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Message-ID: <20190501203424.GG19809@lunn.ch> Date: Wed, 1 May 2019 22:34:24 +0200 From: Andrew Lunn <andrew@...n.ch> To: Heiner Kallweit <hkallweit1@...il.com> Cc: Florian Fainelli <f.fainelli@...il.com>, David Miller <davem@...emloft.net>, "netdev@...r.kernel.org" <netdev@...r.kernel.org> Subject: Re: [PATCH net-next] net: phy: improve resuming from hibernation On Wed, May 01, 2019 at 10:14:21PM +0200, Heiner Kallweit wrote: > 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. Hi Heiner Going via PHY_UP is reasonable. I'm doing the same in my WIP cable test code, to restore the PHY after it finishes the test. Reviewed-by: Andrew Lunn <andrew@...n.ch> Andrew
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