package/mac80211/patches/570-ath9k_fix_adhoc_beacons.patch

   1 --- a/drivers/net/wireless/ath/ath9k/beacon.c
   2 +++ b/drivers/net/wireless/ath/ath9k/beacon.c
   3 @@ -351,9 +351,7 @@ void ath_beacon_tasklet(unsigned long da
   4         struct ath_buf *bf = NULL;
   5         struct ieee80211_vif *vif;
   6         int slot;
   7 -       u32 bfaddr, bc = 0, tsftu;
   8 -       u64 tsf;
   9 -       u16 intval;
  10 +       u32 bfaddr, bc = 0;
  11
  12         /*
  13          * Check if the previous beacon has gone out.  If
  14 @@ -388,17 +386,27 @@ void ath_beacon_tasklet(unsigned long da
  15          * on the tsf to safeguard against missing an swba.
  16          */
  17
  18 -       intval = cur_conf->beacon_interval ? : ATH_DEFAULT_BINTVAL;
  19
  20 -       tsf = ath9k_hw_gettsf64(ah);
  21 -       tsf += TU_TO_USEC(ah->config.sw_beacon_response_time);
  22 -       tsftu = TSF_TO_TU((tsf * ATH_BCBUF) >>32, tsf * ATH_BCBUF);
  23 -       slot = (tsftu % (intval * ATH_BCBUF)) / intval;
  24 -       vif = sc->beacon.bslot[slot];
  25 +       if (ah->opmode == NL80211_IFTYPE_AP) {
  26 +               u16 intval;
  27 +               u32 tsftu;
  28 +               u64 tsf;
  29 +
  30 +               intval = cur_conf->beacon_interval ? : ATH_DEFAULT_BINTVAL;
  31 +               tsf = ath9k_hw_gettsf64(ah);
  32 +               tsf += TU_TO_USEC(ah->config.sw_beacon_response_time);
  33 +               tsftu = TSF_TO_TU((tsf * ATH_BCBUF) >>32, tsf * ATH_BCBUF);
  34 +               slot = (tsftu % (intval * ATH_BCBUF)) / intval;
  35 +               vif = sc->beacon.bslot[slot];
  36 +
  37 +               ath_dbg(common, ATH_DBG_BEACON,
  38 +                       "slot %d [tsf %llu tsftu %u intval %u] vif %p\n",
  39 +                       slot, tsf, tsftu / ATH_BCBUF, intval, vif);
  40 +       } else {
  41 +               slot = 0;
  42 +               vif = sc->beacon.bslot[slot];
  43 +       }
  44
  45 -       ath_dbg(common, ATH_DBG_BEACON,
  46 -               "slot %d [tsf %llu tsftu %u intval %u] vif %p\n",
  47 -               slot, tsf, tsftu / ATH_BCBUF, intval, vif);
  48
  49         bfaddr = 0;
  50         if (vif) {