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Re: PCI scanning IRQ fix.

From: Gianluca Guida
Subject: Re: PCI scanning IRQ fix.
Date: Mon, 30 Jan 2006 00:21:05 +0100


On 1/29/06, Marco Gerards <mgerards@xs4all.nl> wrote:
> That is weird.  I always thought that for compatibility reasons IRQs
> are always <16.  In case the OS supports more than 16 IRQs, the OS can
> change the IRQs to prevent shared IRQs.  With your NIC this is not the
> case, is this a BIOS bug or a setting in the BIOS you can change?

It's quite probably a BIOS bug. I remember to have had problem with
this laptop and its NIC even with Linux 2.4.

> Ignoring this device until there is a better solution is certainly the
> best thing to do, as I see it.

The right thing to do is to implement an PCI IRQ router that tell to
PCI bios what interrupt to use for that device (according to system's
IRQ Routing table). I am already implementing that.

> > I guess that for such a small path using Savannah's Patch system is a
> > waste, right?
> You can put it there if it is not applied soon.

Having no feedback is quite annoying and makes you feel like wasting your time.



It was a type of people I did not know, I found them very strange and
they did not inspire confidence at all. Later I learned that I had been
introduced to electronic engineers.
                                                  E. W. Dijkstra

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