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

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Message-ID: <4A0836CA.5070709@gmail.com>
Date:	Mon, 11 May 2009 16:31:38 +0200
From:	Jiri Slaby <jirislaby@...il.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
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 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



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