netdev - Re: [PATCH net] net: phylink: fix link state on phy-connect

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Date:   Tue, 28 Nov 2017 15:10:01 +0100
From:   Antoine Tenart <antoine.tenart@...e-electrons.com>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Antoine Tenart <antoine.tenart@...e-electrons.com>,
        rmk@...linux.org.uk, f.fainelli@...il.com, davem@...emloft.net,
        Yan Markman <ymarkman@...vell.com>,
        gregory.clement@...e-electrons.com,
        thomas.petazzoni@...e-electrons.com,
        miquel.raynal@...e-electrons.com, nadavh@...vell.com,
        mw@...ihalf.com, stefanc@...vell.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net] net: phylink: fix link state on phy-connect

Hi Andrew,

On Tue, Nov 28, 2017 at 02:56:10PM +0100, Andrew Lunn wrote:
> > +	/* On _disconnect, the phy state machine and phylink resolve
> > +	 * are stopped before executing full gracefull down/reset state.
> > +	 * The further _connect starts with incorrect init state. Let's set
> > +	 * init values here.
> > +	 */
> > +	pl->phy_state.link = false;
> > +	pl->link_config.pause = MLO_PAUSE_AN;
> > +	pl->link_config.speed = SPEED_UNKNOWN;
> > +	pl->link_config.duplex = DUPLEX_UNKNOWN;
> 
> Looks sensible. My only comment would be, maybe it makes sense to
> reduce the duplication by adding a little helper which is called here,
> and in phylink_create()?

Yes, it could be better to have a little helper to reset the link config
and state values and avoid duplication.

I'll wait for more comments before sending a v2 though. Maybe Russell
will have good suggestions to do this the good way.

Thanks!
Antoine

-- 
Antoine Ténart, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com