Re: [RFC: 2.6.19 patch] snd-hda-intel: default MSI to off

[Stephen Hemminger <shemminger@osdl.org>]

On Tue, 17 Oct 2006 23:13:01 +0200
Adrian Bunk <bunk@stusta.de> wrote:

> On Thu, Oct 05, 2006 at 11:08:57PM +0200, Prakash Punnoor wrote:
> > Am Donnerstag 05 Oktober 2006 19:30 schrieb Fatih A????c??:
> > > 2006/10/5, Prakash Punnoor <prakash@punnoor.de>:
> > > > Hi,
> > > >
> > > > subjects say it all. Without irqpoll my nic doesn't work anymore. I added
> > > > Ingo
> > > > to cc, as my IRQs look different, so it may be a prob of APIC routing or
> > > > the
> > > > like.
> > 
> > > > Can you try booting with pci=nomsi ? I have a similar problem with my
> > 
> > I used snd-hda-intel.disable_msi=1 and this actually helped! Now the nforce 
> > nic works w/o problems. So it was the audio driver causing havoc on the nic. 
> >...
> 
> Unless someone finds and fixes what causes such problems, I'd therefore 
> suggest the patch below to let MSI support to be turned off by default.
> 
> cu
> Adrian
> 

It shouldn't be that hard to write a small bit of code to force an interrupt
and catch it, that's what other drivers do to workaround the BIOS braindamage
that seems to be rampant (until M$ Vista comes out and supports MSI).