From: Assaf Krauss <assaf.krauss@xxxxxxxxx>
This patch is a W/A for the TSF sync issue, in which the ucode's timestamp
is constantly a little behind incoming beacons' timestamps (in IBSS cells).
The W/A simply stops the driver from declaring it has a reliable TSF value.
Signed-off-by: Assaf Krauss <assaf.krauss@xxxxxxxxx>
Signed-off-by: Tomas Winkler <tomas.winkler@xxxxxxxxx>
Signed-off-by: Zhu Yi <yi.zhu@xxxxxxxxx>
---
drivers/net/wireless/iwlwifi/iwl-agn.c | 2 +-
drivers/net/wireless/iwlwifi/iwl-rx.c | 5 ++++-
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 676fc0a..1badcf3 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -3578,7 +3578,7 @@ static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *sk
priv->assoc_id = 0;
timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
- priv->timestamp = le64_to_cpu(timestamp) + (priv->beacon_int * 1000);
+ priv->timestamp = le64_to_cpu(timestamp);
IWL_DEBUG_MAC80211("leave\n");
spin_unlock_irqrestore(&priv->lock, flags);
diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c
index b92a580..faad4d3 100644
--- a/drivers/net/wireless/iwlwifi/iwl-rx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-rx.c
@@ -1068,7 +1068,10 @@ void iwl_rx_reply_rx(struct iwl_priv *priv,
rx_status.rate_idx -= IWL_FIRST_OFDM_RATE;
rx_status.flag = 0;
- rx_status.flag |= RX_FLAG_TSFT;
+
+ /* TSF isn't reliable. In order to allow smooth user experience,
+ * this W/A doesn't propagate it to the mac80211 */
+ /*rx_status.flag |= RX_FLAG_TSFT;*/
if ((unlikely(rx_start->cfg_phy_cnt > 20))) {
IWL_DEBUG_DROP("dsp size out of range [0,20]: %d/n",
--
1.5.3.6
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