rt2x00: Fix race conditions in flag handling

Some of the flags should be accessed atomically to
prevent race conditions. The flags that are most important
are those that can change often and indicate the actual
state of the device, queue or queue entry.

The big flag rename was done to move all state flags to
the same naming type as the other rt2x00dev flags and
made sure all places where the flags were used were changed. ;)

Thanks to Stephen for most of the queue flags updates,
which fixes some of the most obvious consequences of the
race conditions. Among those the notorious:

rt2x00queue_write_tx_frame: Error - Arrived at non-free entry in the non-full queue 0.
rt2x00queue_write_tx_frame: Error - Arrived at non-free entry in the non-full queue 0.
rt2x00queue_write_tx_frame: Error - Arrived at non-free entry in the non-full queue 0.

Signed-off-by: Stephen Blackheath <tramp.enshrine.stephen@blacksapphire.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2400pci.c

@@ -1241,7 +1241,7 @@ static irqreturn_t rt2400pci_interrupt(int irq, void *dev_instance)
 	if (!reg)
 		return IRQ_NONE;
 
-	if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+	if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
 		return IRQ_HANDLED;
 
 	/*

drivers/net/wireless/rt2x00/rt2500pci.c

@@ -1377,7 +1377,7 @@ static irqreturn_t rt2500pci_interrupt(int irq, void *dev_instance)
 	if (!reg)
 		return IRQ_NONE;
 
-	if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+	if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
 		return IRQ_HANDLED;
 
 	/*

drivers/net/wireless/rt2x00/rt2500usb.c

@@ -1297,7 +1297,7 @@ static void rt2500usb_beacondone(struct urb *urb)
 	struct queue_entry *entry = (struct queue_entry *)urb->context;
 	struct queue_entry_priv_usb_bcn *bcn_priv = entry->priv_data;
 
-	if (!test_bit(DEVICE_ENABLED_RADIO, &entry->queue->rt2x00dev->flags))
+	if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &entry->queue->rt2x00dev->flags))
 		return;
 
 	/*

drivers/net/wireless/rt2x00/rt2x00.h

@@ -629,14 +629,14 @@ enum rt2x00_flags {
 	/*
 	 * Device state flags
 	 */
-	DEVICE_PRESENT,
-	DEVICE_REGISTERED_HW,
-	DEVICE_INITIALIZED,
-	DEVICE_STARTED,
-	DEVICE_STARTED_SUSPEND,
-	DEVICE_ENABLED_RADIO,
-	DEVICE_DISABLED_RADIO_HW,
-	DEVICE_DIRTY_CONFIG,
+	DEVICE_STATE_PRESENT,
+	DEVICE_STATE_REGISTERED_HW,
+	DEVICE_STATE_INITIALIZED,
+	DEVICE_STATE_STARTED,
+	DEVICE_STATE_STARTED_SUSPEND,
+	DEVICE_STATE_ENABLED_RADIO,
+	DEVICE_STATE_DISABLED_RADIO_HW,
+	DEVICE_STATE_DIRTY_CONFIG,
 
 	/*
 	 * Driver requirements

drivers/net/wireless/rt2x00/rt2x00config.c

@@ -121,7 +121,7 @@ void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev,
 	 * Antenna setup changes require the RX to be disabled,
 	 * else the changes will be ignored by the device.
 	 */
-	if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+	if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
 		rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF_LINK);
 
 	/*
@@ -136,7 +136,7 @@ void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev,
 	rt2x00dev->link.ant.active.rx = libconf.ant.rx;
 	rt2x00dev->link.ant.active.tx = libconf.ant.tx;
 
-	if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+	if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
 		rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON_LINK);
 }
 

drivers/net/wireless/rt2x00/rt2x00dev.c

@@ -34,7 +34,7 @@
  */
 void rt2x00lib_reset_link_tuner(struct rt2x00_dev *rt2x00dev)
 {
-	if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+	if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
 		return;
 
