netdev - [PATCH net-next 8/9] net: gianfar: Convert to platform remove callback returning void

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Message-Id: <20230313103653.2753139-9-u.kleine-koenig@pengutronix.de>
Date:   Mon, 13 Mar 2023 11:36:52 +0100
From:   Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
To:     Claudiu Manoil <claudiu.manoil@....com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     netdev@...r.kernel.org, kernel@...gutronix.de
Subject: [PATCH net-next 8/9] 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.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
---
 drivers/net/ethernet/freescale/gianfar.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
index b2def295523a..2f578ad7788d 100644
--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -3364,7 +3364,7 @@ static int gfar_probe(struct platform_device *ofdev)
 	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);
-- 
2.39.1