Merge branch 'wireless-next-2.6' of git://git.kernel.org/pub/scm/linux/kernel/git...

diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index f15fee76a4e24272efc3b04d5c16e6707641dc36..f00f5c744f48c2c43e67be8e1d5ad840f1b37ac2 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1217,6 +1217,17 @@ void ath9k_hw_init_global_settings(struct ath_hw *ah)
        /* As defined by IEEE 802.11-2007 17.3.8.6 */
        slottime = ah->slottime + 3 * ah->coverage_class;
        acktimeout = slottime + sifstime;
+
+       /*
+        * Workaround for early ACK timeouts, add an offset to match the
+        * initval's 64us ack timeout value.
+        * This was initially only meant to work around an issue with delayed
+        * BA frames in some implementations, but it has been found to fix ACK
+        * timeout issues in other cases as well.
+        */
+       if (conf->channel && conf->channel->band == IEEE80211_BAND_2GHZ)
+               acktimeout += 64 - sifstime - ah->slottime;
+
        ath9k_hw_setslottime(ah, slottime);
        ath9k_hw_set_ack_timeout(ah, acktimeout);
        ath9k_hw_set_cts_timeout(ah, acktimeout);