Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/gi…

…t/linville/wireless-next-2.6

Documentation/rfkill.txt

@@ -111,6 +111,8 @@ following attributes:
 
 	name: Name assigned by driver to this key (interface or driver name).
 	type: Driver type string ("wlan", "bluetooth", etc).
+	persistent: Whether the soft blocked state is initialised from
+	            non-volatile storage at startup.
 	state: Current state of the transmitter
 		0: RFKILL_STATE_SOFT_BLOCKED
 			transmitter is turned off by software

MAINTAINERS

@@ -940,7 +940,7 @@ M:	me@bobcopeland.com
 L:	linux-wireless@vger.kernel.org
 L:	ath5k-devel@lists.ath5k.org
 S:	Maintained
-F:	drivers/net/wireless/ath5k/
+F:	drivers/net/wireless/ath/ath5k/
 
 ATHEROS ATH9K WIRELESS DRIVER
 P:	Luis R. Rodriguez
@@ -956,15 +956,15 @@ M:	senthilkumar@atheros.com
 L:	linux-wireless@vger.kernel.org
 L:	ath9k-devel@lists.ath9k.org
 S:	Supported
-F:	drivers/net/wireless/ath9k/
+F:	drivers/net/wireless/ath/ath9k/
 
 ATHEROS AR9170 WIRELESS DRIVER
 P:	Christian Lamparter
 M:	chunkeey@web.de
 L:	linux-wireless@vger.kernel.org
 W:	http://wireless.kernel.org/en/users/Drivers/ar9170
 S:	Maintained
-F:	drivers/net/wireless/ar9170/
+F:	drivers/net/wireless/ath/ar9170/
 
 ATI_REMOTE2 DRIVER
 P:	Ville Syrjala

drivers/net/wireless/ath/ath5k/base.c

@@ -538,6 +538,7 @@ ath5k_pci_probe(struct pci_dev *pdev,
 	sc->iobase = mem; /* So we can unmap it on detach */
 	sc->cachelsz = csz * sizeof(u32); /* convert to bytes */
 	sc->opmode = NL80211_IFTYPE_STATION;
+	sc->bintval = 1000;
 	mutex_init(&sc->lock);
 	spin_lock_init(&sc->rxbuflock);
 	spin_lock_init(&sc->txbuflock);
@@ -686,6 +687,13 @@ ath5k_pci_resume(struct pci_dev *pdev)
 	if (err)
 		return err;
 
+	/*
+	 * Suspend/Resume resets the PCI configuration space, so we have to
+	 * re-disable the RETRY_TIMEOUT register (0x41) to keep
+	 * PCI Tx retries from interfering with C3 CPU state
+	 */
+	pci_write_config_byte(pdev, 0x41, 0);
+
 	err = request_irq(pdev->irq, ath5k_intr, IRQF_SHARED, "ath", sc);
 	if (err) {
 		ATH5K_ERR(sc, "request_irq failed\n");
@@ -2748,9 +2756,6 @@ static int ath5k_add_interface(struct ieee80211_hw *hw,
 		goto end;
 	}
 
-	/* Set to a reasonable value. Note that this will
-	 * be set to mac80211's value at ath5k_config(). */
-	sc->bintval = 1000;
 	ath5k_hw_set_lladdr(sc->ah, conf->mac_addr);
 
 	ret = 0;

drivers/net/wireless/ath/ath9k/main.c

@@ -1196,8 +1196,8 @@ void ath_radio_disable(struct ath_softc *sc)
 
 	ath9k_hw_phy_disable(ah);
 	ath9k_hw_configpcipowersave(ah, 1);
-	ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
 	ath9k_ps_restore(sc);
+	ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
 }
 
 /*******************/

drivers/net/wireless/ath/ath9k/pci.c

@@ -87,6 +87,7 @@ static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	struct ath_softc *sc;
 	struct ieee80211_hw *hw;
 	u8 csz;
+	u32 val;
 	int ret = 0;
 	struct ath_hw *ah;
 
@@ -133,6 +134,14 @@ static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 
 	pci_set_master(pdev);
 
+	/*
+	 * Disable the RETRY_TIMEOUT register (0x41) to keep
+	 * PCI Tx retries from interfering with C3 CPU state.
+	 */
+	pci_read_config_dword(pdev, 0x40, &val);
+	if ((val & 0x0000ff00) != 0)
+		pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
+
 	ret = pci_request_region(pdev, 0, "ath9k");
 	if (ret) {
 		dev_err(&pdev->dev, "PCI memory region reserve error\n");
@@ -239,12 +248,21 @@ static int ath_pci_resume(struct pci_dev *pdev)
 	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
 	struct ath_wiphy *aphy = hw->priv;
 	struct ath_softc *sc = aphy->sc;
+	u32 val;
 	int err;
 
 	err = pci_enable_device(pdev);
 	if (err)
 		return err;
 	pci_restore_state(pdev);
+	/*
+	 * Suspend/Resume resets the PCI configuration space, so we have to
+	 * re-disable the RETRY_TIMEOUT register (0x41) to keep
+	 * PCI Tx retries from interfering with C3 CPU state
+	 */
+	pci_read_config_dword(pdev, 0x40, &val);
+	if ((val & 0x0000ff00) != 0)
+		pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
 
