From: Felix Fietkau Date: Fri, 19 Feb 2010 17:21:42 +0000 (+0100) Subject: ath9k: fix beacon timer restart after a card reset X-Git-Tag: firefly_0821_release~10186^2~2080 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=9ba155b84391989fb97ddb210c741d6abc44a613;p=firefly-linux-kernel-4.4.55.git ath9k: fix beacon timer restart after a card reset commit d8728ee919282c7b01b65cd479ec1e2a9c5d3ba8 upstream. In AP mode, ath_beacon_config_ap only restarts the timer if a TSF restart is requested. Apparently this was added, because this function unconditionally sets the flag for TSF reset. The problem with this is, that ath9k_hw_reset() clobbers the timer registers (specified in the initvals), thus effectively disabling the SWBA interrupt whenever a card reset without TSF reset is issued (happens in a few places in the code). This patch fixes ath_beacon_config_ap to only issue the TSF reset flag when necessary, but reinitialize the timer unconditionally. Tests show, that this is enough to keep the SWBA interrupt going after a call to ath_reset() Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c index 45c4ea57616b..72e24559ec4b 100644 --- a/drivers/net/wireless/ath/ath9k/beacon.c +++ b/drivers/net/wireless/ath/ath9k/beacon.c @@ -512,16 +512,13 @@ 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 */ nexttbtt = intval; - intval |= ATH9K_BEACON_RESET_TSF; + + if (sc->sc_flags & SC_OP_TSF_RESET) + intval |= ATH9K_BEACON_RESET_TSF; /* * In AP mode we enable the beacon timers and SWBA interrupts to