linux-kernel - Re: [E1000-devel] e1000: "eeprom checksum is not valid" after kexec

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Message-Id: <200905111731.25043.rjw@sisk.pl>
Date:	Mon, 11 May 2009 17:31:24 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Jiri Slaby <jirislaby@...il.com>
Cc:	Thadeu Lima de Souza Cascardo <cascardo@...oscopio.com>,
	e1000-devel@...ts.sourceforge.net, Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>
Subject: Re: [E1000-devel] e1000: "eeprom checksum is not valid" after kexec

On Monday 11 May 2009, Rafael J. Wysocki wrote:
> On Monday 11 May 2009, Jiri Slaby wrote:
> > On 04/24/2009 06:09 PM, Rafael J. Wysocki wrote:
> > > My understanding is that the commit pointed to by Jiri caused a problem
> > > if the current mainline kernel was kexeced from an older kernel (2.6.27.x from
> > > openSUSE-11.1 in this particular case), because the older kernel didn't
> > > have the recent network driver fixes applied.  Is this correct?
> > 
> > Exactly!
> > 
> > > Also, I'm still interested in whether or not removig the following three lines:
> > > 
> > >         /* Check if we're already there */
> > >         if (dev->current_state == state)
> > >                 return 0;
> > > 
> > > from pci_set_power_state() in the current mainline kernel fixes the problem
> > > in the configuration where it is readily reproducible.
> > 
> > After removing those lines, the problem still persists:
> > e1000: 0000:02:01.0: e1000_probe: The EEPROM Checksum Is Not Valid
> 
> So it's more complicated than I thought.  Well ...
> 
> What if the driver in question is rmmoded before kexec?

Well, it should be the same, never mind.
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