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Date:   Sun, 13 Mar 2022 16:11:04 +0100
From:   Andrew Lunn <>
To:     Michael Walle <>
Cc:     Heiner Kallweit <>,
        Russell King <>,
        "David S . Miller" <>,
        Jakub Kicinski <>,
        Colin Foster <>,,
Subject: Re: [PATCH net] net: mdio: mscc-miim: fix duplicate debugfs entry

On Sat, Mar 12, 2022 at 11:41:40PM +0100, Michael Walle wrote:
> This driver can have up to two regmaps. If the second one is registered
> its debugfs entry will have the same name as the first one and the
> following error will be printed:
> [    3.833521] debugfs: Directory 'e200413c.mdio' with parent 'regmap' already present!
> Give the second regmap a name to avoid this.
> Fixes: a27a76282837 ("net: mdio: mscc-miim: convert to a regmap implementation")
> Signed-off-by: Michael Walle <>

Reviewed-by: Andrew Lunn <>


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