From 196fb860ceb6b937cbe608ea3ea0209bd4edf3b2 Mon Sep 17 00:00:00 2001
From: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Date: Mon, 4 Jun 2012 20:24:13 +0530
Subject: [PATCH] ath9k: Resync beacons properly
After a chip reset, the beacon timers have to re-programmed
correctly for a station in associated state. Use the PS flags
to ensure that this is done after a TSF sync happens, otherwise
the driver ends up using incorrect values for TBTT/DTIM in
powersave mode.
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
drivers/net/wireless/ath/ath9k/main.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 88f7ad106e056..c0f478b0a9a27 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -210,6 +210,7 @@ static bool ath_complete_reset(struct ath_softc *sc, bool start)
{
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
+ unsigned long flags;
if (ath_startrecv(sc) != 0) {
ath_err(common, "Unable to restart recv logic\n");
@@ -224,9 +225,18 @@ static bool ath_complete_reset(struct ath_softc *sc, bool start)
ath9k_hw_enable_interrupts(ah);
if (!(sc->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) && start) {
- if (test_bit(SC_OP_BEACONS, &sc->sc_flags))
- ath_set_beacon(sc);
+ if (!test_bit(SC_OP_BEACONS, &sc->sc_flags))
+ goto work;
+
+ ath_set_beacon(sc);
+ if (ah->opmode == NL80211_IFTYPE_STATION &&
+ test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags)) {
+ spin_lock_irqsave(&sc->sc_pm_lock, flags);
+ sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON;
+ spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
+ }
+ work:
ath_restart_work(sc);
}
--
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