ath9k: fix ibss beacon next tbtt

Sync-up ibss beacon timer with the beacon frame's timestamp. When the
node acts as joiner, it has to sync with the received beacon timestamp
instead of reading tsf from hw. As the hw tsf wont wont be update till
bssid is configured. This patch programs hw tsf with the received beacon
timestamp if beacon timers are yet to be configured.

Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c
index df5b6acd805f..1bf2f57b091c 100644
--- a/drivers/net/wireless/ath/ath9k/beacon.c
+++ b/drivers/net/wireless/ath/ath9k/beacon.c
@@ -653,6 +653,8 @@ static void ath_beacon_config_adhoc(struct ath_softc *sc,
         u32 tsf, intval, nexttbtt;
 
         ath9k_reset_beacon_status(sc);
+        if (!(sc->sc_flags & SC_OP_BEACONS))
+                ath9k_hw_settsf64(ah, sc->beacon.bc_tstamp);
 
         intval = TU_TO_USEC(conf->beacon_interval);
         tsf = roundup(ath9k_hw_gettsf32(ah) + TU_TO_USEC(FUDGE), intval);