Patch "stmmac: dwmac-loongson: Make sure MDIO is initialized before use" has been added to the 6.1-stable tree

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This is a note to let you know that I've just added the patch titled

    stmmac: dwmac-loongson: Make sure MDIO is initialized before use

to the 6.1-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     stmmac-dwmac-loongson-make-sure-mdio-is-initialized-.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 61a783c75539205c58dd0fc00686eb08588484ba
Author: Yanteng Si <siyanteng@xxxxxxxxxxx>
Date:   Mon Dec 11 18:33:11 2023 +0800

    stmmac: dwmac-loongson: Make sure MDIO is initialized before use
    
    [ Upstream commit e87d3a1370ce9f04770d789bcf7cce44865d2e8d ]
    
    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 <siyanteng@xxxxxxxxxxx>
    Signed-off-by: Feiyang Chen <chenfeiyang@xxxxxxxxxxx>
    Reviewed-by: Andrew Lunn <andrew@xxxxxxx>
    Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
index a25c187d31853..49c7aa86faaa8 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;
 	}
 




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