netdev - Re: [PATCH net v2 1/2] net: stmmac: fix PHY handle parsing

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Date:   Fri, 17 Mar 2023 20:56:19 +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 1/2] net: stmmac: fix PHY handle parsing

On Tue, Mar 14, 2023 at 03:02:07PM +0800, Michael Sit Wei Hong wrote:
> phylink_fwnode_phy_connect returns 0 when set to MLO_AN_INBAND.
> This causes the PHY handle parsing to skip and the PHY will not be attached
> to the MAC.

Please could you expand the commit message because i'm having trouble
following this.

phylink_fwnode_phy_connect() says:

	/* Fixed links and 802.3z are handled without needing a PHY */
	if (pl->cfg_link_an_mode == MLO_AN_FIXED ||
	    (pl->cfg_link_an_mode == MLO_AN_INBAND &&
	     phy_interface_mode_is_8023z(pl->link_interface)))
		return 0;

So your first statement is not true. It should be MLO_AN_INBAND
and phy_interface_mode_is_8023z.

> Add additional check for PHY handle parsing when set to MLO_AN_INBAND.

Looking at the patch, there is no reference to MLO_AN_INBAND, or
managed = "in-band-status";

	Andrew