linux-kernel - Re: [PATCH net v2 2/2] net: stmmac: move fixed-link support fixup code

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Message-ID: <166f45dc-c27e-41fd-aa82-bad696f32184@lunn.ch>
Date:   Fri, 17 Mar 2023 21:02:42 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Michael Sit Wei Hong <michael.wei.hong.sit@...el.com>
Cc:     Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Ong Boon Leong <boon.leong.ong@...el.com>,
        netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Looi Hong Aun <hong.aun.looi@...el.com>,
        Voon Weifeng <weifeng.voon@...el.com>,
        Lai Peter Jun Ann <peter.jun.ann.lai@...el.com>
Subject: Re: [PATCH net v2 2/2] net: stmmac: move fixed-link support fixup
 code

On Tue, Mar 14, 2023 at 03:02:08PM +0800, Michael Sit Wei Hong wrote:
> xpcs_an_inband value is updated in the speed_mode_2500 function
> which turns on the xpcs_an_inband mode.
> 
> Moving the fixed-link fixup code to right before phylink setup to
> ensure no more fixup will affect the fixed-link mode configurations.

Please could you explain why this is correct, when you could simple
not set priv->plat->mdio_bus_data->xpcs_an_inband = true;
in intel_speed_mode_2500()?

This all seems like hacks, rather than a clean design.

     Andrew