package/kernel/mac80211/patches/338-mac80211-fix-tim-recalculation-after-PS-response.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Fri, 26 Aug 2016 21:57:16 +0200
   3 Subject: [PATCH] mac80211: fix tim recalculation after PS response
   4
   5 Handle the case where the mac80211 intermediate queues are empty and the
   6 driver has buffered frames
   7
   8 Fixes: ba8c3d6f16a1 ("mac80211: add an intermediate software queue implementation")
   9 Signed-off-by: Felix Fietkau <nbd@nbd.name>
  10 ---
  11
  12 --- a/net/mac80211/sta_info.c
  13 +++ b/net/mac80211/sta_info.c
  14 @@ -1616,7 +1616,6 @@ ieee80211_sta_ps_deliver_response(struct
  15
  16                 sta_info_recalc_tim(sta);
  17         } else {
  18 -               unsigned long tids = sta->txq_buffered_tids & driver_release_tids;
  19                 int tid;
  20
  21                 /*
  22 @@ -1648,7 +1647,8 @@ ieee80211_sta_ps_deliver_response(struct
  23                 for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) {
  24                         struct txq_info *txqi = to_txq_info(sta->sta.txq[tid]);
  25
  26 -                       if (!(tids & BIT(tid)) || txqi->tin.backlog_packets)
  27 +                       if (!(driver_release_tids & BIT(tid)) ||
  28 +                           txqi->tin.backlog_packets)
  29                                 continue;
  30
  31                         sta_info_recalc_tim(sta);