iwlwifi: fix ack health for WiFi/BT combo devices

Combo devices have TX statistics on different place, because
struct statistics_rx_bt and struct statistics_rx have different
size. User proper values on combo devices instead of random data.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 50be23b5fea207351e248e52c8f1521e65225eec..a3af656aab3d935f8950f0de388c3f45ab3ae193 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -1419,8 +1419,13 @@ bool iwl_good_ack_health(struct iwl_priv *priv, struct iwl_rx_packet *pkt)
        if (priv->_agn.agg_tids_count)
                return true;
 
-       cur = &pkt->u.stats.tx;
-       old = &priv->_agn.statistics.tx;
+       if (iwl_bt_statistics(priv)) {
+               cur = &pkt->u.stats_bt.tx;
+               old = &priv->_agn.statistics_bt.tx;
+       } else {
+               cur = &pkt->u.stats.tx;
+               old = &priv->_agn.statistics.tx;
+       }
 
        actual_delta = le32_to_cpu(cur->actual_ack_cnt) -
                       le32_to_cpu(old->actual_ack_cnt);