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Date:   Sat, 9 Feb 2019 20:12:04 +0100
From:   Heiner Kallweit <>
To:     Andrew Lunn <>
Cc:     Florian Fainelli <>,
        David Miller <>,
        "" <>
Subject: Re: [PATCH net-next] net: phy: Add support for asking the PHY its

On 09.02.2019 17:35, Andrew Lunn wrote:
> On Sat, Feb 09, 2019 at 03:24:47PM +0100, Heiner Kallweit wrote:
>> From: Andrew Lunn <>
>> Add support for runtime determination of what the PHY supports, by
>> adding a new function to the phy driver. The get_features call should
>> set the phydev->supported member with the features the PHY supports.
>> It is only called if phydrv->features is NULL.
>> This requires minor changes to pause. The PHY driver should not set
>> pause abilities, except for when it has odd cause capabilities, e.g.
>> pause cannot be disabled. With this change, phydev->supported already
>> contains the drivers abilities, including pause. So rather than
>> considering phydrv->features, look at the phydev->supported, and
>> enable pause if neither of the pause bits are already set.
> Hi Heiner
> Ah, cool, these are the patches i was asking for, when you asked
> about splitting Maxime's patches. There is one more in my tree which
> converts the marvell10g to using this. I think that should be posted
> as well. It makes it clear how this should be used, and it replaces
> one of the patches in Maxime's set.
I know, it's patch 15 in your series ;) And I'm aware that usually new
core functionality is acceptable only if it comes together with a user,
to avoid having billions of orphaned good ideas in the code.
I focused on the core here to not get lost in all the new stuff, and to
provide Maxime with some direction for adjusting his series.

>> Signed-off-by: Andrew Lunn <>
>> [ fixed small checkpatch complaint in one comment]
> Thanks.
> 	Andrew

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