netdev - Re: IAMT broken by commit 82776a4bcd7aa5fbcd2e6339b3ce88b727dd40ab

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Message-ID: <1296516256.3526.9.camel@jtkirshe-MOBL1>
Date:	Mon, 31 Jan 2011 15:24:16 -0800
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	David Miller <davem@...emloft.net>
Cc:	"aurelien@...el32.net" <aurelien@...el32.net>,
	"Allan, Bruce W" <bruce.w.allan@...el.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: IAMT broken by commit 82776a4bcd7aa5fbcd2e6339b3ce88b727dd40ab

On Mon, 2011-01-31 at 12:36 -0800, David Miller wrote:
> From: Aurelien Jarno <aurelien@...el32.net>
> Date: Mon, 31 Jan 2011 12:45:58 +0100
> 
> >> On recent kernels, IAMT support does not work after the machine has 
> >> been powered-off. Even worse, it also goes into this state when I try
> >> to reboot it.
> >> 
> >> I have done a bisect and got this commit:
> >> 
> >> | commit 82776a4bcd7aa5fbcd2e6339b3ce88b727dd40ab
> >> | Author: Bruce Allan <bruce.w.allan@...el.com>
> >> | Date:   Fri Aug 14 14:35:33 2009 +0000
> >> | 
> >> |     e1000e: WoL does not work on 82577/82578 with manageability enabled
> >> |     
> >> |     With manageability (Intel AMT) enabled via BIOS, PHY wakeup does not get
> >> |     configured on newer parts which use PHY wakeup vs. MAC wakeup which causes
> >> |     WoL to not work.  The driver should configure PHY wakeup whether or not
> >> |     manageability is enabled.
> >> |     
> >> |     Signed-off-by: Bruce Allan <bruce.w.allan@...el.com>
> >> |     Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
> >> |     Signed-off-by: David S. Miller <davem@...emloft.net>
> >> 
> >> I have tried to revert it on recent kernels (2.6.34), and IAMT is then
> >> working as expected. My machine is using a Gigabyte EQ45M-S2 motherboard
> >> with an 82567LM-3 ethernet chip (8086:10de), that is a different model
> >> than the one of the original problem.
> >> 
> >> I do wonder if the changes in the patch should not only be done on some 
> >> chip models, and I will appreciate any help in fixing this issue.
> >> 
> > 
> > Just a short mail to say this problem is still present in 2.6.38-rc2.
> > The same solution still applies, that is reverting the above commit.
> > Note that reverting the first hunk only is enough to get it working
> > again.
> 
> Intel folks please look into this.

We at looking into it, thanks.

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