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Message-ID: <20230207105613.4f56b445@kernel.org>
Date:   Tue, 7 Feb 2023 10:56:13 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     arinc9.unal@...il.com
Cc:     Felix Fietkau <nbd@....name>, John Crispin <john@...ozen.org>,
        Sean Wang <sean.wang@...iatek.com>,
        Mark Lee <Mark-MC.Lee@...iatek.com>,
        Lorenzo Bianconi <lorenzo@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Arınç ÜNAL 
        <arinc.unal@...nc9.com>,
        Richard van Schagen <richard@...terhints.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, erkin.bozoglu@...ont.com
Subject: Re: [PATCH net] net: ethernet: mtk_eth_soc: enable special tag when
 any MAC uses DSA

On Sun,  5 Feb 2023 20:53:31 +0300 arinc9.unal@...il.com wrote:
> From: Arınç ÜNAL <arinc.unal@...nc9.com>
> 
> The special tag is only enabled when the first MAC uses DSA. However, it
> must be enabled when any MAC uses DSA. Change the check accordingly.
> 
> This fixes hardware DSA untagging not working on the second MAC of the
> MT7621 and MT7623 SoCs, and likely other SoCs too. Therefore, remove the
> check that disables hardware DSA untagging for the second MAC of the MT7621
> and MT7623 SoCs.
> 
> Fixes: a1f47752fd62 ("net: ethernet: mtk_eth_soc: disable hardware DSA untagging for second MAC")

As Paolo pointed out to me off-list this is pretty much a revert of
commit under Fixes. Is this an actual regression fix, or second MAC
as DSA port never worked but now you found a way to make it work?

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