Matí­as Alejandro Torres wrote:
> CORRECTION:
> 
> I tried with the irqpoll parameter (used in the right way) and the sata
> disk is detected but lots of "unexpected IRQ trap at vector a0" are
> displayed. When the pci=nomsi flag is set, no warning/error is shown and
> the SATA disk is detected properly.
> 
> 
> This is for kernel version 2.6.17, I must be falling asleep.

Matias, are you still there?  If so, can you please test the attached
patch and see whether it fixes your problem - ie. boots okay without
'pci=nomsi'?

-- 
tejun