netdev - Re: [PATCH net-next 05/15] net: dsa: mt7530: improve code path for setting up port 5

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Message-ID: <968d0374-2584-42dd-9ec4-c30fb01c5202@arinc9.com>
Date: Sun, 17 Dec 2023 15:01:02 +0300
From: Arınç ÜNAL <arinc.unal@...nc9.com>
To: Vladimir Oltean <olteanv@...il.com>
Cc: "Russell King (Oracle)" <linux@...linux.org.uk>,
 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>,
 netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org,
 Frank Wunderlich <frank-w@...lic-files.de>,
 Bartel Eerdekens <bartel.eerdekens@...stell8.be>, mithat.guner@...ont.com,
 erkin.bozoglu@...ont.com
Subject: Re: [PATCH net-next 05/15] net: dsa: mt7530: improve code path for
 setting up port 5

On 7.12.2023 21:03, Vladimir Oltean wrote:
> On Sat, Dec 02, 2023 at 11:36:03AM +0300, Arınç ÜNAL wrote:
>> On 18.11.2023 17:41, Russell King (Oracle) wrote:
>>>> For the cases of PHY muxing or the port being disabled, call
>>>> mt7530_setup_port5() from mt7530_setup(). mt7530_setup_port5() from
>>>> mt753x_phylink_mac_config() won't run when port 5 is disabled or used for
>>>> PHY muxing as port 5 won't be defined on the devicetree.
>>>
>>> ... and this should state why this needs to happen - in other words,
>>> the commit message should state why is it critical that port 5 is
>>> always setup.
>>
>> Actually, port 5 must not always be setup. With patch 7, I explain this
>> while preventing mt7530_setup_port5() from running if port 5 is disabled.
>>
>> Arınç
> 
> Then change that last paragraph. You could say something like this:
> 
> To keep the cases where port 5 isn't controlled by phylink working as
> before, we need to preserve the mt7530_setup_port5() call from mt7530_setup().
> 
> I think it's a case of saying too much, which sparks too many unresolved
> questions in the reader's mind, which are irrelevant for the purpose of
> this specific change: eliminating the overlap between DSA's setup() time
> and phylink.

Will do, thanks.