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The ath patch number is already large and adding other patch for ath11k will add more confusion with the patch numbering. Since the support of ath11k based device is imminent, prepare the mac80211 ath patch dir and split it in the dedicated ath5k, ath9k, ath10k and ath11k (empty for now). Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
25 lines
761 B
Diff
25 lines
761 B
Diff
From: Felix Fietkau <nbd@nbd.name>
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Date: Wed, 19 Jul 2017 08:49:31 +0200
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Subject: [PATCH] ath9k: adjust tx power reduction for US regulatory
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domain
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FCC regulatory rules allow for up to 6 dBi antenna gain. Account for
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this in the EEPROM based tx power reduction code.
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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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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@@ -2996,6 +2996,10 @@ void ath9k_hw_apply_txpower(struct ath_h
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if (ant_gain > max_gain)
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ant_reduction = ant_gain - max_gain;
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+ /* FCC allows maximum antenna gain of 6 dBi */
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+ if (reg->region == NL80211_DFS_FCC)
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+ ant_reduction = max_t(int, ant_reduction - 12, 0);
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+
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ah->eep_ops->set_txpower(ah, chan, ctl,
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ant_reduction, new_pwr, test);
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}
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