netdev - Re: [PATCH net-next v2 1/1] net: dsa: fix fixed-link port registration

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Date:   Sun, 11 Aug 2019 13:35:20 +0200
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Marek Behún <marek.behun@....cz>
Cc:     Andrew Lunn <andrew@...n.ch>, netdev@...r.kernel.org,
        Sebastian Reichel <sebastian.reichel@...labora.co.uk>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S . Miller" <davem@...emloft.net>
Subject: Re: [PATCH net-next v2 1/1] net: dsa: fix fixed-link port
 registration

On 11.08.2019 05:39, Andrew Lunn wrote:
> On Sun, Aug 11, 2019 at 05:18:57AM +0200, Marek Behún wrote:
>> Commit 88d6272acaaa ("net: phy: avoid unneeded MDIO reads in
>> genphy_read_status") broke fixed link DSA port registration in
>> dsa_port_fixed_link_register_of: the genphy_read_status does not do what
>> it is supposed to and the following adjust_link is given wrong
>> parameters.
> 
> Hi Marek
> 
> Which parameters are incorrect?
> 
> In fixed_phy.c, __fixed_phy_register() there is:
> 
>         /* propagate the fixed link values to struct phy_device */
>         phy->link = status->link;
>         if (status->link) {
>                 phy->speed = status->speed;
>                 phy->duplex = status->duplex;
>                 phy->pause = status->pause;
>                 phy->asym_pause = status->asym_pause;
>         }
> 
> Are we not initialising something? Or is the initialisation done here
> getting reset sometime afterwards?
> 
In addition to Andrew's question:
We talk about this DT config: armada-385-turris-omnia.dts ?
Which kernel version are you using?

> Thanks
> 	Andrew
> 
Heiner