"ahci: drop intx manipulation on msi enable" breaks ULI M1575

[Tejun Heo]

Timur Tabi wrote:
> Tejun Heo wrote:
> 
>> Yeah, right.  The following patch should do the trick then.
> 
> Thanks, I appreciate it.  I get this output:
> 
> XXX PCI_COMMAND=0x407
                    ^

Yeah, that's INTX disable.  Strange that the controller has the bit
set on boot.  I'm curious where this is from, the controller reset,
firmware or the PCI init (in decreasing likelihood).  Hmmm... for now,
I think it would be best to revert the original change.  Jeff, can you
please do that?

Thanks.

-- 
tejun