package/mac80211/patches/550-ath9k_ack_timeout_workaround.patch

   1 --- a/drivers/net/wireless/ath/ath9k/hw.c
   2 +++ b/drivers/net/wireless/ath/ath9k/hw.c
   3 @@ -1229,6 +1229,11 @@ void ath9k_hw_init_global_settings(struc
   4         /* As defined by IEEE 802.11-2007 17.3.8.6 */
   5         slottime = ah->slottime + 3 * ah->coverage_class;
   6         acktimeout = slottime + sifstime;
   7 +
   8 +       /* Workaround for a hw issue */
   9 +       if (conf->channel && conf->channel->band == IEEE80211_BAND_2GHZ)
  10 +               acktimeout = max(64, acktimeout);
  11 +
  12         ath9k_hw_setslottime(ah, slottime);
  13         ath9k_hw_set_ack_timeout(ah, acktimeout);
  14         ath9k_hw_set_cts_timeout(ah, acktimeout);