From d9092c9873739429c9e97c4bc21ead9af2fb6aa1 Mon Sep 17 00:00:00 2001 From: Sujith Manoharan Date: Sun, 16 Nov 2014 06:11:09 +0530 Subject: ath9k: Adjust tbtt delta properly In a GO/STA setup, when we switch to the STA context, the channel context timer is scheduled with a period of half the beacon interval. If a beacon is received in this duration, the timer is adjusted to accommodate TSF sync done by the HW. But, if the actual channel switch is delayed for some reason, we end up rearming the timer every time a new beacon is received. Avoid this by doing the adjustment only once. Signed-off-by: Sujith Manoharan Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/channel.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers/net/wireless/ath/ath9k/channel.c') diff --git a/drivers/net/wireless/ath/ath9k/channel.c b/drivers/net/wireless/ath/ath9k/channel.c index ee76682cc058..99425fe13055 100644 --- a/drivers/net/wireless/ath/ath9k/channel.c +++ b/drivers/net/wireless/ath/ath9k/channel.c @@ -659,6 +659,7 @@ void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif, sc->sched.beacon_miss = 0; if (sc->sched.state == ATH_CHANCTX_STATE_FORCE_ACTIVE || + !sc->sched.beacon_adjust || !sc->cur_chan->tsf_val) break; @@ -672,7 +673,7 @@ void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif, ath9k_hw_get_tsf_offset(&sc->cur_chan->tsf_ts, NULL); tsf_time += ath9k_hw_gettsf32(ah); - + sc->sched.beacon_adjust = false; ath_chanctx_setup_timer(sc, tsf_time); break; case ATH_CHANCTX_EVENT_AUTHORIZED: @@ -717,6 +718,7 @@ void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif, ath_chanctx_setup_timer(sc, tsf_time); sc->sched.beacon_pending = true; + sc->sched.beacon_adjust = true; break; case ATH_CHANCTX_EVENT_ENABLE_MULTICHANNEL: if (sc->cur_chan == &sc->offchannel.chan || -- cgit