ath9k: Handle full sleep in ps_restore.

IDLE PS (Full Sleep) doesn't work when ifconfig up
is done during Idle unassociated state.
Fix this by restoring FULL SLEEP in ps_restore if CONF_IDLE
is set.

Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 7 insertions, 2 deletions

diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index bdbcc70df075..3f8a7e773d55 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -480,6 +480,7 @@ struct ath_softc {
         u8 nbcnvifs;
         u16 nvifs;
         bool ps_enabled;
+        bool ps_idle;
         unsigned long ps_usecount;
         enum ath9k_int imask;
 
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 6f3e71c5071e..e04835cb21b5 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -143,8 +143,10 @@ void ath9k_ps_restore(struct ath_softc *sc)
         if (--sc->ps_usecount != 0)
                 goto unlock;
 
-        if (sc->ps_enabled &&
-            !(sc->ps_flags & (PS_WAIT_FOR_BEACON |
+        if (sc->ps_idle)
+                ath9k_hw_setpower(sc->sc_ah, 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)))
@@ -1528,6 +1530,7 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
                 spin_unlock_bh(&sc->wiphy_lock);
 
                 if (enable_radio) {
+                        sc->ps_idle = false;
                         ath_radio_enable(sc, hw);
                         ath_print(common, ATH_DBG_CONFIG,
                                   "not-idle: enabling radio\n");
@@ -1635,6 +1638,7 @@ skip_chan_change:
 
         if (disable_radio) {
                 ath_print(common, ATH_DBG_CONFIG, "idle: disabling radio\n");
+                sc->ps_idle = true;
                 ath_radio_disable(sc, hw);
         }