From: Doru Gucea <gucea.doru@xxxxxxxxx> Each time we receive a beacon we need to adjust the hardware timers for next DTIM and next TBTT. Before this commit, the Power Save behaviour was incorrect. The scenario was: - STA receives a beacon from AP with TIM unset; - mac80211 layers puts the chip to sleep; - chip is woken up by mac80211's software timer reponsible for beacon miss after 7 * beacon_interval period. Normally the chip should sleep at most DTIM period. This commit configures hardware timers for waking up the chip correctly. More details on the wiki: https://github.com/doru91/linux-stable/wiki/Single-Interface-Power-Save Signed-off-by: Doru Gucea <gucea.doru@xxxxxxxxx> --- drivers/net/wireless/ath/ath9k/main.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index c27143b..d2934e1 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -1749,6 +1749,10 @@ static void ath9k_bss_info_changed(struct ieee80211_hw *hw, ath9k_ps_wakeup(sc); mutex_lock(&sc->mutex); + /* adjust beacon timers */ + if (changed && BSS_CHANGED_BEACON_INFO) + ath9k_htc_beacon_config(priv, vif); + if (changed & BSS_CHANGED_ASSOC) { ath_dbg(common, CONFIG, "BSSID %pM Changed ASSOC %d\n", bss_conf->bssid, bss_conf->assoc); -- 1.9.1
