iwlwifi: jiffies based tx queues watchdog

This patch replace monitor/recover timer by watchdog based on time
stamp. New code allow to discover hangs more precisely.

Timeout values are currently doubled monitoring period values of
previous timer. This have to be tuned based of firmware timing
capabilities.

Tested on 3945, 4965, 5300, 6300.

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>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c
index 6788ceb37686..3f1e5f1bf847 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.c
@@ -2198,6 +2198,7 @@ static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
                 return;
         }
 
+        txq->time_stamp = jiffies;
         info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb);
         memset(&info->status, 0, sizeof(info->status));
 
@@ -2554,7 +2555,6 @@ static struct iwl_lib_ops iwl4965_lib = {
                 .bt_stats_read = iwl_ucode_bt_stats_read,
                 .reply_tx_error = iwl_reply_tx_error_read,
         },
-        .recover_from_tx_stall = iwl_bg_monitor_recover,
         .check_plcp_health = iwl_good_plcp_health,
 };
 
@@ -2609,7 +2609,7 @@ static struct iwl_base_params iwl4965_base_params = {
         .led_compensation = 61,
         .chain_noise_num_beacons = IWL4965_CAL_NUM_BEACONS,
         .plcp_delta_threshold = IWL_MAX_PLCP_ERR_THRESHOLD_DEF,
-        .monitor_recover_period = IWL_DEF_MONITORING_PERIOD,
+        .wd_timeout = IWL_DEF_WD_TIMEOUT,
         .temperature_kelvin = true,
         .max_event_log_size = 512,
         .tx_power_by_driver = true,