netdev - RE: [Bugme-new] [Bug 11865] New: WOL for E100 Doesn't Work Anymore

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Date:	Mon, 3 Nov 2008 11:04:13 -0800
From:	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"e1000-devel@...ts.sourceforge.net" 
	<e1000-devel@...ts.sourceforge.net>, "rjw@...k.pl" <rjw@...k.pl>
CC:	"bugme-daemon@...zilla.kernel.org" <bugme-daemon@...zilla.kernel.org>,
	"rogerx@....lonestar.org" <rogerx@....lonestar.org>
Subject: RE: [Bugme-new] [Bug 11865] New: WOL for E100 Doesn't Work Anymore

Andrew Morton wrote:
> (switched to email.  Please respond via emailed reply-to-all, not via
> the bugzilla web interface).
> 
> On Sun, 26 Oct 2008 21:56:35 -0700 (PDT)
> bugme-daemon@...zilla.kernel.org wrote: 
> 
>> http://bugzilla.kernel.org/show_bug.cgi?id=11865
>> 
>>            Summary: WOL for E100 Doesn't Work Anymore           
>>            Product: Drivers Version: 2.5
>>      KernelVersion: 2.6.27
>>           Platform: All
>>         OS/Version: Linux
>>               Tree: Mainline
>>             Status: NEW
>>           Severity: normal
>>           Priority: P1
>>          Component: Network
>>         AssignedTo: jgarzik@...ox.com
>>         ReportedBy: rogerx@....lonestar.org
>> 
>> 
>> Latest working kernel version: 2.6.27
> 
> This should read 2.6.26.  It is a regression.
> 
>> Earliest failing kernel version: 2.6.27
>> Distribution: Gentoo
>> Hardware Environment: 2x750P3 1G RAM w/
>> 
>> 00:14.0 Ethernet controller: Intel Corporation 82557/8/9 [Ethernet
>> Pro 100] (rev 08) 
>> 
>> Problem Description:
>> As of kernel version 2.6.27, WOL has stopped working.  The box no
>> longer powers on after the magic packet has been sent.  Rebooting
>> using kernel-2.6.26*, WOL *does* work! 

what does cat /proc/acpi/wakeup say?  (if you have legacy acpi procfs)

>> 
>> Steps to reproduce:
>> (Not needed.  Self Explanatory.)
>> 
>> 
>> I noticed 3 lines of code in e100.c added/modified since 2.6.26*,
>> however, I reversed 2 lines of code to 2.6.26 and the other line was
>> just added an additional pointer, for which I left alone. 
>> Recompiled, rebooted and WOL still didn't work using 2.6.27.  I'm
>> guessing, the source of this bug lies elsewhere. 

I think there is an outstanding patch set to "make device use the new
power management api"
http://marc.info/?l=linux-netdev&m=121874992800468&w=2

It doesn't appear this patch was in 2.6.27, I'm not sure why not, but I
am relatively afraid that lots of devices ability to wake up got busted
in 2.6.27.

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