linux-kernel - [PATCH] xgene-v2: Fix a resource leak in the error handling path of 'xge

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Message-Id: <ea7a73e68cd33652850b5392303b417693575dc4.1629531259.git.christophe.jaillet@wanadoo.fr>
Date:   Sat, 21 Aug 2021 09:35:23 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     iyappan@...amperecomputing.com, keyur@...amperecomputing.com,
        davem@...emloft.net, kuba@...nel.org
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] xgene-v2: Fix a resource leak in the error handling path of 'xge_probe()'

A successful 'xge_mdio_config()' call should be balanced by a corresponding
'xge_mdio_remove()' call in the error handling path of the probe, as
already done in the remove function.

Update the error handling path accordingly.

Fixes: ea8ab16ab225 ("drivers: net: xgene-v2: Add MDIO support")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/net/ethernet/apm/xgene-v2/main.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/apm/xgene-v2/main.c b/drivers/net/ethernet/apm/xgene-v2/main.c
index 860c18fb7aae..80399c8980bd 100644
--- a/drivers/net/ethernet/apm/xgene-v2/main.c
+++ b/drivers/net/ethernet/apm/xgene-v2/main.c
@@ -677,11 +677,13 @@ static int xge_probe(struct platform_device *pdev)
 	ret = register_netdev(ndev);
 	if (ret) {
 		netdev_err(ndev, "Failed to register netdev\n");
-		goto err;
+		goto err_mdio_remove;
 	}
 
 	return 0;
 
+err_mdio_remove:
+	xge_mdio_remove(ndev);
 err:
 	free_netdev(ndev);
 
-- 
2.30.2