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Date: Wed, 11 Jul 2001 13:01:37 +0200
From: Martin Knoblauch <Martin.Knoblauch@TeraPort.de>
Organization: TeraPort GmbH
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To: Jeff Garzik <jgarzik@mandrakesoft.com>
CC: Kai Germaschewski <kai@tp1.ruhr-uni-bochum.de>,
        Patrick Mochel <mochel@transmeta.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        saw@saw.sw.com.sg
Subject: Re: 2.4.6.-ac2: Problems with eepro100
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Jeff Garzik wrote:
> 
> On Mon, 9 Jul 2001, Kai Germaschewski wrote:
> 
> > On Mon, 9 Jul 2001, Patrick Mochel wrote:
> >
> 
> Do a register dump of working and dead-after-PM-transition, including
> PCI config registers, and look for differences.  Also look for
> differences in your host and PCI-PCI bridge PCI config registers.

 Instructions on how to do the dumps? Sorry, I have not been that deep
into these matters until now :-)

 Just as an experiment, I modified the 246-ac2 eepro100.c driver to
never set the devive into D2 mode. As a result, I can now ifconfig
down/up as much as I want without killing the network. So I guess it is
really PM related.

*** eepro100.c-ac2      Mon Jul  9 12:30:53 2001
--- eepro100.c  Wed Jul 11 12:47:07 2001
***************
*** 780,782 ****
        /* Put chip into power state D2 until we open() it. */
!       pci_set_power_state(pdev, 2);
 
--- 780,782 ----
        /* Put chip into power state D2 until we open() it. */
!       pci_set_power_state(pdev, 0); /*MKN*/
 
***************
*** 1835,1837 ****
 
!       pci_set_power_state(sp->pdev, 2);
 
--- 1835,1837 ----
 
!       pci_set_power_state(sp->pdev, 0); /* MKN */


Martin
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Martin Knoblauch         |    email:  Martin.Knoblauch@TeraPort.de
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