ath9k: merge a pending patch for fixing tsf read and write

SVN-Revision: 24496

package/mac80211/patches/320-ath9k_pending_work.patch

@@ -56,3 +56,25 @@
  }
  
  /* This should work for all families including legacy */
+--- a/drivers/net/wireless/ath/ath9k/main.c
++++ b/drivers/net/wireless/ath/ath9k/main.c
+@@ -1940,7 +1940,9 @@ static u64 ath9k_get_tsf(struct ieee8021
+ 	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;
+@@ -1952,7 +1954,9 @@ static void ath9k_set_tsf(struct ieee802
+ 	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);
+ }
+