So, after getting out at different points from ni_dpm_set_power_state(), it
seems I can go down to ni_power_control_set_level() without problem. However,
if I move to the next call which is ret = ni_dpm_force_performance_level(rdev,
RADEON_DPM_FORCED_LEVEL_AUTO), it hangs.

Could it be because we are setting something wrong in auto performance level?
I'll be attaching my vbios just in case.