usb: chipidea: npcm: 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() will be 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/91311e53e9432ae84d5720485c3b436fb7f06227.1709886922.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/chipidea/ci_hdrc_npcm.c b/drivers/usb/chipidea/ci_hdrc_npcm.c
index e4a191e02ceb184bd2e8ca9b8c47435093b1b593..b14127873c559e9550dcea9b581580efd317a7c6 100644 (file)
--- a/drivers/usb/chipidea/ci_hdrc_npcm.c
+++ b/drivers/usb/chipidea/ci_hdrc_npcm.c
@@ -80,15 +80,13 @@ clk_err:
        return ret;
 }
 
-static int npcm_udc_remove(struct platform_device *pdev)
+static void npcm_udc_remove(struct platform_device *pdev)
 {
        struct npcm_udc_data *ci = platform_get_drvdata(pdev);
 
        pm_runtime_disable(&pdev->dev);
        ci_hdrc_remove_device(ci->ci);
        clk_disable_unprepare(ci->core_clk);
-
-       return 0;
 }
 
 static const struct of_device_id npcm_udc_dt_match[] = {
@@ -100,7 +98,7 @@ MODULE_DEVICE_TABLE(of, npcm_udc_dt_match);
 
 static struct platform_driver npcm_udc_driver = {
        .probe = npcm_udc_probe,
-       .remove = npcm_udc_remove,
+       .remove_new = npcm_udc_remove,
        .driver = {
                .name = "npcm_udc",
                .of_match_table = npcm_udc_dt_match,