intel_pps_unlock
intel_pps_unlock(intel_dp, pps_wakeref);
struct ref_tracker *intel_pps_unlock(struct intel_dp *intel_dp, struct ref_tracker *wakeref);
for (struct ref_tracker *(wf) = intel_pps_lock(dp); (wf); (wf) = intel_pps_unlock((dp), (wf)))