package/mac80211/patches/590-ath9k_fix_cycle_counter_ps.patch

   1 --- a/drivers/net/wireless/ath/ath9k/main.c
   2 +++ b/drivers/net/wireless/ath/ath9k/main.c
   3 @@ -94,11 +94,13 @@ void ath9k_ps_wakeup(struct ath_softc *s
   4  {
   5         struct ath_common *common = ath9k_hw_common(sc->sc_ah);
   6         unsigned long flags;
   7 +       enum ath9k_power_mode power_mode;
   8
   9         spin_lock_irqsave(&sc->sc_pm_lock, flags);
  10         if (++sc->ps_usecount != 1)
  11                 goto unlock;
  12
  13 +       power_mode = sc->sc_ah->power_mode;
  14         ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
  15
  16         /*
  17 @@ -106,10 +108,12 @@ void ath9k_ps_wakeup(struct ath_softc *s
  18          * useful data. Better clear them now so that they don't mess up
  19          * survey data results.
  20          */
  21 -       spin_lock(&common->cc_lock);
  22 -       ath_hw_cycle_counters_update(common);
  23 -       memset(&common->cc_survey, 0, sizeof(common->cc_survey));
  24 -       spin_unlock(&common->cc_lock);
  25 +       if (power_mode != ATH9K_PM_AWAKE) {
  26 +               spin_lock(&common->cc_lock);
  27 +               ath_hw_cycle_counters_update(common);
  28 +               memset(&common->cc_survey, 0, sizeof(common->cc_survey));
  29 +               spin_unlock(&common->cc_lock);
  30 +       }
  31
  32   unlock:
  33         spin_unlock_irqrestore(&sc->sc_pm_lock, flags);