38 lines
1.2 KiB
Diff
38 lines
1.2 KiB
Diff
From: Felix Fietkau <nbd@nbd.name>
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Date: Sat, 14 May 2016 14:51:02 +0200
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Subject: [PATCH] Revert "ath9k: interpret requested txpower in EIRP
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domain"
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This reverts commit 71f5137bf010c6faffab50c0ec15374c59c4a411.
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---
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--- a/drivers/net/wireless/ath/ath9k/hw.c
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+++ b/drivers/net/wireless/ath/ath9k/hw.c
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@@ -2931,7 +2931,8 @@ void ath9k_hw_apply_txpower(struct ath_h
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{
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struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
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struct ieee80211_channel *channel;
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- int chan_pwr, new_pwr;
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+ int chan_pwr, new_pwr, max_gain;
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+ int ant_gain, ant_reduction = 0;
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if (!chan)
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return;
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@@ -2939,10 +2940,15 @@ void ath9k_hw_apply_txpower(struct ath_h
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channel = chan->chan;
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chan_pwr = min_t(int, channel->max_power * 2, MAX_RATE_POWER);
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new_pwr = min_t(int, chan_pwr, reg->power_limit);
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+ max_gain = chan_pwr - new_pwr + channel->max_antenna_gain * 2;
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+
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+ ant_gain = get_antenna_gain(ah, chan);
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+ if (ant_gain > max_gain)
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+ ant_reduction = ant_gain - max_gain;
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ah->eep_ops->set_txpower(ah, chan,
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ath9k_regd_get_ctl(reg, chan),
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- get_antenna_gain(ah, chan), new_pwr, test);
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+ ant_reduction, new_pwr, test);
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}
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void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)
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