package/kernel/mac80211/patches/320-ath9k-fix-using-sta-drv_priv-before-initializing-it.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Tue, 2 Aug 2016 13:00:01 +0200
   3 Subject: [PATCH] ath9k: fix using sta->drv_priv before initializing it
   4
   5 A station pointer can be passed to the driver on tx, before it has been
   6 marked as associated. Since ath9k_sta_state was initializing the entry
   7 too late, it resulted in some spurious crashes.
   8
   9 Fixes: df3c6eb34da5 ("ath9k: Use sta_state() callback")
  10 Cc: stable@vger.kernel.org
  11 Signed-off-by: Felix Fietkau <nbd@nbd.name>
  12 ---
  13
  14 --- a/drivers/net/wireless/ath/ath9k/main.c
  15 +++ b/drivers/net/wireless/ath/ath9k/main.c
  16 @@ -1563,13 +1563,13 @@ static int ath9k_sta_state(struct ieee80
  17         struct ath_common *common = ath9k_hw_common(sc->sc_ah);
  18         int ret = 0;
  19
  20 -       if (old_state == IEEE80211_STA_AUTH &&
  21 -           new_state == IEEE80211_STA_ASSOC) {
  22 +       if (old_state == IEEE80211_STA_NOTEXIST &&
  23 +           new_state == IEEE80211_STA_NONE) {
  24                 ret = ath9k_sta_add(hw, vif, sta);
  25                 ath_dbg(common, CONFIG,
  26                         "Add station: %pM\n", sta->addr);
  27 -       } else if (old_state == IEEE80211_STA_ASSOC &&
  28 -                  new_state == IEEE80211_STA_AUTH) {
  29 +       } else if (old_state == IEEE80211_STA_NONE &&
  30 +                  new_state == IEEE80211_STA_NOTEXIST) {
  31                 ret = ath9k_sta_remove(hw, vif, sta);
  32                 ath_dbg(common, CONFIG,
  33                         "Remove station: %pM\n", sta->addr);