netdev - Re: [PATCH net] net: dsa: microchip: Don't try to read stats for unused ports

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Date:   Wed, 12 Jun 2019 23:08:50 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Robert Hancock <hancock@...systems.ca>
Cc:     netdev@...r.kernel.org, woojung.huh@...rochip.com,
        UNGLinuxDriver@...rochip.com, vivien.didelot@...il.com,
        f.fainelli@...il.com
Subject: Re: [PATCH net] net: dsa: microchip: Don't try to read stats for
 unused ports

On Wed, Jun 12, 2019 at 02:33:32PM -0600, Robert Hancock wrote:
> If some of the switch ports were not listed in the device tree, due to
> being unused, the ksz_mib_read_work function ended up accessing a NULL
> dp->slave pointer and causing an oops. Skip checking statistics for any
> unused ports.
> 
> Fixes: 7c6ff470aa867f53 ("net: dsa: microchip: add MIB counter reading
> support")
> Signed-off-by: Robert Hancock <hancock@...systems.ca>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew