From b238e90e99fe51aed14d20eae8a6a1c04ce4ca30 Mon Sep 17 00:00:00 2001 From: Sujith Date: Tue, 3 Mar 2009 10:16:56 +0530 Subject: ath9k: Handle TSF properly for AP mode The TSF has to be reset only once, upon bringing the interface up in AP mode. For any beacon reconfigure calls after that, resetting the TSF results in incorrect beacon generation. The only exception is a change in the beacon interval, which is indicated to the driver by mac80211 through IEEE80211_CONF_CHANGE_BEACON_INTERVAL, handle this properly. Signed-off-by: Sujith Signed-off-by: John W. Linville --- drivers/net/wireless/ath9k/beacon.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'drivers/net/wireless/ath9k/beacon.c') diff --git a/drivers/net/wireless/ath9k/beacon.c b/drivers/net/wireless/ath9k/beacon.c index 74916431f57..d1365726d2f 100644 --- a/drivers/net/wireless/ath9k/beacon.c +++ b/drivers/net/wireless/ath9k/beacon.c @@ -510,6 +510,11 @@ static void ath_beacon_config_ap(struct ath_softc *sc, { u32 nexttbtt, intval; + /* Configure the timers only when the TSF has to be reset */ + + if (!(sc->sc_flags & SC_OP_TSF_RESET)) + return; + /* NB: the beacon interval is kept internally in TU's */ intval = conf->beacon_interval & ATH9K_BEACON_PERIOD; intval /= ATH_BCBUF; /* for staggered beacons */ @@ -530,6 +535,11 @@ static void ath_beacon_config_ap(struct ath_softc *sc, ath9k_hw_beaconinit(sc->sc_ah, nexttbtt, intval); sc->beacon.bmisscnt = 0; ath9k_hw_set_interrupts(sc->sc_ah, sc->imask); + + /* Clear the reset TSF flag, so that subsequent beacon updation + will not reset the HW TSF. */ + + sc->sc_flags &= ~SC_OP_TSF_RESET; } /* -- cgit v1.2.3-70-g09d2