On Fri, 11 May 2012, 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. Right. Even if other vendors don't use this ACPI mechanism, some of them may very well implement the native USB port power control mechanism. If we add port power support to our drivers, we should certainly include native support. Alan Stern -- 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
