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--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -619,6 +619,7 @@ struct ath_softc {
u16 curtxpow;
bool ps_enabled;
bool ps_idle;
+ bool ps_fullsleep;
short nbcnvifs;
short nvifs;
unsigned long ps_usecount;
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -118,9 +118,10 @@ void ath9k_ps_restore(struct ath_softc *
if (--sc->ps_usecount != 0)
goto unlock;
- if (sc->ps_idle)
+ if (sc->ps_idle && (sc->ps_flags & PS_WAIT_FOR_TX_ACK)) {
mode = ATH9K_PM_FULL_SLEEP;
- else if (sc->ps_enabled &&
+ sc->ps_fullsleep = true;
+ } else if (sc->ps_enabled &&
!(sc->ps_flags & (PS_WAIT_FOR_BEACON |
PS_WAIT_FOR_CAB |
PS_WAIT_FOR_PSPOLL_DATA |
@@ -275,6 +276,7 @@ static bool ath_complete_reset(struct at
sc->config.txpowlimit, &sc->curtxpow);
ath9k_hw_set_interrupts(ah);
ath9k_hw_enable_interrupts(ah);
+ sc->ps_fullsleep = false;
if (!(sc->sc_flags & (SC_OP_OFFCHANNEL)) && start) {
if (sc->sc_flags & SC_OP_BEACONS)
@@ -332,7 +334,8 @@ static int ath_reset_internal(struct ath
hchan = ah->curchan;
}
- if (fastcc && !ath9k_hw_check_alive(ah))
+ if (fastcc && (sc->ps_fullsleep ||
+ !ath9k_hw_check_alive(ah)))
fastcc = false;
if (!ath_prepare_reset(sc, retry_tx, flush))
@@ -1173,6 +1176,13 @@ static void ath9k_tx(struct ieee80211_hw
}
}
+ /*
+ * Cannot tx while the hardware is in full sleep, it first needs a full
+ * chip reset to recover from that
+ */
+ if (unlikely(sc->sc_ah->power_mode == ATH9K_PM_FULL_SLEEP))
+ goto exit;
+
if (unlikely(sc->sc_ah->power_mode != ATH9K_PM_AWAKE)) {
/*
* We are using PS-Poll and mac80211 can request TX while in
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -1983,7 +1983,7 @@ static void ath_tx_complete(struct ath_s
skb_pull(skb, padsize);
}
- if (sc->ps_flags & PS_WAIT_FOR_TX_ACK) {
+ if ((sc->ps_flags & PS_WAIT_FOR_TX_ACK) && !txq->axq_depth) {
sc->ps_flags &= ~PS_WAIT_FOR_TX_ACK;
ath_dbg(common, ATH_DBG_PS,
"Going back to sleep after having received TX status (0x%lx)\n",
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