usb: musb: jz4740: 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 (mostly) ignored
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.

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>
Reviewed-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20230405141009.3400693-3-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/musb/jz4740.c b/drivers/usb/musb/jz4740.c
index c7b1d2a..5aabdd7 100644 (file)
--- a/drivers/usb/musb/jz4740.c
+++ b/drivers/usb/musb/jz4740.c
@@ -308,14 +308,12 @@ err_platform_device_put:
        return ret;
 }
 
-static int jz4740_remove(struct platform_device *pdev)
+static void jz4740_remove(struct platform_device *pdev)
 {
        struct jz4740_glue *glue = platform_get_drvdata(pdev);
 
        platform_device_unregister(glue->pdev);
        clk_disable_unprepare(glue->clk);
-
-       return 0;
 }
 
 static const struct of_device_id jz4740_musb_of_match[] = {
@@ -327,7 +325,7 @@ MODULE_DEVICE_TABLE(of, jz4740_musb_of_match);
 
 static struct platform_driver jz4740_driver = {
        .probe          = jz4740_probe,
-       .remove         = jz4740_remove,
+       .remove_new     = jz4740_remove,
        .driver         = {
                .name   = "musb-jz4740",
                .of_match_table = jz4740_musb_of_match,