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net: ethernet: rtsn: Fix a null pointer dereference in rtsn_probe()

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Add check for the return value of rcar_gen4_ptp_alloc()
to prevent potential null pointer dereference.

Fixes: b0d3969d2b ("net: ethernet: rtsn: Add support for Renesas Ethernet-TSN")
Cc: stable@vger.kernel.org
Signed-off-by: Haoxiang Li <haoxiang_li2024@163.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://patch.msgid.link/20250703100109.2541018-1-haoxiang_li2024@163.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Haoxiang Li 2025-07-03 18:01:09 +08:00 committed by Jakub Kicinski
parent 462da827c6
commit 95a234f6af
1 changed files with 5 additions and 0 deletions
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5
drivers/net/ethernet/renesas/rtsn.c
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@ -1259,7 +1259,12 @@ static int rtsn_probe(struct platform_device *pdev)
priv = netdev_priv(ndev);
priv->pdev = pdev;
priv->ndev = ndev;
priv->ptp_priv = rcar_gen4_ptp_alloc(pdev);
if (!priv->ptp_priv) {
ret = -ENOMEM;
goto error_free;
}
spin_lock_init(&priv->lock);
platform_set_drvdata(pdev, priv);