ath9k: No need to abort Rx path when autosleep is enabled.

For chipsets supporting autosleep feature, there is no need to abort
Rx engine since they are capable of automatically going back to sleep
after receiving a packet.

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

1 files changed, 18 insertions, 11 deletions

diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c
index 0607df20e49..97cf83fa855 100644
--- a/drivers/net/wireless/ath9k/main.c
+++ b/drivers/net/wireless/ath9k/main.c
@@ -2325,26 +2325,33 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
         struct ath_wiphy *aphy = hw->priv;
         struct ath_softc *sc = aphy->sc;
         struct ieee80211_conf *conf = &hw->conf;
+        struct ath_hw *ah = sc->sc_ah;
 
         mutex_lock(&sc->mutex);
 
         if (changed & IEEE80211_CONF_CHANGE_PS) {
                 if (conf->flags & IEEE80211_CONF_PS) {
-                        if ((sc->imask & ATH9K_INT_TIM_TIMER) == 0) {
-                                sc->imask |= ATH9K_INT_TIM_TIMER;
-                                ath9k_hw_set_interrupts(sc->sc_ah,
-                                                sc->imask);
+                        if (!(ah->caps.hw_caps &
+                              ATH9K_HW_CAP_AUTOSLEEP)) {
+                                if ((sc->imask & ATH9K_INT_TIM_TIMER) == 0) {
+                                        sc->imask |= ATH9K_INT_TIM_TIMER;
+                                        ath9k_hw_set_interrupts(sc->sc_ah,
+                                                        sc->imask);
+                                }
+                                ath9k_hw_setrxabort(sc->sc_ah, 1);
                         }
-                        ath9k_hw_setrxabort(sc->sc_ah, 1);
                         ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_NETWORK_SLEEP);
                 } else {
                         ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
-                        ath9k_hw_setrxabort(sc->sc_ah, 0);
-                        sc->sc_flags &= ~SC_OP_WAIT_FOR_BEACON;
-                        if (sc->imask & ATH9K_INT_TIM_TIMER) {
-                                sc->imask &= ~ATH9K_INT_TIM_TIMER;
-                                ath9k_hw_set_interrupts(sc->sc_ah,
-                                                sc->imask);
+                        if (!(ah->caps.hw_caps &
+                              ATH9K_HW_CAP_AUTOSLEEP)) {
+                                ath9k_hw_setrxabort(sc->sc_ah, 0);
+                                sc->sc_flags &= ~SC_OP_WAIT_FOR_BEACON;
+                                if (sc->imask & ATH9K_INT_TIM_TIMER) {
+                                        sc->imask &= ~ATH9K_INT_TIM_TIMER;
+                                        ath9k_hw_set_interrupts(sc->sc_ah,
+                                                        sc->imask);
+                                }
                         }
                 }
         }