net: gianfar: 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.

Reviewed-by: Michal Kubiak <michal.kubiak@intel.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230710071946.3470249-8-u.kleine-koenig@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
index 38d5013..0c898f9 100644 (file)
--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -3364,7 +3364,7 @@ register_fail:
        return err;
 }
 
-static int gfar_remove(struct platform_device *ofdev)
+static void gfar_remove(struct platform_device *ofdev)
 {
        struct gfar_private *priv = platform_get_drvdata(ofdev);
        struct device_node *np = ofdev->dev.of_node;
@@ -3381,8 +3381,6 @@ static int gfar_remove(struct platform_device *ofdev)
        gfar_free_rx_queues(priv);
        gfar_free_tx_queues(priv);
        free_gfar_dev(priv);
-
-       return 0;
 }
 
 #ifdef CONFIG_PM
@@ -3642,7 +3640,7 @@ static struct platform_driver gfar_driver = {
                .of_match_table = gfar_match,
        },
        .probe = gfar_probe,
-       .remove = gfar_remove,
+       .remove_new = gfar_remove,
 };
 
 module_platform_driver(gfar_driver);