ath9k: wake up the hardware from full sleep when idle is turned off

The hardware needs a reset to recover from full sleep. Issue this reset
directly in the ath9k_config call that turns off idle, otherwise tx
remains dead until the first channel change after the idle state change

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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 2504ab0..798ea57 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1548,6 +1548,7 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
        struct ath_hw *ah = sc->sc_ah;
        struct ath_common *common = ath9k_hw_common(ah);
        struct ieee80211_conf *conf = &hw->conf;
+       bool reset_channel = false;
 
        ath9k_ps_wakeup(sc);
        mutex_lock(&sc->mutex);
@@ -1556,6 +1557,12 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
                sc->ps_idle = !!(conf->flags & IEEE80211_CONF_IDLE);
                if (sc->ps_idle)
                        ath_cancel_work(sc);
+               else
+                       /*
+                        * The chip needs a reset to properly wake up from
+                        * full sleep
+                        */
+                       reset_channel = ah->chip_fullsleep;
        }
 
        /*
@@ -1584,7 +1591,7 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
                }
        }
 
-       if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
+       if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) || reset_channel) {
                struct ieee80211_channel *curchan = hw->conf.channel;
                int pos = curchan->hw_value;
                int old_pos = -1;