Re: [PATCH v3 1/3] PM: domains: Make set_performance_state() callback optional

[Viresh Kumar]

On 18-01-21, 11:59, Ulf Hansson wrote:
> Good point! I certainly overlooked that when reviewing. We need to
> reevaluate the new state when propagating to the parent(s).
> 
> To me, it looks like when doing the propagation we must check if the
> parent has the ->set_performance_state() callback assigned. If so, we
> should call dev_pm_opp_xlate_performance_state(), but otherwise just
> use the value of "state", when doing the reevaluation.
> 
> Does it make sense?

That will work but I am wondering if there is a way to avoid the
unnecessary propagation if we can somehow find out if someone above in
hierarchy supports pstates or not ?

-- 
viresh