From: Felix Fietkau Date: Wed, 19 Jul 2017 06:54:53 +0000 (+0200) Subject: ath9k: adjust tx power reduction for US regulatory domain X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=9b6585b11a48c62566418b920afe14204f40f87b;p=openwrt%2Fstaging%2Fkaloz.git ath9k: adjust tx power reduction for US regulatory domain FCC regulatory rules allow for up to 3 dBi antenna gain. Account for this in the EEPROM based tx power reduction code. Signed-off-by: Felix Fietkau --- diff --git a/package/kernel/mac80211/patches/330-ath9k-adjust-tx-power-reduction-for-US-regulatory-do.patch b/package/kernel/mac80211/patches/330-ath9k-adjust-tx-power-reduction-for-US-regulatory-do.patch new file mode 100644 index 0000000000..38b52644a3 --- /dev/null +++ b/package/kernel/mac80211/patches/330-ath9k-adjust-tx-power-reduction-for-US-regulatory-do.patch @@ -0,0 +1,23 @@ +From: Felix Fietkau +Date: Wed, 19 Jul 2017 08:49:31 +0200 +Subject: [PATCH] ath9k: adjust tx power reduction for US regulatory domain + +FCC regulatory rules allow for up to 3 dBi antenna gain. Account for +this in the EEPROM based tx power reduction code. + +Signed-off-by: Felix Fietkau +--- + +--- a/drivers/net/wireless/ath/ath9k/hw.c ++++ b/drivers/net/wireless/ath/ath9k/hw.c +@@ -2954,6 +2954,10 @@ void ath9k_hw_apply_txpower(struct ath_h + if (ant_gain > max_gain) + ant_reduction = ant_gain - max_gain; + ++ /* FCC allows maximum antenna gain of 3 dBi */ ++ if (reg->region == NL80211_DFS_FCC) ++ ant_reduction = min_t(int, ant_reduction - 6, 0); ++ + ah->eep_ops->set_txpower(ah, chan, ctl, ant_reduction, new_pwr, test); + } +