 	/*
@@ -94,8 +94,8 @@ int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev)
 	 * Don't enable the radio twice.
 	 * And check if the hardware button has been disabled.
 	 */
-	if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) ||
-	    test_bit(DEVICE_DISABLED_RADIO_HW, &rt2x00dev->flags))
+	if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags) ||
+	    test_bit(DEVICE_STATE_DISABLED_RADIO_HW, &rt2x00dev->flags))
 		return 0;
 
 	/*
@@ -117,7 +117,7 @@ int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev)
 	rt2x00leds_led_radio(rt2x00dev, true);
 	rt2x00led_led_activity(rt2x00dev, true);
 
-	__set_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags);
+	set_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags);
 
 	/*
 	 * Enable RX.
@@ -134,7 +134,7 @@ int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev)
 
 void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev)
 {
-	if (!__test_and_clear_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+	if (!test_and_clear_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
 		return;
 
 	/*
@@ -354,7 +354,7 @@ static void rt2x00lib_link_tuner(struct work_struct *work)
 	 * When the radio is shutting down we should
 	 * immediately cease all link tuning.
 	 */
-	if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+	if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
 		return;
 
 	/*
@@ -431,7 +431,7 @@ static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac,
 	 * note that in the spinlock protected area above the delayed_flags
 	 * have been cleared correctly.
 	 */
-	if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+	if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
 		return;
 
 	if (delayed_flags & DELAYED_UPDATE_BEACON)
@@ -484,7 +484,7 @@ static void rt2x00lib_beacondone_iter(void *data, u8 *mac,
 
 void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev)
 {
-	if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+	if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
 		return;
 
 	ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw,
@@ -572,7 +572,7 @@ void rt2x00lib_txdone(struct queue_entry *entry,
 
 	rt2x00dev->ops->lib->init_txentry(rt2x00dev, entry);
 
-	__clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
+	clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
 	rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE);
 
 	/*
@@ -888,7 +888,7 @@ static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev,
 
 static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev)
 {
-	if (test_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags))
+	if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags))
 		ieee80211_unregister_hw(rt2x00dev->hw);
 
 	if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) {
@@ -906,6 +906,9 @@ static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev)
 	struct hw_mode_spec *spec = &rt2x00dev->spec;
 	int status;
 
+	if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags))
+		return 0;
+
 	/*
 	 * Initialize HW modes.
 	 */
@@ -927,7 +930,7 @@ static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev)
 		return status;
 	}
 
-	__set_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags);
+	set_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags);
 
 	return 0;
 }
@@ -937,7 +940,7 @@ static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev)
  */
 static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev)
 {
-	if (!__test_and_clear_bit(DEVICE_INITIALIZED, &rt2x00dev->flags))
+	if (!test_and_clear_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags))
 		return;
 
 	/*
@@ -960,7 +963,7 @@ static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev)
 {
 	int status;
 
-	if (test_bit(DEVICE_INITIALIZED, &rt2x00dev->flags))
+	if (test_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags))
 		return 0;
 
 	/*
@@ -979,7 +982,7 @@ static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev)
 		return status;
 	}
 
-	__set_bit(DEVICE_INITIALIZED, &rt2x00dev->flags);
+	set_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags);
 
 	/*
 	 * Register the extra components.
@@ -993,7 +996,7 @@ int rt2x00lib_start(struct rt2x00_dev *rt2x00dev)
 {
 	int retval;
 
-	if (test_bit(DEVICE_STARTED, &rt2x00dev->flags))
+	if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags))
 		return 0;
 
 	/*
@@ -1024,15 +1027,15 @@ int rt2x00lib_start(struct rt2x00_dev *rt2x00dev)
 	rt2x00dev->intf_sta_count = 0;
 	rt2x00dev->intf_associated = 0;
 
