ATA driver races with interrupts

[Ville-Pertti Keinonen]

Kenneth Culver wrote:

> I have this exact same motherboard, but I'm using the onboard promise 
> controller
> set up with 2 disks as a raid0, and I'm not having any problems with this
> setup. I used the promise controller because from what I've been told, 
> the
> promise controllers are very fast in FreeBSD compared to other 
> controllers.

If the two disks appear as one to FreeBSD, the problem probably isn't 
going to show up.

It may also depend on the controller, since the channel registers might 
not satisfy the conditions in ata_generic_interrupt (I didn't bother 
digging up my ATA specs while debugging this), but even if it is a 
controller oddity, I don't think the ATA driver should be sensitive such 
conditions.