package/kernel/mac80211/patches/321-mac80211-fix-broken-AP-mode-handling-of-powersave-cl.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Thu, 3 Nov 2016 10:47:21 +0100
   3 Subject: [PATCH] mac80211: fix broken AP mode handling of powersave clients
   4
   5 Commit c68df2e7be0c ("mac80211: allow using AP_LINK_PS with
   6 mac80211-generated TIM IE") introduced a logic error, where
   7 __sta_info_recalc_tim turns into a no-op if local->ops->set_tim is not
   8 set. This prevents the beacon TIM bit from being set for all drivers
   9 that do not implement this op (almost all of them), thus thoroughly
  10 essential AP mode powersave functionality.
  11
  12 Cc: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
  13 Fixes: c68df2e7be0c ("mac80211: allow using AP_LINK_PS with mac80211-generated TIM IE")
  14 Signed-off-by: Felix Fietkau <nbd@nbd.name>
  15 ---
  16
  17 --- a/net/mac80211/sta_info.c
  18 +++ b/net/mac80211/sta_info.c
  19 @@ -688,7 +688,7 @@ static void __sta_info_recalc_tim(struct
  20         }
  21
  22         /* No need to do anything if the driver does all */
  23 -       if (!local->ops->set_tim)
  24 +       if (local->ops->set_tim)
  25                 return;
  26
  27         if (sta->dead)