usb: ehci-fsl: 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/20230517230239.187727-49-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
index d74fa5b..81d60a6 100644 (file)
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -684,7 +684,7 @@ static const struct ehci_driver_overrides ehci_fsl_overrides __initconst = {
  *
  * Reverses the effect of usb_hcd_fsl_probe().
  */
-static int fsl_ehci_drv_remove(struct platform_device *pdev)
+static void fsl_ehci_drv_remove(struct platform_device *pdev)
 {
        struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
        struct usb_hcd *hcd = platform_get_drvdata(pdev);
@@ -703,13 +703,11 @@ static int fsl_ehci_drv_remove(struct platform_device *pdev)
        if (pdata->exit)
                pdata->exit(pdev);
        usb_put_hcd(hcd);
-
-       return 0;
 }
 
 static struct platform_driver ehci_fsl_driver = {
        .probe = fsl_ehci_drv_probe,
-       .remove = fsl_ehci_drv_remove,
+       .remove_new = fsl_ehci_drv_remove,
        .shutdown = usb_hcd_platform_shutdown,
        .driver = {
                .name = DRV_NAME,