usb: ohci-spear: 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/20230517230239.187727-75-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/ohci-spear.c b/drivers/usb/host/ohci-spear.c
index 196951a..f4b2656 100644 (file)
--- a/drivers/usb/host/ohci-spear.c
+++ b/drivers/usb/host/ohci-spear.c
@@ -98,7 +98,7 @@ fail:
        return retval;
 }
 
-static int spear_ohci_hcd_drv_remove(struct platform_device *pdev)
+static void spear_ohci_hcd_drv_remove(struct platform_device *pdev)
 {
        struct usb_hcd *hcd = platform_get_drvdata(pdev);
        struct spear_ohci *sohci_p = to_spear_ohci(hcd);
@@ -108,7 +108,6 @@ static int spear_ohci_hcd_drv_remove(struct platform_device *pdev)
                clk_disable_unprepare(sohci_p->clk);
 
        usb_put_hcd(hcd);
-       return 0;
 }
 
 #if defined(CONFIG_PM)
@@ -159,7 +158,7 @@ MODULE_DEVICE_TABLE(of, spear_ohci_id_table);
 /* Driver definition to register with the platform bus */
 static struct platform_driver spear_ohci_hcd_driver = {
        .probe =        spear_ohci_hcd_drv_probe,
-       .remove =       spear_ohci_hcd_drv_remove,
+       .remove_new =   spear_ohci_hcd_drv_remove,
 #ifdef CONFIG_PM
        .suspend =      spear_ohci_hcd_drv_suspend,
        .resume =       spear_ohci_hcd_drv_resume,