ath9k: initialize tx chainmask before testing channel tx power values

commit c1227340ca65c2069222a956a68b6842d460c4f4 upstream.

With an uninitialized chainmask, the per-channel power will only contain
the power limits for a single chain instead of the combined tx power.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index 45c585a337e9885b336f1ae50731170f6f63344c..5a9fd21faf8df65874d8be18501059549dd7f7b7 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -665,8 +665,10 @@ static void ath9k_init_band_txpower(struct ath_softc *sc, int band)
 static void ath9k_init_txpower_limits(struct ath_softc *sc)
 {
        struct ath_hw *ah = sc->sc_ah;
+       struct ath_common *common = ath9k_hw_common(sc->sc_ah);
        struct ath9k_channel *curchan = ah->curchan;
 
+       ah->txchainmask = common->tx_chainmask;
        if (ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
                ath9k_init_band_txpower(sc, IEEE80211_BAND_2GHZ);
        if (ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)