Re: [patch 3/3] Enable Aggressive Link Power management for AHCI controllers.

On Tue, 12 Jun 2007, Matthew Garrett wrote:

On Mon, Jun 11, 2007 at 08:59:46PM -0700, Arjan van de Ven wrote:

quoted

that's a temporary shortcoming; even with these power savings you can 
do hotplug as long as you're willing to poll for it at a reasonable 
interval and are willing to wait the time between polls for a hotplug 
to take effect..

On laptops, I suspect that we'll probably get an ACPI interrupt even if 
the AHCI hotplug pathway can't manage.

As long as we don't crash the drive or AHCI controller because we hotplugged
it in a way it didn't like (like trying to hotplug a ICH5R would cause).

It is not like 1Hz would not be fast enough for laptop bays and docks, so
the polling frequency would not be a problem.  I still prefer when levels
and on/off are kept separate, but if it won't stand in the way of hotplug, I
certainly don't care enough to bother.

-- 
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