-	__set_bit(DEVICE_STARTED, &rt2x00dev->flags);
-	__set_bit(DEVICE_DIRTY_CONFIG, &rt2x00dev->flags);
+	set_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags);
+	set_bit(DEVICE_STATE_DIRTY_CONFIG, &rt2x00dev->flags);
 
 	return 0;
 }
 
 void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev)
 {
-	if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags))
+	if (!test_and_clear_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags))
 		return;
 
 	/*
@@ -1044,8 +1047,6 @@ void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev)
 	rt2x00dev->intf_ap_count = 0;
 	rt2x00dev->intf_sta_count = 0;
 	rt2x00dev->intf_associated = 0;
-
-	__clear_bit(DEVICE_STARTED, &rt2x00dev->flags);
 }
 
 /*
@@ -1100,7 +1101,7 @@ int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev)
 	rt2x00rfkill_allocate(rt2x00dev);
 	rt2x00debug_register(rt2x00dev);
 
-	__set_bit(DEVICE_PRESENT, &rt2x00dev->flags);
+	set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);
 
 	return 0;
 
@@ -1113,7 +1114,7 @@ EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev);
 
 void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev)
 {
-	__clear_bit(DEVICE_PRESENT, &rt2x00dev->flags);
+	clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);
 
 	/*
 	 * Disable radio.
@@ -1158,14 +1159,15 @@ int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state)
 	int retval;
 
 	NOTICE(rt2x00dev, "Going to sleep.\n");
-	__clear_bit(DEVICE_PRESENT, &rt2x00dev->flags);
 
 	/*
 	 * Only continue if mac80211 has open interfaces.
 	 */
-	if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags))
+	if (!test_and_clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) ||
+	    !test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags))
 		goto exit;
-	__set_bit(DEVICE_STARTED_SUSPEND, &rt2x00dev->flags);
+
+	set_bit(DEVICE_STATE_STARTED_SUSPEND, &rt2x00dev->flags);
 
 	/*
 	 * Disable radio.
@@ -1237,7 +1239,7 @@ int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev)
 	/*
 	 * Only continue if mac80211 had open interfaces.
 	 */
-	if (!__test_and_clear_bit(DEVICE_STARTED_SUSPEND, &rt2x00dev->flags))
+	if (!test_and_clear_bit(DEVICE_STATE_STARTED_SUSPEND, &rt2x00dev->flags))
 		return 0;
 
 	/*
@@ -1264,7 +1266,7 @@ int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev)
 	/*
 	 * We are ready again to receive requests from mac80211.
 	 */
-	__set_bit(DEVICE_PRESENT, &rt2x00dev->flags);
+	set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);
 
 	/*
 	 * It is possible that during that mac80211 has attempted
@@ -1284,7 +1286,7 @@ int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev)
 	return 0;
 
 exit:
-	rt2x00lib_disable_radio(rt2x00dev);
+	rt2x00lib_stop(rt2x00dev);
 	rt2x00lib_uninitialize(rt2x00dev);
 	rt2x00debug_deregister(rt2x00dev);
 

drivers/net/wireless/rt2x00/rt2x00mac.c

@@ -117,7 +117,7 @@ int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 	 * Note that we can only stop the TX queues inside the TX path
 	 * due to possible race conditions in mac80211.
 	 */
-	if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags))
+	if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
 		goto exit_fail;
 
 	/*
@@ -175,7 +175,7 @@ int rt2x00mac_start(struct ieee80211_hw *hw)
 {
 	struct rt2x00_dev *rt2x00dev = hw->priv;
 
-	if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags))
+	if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
 		return 0;
 
 	return rt2x00lib_start(rt2x00dev);
@@ -186,7 +186,7 @@ void rt2x00mac_stop(struct ieee80211_hw *hw)
 {
 	struct rt2x00_dev *rt2x00dev = hw->priv;
 
