netdev - [PATCH net-next 05/54] net: ethernet: altera: Convert to platform remove callback returning void

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Message-Id: <20230918204227.1316886-6-u.kleine-koenig@pengutronix.de>
Date: Mon, 18 Sep 2023 22:41:37 +0200
From: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>
Cc: Joyce Ooi <joyce.ooi@...el.com>,
	netdev@...r.kernel.org,
	kernel@...gutronix.de
Subject: [PATCH net-next 05/54] net: ethernet: altera: 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() is 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@...gutronix.de>
---
 drivers/net/ethernet/altera/altera_tse_main.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/altera/altera_tse_main.c b/drivers/net/ethernet/altera/altera_tse_main.c
index 2e15800e5310..1b1799985d1d 100644
--- a/drivers/net/ethernet/altera/altera_tse_main.c
+++ b/drivers/net/ethernet/altera/altera_tse_main.c
@@ -1464,7 +1464,7 @@ static int altera_tse_probe(struct platform_device *pdev)
 
 /* Remove Altera TSE MAC device
  */
-static int altera_tse_remove(struct platform_device *pdev)
+static void altera_tse_remove(struct platform_device *pdev)
 {
 	struct net_device *ndev = platform_get_drvdata(pdev);
 	struct altera_tse_private *priv = netdev_priv(ndev);
@@ -1476,8 +1476,6 @@ static int altera_tse_remove(struct platform_device *pdev)
 	lynx_pcs_destroy(priv->pcs);
 
 	free_netdev(ndev);
-
-	return 0;
 }
 
 static const struct altera_dmaops altera_dtype_sgdma = {
@@ -1528,7 +1526,7 @@ MODULE_DEVICE_TABLE(of, altera_tse_ids);
 
 static struct platform_driver altera_tse_driver = {
 	.probe		= altera_tse_probe,
-	.remove		= altera_tse_remove,
+	.remove_new	= altera_tse_remove,
 	.suspend	= NULL,
 	.resume		= NULL,
 	.driver		= {
-- 
2.40.1