1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c
index 03b066c7aa3c..ad4d7d11c3b8 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.c
@@ -2026,6 +2026,7 @@ static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
         int sta_id;
         int freed;
         u8 *qc = NULL;
+        unsigned long flags;
 
         if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
                 IWL_ERR(priv, "Read index for DMA queue txq_id (%d) index %d "
@@ -2050,10 +2051,10 @@ static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
                 return;
         }
 
+        spin_lock_irqsave(&priv->sta_lock, flags);
         if (txq->sched_retry) {
                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
                 struct iwl_ht_agg *agg = NULL;
-
                 WARN_ON(!qc);
 
                 agg = &priv->stations[sta_id].tid[tid].agg;
@@ -2110,6 +2111,8 @@ static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
                 iwlagn_txq_check_empty(priv, sta_id, tid, txq_id);
 
         iwl_check_abort_status(priv, tx_resp->frame_count, status);
+
+        spin_unlock_irqrestore(&priv->sta_lock, flags);
 }
 
 static int iwl4965_calc_rssi(struct iwl_priv *priv,