Alan Cox wrote:
quoted text
>> I think there have been enough cases where this draining was necessary.
>>  IIRC, ata_piix was involved in those cases, right?  If so, can you
>> please submit a patch which applies this only to affected controllers?
>> I don't feel too confident about applying this to all SFF controllers.
> 
> Old IDE does it on all controllers bar a couple. So we have a very good
> knowledge of what does/doesn't work. The one that needs care in old ide
> is an ordering issue where a state machine reset done first causes the
> drain of the I/O to hang.

Hmmm... So, do we apply draining to all PATA?  Or is ata_piix SATA
affected too?

-- 
tejun
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