netdev - Re: [PATCH net-next] net: phy: improve resuming from hibernation

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Message-Id: <20190504.005112.1264102313169100175.davem@davemloft.net>
Date:   Sat, 04 May 2019 00:51:12 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     hkallweit1@...il.com
Cc:     andrew@...n.ch, f.fainelli@...il.com, netdev@...r.kernel.org
Subject: Re: [PATCH net-next] net: phy: improve resuming from hibernation

From: Heiner Kallweit <hkallweit1@...il.com>
Date: Wed, 1 May 2019 22:14:21 +0200

> I got an interesting report [0] that after resuming from hibernation
> the link has 100Mbps instead of 1Gbps. Reason is that another OS has
> been used whilst Linux was hibernated. And this OS speeds down the link
> due to WoL. Therefore, when resuming, we shouldn't expect that what
> the PHY advertises is what it did when hibernating.
> Easiest way to do this is removing state PHY_RESUMING. Instead always
> go via PHY_UP that configures PHY advertisement.
> 
> [0] https://bugzilla.kernel.org/show_bug.cgi?id=202851
> 
> Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>

Applied.