linux-kernel - [PATCH] net: mv643xx_eth: undo some opreations in mv643xx_eth

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Message-Id: <20220315023019.2118163-1-chi.minghao@zte.com.cn>
Date:   Tue, 15 Mar 2022 02:30:19 +0000
From:   cgel.zte@...il.com
To:     kuba@...nel.org
Cc:     sebastian.hesselbarth@...il.com, davem@...emloft.net,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Minghao Chi <chi.minghao@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: [PATCH] net: mv643xx_eth: undo some opreations in mv643xx_eth_probe

From: Minghao Chi <chi.minghao@....com.cn>

Cannot directly return platform_get_irq return irq, there
are operations that need to be undone.

Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: Minghao Chi <chi.minghao@....com.cn>
---
 drivers/net/ethernet/marvell/mv643xx_eth.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/mv643xx_eth.c b/drivers/net/ethernet/marvell/mv643xx_eth.c
index e6cd4e214d79..6cd81737786e 100644
--- a/drivers/net/ethernet/marvell/mv643xx_eth.c
+++ b/drivers/net/ethernet/marvell/mv643xx_eth.c
@@ -3189,8 +3189,11 @@ static int mv643xx_eth_probe(struct platform_device *pdev)
 
 
 	irq = platform_get_irq(pdev, 0);
-	if (WARN_ON(irq < 0))
+	if (WARN_ON(irq < 0)) {
+		clk_disable_unprepare(mp->clk);
+		free_netdev(dev);
 		return irq;
+	}
 	dev->irq = irq;
 
 	dev->netdev_ops = &mv643xx_eth_netdev_ops;
-- 
2.25.1