linux-kernel - Re: [PATCH] arm64: dts: mt7622: fix switch probe on bananapi-r64

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Message-ID: <cebb10b8-b0bf-4cb7-bba4-c3f941ba2b82@leemhuis.info>
Date: Mon, 1 Jul 2024 08:16:33 +0200
From: "Linux regression tracking (Thorsten Leemhuis)"
 <regressions@...mhuis.info>
To: Paolo Abeni <pabeni@...hat.com>, "David S. Miller" <davem@...emloft.net>,
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
 Jakub Kicinski <kuba@...nel.org>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org,
 Daniel Golle <daniel@...rotopia.org>, frank-w@...lic-files.de,
 Frank Wunderlich <linux@...web.de>, Arınç ÜNAL
 <arinc.unal@...nc9.com>, Rob Herring <robh@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Krzysztof Kozlowski
 <krzk+dt@...nel.org>, Matthias Brugger <matthias.bgg@...il.com>,
 Linux regressions mailing list <regressions@...ts.linux.dev>
Subject: Re: [PATCH] arm64: dts: mt7622: fix switch probe on bananapi-r64

[CCing the other net maintainers]

On 25.06.24 10:51, AngeloGioacchino Del Regno wrote:
> Il 25/06/24 07:56, Linux regression tracking (Thorsten Leemhuis) ha
> scritto:
>> On 17.06.24 13:08, Arınç ÜNAL wrote:
>>> On 17/06/2024 11:33, Linux regression tracking (Thorsten Leemhuis)
>>> wrote:
>>> [...]
>> It looks more and more like we are stuck here (or was there progress and
>> I just missed it?) while the 6.10 final is slowly getting closer. Hence:
>>
>> AngeloGioacchino, should we ask the net maintainers to revert
>> 868ff5f4944aa9 ("net: dsa: mt7530-mdio: read PHY address of switch from
>> device tree") for now to resolve this regression? Reminder, there is
>> nothing wrong with that commit per se afaik, it just exposes a problem
>> that needs to be fixed first before it can be reapplied.
> 
> To be clear on this: I asked for the commit to be fixed such that it
> guarantees
> backwards compatibility with older device trees.
> 
> If no fix comes,

I haven't see any since that mail, did you? If not, I think...

> then I guess that we should ask them to revert this commit
> until a fix is available.

...it's time to ask them for the revert to resolve this for -rc7 (and
avoid a last minute revert), or what do you think?

> I don't like this situation, either, btw.

I guess none of us does. :-/

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
--
Everything you wanna know about Linux kernel regression tracking:
https://linux-regtracking.leemhuis.info/about/#tldr
If I did something stupid, please tell me, as explained on that page.

#regzbot poke