From: Felix Fietkau Date: Fri, 15 Jan 2010 23:12:21 +0000 (+0000) Subject: ath9k: add a workaround for the tx ack time issue triggered by the timing handling... X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=383cadf5d74d0da01023a5904cabcc10fd81be7d;p=openwrt%2Fstaging%2Faparcar.git ath9k: add a workaround for the tx ack time issue triggered by the timing handling cleanups in 2.4 ghz, calculating the ack timeout the way it is described in 802.11-2007 currently leads to tx timeouts set it to a minimum of what the initvals set (64 usec) until we know what is causing this SVN-Revision: 19156 --- diff --git a/package/mac80211/patches/580-ath9k_ack_timeout_workaround.patch b/package/mac80211/patches/580-ath9k_ack_timeout_workaround.patch new file mode 100644 index 0000000000..953c07af6f --- /dev/null +++ b/package/mac80211/patches/580-ath9k_ack_timeout_workaround.patch @@ -0,0 +1,14 @@ +--- a/drivers/net/wireless/ath/ath9k/hw.c ++++ b/drivers/net/wireless/ath/ath9k/hw.c +@@ -1229,6 +1229,11 @@ void ath9k_hw_init_global_settings(struc + /* As defined by IEEE 802.11-2007 17.3.8.6 */ + slottime = ah->slottime + 3 * ah->coverage_class; + acktimeout = slottime + sifstime; ++ ++ /* Workaround for a hw issue */ ++ if (conf->channel && conf->channel->band == IEEE80211_BAND_2GHZ) ++ acktimeout = max(64, acktimeout); ++ + ath9k_hw_setslottime(ah, slottime); + ath9k_hw_set_ack_timeout(ah, acktimeout); + ath9k_hw_set_cts_timeout(ah, acktimeout);