linux-kernel - Re: Re: [PATCH] net: ethernet: mediatek: fix warning in phy_start

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Date:   Tue, 8 Jan 2019 11:29:14 -0800
From:   Sean Wang <sean.wang@...nel.org>
To:     Frank Wunderlich <frank-w@...lic-files.de>
Cc:     Heiner Kallweit <hkallweit1@...il.com>,
        Felix Fietkau <nbd@...nwrt.org>,
        John Crispin <john@...ozen.org>,
        Nelson Chang <nelson.chang@...iatek.com>,
        "David S. Miller" <davem@...emloft.net>,
        Matthias Brugger <matthias.bgg@...il.com>,
        netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: Re: [PATCH] net: ethernet: mediatek: fix warning in phy_start_aneg

On Tue, Jan 8, 2019 at 11:07 AM Frank Wunderlich
<frank-w@...lic-files.de> wrote:
>
>
> > In mtk_phy_connect() I would say this complete block can be removed.
> > All this is handled internally by phylib.
> >
> >       dev->phydev->autoneg = AUTONEG_ENABLE;
> >       dev->phydev->speed = 0;
> >       dev->phydev->duplex = 0;
> >
> >       phy_set_max_speed(dev->phydev, SPEED_1000);
> >       phy_support_asym_pause(dev->phydev);
> >       linkmode_copy(dev->phydev->advertising, dev->phydev->supported);
> >       linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
> >                        dev->phydev->advertising);
> >       phy_start_aneg(dev->phydev);
> >
> > Could you please test this?
>
> seems to work well, no warning in dmesg
>
> traffic 940Mbit sending, 900 receive
>

The change to phy initialized valve determined by phylib looks good to
me and simplify the mac driver a lot. You could have it in v2.

> > And a further proposal:
> > Instead of the open-coded dev_info() in mtk_phy_connect_node()
> > you could use phy_attached_info().
>
> have not tried this yet...because it's only an info-message and needs different parameters...have to look how i can convert it

I think it can be done in a separate patch

>
> > Calling phy_start() in the ndo_open callback is fine, you can leave
> > it there.
>
> have it re-added
>
> pushed to my repo: https://github.com/frank-w/BPI-R2-4.14/commits/5.0-rc
>
> regards Frank