Commit dedf6c90386d for kernel

commit dedf6c90386d99b878763c183a08b61d3ce4824e
Author: Joey Lu <a0987203069@gmail.com>
Date:   Wed May 6 16:46:13 2026 +0800

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

    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: 4d7c557f58ef ("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>

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-nuvoton.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-nuvoton.c
index e2240b68ad98..2ab6ecac6422 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-nuvoton.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-nuvoton.c
@@ -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))