powerpc: gpio_mdio: 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>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/8a5ac8044578694879e919322dbd46f140b64950.1708529736.git.u.kleine-koenig@pengutronix.de

diff --git a/arch/powerpc/platforms/pasemi/gpio_mdio.c b/arch/powerpc/platforms/pasemi/gpio_mdio.c
index fd130fe7a65acd35b8fe9f908e5529b8218055b4..4e983af3294922c415140a1f4101c3f5001303ef 100644 (file)
--- a/arch/powerpc/platforms/pasemi/gpio_mdio.c
+++ b/arch/powerpc/platforms/pasemi/gpio_mdio.c
@@ -260,7 +260,7 @@ out:
 }
 
 
-static int gpio_mdio_remove(struct platform_device *dev)
+static void gpio_mdio_remove(struct platform_device *dev)
 {
        struct mii_bus *bus = dev_get_drvdata(&dev->dev);
 
@@ -271,8 +271,6 @@ static int gpio_mdio_remove(struct platform_device *dev)
        kfree(bus->priv);
        bus->priv = NULL;
        mdiobus_free(bus);
-
-       return 0;
 }
 
 static const struct of_device_id gpio_mdio_match[] =
@@ -287,7 +285,7 @@ MODULE_DEVICE_TABLE(of, gpio_mdio_match);
 static struct platform_driver gpio_mdio_driver =
 {
        .probe          = gpio_mdio_probe,
-       .remove         = gpio_mdio_remove,
+       .remove_new     = gpio_mdio_remove,
        .driver = {
                .name = "gpio-mdio-bitbang",
                .of_match_table = gpio_mdio_match,