commit: c1afdaff90538ef085b756454f12b29575411214
From: Felix Fietkau <[email protected]>
Date: Sat, 10 Mar 2012 13:57:04 +0100
Subject: ath9k: fix going to full-sleep on PS idle

The check for PS_WAIT_FOR_TX_ACK was inverted, the hardware should only go
to full sleep if no tx is pending.

Reported-by: Sujith Manoharan <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
Cc: [email protected]
Signed-off-by: John W. Linville <[email protected]>
---
 drivers/net/wireless/ath/ath9k/main.c |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/main.c 
b/drivers/net/wireless/ath/ath9k/main.c
index 33403a9..4a99010 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -118,13 +118,15 @@ void ath9k_ps_restore(struct ath_softc *sc)
        if (--sc->ps_usecount != 0)
                goto unlock;
 
-       if (sc->ps_idle && (sc->ps_flags & PS_WAIT_FOR_TX_ACK))
+       if (sc->ps_flags & PS_WAIT_FOR_TX_ACK)
+               goto unlock;
+
+       if (sc->ps_idle)
                mode = ATH9K_PM_FULL_SLEEP;
        else if (sc->ps_enabled &&
                 !(sc->ps_flags & (PS_WAIT_FOR_BEACON |
                              PS_WAIT_FOR_CAB |
-                             PS_WAIT_FOR_PSPOLL_DATA |
-                             PS_WAIT_FOR_TX_ACK)))
+                             PS_WAIT_FOR_PSPOLL_DATA)))
                mode = ATH9K_PM_NETWORK_SLEEP;
        else
                goto unlock;
-- 
1.7.3.4
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