-	if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags))
+	if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
 		return;
 
 	rt2x00lib_stop(rt2x00dev);
@@ -206,8 +206,8 @@ int rt2x00mac_add_interface(struct ieee80211_hw *hw,
 	 * Don't allow interfaces to be added
 	 * the device has disappeared.
 	 */
-	if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags) ||
-	    !test_bit(DEVICE_STARTED, &rt2x00dev->flags))
+	if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) ||
+	    !test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags))
 		return -ENODEV;
 
 	switch (conf->type) {
@@ -256,7 +256,7 @@ int rt2x00mac_add_interface(struct ieee80211_hw *hw,
 	 */
 	for (i = 0; i < queue->limit; i++) {
 		entry = &queue->entries[i];
-		if (!__test_and_set_bit(ENTRY_BCN_ASSIGNED, &entry->flags))
+		if (!test_and_set_bit(ENTRY_BCN_ASSIGNED, &entry->flags))
 			break;
 	}
 
@@ -310,7 +310,7 @@ void rt2x00mac_remove_interface(struct ieee80211_hw *hw,
 	 * either the device has disappeared or when
 	 * no interface is present.
 	 */
-	if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags) ||
+	if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) ||
 	    (conf->type == IEEE80211_IF_TYPE_AP && !rt2x00dev->intf_ap_count) ||
 	    (conf->type != IEEE80211_IF_TYPE_AP && !rt2x00dev->intf_sta_count))
 		return;
@@ -324,7 +324,7 @@ void rt2x00mac_remove_interface(struct ieee80211_hw *hw,
 	 * Release beacon entry so it is available for
 	 * new interfaces again.
 	 */
-	__clear_bit(ENTRY_BCN_ASSIGNED, &intf->beacon->flags);
+	clear_bit(ENTRY_BCN_ASSIGNED, &intf->beacon->flags);
 
 	/*
 	 * Make sure the bssid and mac address registers
@@ -344,14 +344,14 @@ int rt2x00mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
 	 * Mac80211 might be calling this function while we are trying
 	 * to remove the device or perhaps suspending it.
 	 */
-	if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags))
+	if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
 		return 0;
 
 	/*
 	 * Check if we need to disable the radio,
 	 * if this is not the case, at least the RX must be disabled.
 	 */
-	if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) {
+	if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) {
 		if (!conf->radio_enabled)
 			rt2x00lib_disable_radio(rt2x00dev);
 		else
@@ -366,14 +366,14 @@ int rt2x00mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
 	 * initialized.
 	 */
 	force_reconfig =
-	    __test_and_clear_bit(DEVICE_DIRTY_CONFIG, &rt2x00dev->flags);
+	    test_and_clear_bit(DEVICE_STATE_DIRTY_CONFIG, &rt2x00dev->flags);
 
 	rt2x00lib_config(rt2x00dev, conf, force_reconfig);
 
 	/*
 	 * Reenable RX only if the radio should be on.
 	 */
-	if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+	if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
 		rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
 	else if (conf->radio_enabled)
 		return rt2x00lib_enable_radio(rt2x00dev);
@@ -395,7 +395,7 @@ int rt2x00mac_config_interface(struct ieee80211_hw *hw,
 	 * Mac80211 might be calling this function while we are trying
 	 * to remove the device or perhaps suspending it.
 	 */
-	if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags))
+	if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
 		return 0;
 
 	spin_lock(&intf->lock);

drivers/net/wireless/rt2x00/rt2x00queue.c

@@ -356,7 +356,7 @@ int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb)
 	if (unlikely(rt2x00queue_full(queue)))
 		return -EINVAL;
 
-	if (__test_and_set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) {
+	if (test_and_set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) {
 		ERROR(queue->rt2x00dev,
 		      "Arrived at non-free entry in the non-full queue %d.\n"
 		      "Please file bug report to %s.\n",
@@ -396,7 +396,7 @@ int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb)
 	 * the frame to mac80211 because the skb->cb has now been tainted.
 	 */
 	if (unlikely(queue->rt2x00dev->ops->lib->write_tx_data(entry))) {
-		__clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
+		clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
 		dev_kfree_skb_any(entry->skb);
 		entry->skb = NULL;
 		return 0;
@@ -405,7 +405,7 @@ int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb)
 	if (test_bit(DRIVER_REQUIRE_DMA, &queue->rt2x00dev->flags))
 		rt2x00queue_map_txskb(queue->rt2x00dev, skb);
 
