usb: ehci-ppc-of: 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/20230517230239.187727-56-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/ehci-ppc-of.c b/drivers/usb/host/ehci-ppc-of.c
index b3aa464e9d2c997ef9749664d93b37d022f42292..7fd83e806ae4661631b38bd9e056729f01dac7ff 100644 (file)
--- a/drivers/usb/host/ehci-ppc-of.c
+++ b/drivers/usb/host/ehci-ppc-of.c
@@ -184,7 +184,7 @@ err_irq:
 }
 
 
-static int ehci_hcd_ppc_of_remove(struct platform_device *op)
+static void ehci_hcd_ppc_of_remove(struct platform_device *op)
 {
        struct usb_hcd *hcd = platform_get_drvdata(op);
        struct ehci_hcd *ehci = hcd_to_ehci(hcd);
@@ -216,8 +216,6 @@ static int ehci_hcd_ppc_of_remove(struct platform_device *op)
                }
        }
        usb_put_hcd(hcd);
-
-       return 0;
 }
 
 
@@ -232,7 +230,7 @@ MODULE_DEVICE_TABLE(of, ehci_hcd_ppc_of_match);
 
 static struct platform_driver ehci_hcd_ppc_of_driver = {
        .probe          = ehci_hcd_ppc_of_probe,
-       .remove         = ehci_hcd_ppc_of_remove,
+       .remove_new     = ehci_hcd_ppc_of_remove,
        .shutdown       = usb_hcd_platform_shutdown,
        .driver = {
                .name = "ppc-of-ehci",