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Date:	Wed, 25 Jul 2007 01:30:31 +0200
From:	"Michal Piotrowski" <>
To:	"Florian Lohoff" <>
Cc:	"Stephen Hemminger" <>,,
Subject: Re: 2.6.23-rc1 sky2 boot crash in sky2_mac_intr

Hi Florian,

On 24/07/07, Florian Lohoff <> wrote:
> On Tue, Jul 24, 2007 at 09:50:08AM +0100, Stephen Hemminger wrote:
> > The problem is related to power management. The PHY has a number of PCI configuration
> > registers for power control, and the function of these changes based on the version and
> > revision of the chip. The driver does work on older versions of the EC-U, in
> > Fujitsu laptop's, it is just the new rev that is broken.
> >
> > The driver should probably fail smarter (by not loading) if the PHY isn't powered
> > up correctly, but that doesn't help your problem.
> >
> > The vendor has provided me with documentation on many versions
> > of the chip, but I don't have doc's on the lastest revision differences of the EC Ultra,
> > so a proper solution is not easily available.  The best method for resolving this would
> > be to first try the vendor driver version of sk98lin and see if that fixes it. If so,
> > then it is easy to change sky2, to match the phy setup in the vendor driver.
> > Another possibility is to look for places in sky2 driver where there are places
> > that compare version/revision.
> >
> > The most likely bits that need to change are in PCI registers: 0x80, 0x84 and 0x88
> > You could also load the windows driver and dump PCI config space (with lspci from
> > cygwin), and see what the settings are there.
> >
> > I am away from my office for a month, and therefore away from any sky2
> > hardware for testing.
> I'll try the above and keep you posted. The crash itself seems to be a
> 2.6.23-rc1 regression though. I never experienced this with 2.6.22-rc5
> which i was running before.

Can you try to figure out what is causing this crash and then use git-bisect?


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