netdev - Re: [PATCH net] mdio: mux: fix parsing mux registers outside of the PHY address range

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Message-ID: <20170710143731.GE21118@lunn.ch>
Date:   Mon, 10 Jul 2017 16:37:31 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Jon Mason <jon.mason@...adcom.com>
Cc:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Network Development <netdev@...r.kernel.org>,
        David Miller <davem@...emloft.net>,
        linux-amlogic@...ts.infradead.org
Subject: Re: [PATCH net] mdio: mux: fix parsing mux registers outside of the
 PHY address range

> To be clear, are you suggesting that we add an additional property to
> of_mdio_parse_addr() that specifies the limit to check against, or
> remove the check and add it to each additional caller?

Hi Jon

Probably the simplest is to add an extra parameter to mdio_mux_init()
which is the maximum allowed reg value.

We should not touch of_mdio_parse_addr(). reg is not an mdio
address. It is a count of gpios, or a value to be poked into an
register.

      Andrew