linux-kernel - Re: [PATCH net v2] net: mvpp2: 10G modes aren't supported on all ports

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Message-ID: <20181214160944.GE20364@kwain>
Date:   Fri, 14 Dec 2018 17:09:44 +0100
From:   Antoine Tenart <antoine.tenart@...tlin.com>
To:     Russell King - ARM Linux <linux@...linux.org.uk>
Cc:     Antoine Tenart <antoine.tenart@...tlin.com>, davem@...emloft.net,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        thomas.petazzoni@...tlin.com, maxime.chevallier@...tlin.com,
        gregory.clement@...tlin.com, miquel.raynal@...tlin.com,
        nadavh@...vell.com, stefanc@...vell.com, ymarkman@...vell.com,
        mw@...ihalf.com, Baruch Siach <baruch@...s.co.il>
Subject: Re: [PATCH net v2] net: mvpp2: 10G modes aren't supported on all
 ports

Hi Russell,

On Fri, Dec 14, 2018 at 04:02:50PM +0000, Russell King - ARM Linux wrote:
> On Fri, Dec 14, 2018 at 10:34:51AM +0100, Antoine Tenart wrote:
> > The mvpp2_phylink_validate() function sets all modes that are
> > supported by a given PPv2 port. A recent change made all ports to
> > advertise they support 10G modes in certain cases. This is not true,
> > as only the port #0 can do so. This patch fixes it.
> > 
> > Fixes: 01b3fd5ac97c ("net: mvpp2: fix detection of 10G SFP modules")
> > Cc: Baruch Siach <baruch@...s.co.il>
> > Signed-off-by: Antoine Tenart <antoine.tenart@...tlin.com>
> 
> Looking at net-next, I think there's more to be fixed here:
> 
>         case PHY_INTERFACE_MODE_RGMII:
>         case PHY_INTERFACE_MODE_RGMII_ID:
>         case PHY_INTERFACE_MODE_RGMII_RXID:
>         case PHY_INTERFACE_MODE_RGMII_TXID:
>         case PHY_INTERFACE_MODE_SGMII:
> ...
> 		phylink_set(mask, 10000baseT_Full);
> 
> Is that really true?

Good catch. Will you send a fix or do you want me to do it?

Thanks,
Antoine

-- 
Antoine Ténart, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com