Hello, Andi.

Andi Kleen wrote:
> Still doesn't work with it - see http://one.firstfloor.org/~andi/sata3.jpg

* SATA_IRQ bit is stuck (on all other sil controllers, this gets cleared 
when SError is cleared)

* whenever interrupt occurs (from itself or from any other ones sharing 
the IRQ), irq handler sees SATA_IRQ bit set and thus thinks it just 
received phy status changed IRQ.

* phy status change aborts the active command, so no command gets completed.

I'm attaching two patches.  The first one tries to clear SATA_IRQ by 
writing 1 to it in thaw() assuming the bit is implemented as W1C (which 
BTW is out of spec).  The second one kills SATA_IRQ handling completely. 
  I wish the first one works but if not I'll update the second one such 
that it applies only to ATI IXP.

Thanks.

-- 
tejun