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From:   Andy Shevchenko <andy.shevchenko@gmail.com>
Date:   Wed, 27 Jul 2022 19:00:21 +0200
Message-ID: <CAHp75Vfn+tfuzxU31kVxp3sMAoT=ve3tcfDv84Omm-1tqvW3+w@mail.gmail.com>
Subject: Re: [net-next: PATCH v3 6/8] net: core: switch to fwnode_find_net_device_by_node()
To:     Marcin Wojtas <mw@semihalf.com>
Cc:     Vladimir Oltean <olteanv@gmail.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
        netdev <netdev@vger.kernel.org>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Sean Wang <sean.wang@mediatek.com>,
        Landen Chao <Landen.Chao@mediatek.com>,
        Linus Walleij <linus.walleij@linaro.org>,
        Andrew Lunn <andrew@lunn.ch>,
        Vivien Didelot <vivien.didelot@gmail.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Russell King - ARM Linux <linux@armlinux.org.uk>,
        Heiner Kallweit <hkallweit1@gmail.com>,
        Grzegorz Bernacki <gjb@semihalf.com>,
        Grzegorz Jaszczyk <jaz@semihalf.com>,
        Tomasz Nowicki <tn@semihalf.com>,
        Samer El-Haj-Mahmoud <Samer.El-Haj-Mahmoud@arm.com>,
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On Wed, Jul 27, 2022 at 5:24 PM Marcin Wojtas <mw@semihalf.com> wrote:
> =C5=9Br., 27 lip 2022 o 16:31 Vladimir Oltean <olteanv@gmail.com> napisa=
=C5=82(a):
> > On Wed, Jul 27, 2022 at 08:43:19AM +0200, Marcin Wojtas wrote:

...

> > > +     dev =3D class_find_device(&net_class, NULL, fwnode, fwnode_find=
_parent_dev_match);
> >
> > This needs to maintain compatibility with DSA masters that have
> > dev->of_node but don't have dev->fwnode populated.
>
> Do you mean a situation analogous to what I addressed in:
> [net-next: PATCH v3 4/8] net: mvpp2: initialize port fwnode pointer
> ?
>
> I found indeed a couple of drivers that may require a similar change
> (e.g. dpaa2).
>
> IMO we have 2 options:
> - update these drivers

Not Vladimir here, but my 2cents that update is best and elegant, it
can be done even before this series.

--=20
With Best Regards,
Andy Shevchenko