package/kernel/mac80211/patches/305-ath9k-Process-beacons-properly.patch

   1 From: Sujith Manoharan <c_manoha@qca.qualcomm.com>
   2 Date: Fri, 17 Oct 2014 07:40:10 +0530
   3 Subject: [PATCH] ath9k: Process beacons properly
   4
   5 When the current operating channel context has
   6 been marked as ATH_CHANCTX_STATE_FORCE_ACTIVE,
   7 do not process beacons that might be received,
   8 since we have to wait for the station to become
   9 authorized.
  10
  11 Also, since the cached TSF value will be zero
  12 initially do not rearm the timer in this
  13 case when a beacon is received, since it results
  14 in spurious values.
  15
  16 Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
  17 ---
  18
  19 --- a/drivers/net/wireless/ath/ath9k/channel.c
  20 +++ b/drivers/net/wireless/ath/ath9k/channel.c
  21 @@ -495,10 +495,15 @@ void ath_chanctx_event(struct ath_softc
  22                     sc->cur_chan == &sc->offchannel.chan)
  23                         break;
  24
  25 -               ath_chanctx_adjust_tbtt_delta(sc);
  26                 sc->sched.beacon_pending = false;
  27                 sc->sched.beacon_miss = 0;
  28
  29 +               if (sc->sched.state == ATH_CHANCTX_STATE_FORCE_ACTIVE ||
  30 +                   !sc->cur_chan->tsf_val)
  31 +                       break;
  32 +
  33 +               ath_chanctx_adjust_tbtt_delta(sc);
  34 +
  35                 /* TSF time might have been updated by the incoming beacon,
  36                  * need update the channel switch timer to reflect the change.
  37                  */