From e87d3a1370ce9f04770d789bcf7cce44865d2e8d Mon Sep 17 00:00:00 2001 From: Yanteng Si Date: Mon, 11 Dec 2023 18:33:11 +0800 Subject: [PATCH] stmmac: dwmac-loongson: Make sure MDIO is initialized before use Generic code will use mdio. If it is not initialized before use, the kernel will Oops. Fixes: 30bba69d7db4 ("stmmac: pci: Add dwmac support for Loongson") Signed-off-by: Yanteng Si Signed-off-by: Feiyang Chen Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller --- .../net/ethernet/stmicro/stmmac/dwmac-loongson.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c index 2cd6fce5c993..e7701326adc6 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c @@ -68,17 +68,15 @@ static int loongson_dwmac_probe(struct pci_dev *pdev, const struct pci_device_id if (!plat) return -ENOMEM; + plat->mdio_bus_data = devm_kzalloc(&pdev->dev, + sizeof(*plat->mdio_bus_data), + GFP_KERNEL); + if (!plat->mdio_bus_data) + return -ENOMEM; + plat->mdio_node = of_get_child_by_name(np, "mdio"); if (plat->mdio_node) { dev_info(&pdev->dev, "Found MDIO subnode\n"); - - plat->mdio_bus_data = devm_kzalloc(&pdev->dev, - sizeof(*plat->mdio_bus_data), - GFP_KERNEL); - if (!plat->mdio_bus_data) { - ret = -ENOMEM; - goto err_put_node; - } plat->mdio_bus_data->needs_reset = true; }