netdev - Re: [PATCH net-next] net: dsa: realtek: make interface drivers depend on OF

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Date:   Wed, 23 Mar 2022 13:48:56 +0000
From:   Alvin Šipraga <ALSI@...g-olufsen.dk>
To:     Andrew Lunn <andrew@...n.ch>
CC:     Alvin Šipraga <alvin@...s.dk>,
        Linus Walleij <linus.walleij@...aro.org>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next] net: dsa: realtek: make interface drivers depend
 on OF

Hi Andrew,

On Wed, Mar 23, 2022 at 01:57:57PM +0100, Andrew Lunn wrote:
> On Wed, Mar 23, 2022 at 01:42:25PM +0100, Alvin Šipraga wrote:
> > From: Alvin Šipraga <alsi@...g-olufsen.dk>
> > 
> > The kernel test robot reported build warnings with a randconfig that
> > built realtek-{smi,mdio} without CONFIG_OF set. Since both interface
> > drivers are using OF and will not probe without, add the corresponding
> > dependency to Kconfig.
> > 
> > Link: https://lore.kernel.org/all/202203231233.Xx73Y40o-lkp@intel.com/
> > Link: https://lore.kernel.org/all/202203231439.ycl0jg50-lkp@intel.com/
> > Signed-off-by: Alvin Šipraga <alsi@...g-olufsen.dk>
> 
> Hi Alvin
> 
> This looks like something which could go into net, not net-next. Could
> you add a Fixes: tag.

The driver has been split in net-next and deviates significantly from
what is in net. I can send a patch to net as well, but that will not
cover net-next.

View from net:

    drivers/net/dsa/Kconfig:
    ...
    config NET_DSA_REALTEK_SMI
    ...

View from net-next:

    drivers/net/dsa/Kconfig:
    ...
    source "drivers/net/dsa/realtek/Kconfig"
    ...

    drivers/net/dsa/realtek/Kconfig:
    menuconfig NET_DSA_REALTEK
        ...
    config NET_DSA_REALTEK_MDIO
        ...
    config NET_DSA_REALTEK_SMI
        ...

I am not well-versed in the procedures here, but since 5.17 has now been
released, isn't it more important to fix 5.18, which will soon have the
net-next branch merged in? Hence the patch should target net-next?

As for 5.17 and the old (net) structure, I can send a separate patch to
net. Does that sound OK?

Once that is clarified I can re-send with a Fixes: tag.

Thanks for your help.

Kind regards,
Alvin


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