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From: Felix Fietkau <nbd@nbd.name>
Date: Sat, 14 May 2016 14:51:02 +0200
Subject: [PATCH] Revert "ath9k: interpret requested txpower in EIRP
domain"
This reverts commit 71f5137bf010c6faffab50c0ec15374c59c4a411.
---
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -2977,7 +2977,8 @@ void ath9k_hw_apply_txpower(struct ath_h
{
struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
struct ieee80211_channel *channel;
- int chan_pwr, new_pwr;
+ int chan_pwr, new_pwr, max_gain;
+ int ant_gain, ant_reduction = 0;
u16 ctl = NO_CTL;
if (!chan)
@@ -2989,9 +2990,14 @@ void ath9k_hw_apply_txpower(struct ath_h
channel = chan->chan;
chan_pwr = min_t(int, channel->max_power * 2, MAX_COMBINED_POWER);
new_pwr = min_t(int, chan_pwr, reg->power_limit);
+ max_gain = chan_pwr - new_pwr + channel->max_antenna_gain * 2;
+
+ ant_gain = get_antenna_gain(ah, chan);
+ if (ant_gain > max_gain)
+ ant_reduction = ant_gain - max_gain;
ah->eep_ops->set_txpower(ah, chan, ctl,
- get_antenna_gain(ah, chan), new_pwr, test);
+ ant_reduction, new_pwr, test);
}
void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)
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