Re: [PATCH 2/3] scsi: add hooks for host runtime power management

[Tejun Heo]

Hello,

On Thu, Nov 3, 2011 at 8:39 AM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:
>> I don't know. I haven't really thought about it but as it's currently
>> designed, I don't think it'll be possible to avoid going through EH to
>> put ATA ports into suspend mode.
>
> Why not?

It's just how things are designed now.  There's no reason why it's
fundamentally impossible but going around that would require some
amount of hackery or preferably re-design.  Synchronization against
command processing, interrupts and all are built around EH.

Thanks.

-- 
tejun
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