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SubjectRe: of_mdio: Checking build dependencies
On Fri, Mar 12, 2021 at 1:26 AM Andrew Lunn <andrew@lunn.ch> wrote:
>
> 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


modules.order may include both
drivers/of/of_mdio.ko and
drivers/net/mdio/of_mdio.c

But, I do not know how this could happen.

I checked out 14b26b127c098bba^,
and built modules with CONFIG_OF_MDIO=m.
Then, I checked out 14b26b127c098bba
and rebuilt.

I did not see such an error.

I also checked the Kbuild code,
and it looks good too.

Please let me know if you find steps
to reproduce it.

--
Best Regards
Masahiro Yamada

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