netdev - [PATCH net-next 11/11] net: stmmac: dwmac-tegra: Convert to platform remove callback returning void

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Message-Id: <20230402143025.2524443-12-u.kleine-koenig@pengutronix.de>
Date:   Sun,  2 Apr 2023 16:30:25 +0200
From:   Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
To:     Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>
Cc:     netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-tegra@...r.kernel.org,
        kernel@...gutronix.de
Subject: [PATCH net-next 11/11] net: stmmac: dwmac-tegra: 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/stmicro/stmmac/dwmac-tegra.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c
index bdf990cf2f31..f8367c5b490b 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c
@@ -353,15 +353,13 @@ static int tegra_mgbe_probe(struct platform_device *pdev)
 	return err;
 }
 
-static int tegra_mgbe_remove(struct platform_device *pdev)
+static void tegra_mgbe_remove(struct platform_device *pdev)
 {
 	struct tegra_mgbe *mgbe = get_stmmac_bsp_priv(&pdev->dev);
 
 	clk_bulk_disable_unprepare(ARRAY_SIZE(mgbe_clks), mgbe->clks);
 
 	stmmac_pltfr_remove(pdev);
-
-	return 0;
 }
 
 static const struct of_device_id tegra_mgbe_match[] = {
@@ -374,7 +372,7 @@ static SIMPLE_DEV_PM_OPS(tegra_mgbe_pm_ops, tegra_mgbe_suspend, tegra_mgbe_resum
 
 static struct platform_driver tegra_mgbe_driver = {
 	.probe = tegra_mgbe_probe,
-	.remove = tegra_mgbe_remove,
+	.remove_new = tegra_mgbe_remove,
 	.driver = {
 		.name = "tegra-mgbe",
 		.pm		= &tegra_mgbe_pm_ops,
-- 
2.39.2