-	__set_bit(ENTRY_DATA_PENDING, &entry->flags);
+	set_bit(ENTRY_DATA_PENDING, &entry->flags);
 
 	rt2x00queue_index_inc(queue, Q_INDEX);
 	rt2x00queue_write_tx_descriptor(entry, &txdesc);

drivers/net/wireless/rt2x00/rt2x00rfkill.c

@@ -41,16 +41,16 @@ static int rt2x00rfkill_toggle_radio(void *data, enum rfkill_state state)
 	/*
 	 * Only continue if there are enabled interfaces.
 	 */
-	if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags))
+	if (!test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags))
 		return 0;
 
 	if (state == RFKILL_STATE_UNBLOCKED) {
 		INFO(rt2x00dev, "Hardware button pressed, enabling radio.\n");
-		__clear_bit(DEVICE_DISABLED_RADIO_HW, &rt2x00dev->flags);
+		clear_bit(DEVICE_STATE_DISABLED_RADIO_HW, &rt2x00dev->flags);
 		retval = rt2x00lib_enable_radio(rt2x00dev);
 	} else if (state == RFKILL_STATE_SOFT_BLOCKED) {
 		INFO(rt2x00dev, "Hardware button pressed, disabling radio.\n");
-		__set_bit(DEVICE_DISABLED_RADIO_HW, &rt2x00dev->flags);
+		set_bit(DEVICE_STATE_DISABLED_RADIO_HW, &rt2x00dev->flags);
 		rt2x00lib_disable_radio(rt2x00dev);
 	} else {
 		WARNING(rt2x00dev, "Received unexpected rfkill state %d.\n",

drivers/net/wireless/rt2x00/rt2x00usb.c

@@ -163,7 +163,7 @@ static void rt2x00usb_interrupt_txdone(struct urb *urb)
 	struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
 	struct txdone_entry_desc txdesc;
 
-	if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) ||
+	if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags) ||
 	    !test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags))
 		return;
 
@@ -232,7 +232,7 @@ static inline void rt2x00usb_kick_tx_entry(struct queue_entry *entry)
 {
 	struct queue_entry_priv_usb *entry_priv = entry->priv_data;
 
-	if (__test_and_clear_bit(ENTRY_DATA_PENDING, &entry->flags))
+	if (test_and_clear_bit(ENTRY_DATA_PENDING, &entry->flags))
 		usb_submit_urb(entry_priv->urb, GFP_ATOMIC);
 }
 
@@ -283,7 +283,7 @@ static void rt2x00usb_interrupt_rxdone(struct urb *urb)
 	struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
 	u8 rxd[32];
 
-	if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) ||
+	if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags) ||
 	    !test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags))
 		return;
 
@@ -293,7 +293,7 @@ static void rt2x00usb_interrupt_rxdone(struct urb *urb)
 	 * a problem.
 	 */
 	if (urb->actual_length < entry->queue->desc_size || urb->status) {
-		__set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
+		set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
 		usb_submit_urb(urb, GFP_ATOMIC);
 		return;
 	}
@@ -361,7 +361,7 @@ void rt2x00usb_init_rxentry(struct rt2x00_dev *rt2x00dev,
 			  entry->skb->data, entry->skb->len,
 			  rt2x00usb_interrupt_rxdone, entry);
 
-	__set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
+	set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
 	usb_submit_urb(entry_priv->urb, GFP_ATOMIC);
 }
 EXPORT_SYMBOL_GPL(rt2x00usb_init_rxentry);

drivers/net/wireless/rt2x00/rt61pci.c

@@ -2121,7 +2121,7 @@ static irqreturn_t rt61pci_interrupt(int irq, void *dev_instance)
 	if (!reg && !reg_mcu)
 		return IRQ_NONE;
 
-	if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+	if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
 		return IRQ_HANDLED;
 
 	/*