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net: stmmac: dwmac-nuvoton: fix NULL pointer dereference in nvt_set_phy_intf_sel()

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priv->dev was never initialized after devm_kzalloc() allocates the
private data structure. When nvt_set_phy_intf_sel() is later invoked
via the phylink interface_select callback, it calls
nvt_gmac_get_delay(priv->dev, ...) which dereferences the NULL pointer.

Fix this by assigning priv->dev = dev immediately after allocation.

Fixes: 4d7c557f58 ("net: stmmac: dwmac-nuvoton: Add dwmac glue for Nuvoton MA35 family")
Signed-off-by: Joey Lu <a0987203069@gmail.com>
Link: https://patch.msgid.link/20260506084614.192894-2-a0987203069@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Joey Lu
2026-05-06 16:46:13 +08:00
committed by Jakub Kicinski
parent ecddc523cf
commit dedf6c9038
1 changed files with 2 additions and 0 deletions
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2
drivers/net/ethernet/stmicro/stmmac/dwmac-nuvoton.c
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@@ -100,6 +100,8 @@ static int nvt_gmac_probe(struct platform_device *pdev)
if (!priv)
return dev_err_probe(dev, -ENOMEM, "Failed to allocate private data\n");
priv->dev = dev;
priv->regmap = syscon_regmap_lookup_by_phandle_args(dev->of_node, "nuvoton,sys",
1, &priv->macid);
if (IS_ERR(priv->regmap))