linux-kernel - Re: WOL with forcedeth broken since f55c21fd9a92a444e55ad1ca4e4732d56661bf2e

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Message-ID: <20090206065912.GA3614@pmhahn.de>
Date:	Fri, 6 Feb 2009 07:59:12 +0100
From:	Philipp Matthias Hahn <pmhahn@...an.lahn.de>
To:	Yinghai Lu <yinghai@...nel.org>, "Rafael J. Wysocki" <rjw@...k.pl>,
	Yinghai Lu <yhlu.kernel@...il.com>,
	Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Tobias Diedrich <ranma+kernel@...edrich.de>,
	Ayaz Abdulla <aabdulla@...dia.com>,
	Jeff Garzik <jeff@...zik.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jeff Garzik <jgarzik@...hat.com>
Subject: Re: WOL with forcedeth broken since
	f55c21fd9a92a444e55ad1ca4e4732d56661bf2e

Hello again!

On Fri, Feb 06, 2009 at 06:33:20AM +0100, Philipp Matthias Hahn wrote:
> Just this morning I had to use the reverted address to wake up my
> desktop PC after 6 hours of poweroff.

I did some structured tesing:

1. WOL does _not_ work at all when I do:
	(grub) boot into initrd
	(initrd) modprobe forcedeth
	(initrd) ethtool -s eth0 wol g
*	(initrd) poweroff

2. WOL does _not_ work at all when I do:
	(grub) boot into initrd
	(initrd) modprobe forcedeth
	(initrd) ethtool -s eth0 wol g
*	(initrd) Alt-SysRq-O

3. WOL works using the _un-reversed_ MAC when I do:
	(grub) boot into initrd
	(initrd) modprobe forcedeth
	(initrd) ethtool -s eth0 wol g
*	(initrd) Alt-SysRq-B
*	(grub) halt

4. WOL works using the _reversed_ MAC when I do:
	(grub) boot into initrd
	(initrd) modprobe forcedeth
	(initrd) ethtool -s eth0 wol g
	(initrd) exit
*	(Debian) poweroff

If I do the poweroff from linux (either initrd or Debian), forcedeth
seems to display some messages just before poweroff. I'll try to get
hands on a Serial-USB-Converter and a NULL-modem-cable to capture it,
since my laptop is legacy-free :-(

BYtE
Philipp Hahn

PS: initrd is actually initramfs, before somebody wonders.
-- 
  / /  (_)__  __ ____  __ Philipp Hahn
 / /__/ / _ \/ // /\ \/ /
/____/_/_//_/\_,_/ /_/\_\ pmhahn@...an.lahn.de
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