From: Sujith Manoharan <Sujith.Manoharan@atheros.com>
Date: Fri, 10 Dec 2010 05:57:06 +0000 (+0530)
Subject: ath9k: Use power save wrappers for TSF get/set
X-Git-Tag: v3.12-rc1~7851^2~14^2~3^2~163
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9abbfb27dd96361187bb3872b2c349a76f5e09e9;p=kernel%2Fkernel-generic.git

ath9k: Use power save wrappers for TSF get/set

The HW has to be awake when accessing registers.

Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index ca35aaa..5b4ef81 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1987,7 +1987,9 @@ static u64 ath9k_get_tsf(struct ieee80211_hw *hw)
 	struct ath_softc *sc = aphy->sc;
 
 	mutex_lock(&sc->mutex);
+	ath9k_ps_wakeup(sc);
 	tsf = ath9k_hw_gettsf64(sc->sc_ah);
+	ath9k_ps_restore(sc);
 	mutex_unlock(&sc->mutex);
 
 	return tsf;
@@ -1999,7 +2001,9 @@ static void ath9k_set_tsf(struct ieee80211_hw *hw, u64 tsf)
 	struct ath_softc *sc = aphy->sc;
 
 	mutex_lock(&sc->mutex);
+	ath9k_ps_wakeup(sc);
 	ath9k_hw_settsf64(sc->sc_ah, tsf);
+	ath9k_ps_restore(sc);
 	mutex_unlock(&sc->mutex);
 }