On Fri, May 11, 2012 at 05:17:22PM -0700, Greg KH wrote: > On Fri, May 11, 2012 at 04:59:22PM -0700, Sarah Sharp wrote: > > > > Only the xHCI host controller will have the port power off mechanism. > > > > > > You're only talking about the upcoming Intel implementation, right? > > > > Yes. The port power off mechanism is an Intel specific ACPI call. > > AFAIK, there isn't anyone else who is going to have this mechanism. > > That's not fair, you don't know what other vendors are going to do in > their controllers, or their system firmware, to be able to accurately say > this. Yes, you are correct, I don't know if other vendors will do this in the future, or if they'll use the same ACPI API. AFAIK, the port power off mechanism has only been discussed internally within Intel until this thread. So it's unlikely that anyone will have this mechanism in the near future. But as you said, never say never. :) We'll strive to make the mechanism as generic as possible, so that other vendors can add their own ACPI hooks into the xHCI driver if they choose to do a similar port power off mechanism. Sarah Sharp -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
