openwrt/package/mac80211/patches/560-ath9k_fix_radio_stop.patch

--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -124,14 +124,14 @@ void ath9k_ps_restore(struct ath_softc *
 		 !(sc->ps_flags & (PS_WAIT_FOR_BEACON |
 			      PS_WAIT_FOR_CAB |
 			      PS_WAIT_FOR_PSPOLL_DATA |
-			      PS_WAIT_FOR_TX_ACK)))
+			      PS_WAIT_FOR_TX_ACK))) {
 		mode = ATH9K_PM_NETWORK_SLEEP;
-	else
-		goto unlock;
 
-	spin_lock(&common->cc_lock);
-	ath_hw_cycle_counters_update(common);
-	spin_unlock(&common->cc_lock);
+		spin_lock(&common->cc_lock);
+		ath_hw_cycle_counters_update(common);
+		spin_unlock(&common->cc_lock);
+	} else
+		goto unlock;
 
 	ath9k_hw_setpower(sc->sc_ah, mode);
 
@@ -880,82 +880,6 @@ chip_reset:
 #undef SCHED_INTR
 }
 
-static void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw)
-{
-	struct ath_hw *ah = sc->sc_ah;
-	struct ath_common *common = ath9k_hw_common(ah);
-	struct ieee80211_channel *channel = hw->conf.channel;
-	int r;
-
-	ath9k_ps_wakeup(sc);
-	spin_lock_bh(&sc->sc_pcu_lock);
-	atomic_set(&ah->intr_ref_cnt, -1);
-
-	ath9k_hw_configpcipowersave(ah, false);
-
-	if (!ah->curchan)
-		ah->curchan = ath9k_cmn_get_curchannel(sc->hw, ah);
-
-	r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
-	if (r) {
-		ath_err(common,
-			"Unable to reset channel (%u MHz), reset status %d\n",
-			channel->center_freq, r);
-	}
-
-	ath_complete_reset(sc, true);
-
-	/* Enable LED */
-	ath9k_hw_cfg_output(ah, ah->led_pin,
-			    AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
-	ath9k_hw_set_gpio(ah, ah->led_pin, 0);
-
-	spin_unlock_bh(&sc->sc_pcu_lock);
-
-	ath9k_ps_restore(sc);
-}
-
-void ath_radio_disable(struct ath_softc *sc, struct ieee80211_hw *hw)
-{
-	struct ath_hw *ah = sc->sc_ah;
-	struct ieee80211_channel *channel = hw->conf.channel;
-	int r;
-
-	ath9k_ps_wakeup(sc);
-
-	ath_cancel_work(sc);
-
-	spin_lock_bh(&sc->sc_pcu_lock);
-
-	/*
-	 * Keep the LED on when the radio is disabled
-	 * during idle unassociated state.
-	 */
-	if (!sc->ps_idle) {
-		ath9k_hw_set_gpio(ah, ah->led_pin, 1);
-		ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
-	}
-
-	ath_prepare_reset(sc, false, true);
-
-	if (!ah->curchan)
-		ah->curchan = ath9k_cmn_get_curchannel(hw, ah);
-
-	r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
-	if (r) {
-		ath_err(ath9k_hw_common(sc->sc_ah),
-			"Unable to reset channel (%u MHz), reset status %d\n",
-			channel->center_freq, r);
-	}
-
-	ath9k_hw_phy_disable(ah);
-
-	ath9k_hw_configpcipowersave(ah, true);
-
-	spin_unlock_bh(&sc->sc_pcu_lock);
-	ath9k_ps_restore(sc);
-}
-
 static int ath_reset(struct ath_softc *sc, bool retry_tx)
 {
 	int r;
@@ -1091,6 +1015,9 @@ static int ath9k_start(struct ieee80211_
 	 * and then setup of the interrupt mask.
 	 */
 	spin_lock_bh(&sc->sc_pcu_lock);
+
+	atomic_set(&ah->intr_ref_cnt, -1);
+
 	r = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
 	if (r) {
 		ath_err(common,
@@ -1129,6 +1056,16 @@ static int ath9k_start(struct ieee80211_
 		goto mutex_unlock;
 	}
 
+	ath9k_hw_cfg_output(ah, ah->led_pin,
+			    AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
+	ath9k_hw_set_gpio(ah, ah->led_pin, 0);
+
+	/*
+	 * Reset key cache to sane defaults (all entries cleared) instead of
+	 * semi-random values after suspend/resume.
+	 */
+	ath9k_cmn_init_crypto(sc->sc_ah);
+
 	spin_unlock_bh(&sc->sc_pcu_lock);
 
 	if ((ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE) &&
@@ -1260,9 +1197,6 @@ static void ath9k_stop(struct ieee80211_
 		sc->rx.frag = NULL;
 	}
 
-	/* disable HAL and put h/w to sleep */
-	ath9k_hw_disable(ah);
-
 	spin_unlock_bh(&sc->sc_pcu_lock);
 
