Subject: Re: [PATCHv3 2/3] net: socionext: Add Synquacer NetSec driver

From: Andrew Lunn <[email-masked]>
Date: Thu, 21 Dec 2017 15:00:46 +0100

> +static int netsec_register_mdio(struct netsec_priv *priv, u32 phy_addr)
> +{
> +	struct mii_bus *bus;
> +	int ret;
> +
> +	bus = devm_mdiobus_alloc(priv->dev);
> +	if (!bus)
> +		return -ENOMEM;
> +
> +	snprintf(bus->id, MII_BUS_ID_SIZE, "%s", dev_name(priv->dev));
> +	bus->priv = priv;
> +	bus->name = "SNI NETSEC MDIO";
> +	bus->read = netsec_phy_read;
> +	bus->write = netsec_phy_write;
> +	bus->parent = priv->dev;
> +	priv->mii_bus = bus;
> +
> +	if (dev_of_node(priv->dev)) {
> +		struct device_node *parent = dev_of_node(priv->dev);
> +		struct device_node *child_node, *mdio_node = NULL;
> +
> +		for_each_child_of_node(parent, child_node) {
> +			if (of_device_is_compatible(child_node,
> +						    "socionext,snq-mdio")) {

Just use of_get_child_by_name(parent, "mdio");

     Andrew
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