhci_hcd_remove(struct platform_device *pdev)
 {
        struct vhci *vhci = *((void **)dev_get_platdata(&pdev->dev));
 
@@ -1410,8 +1410,6 @@ static int vhci_hcd_remove(struct platform_device *pdev)
 
        vhci->vhci_hcd_hs = NULL;
        vhci->vhci_hcd_ss = NULL;
-
-       return 0;
 }
 
 #ifdef CONFIG_PM
@@ -1485,7 +1483,7 @@ static int vhci_hcd_resume(struct platform_device *pdev)
 
 static struct platform_driver vhci_driver = {
        .probe  = vhci_hcd_probe,
-       .remove = vhci_hcd_remove,
+       .remove_new = vhci_hcd_remove,
        .suspend = vhci_hcd_suspend,
        .resume = vhci_hcd_resume,
        .driver = {