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net: dsa: lantiq_gswip: ignore MDIO buses disabled in OF

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If the "lantiq,xrx200-mdio" child has status = "disabled", the MDIO bus
creation should be avoided. Use of_device_is_available() to check for
that, and take advantage of 2 facts:

- of_device_is_available(NULL) returns false
- of_node_put(NULL) is a no-op

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Alvin Šipraga <alsi@bang-olufsen.dk>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vladimir Oltean 2024-01-04 16:00:30 +02:00 committed by David S. Miller
parent cd4ba3ecce
commit 7a89853939
1 changed files with 3 additions and 3 deletions
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6
drivers/net/dsa/lantiq_gswip.c
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@ -510,11 +510,11 @@ static int gswip_mdio(struct gswip_priv *priv)
struct device_node *mdio_np, *switch_np = priv->dev->of_node;
struct device *dev = priv->dev;
struct mii_bus *bus;
int err;
int err = 0;
mdio_np = of_get_compatible_child(switch_np, "lantiq,xrx200-mdio");
if (!mdio_np)
return 0;
if (!of_device_is_available(mdio_np))
goto out_put_node;
bus = devm_mdiobus_alloc(dev);
if (!bus) {