netdev - Re: [net-next PATCH v3 3/5] net: phy: introduce phy_find_by

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Message-ID: <20200708185837.GJ928075@lunn.ch>
Date:   Wed, 8 Jul 2020 20:58:37 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Calvin Johnson <calvin.johnson@....nxp.com>
Cc:     Jeremy Linton <jeremy.linton@....com>,
        Russell King - ARM Linux admin <linux@...linux.org.uk>,
        Jon <jon@...id-run.com>,
        Cristi Sovaiala <cristian.sovaiala@....com>,
        Ioana Ciornei <ioana.ciornei@....com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Madalin Bucur <madalin.bucur@....nxp.com>, linux.cj@...il.com,
        linux-acpi@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [net-next PATCH v3 3/5] net: phy: introduce phy_find_by_fwnode()

> +/**
> + * fwnode_mdio_find_bus - Given an mii_bus fwnode, find the mii_bus.
> + * @mdio_bus_fwnode: fwnode of the mii_bus.
> + *
> + * Returns a reference to the mii_bus, or NULL if none found.  The
> + * embedded struct device will have its reference count incremented,
> + * and this must be put once the bus is finished with.

> +struct phy_device *phy_find_by_fwnode(struct fwnode_handle *fwnode)
> +{
> +	struct fwnode_handle *fwnode_mdio;
> +	struct mii_bus *mdio;
> +	int addr;
> +	int err;
> +
> +	fwnode_mdio = fwnode_find_reference(fwnode, "mdio-handle", 0);
> +	mdio = fwnode_mdio_find_bus(fwnode_mdio);

You don't seem to release the reference on the device anywhere. Is
that a problem?

     Andrew