linux-kernel - Re: [PATCH net-next V1] net: pcs: xpcs: Add 2500BASE-X case in get state for XPCS drivers

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Message-ID: <ZTo8EL7JhmqY56J0@HYD-DK-UNGSW21>
Date:   Thu, 26 Oct 2023 15:44:40 +0530
From:   Raju Lakkaraju <Raju.Lakkaraju@...rochip.com>
To:     "Russell King (Oracle)" <linux@...linux.org.uk>
CC:     <netdev@...r.kernel.org>, <davem@...emloft.net>, <kuba@...nel.org>,
        <linux-kernel@...r.kernel.org>, <andrew@...n.ch>,
        <Jose.Abreu@...opsys.com>, <fancer.lancer@...il.com>,
        <UNGLinuxDriver@...rochip.com>
Subject: Re: [PATCH net-next V1] net: pcs: xpcs: Add 2500BASE-X case in get
 state for XPCS drivers

Hi Russell King,

Thank you for review the patch.

The 10/26/2023 10:01, Russell King (Oracle) wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> On Thu, Oct 26, 2023 at 11:13:05AM +0530, Raju Lakkaraju wrote:
> > +     sts = xpcs_read(xpcs, MDIO_MMD_VEND2, DW_VR_MII_MMD_STS);
> > +
> > +     state->link = !!(sts & DW_VR_MII_MMD_STS_LINK_STS);
> > +     if (!state->link) {
> > +             state->speed = SPEED_UNKNOWN;
> > +             state->pause = MLO_PAUSE_NONE;
> > +             state->duplex = DUPLEX_UNKNOWN;
> > +             return 0;
> > +     }
> 
> You don't need this. If autoneg is enabled then these are initialised
> prior to calling this by phylink using:
> 
>                 state->speed = SPEED_UNKNOWN;
>                 state->duplex = DUPLEX_UNKNOWN;
>                 state->pause = MLO_PAUSE_NONE;
> 

Ok. I will remove the change.

Thanks,
Raju

> or if not using autoneg:
> 
>                 state->speed =  pl->link_config.speed;
>                 state->duplex = pl->link_config.duplex;
>                 state->pause = pl->link_config.pause;
> 
> so you don't need to touch them if the link is down.
> 
> --
> RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
> FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!

-- 
--------                                                                        
Thanks,                                                                         
Raju