 	/* Enable LED */
 	ath9k_hw_cfg_output(sc->sc_ah, ATH_LED_PIN,

drivers/net/wireless/ath/ath9k/recv.c

@@ -539,11 +539,14 @@ static void ath_rx_ps_beacon(struct ath_softc *sc, struct sk_buff *skb)
 	if (ath_beacon_dtim_pending_cab(skb)) {
 		/*
 		 * Remain awake waiting for buffered broadcast/multicast
-		 * frames.
+		 * frames. If the last broadcast/multicast frame is not
+		 * received properly, the next beacon frame will work as
+		 * a backup trigger for returning into NETWORK SLEEP state,
+		 * so we are waiting for it as well.
 		 */
 		DPRINTF(sc, ATH_DBG_PS, "Received DTIM beacon indicating "
 			"buffered broadcast/multicast frame(s)\n");
-		sc->sc_flags |= SC_OP_WAIT_FOR_CAB;
+		sc->sc_flags |= SC_OP_WAIT_FOR_CAB | SC_OP_WAIT_FOR_BEACON;
 		return;
 	}
 

drivers/net/wireless/iwmc3200wifi/iwm.h

@@ -288,6 +288,7 @@ struct iwm_priv {
 	u8 *eeprom;
 	struct timer_list watchdog;
 	struct work_struct reset_worker;
+	struct mutex mutex;
 	struct rfkill *rfkill;
 
 	char private[0] __attribute__((__aligned__(NETDEV_ALIGN)));
@@ -315,8 +316,11 @@ extern const struct iw_handler_def iwm_iw_handler_def;
 void *iwm_if_alloc(int sizeof_bus, struct device *dev,
 		   struct iwm_if_ops *if_ops);
 void iwm_if_free(struct iwm_priv *iwm);
+int iwm_if_add(struct iwm_priv *iwm);
+void iwm_if_remove(struct iwm_priv *iwm);
 int iwm_mode_to_nl80211_iftype(int mode);
 int iwm_priv_init(struct iwm_priv *iwm);
+void iwm_priv_deinit(struct iwm_priv *iwm);
 void iwm_reset(struct iwm_priv *iwm);
 void iwm_tx_credit_init_pools(struct iwm_priv *iwm,
 			      struct iwm_umac_notif_alive *alive);

drivers/net/wireless/iwmc3200wifi/main.c

@@ -112,6 +112,9 @@ static void iwm_statistics_request(struct work_struct *work)
 	iwm_send_umac_stats_req(iwm, 0);
 }
 
+int __iwm_up(struct iwm_priv *iwm);
+int __iwm_down(struct iwm_priv *iwm);
+
 static void iwm_reset_worker(struct work_struct *work)
 {
 	struct iwm_priv *iwm;
@@ -120,6 +123,19 @@ static void iwm_reset_worker(struct work_struct *work)
 
 	iwm = container_of(work, struct iwm_priv, reset_worker);
 
+	/*
+	 * XXX: The iwm->mutex is introduced purely for this reset work,
+	 * because the other users for iwm_up and iwm_down are only netdev
+	 * ndo_open and ndo_stop which are already protected by rtnl.
+	 * Please remove iwm->mutex together if iwm_reset_worker() is not
+	 * required in the future.
+	 */
+	if (!mutex_trylock(&iwm->mutex)) {
+		IWM_WARN(iwm, "We are in the middle of interface bringing "
+			 "UP/DOWN. Skip driver resetting.\n");
+		return;
+	}
+
 	if (iwm->umac_profile_active) {
 		profile = kmalloc(sizeof(struct iwm_umac_profile), GFP_KERNEL);
 		if (profile)
@@ -128,10 +144,10 @@ static void iwm_reset_worker(struct work_struct *work)
 			IWM_ERR(iwm, "Couldn't alloc memory for profile\n");
 	}
 
-	iwm_down(iwm);
+	__iwm_down(iwm);
 
 	while (retry++ < 3) {
-		ret = iwm_up(iwm);
+		ret = __iwm_up(iwm);
 		if (!ret)
 			break;
 
@@ -142,7 +158,7 @@ static void iwm_reset_worker(struct work_struct *work)
 		IWM_WARN(iwm, "iwm_up() failed: %d\n", ret);
 
 		kfree(profile);
-		return;
+		goto out;
 	}
 
 	if (profile) {
@@ -151,6 +167,9 @@ static void iwm_reset_worker(struct work_struct *work)
 		iwm_send_mlme_profile(iwm);
 		kfree(profile);
 	}
+
+ out:
+	mutex_unlock(&iwm->mutex);
 }
 
 static void iwm_watchdog(unsigned long data)
@@ -215,10 +234,21 @@ int iwm_priv_init(struct iwm_priv *iwm)
 	init_timer(&iwm->watchdog);
 	iwm->watchdog.function = iwm_watchdog;
 	iwm->watchdog.data = (unsigned long)iwm;
+	mutex_init(&iwm->mutex);
 
 	return 0;
 }
 
+void iwm_priv_deinit(struct iwm_priv *iwm)
+{
+	int i;
+
+	for (i = 0; i < IWM_TX_QUEUES; i++)
+		destroy_workqueue(iwm->txq[i].wq);
+
+	destroy_workqueue(iwm->rx_wq);
+}
+
 /*
  * We reset all the structures, and we reset the UMAC.
  * After calling this routine, you're expected to reload
@@ -466,7 +496,7 @@ void iwm_link_off(struct iwm_priv *iwm)
 
 	iwm_rx_free(iwm);
 
