package/kernel/mac80211/patches/303-Revert-ath9k-interpret-requested-txpower-in-EIRP-dom.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Sat, 14 May 2016 14:51:02 +0200
   3 Subject: [PATCH] Revert "ath9k: interpret requested txpower in EIRP
   4  domain"
   5
   6 This reverts commit 71f5137bf010c6faffab50c0ec15374c59c4a411.
   7 ---
   8
   9 --- a/drivers/net/wireless/ath/ath9k/hw.c
  10 +++ b/drivers/net/wireless/ath/ath9k/hw.c
  11 @@ -2910,7 +2910,8 @@ void ath9k_hw_apply_txpower(struct ath_h
  12  {
  13         struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
  14         struct ieee80211_channel *channel;
  15 -       int chan_pwr, new_pwr;
  16 +       int chan_pwr, new_pwr, max_gain;
  17 +       int ant_gain, ant_reduction = 0;
  18
  19         if (!chan)
  20                 return;
  21 @@ -2918,10 +2919,15 @@ void ath9k_hw_apply_txpower(struct ath_h
  22         channel = chan->chan;
  23         chan_pwr = min_t(int, channel->max_power * 2, MAX_RATE_POWER);
  24         new_pwr = min_t(int, chan_pwr, reg->power_limit);
  25 +       max_gain = chan_pwr - new_pwr + channel->max_antenna_gain * 2;
  26 +
  27 +       ant_gain = get_antenna_gain(ah, chan);
  28 +       if (ant_gain > max_gain)
  29 +               ant_reduction = ant_gain - max_gain;
  30
  31         ah->eep_ops->set_txpower(ah, chan,
  32                                  ath9k_regd_get_ctl(reg, chan),
  33 -                                get_antenna_gain(ah, chan), new_pwr, test);
  34 +                                ant_reduction, new_pwr, test);
  35  }
  36
  37  void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)