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| author | Felix Fietkau <nbd@nbd.name> | 2017-07-19 08:54:53 +0200 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2017-07-24 10:47:55 +0200 |
| commit | 9b6585b11a48c62566418b920afe14204f40f87b (patch) | |
| tree | 4a4e8ff264b57abb31eac33ca3db793ae9dc603c /package/kernel | |
| parent | d72371e42bd5b8738a75a75d970bc73b90cd9839 (diff) | |
| download | upstream-9b6585b11a48c62566418b920afe14204f40f87b.tar.gz upstream-9b6585b11a48c62566418b920afe14204f40f87b.tar.bz2 upstream-9b6585b11a48c62566418b920afe14204f40f87b.zip | |
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 <nbd@nbd.name>
Diffstat (limited to 'package/kernel')
| -rw-r--r-- | package/kernel/mac80211/patches/330-ath9k-adjust-tx-power-reduction-for-US-regulatory-do.patch | 23 |
1 files changed, 23 insertions, 0 deletions
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 <nbd@nbd.name> +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 <nbd@nbd.name> +--- + +--- 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); + } + |