package/kernel/mac80211/patches/901-wlcore-don-t-switch-channels-on-disconnected-STA-vif.patch

   1 From 4101e8dc540d19f1f6c24930629149191786e4cd Mon Sep 17 00:00:00 2001
   2 From: Arik Nemtsov <arik@wizery.com>
   3 Date: Mon, 9 Sep 2013 16:48:59 +0300
   4 Subject: [PATCH 27/75] wlcore: don't switch channels on disconnected STA vifs
   5
   6 Sending the FW a channel switch command on a disconnected vif may result
   7 in a beacon loss event. Avoid this edge case.
   8
   9 Signed-off-by: Arik Nemtsov <arik@wizery.com>
  10 ---
  11  drivers/net/wireless/ti/wlcore/main.c | 7 +++++++
  12  1 file changed, 7 insertions(+)
  13
  14 --- a/drivers/net/wireless/ti/wlcore/main.c
  15 +++ b/drivers/net/wireless/ti/wlcore/main.c
  16 @@ -5148,6 +5148,10 @@ static void wl12xx_op_channel_switch(str
  17         if (unlikely(wl->state == WLCORE_STATE_OFF)) {
  18                 wl12xx_for_each_wlvif_sta(wl, wlvif) {
  19                         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
  20 +
  21 +                       if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
  22 +                               continue;
  23 +
  24                         ieee80211_chswitch_done(vif, false);
  25                 }
  26                 goto out;
  27 @@ -5163,6 +5167,9 @@ static void wl12xx_op_channel_switch(str
  28         wl12xx_for_each_wlvif_sta(wl, wlvif) {
  29                 unsigned long delay_usec;
  30
  31 +               if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
  32 +                       continue;
  33 +
  34                 ret = wl->ops->channel_switch(wl, wlvif, ch_switch);
  35                 if (ret)
  36                         goto out_sleep;