linux-kernel - Re: [PATCH net v2 2/7] net: dsa: mt7530: fix trapping frames with multiple CPU ports on MT7530

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Message-ID: <20230613173908.iuofbuvkanwyr7as@skbuf>
Date:   Tue, 13 Jun 2023 20:39:08 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     Arınç ÜNAL <arinc.unal@...nc9.com>
Cc:     Daniel Golle <daniel@...rotopia.org>,
        Landen Chao <Landen.Chao@...iatek.com>,
        DENG Qingfang <dqfext@...il.com>,
        Sean Wang <sean.wang@...iatek.com>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Russell King <linux@...linux.org.uk>,
        Frank Wunderlich <frank-w@...lic-files.de>,
        Bartel Eerdekens <bartel.eerdekens@...stell8.be>,
        mithat.guner@...ont.com, erkin.bozoglu@...ont.com,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH net v2 2/7] net: dsa: mt7530: fix trapping frames with
 multiple CPU ports on MT7530

On Tue, Jun 13, 2023 at 08:30:28PM +0300, Arınç ÜNAL wrote:
> That fixes port 5 on certain variants of the MT7530 switch, as it was
> already working on the other variants, which, in conclusion, fixes port 5 on
> all MT7530 variants.

Ok. I didn't pay enough attention to the commit message.

> And no, trapping works. Having only CPU port 5 defined on the devicetree
> will cause the CPU_PORT bits to be set to port 5. There's only a problem
> when multiple CPU ports are defined.

Got it. Then this is really not a problem, and the commit message frames
it incorrectly.

> > So how about settling on that as a more modest Fixes: tag, and
> > explaining clearly in the commit message what's affected?
> 
> I don't see anything to change in the patch log except addressing Russell's
> comments.

Ok. I see Russell has commented on v4, though I don't see that he particularly
pointed out that this fixes a problem which isn't yet a problem. I got lost in
all the versions. v2 and v3 are out of my inbox now :)