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Date:   Sat, 10 Jun 2023 20:55:53 +0300
From:   Vladimir Oltean <olteanv@gmail.com>
To:     =?utf-8?B?QXLEsW7DpyDDnE5BTA==?= <arinc.unal@arinc9.com>
Cc:     "Russell King (Oracle)" <linux@armlinux.org.uk>,
        Sean Wang <sean.wang@mediatek.com>,
        Landen Chao <Landen.Chao@mediatek.com>,
        DENG Qingfang <dqfext@gmail.com>,
        Daniel Golle <daniel@makrotopia.org>,
        Andrew Lunn <andrew@lunn.ch>,
        Florian Fainelli <f.fainelli@gmail.com>,
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        Jakub Kicinski <kuba@kernel.org>,
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        <angelogioacchino.delregno@collabora.com>,
        Richard van Schagen <richard@routerhints.com>,
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        linux-mediatek@lists.infradead.org
Subject: Re: [PATCH net-next 08/30] net: dsa: mt7530: change p{5,6}_interface
 to p{5,6}_configured
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On Sat, Jun 10, 2023 at 01:57:27PM +0300, Arınç ÜNAL wrote:
> I was able to confirm all user ports of the MT7531BE switch transmit/receive
> traffic to/from the SGMII CPU port and computer fine after getting rid of
> priv->info->cpu_port_config().
> 
> Tried all user ports being affine to the RGMII CPU port, that works too.
> 
> https://github.com/arinc9/linux/commit/4e79313a95d45950cab526456ef0030286ba4d4e

Did you do black-box testing after removing the code, or were you
also able to independently confirm that the configurations done by
cpu_port_config() were later overwritten? I'm trying to disambiguate
between "works by coincidence" and "works because the analysis was
correct".