-	cancel_delayed_work(&iwm->stats_request);
+	cancel_delayed_work_sync(&iwm->stats_request);
 	memset(wstats, 0, sizeof(struct iw_statistics));
 	wstats->qual.updated = IW_QUAL_ALL_INVALID;
 
@@ -511,7 +541,7 @@ static int iwm_channels_init(struct iwm_priv *iwm)
 	return 0;
 }
 
-int iwm_up(struct iwm_priv *iwm)
+int __iwm_up(struct iwm_priv *iwm)
 {
 	int ret;
 	struct iwm_notif *notif_reboot, *notif_ack = NULL;
@@ -647,7 +677,18 @@ int iwm_up(struct iwm_priv *iwm)
 	return -EIO;
 }
 
-int iwm_down(struct iwm_priv *iwm)
+int iwm_up(struct iwm_priv *iwm)
+{
+	int ret;
+
+	mutex_lock(&iwm->mutex);
+	ret = __iwm_up(iwm);
+	mutex_unlock(&iwm->mutex);
+
+	return ret;
+}
+
+int __iwm_down(struct iwm_priv *iwm)
 {
 	int ret;
 
@@ -678,3 +719,14 @@ int iwm_down(struct iwm_priv *iwm)
 
 	return 0;
 }
+
+int iwm_down(struct iwm_priv *iwm)
+{
+	int ret;
+
+	mutex_lock(&iwm->mutex);
+	ret = __iwm_down(iwm);
+	mutex_unlock(&iwm->mutex);
+
+	return ret;
+}

drivers/net/wireless/iwmc3200wifi/netdev.c

@@ -114,32 +114,31 @@ void *iwm_if_alloc(int sizeof_bus, struct device *dev,
 	iwm = wdev_to_iwm(wdev);
 	iwm->bus_ops = if_ops;
 	iwm->wdev = wdev;
-	iwm_priv_init(iwm);
+
+	ret = iwm_priv_init(iwm);
+	if (ret) {
+		dev_err(dev, "failed to init iwm_priv\n");
+		goto out_wdev;
+	}
+
 	wdev->iftype = iwm_mode_to_nl80211_iftype(iwm->conf.mode);
 
-	ndev = alloc_netdev_mq(0, "wlan%d", ether_setup,
-			       IWM_TX_QUEUES);
+	ndev = alloc_netdev_mq(0, "wlan%d", ether_setup, IWM_TX_QUEUES);
 	if (!ndev) {
 		dev_err(dev, "no memory for network device instance\n");
-		goto out_wdev;
+		goto out_priv;
 	}
 
 	ndev->netdev_ops = &iwm_netdev_ops;
 	ndev->wireless_handlers = &iwm_iw_handler_def;
 	ndev->ieee80211_ptr = wdev;
 	SET_NETDEV_DEV(ndev, wiphy_dev(wdev->wiphy));
-	ret = register_netdev(ndev);
-	if (ret < 0) {
-		dev_err(dev, "Failed to register netdev: %d\n", ret);
-		goto out_ndev;
-	}
-
 	wdev->netdev = ndev;
 
 	return iwm;
 
- out_ndev:
-	free_netdev(ndev);
+ out_priv:
+	iwm_priv_deinit(iwm);
 
  out_wdev:
 	iwm_wdev_free(iwm);
@@ -148,15 +147,29 @@ void *iwm_if_alloc(int sizeof_bus, struct device *dev,
 
 void iwm_if_free(struct iwm_priv *iwm)
 {
-	int i;
-
 	if (!iwm_to_ndev(iwm))
 		return;
 
-	unregister_netdev(iwm_to_ndev(iwm));
 	free_netdev(iwm_to_ndev(iwm));
 	iwm_wdev_free(iwm);
-	destroy_workqueue(iwm->rx_wq);
-	for (i = 0; i < IWM_TX_QUEUES; i++)
-		destroy_workqueue(iwm->txq[i].wq);
+	iwm_priv_deinit(iwm);
+}
+
+int iwm_if_add(struct iwm_priv *iwm)
+{
+	struct net_device *ndev = iwm_to_ndev(iwm);
+	int ret;
+
+	ret = register_netdev(ndev);
+	if (ret < 0) {
+		dev_err(&ndev->dev, "Failed to register netdev: %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+void iwm_if_remove(struct iwm_priv *iwm)
+{
+	unregister_netdev(iwm_to_ndev(iwm));
 }