netdev - Re: of_mdio: Checking build dependencies

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Message-ID: <YEpEuoRGh0KoWoGa@lunn.ch>
Date:   Thu, 11 Mar 2021 17:26:34 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Markus Elfring <Markus.Elfring@....de>
Cc:     stable@...r.kernel.org, netdev@...r.kernel.org,
        Calvin Johnson <calvin.johnson@....nxp.com>,
        "David S. Miller" <davem@...emloft.net>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Ioana Ciornei <ioana.ciornei@....com>,
        Jakub Kicinski <kuba@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org,
        Masahiro Yamada <masahiroy@...nel.org>
Subject: Re: of_mdio: Checking build dependencies

On Wed, Mar 10, 2021 at 09:31:07PM +0100, Markus Elfring wrote:
> Hello,
> 
> I would like to build the Linux version “5.11.5” for my needs.
> But I stumbled on the following information.
> 
> …
>   AR      drivers/built-in.a
>   LD [M]  drivers/visorbus/visorbus.o
>   GEN     .version
>   CHK     include/generated/compile.h
> error: the following would cause module name conflict:
>   drivers/net/mdio/of_mdio.ko
>   drivers/of/of_mdio.ko

Hi Markus

Something wrong here. There should not be any of_mdio.ko in
drivers/of. That was the whole point of the patch you referenced, it
moved this file to drivers/net/mdio/. Please check where your
drivers/of/of_mdio.ko comes from. Has there been a bad merge conflict
resolution? Or is it left over from an older build?

   Andrew