ath9k: initialize tx chainmask before testing channel tx power values

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>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index dceaa4a82811e013c4ac687fd163fe7569e029e1..2e9634641c468c29d4924590882c4ab27edfa33d 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -669,8 +669,10 @@ 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)