usb: chipidea/ci_hdrc_usb2: 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/20230517230239.187727-9-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/chipidea/ci_hdrc_usb2.c b/drivers/usb/chipidea/ci_hdrc_usb2.c
index dc86b12060b56a35692ca8c082d5dc220ac03c0b..1321ee67f3b82edfb0c1a92e983dfe56b75d9bb1 100644 (file)
--- a/drivers/usb/chipidea/ci_hdrc_usb2.c
+++ b/drivers/usb/chipidea/ci_hdrc_usb2.c
@@ -106,20 +106,18 @@ clk_err:
        return ret;
 }
 
-static int ci_hdrc_usb2_remove(struct platform_device *pdev)
+static void ci_hdrc_usb2_remove(struct platform_device *pdev)
 {
        struct ci_hdrc_usb2_priv *priv = platform_get_drvdata(pdev);
 
        pm_runtime_disable(&pdev->dev);
        ci_hdrc_remove_device(priv->ci_pdev);
        clk_disable_unprepare(priv->clk);
-
-       return 0;
 }
 
 static struct platform_driver ci_hdrc_usb2_driver = {
        .probe  = ci_hdrc_usb2_probe,
-       .remove = ci_hdrc_usb2_remove,
+       .remove_new = ci_hdrc_usb2_remove,
        .driver = {
                .name           = "chipidea-usb2",
                .of_match_table = of_match_ptr(ci_hdrc_usb2_of_match),