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

[Kristen Carlson Accardi]

On Tue, 12 Jun 2007 11:46:56 -0400
Jeff Garzik <jeff@xxxxxxxxxx> wrote:

> Matthew Garrett wrote:
> > On Tue, Jun 12, 2007 at 11:17:14AM -0300, Henrique de Moraes Holschuh wrote:
> >> On Tue, 12 Jun 2007, Matthew Garrett wrote:
> >>> Laptop bays are designed to deal with hotplugging PATA - I don't think 
> >>> this is too much of an issue :)
> >> The new SATA ones use the SATA hardware hotplug ;-)   Just like the pci-e
> >> cards use usb2.0 and pci-e hotplug...
> > 
> > Yes, but they'll also send an ACPI interrupt even if the SATA host 
> > controller doesn't - it's part of the spec for bays.
> 
> Regardless, having a laptop does not imply having a docking bay.
> 
> 	Jeff
> 

For bay devices, we can use ACPI just like we do now.  For non-bay devices,
we can implement hotplug via polling when ALPM is enabled.  In my experience
most laptop vendors implement extra drive as either PATA in a dock station, 
USB in a dock station, or a bay device either on the dock station, or 
on the laptop itself.


Kristen
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