multi-function PCI device claiming.

multi-function PCI device claiming.

[Dave Jones]

I had a user report a bug against the Fedora kernel where
his Matrox G400 wouldn't work with the matrox framebuffer
driver any more.
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=195825

It turned out to be caused by the fact that the matrox_w1
one-wire driver had loaded first.  Moving that driver
out of the way so that it didn't get loaded would allow
the framebuffer driver to load.

There are a number of similar cases like this which seem
to be coming out of the woodwork lately.  I've also heard
as-yet unconfirmed rumours that agp-intel and one of the
watchdog drivers suffers the same "first to load wins" problem.

What's the correct way to fix this ?

		Dave

-- 
http://www.codemonkey.org.uk

Re: multi-function PCI device claiming.

[Alan]

On Mon, 20 Nov 2006 12:41:30 -0500
Dave Jones <davej@redhat.com> wrote:
> What's the correct way to fix this ?

Support a general system for multiple devices sharing a PCI device. AGP
has this problem, EDAC has this problem, serial/parallel ports have a
magic driver hack for it and so on...