ath10k: fix possible deadlock

It was possible to have a deadlock due to inverted
locking of local->iflist_mtx and
ath10k->conf_mutex.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

drivers/net/wireless/ath/ath10k/mac.c

@@ -2581,8 +2581,9 @@ static int ath10k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 	ar_iter.ar = ar;
 
 	mutex_lock(&ar->conf_mutex);
-	ieee80211_iterate_active_interfaces(hw, IEEE80211_IFACE_ITER_RESUME_ALL,
-					    ath10k_set_rts_iter, &ar_iter);
+	ieee80211_iterate_active_interfaces_atomic(
+		hw, IEEE80211_IFACE_ITER_RESUME_ALL,
+		ath10k_set_rts_iter, &ar_iter);
 	mutex_unlock(&ar->conf_mutex);
 
 	return ar_iter.ret;
@@ -2622,8 +2623,9 @@ static int ath10k_set_frag_threshold(struct ieee80211_hw *hw, u32 value)
 	ar_iter.ar = ar;
 
 	mutex_lock(&ar->conf_mutex);
-	ieee80211_iterate_active_interfaces(hw, IEEE80211_IFACE_ITER_RESUME_ALL,
-					    ath10k_set_frag_iter, &ar_iter);
+	ieee80211_iterate_active_interfaces_atomic(
+		hw, IEEE80211_IFACE_ITER_RESUME_ALL,
+		ath10k_set_frag_iter, &ar_iter);
 	mutex_unlock(&ar->conf_mutex);
 
 	return ar_iter.ret;