On Sat, May 24, 2014 at 01:15:56AM +0200, Rafael J. Wysocki wrote: > On Thursday, May 22, 2014 11:14:49 AM Mark Brown wrote: > > > There are more weird cases still. For example, we have the _DEP object in > > > ACPI that basically says "this device depends on that one" and there may be > > > no other relationship between the two whatsoever. How are we supposed to > > > implement this within the existing frameworks? > > That sounds like something that should be baked into however ACPI is > > hooked in already? > No, it is not. It is a relatively new addition to ACPI and we don't support > it today. That's because it hasn't been present in the ACPI tables of any > production systems until recently. > However, today we have systems with it shipping and we need to add support > for it. Sorry, I wasn't clear - what I meant was that it should be something that can be handled based on information the ACPI implementation already has, I had been under the impression it got notification of all the basic PM transitions already?