 	/* we can now sync irq and kill any running tasklets, since we already
@@ -1271,10 +1205,27 @@ static void ath9k_stop(struct ieee80211_
 	tasklet_kill(&sc->intr_tq);
 	tasklet_kill(&sc->bcon_tasklet);
 
-	ath9k_ps_restore(sc);
-
 	sc->ps_idle = true;
-	ath_radio_disable(sc, hw);
+
+	spin_lock_bh(&sc->sc_pcu_lock);
+
+	ath9k_hw_set_gpio(ah, ah->led_pin, 1);
+	ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
+
+	ath_prepare_reset(sc, false, true);
+
+	if (!ah->curchan)
+		ah->curchan = ath9k_cmn_get_curchannel(hw, ah);
+
+	ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
+	ath9k_hw_phy_disable(ah);
+	ath9k_hw_disable(ah);
+
+	ath9k_hw_configpcipowersave(ah, true);
+
+	spin_unlock_bh(&sc->sc_pcu_lock);
+
+	ath9k_ps_restore(sc);
 
 	sc->sc_flags |= SC_OP_INVALID;
 
@@ -1598,8 +1549,8 @@ static int ath9k_config(struct ieee80211
 	struct ath_hw *ah = sc->sc_ah;
 	struct ath_common *common = ath9k_hw_common(ah);
 	struct ieee80211_conf *conf = &hw->conf;
-	bool disable_radio = false;
 
+	ath9k_ps_wakeup(sc);
 	mutex_lock(&sc->mutex);
 
 	/*
@@ -1608,16 +1559,8 @@ static int ath9k_config(struct ieee80211
 	 * of the changes. Likewise we must only disable the radio towards
 	 * the end.
 	 */
-	if (changed & IEEE80211_CONF_CHANGE_IDLE) {
+	if (changed & IEEE80211_CONF_CHANGE_IDLE)
 		sc->ps_idle = !!(conf->flags & IEEE80211_CONF_IDLE);
-		if (!sc->ps_idle) {
-			ath_radio_enable(sc, hw);
-			ath_dbg(common, ATH_DBG_CONFIG,
-				"not-idle: enabling radio\n");
-		} else {
-			disable_radio = true;
-		}
-	}
 
 	/*
 	 * We just prepare to enable PS. We have to wait until our AP has
@@ -1742,19 +1685,13 @@ static int ath9k_config(struct ieee80211
 		ath_dbg(common, ATH_DBG_CONFIG,
 			"Set power: %d\n", conf->power_level);
 		sc->config.txpowlimit = 2 * conf->power_level;
-		ath9k_ps_wakeup(sc);
 		ath9k_cmn_update_txpow(ah, sc->curtxpow,
 				       sc->config.txpowlimit, &sc->curtxpow);
-		ath9k_ps_restore(sc);
 		conf->cur_power_level = sc->curtxpow / 2;
 	}
 
-	if (disable_radio) {
-		ath_dbg(common, ATH_DBG_CONFIG, "idle: disabling radio\n");
-		ath_radio_disable(sc, hw);
-	}
-
 	mutex_unlock(&sc->mutex);
+	ath9k_ps_restore(sc);
 
 	return 0;
 }
--- a/drivers/net/wireless/ath/ath9k/pci.c
+++ b/drivers/net/wireless/ath/ath9k/pci.c
@@ -302,26 +302,12 @@ static void ath_pci_remove(struct pci_de
 
 static int ath_pci_suspend(struct device *device)
 {
-	struct pci_dev *pdev = to_pci_dev(device);
-	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
-	struct ath_softc *sc = hw->priv;
-
-	ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1);
-
-	/* The device has to be moved to FULLSLEEP forcibly.
-	 * Otherwise the chip never moved to full sleep,
-	 * when no interface is up.
-	 */
-	ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_FULL_SLEEP);
-
 	return 0;
 }
 
 static int ath_pci_resume(struct device *device)
 {
 	struct pci_dev *pdev = to_pci_dev(device);
-	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
-	struct ath_softc *sc = hw->priv;
 	u32 val;
 
 	/*
@@ -333,22 +319,6 @@ static int ath_pci_resume(struct device 
 	if ((val & 0x0000ff00) != 0)
 		pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
 
-	ath9k_ps_wakeup(sc);
-	/* Enable LED */
-	ath9k_hw_cfg_output(sc->sc_ah, sc->sc_ah->led_pin,
-			    AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
-	ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 0);
-
-	  /*
-	   * Reset key cache to sane defaults (all entries cleared) instead of
-	   * semi-random values after suspend/resume.
-	   */
-	ath9k_cmn_init_crypto(sc->sc_ah);
-	ath9k_ps_restore(sc);
-
-	sc->ps_idle = true;
-	ath_radio_disable(sc, hw);
-
 	return 0;
 }