iwlwifi: implement txq invalidate byte count table

This is required to overcome a bug in 5000 HW byte count table.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-tx.c b/drivers/net/wireless/iwlwifi/iwl-tx.c
index b2b2ed29602a..224bcec21e5b 100644
--- a/drivers/net/wireless/iwlwifi/iwl-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-tx.c
@@ -1080,8 +1080,11 @@ int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
                 tx_info = &txq->txb[txq->q.read_ptr];
                 ieee80211_tx_status_irqsafe(priv->hw, tx_info->skb[0]);
                 tx_info->skb[0] = NULL;
-                iwl_hw_txq_free_tfd(priv, txq);
 
+                if (priv->cfg->ops->lib->txq_inval_byte_cnt_tbl)
+                        priv->cfg->ops->lib->txq_inval_byte_cnt_tbl(priv, txq);
+
+                iwl_hw_txq_free_tfd(priv, txq);
                 nfreed++;
         }
         return nfreed;