Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

Conflicts:

	drivers/net/wireless/iwlwifi/iwl4965-base.c

5 files changed, 70 insertions, 45 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2500usb.c b/drivers/net/wireless/rt2x00/rt2500usb.c
index 9851cefaabf..0462d6d35b8 100644
--- a/drivers/net/wireless/rt2x00/rt2500usb.c
+++ b/drivers/net/wireless/rt2x00/rt2500usb.c
@@ -138,11 +138,8 @@ static void rt2500usb_bbp_write(struct rt2x00_dev *rt2x00dev,
 	 * Wait until the BBP becomes ready.
 	 */
 	reg = rt2500usb_bbp_check(rt2x00dev);
-	if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
-		ERROR(rt2x00dev, "PHY_CSR8 register busy. Write failed.\n");
-		mutex_unlock(&rt2x00dev->usb_cache_mutex);
-		return;
-	}
+	if (rt2x00_get_field16(reg, PHY_CSR8_BUSY))
+		goto exit_fail;
 
 	/*
 	 * Write the data into the BBP.
@@ -155,6 +152,13 @@ static void rt2500usb_bbp_write(struct rt2x00_dev *rt2x00dev,
 	rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg);
 
 	mutex_unlock(&rt2x00dev->usb_cache_mutex);
+
+	return;
+
+exit_fail:
+	mutex_unlock(&rt2x00dev->usb_cache_mutex);
+
+	ERROR(rt2x00dev, "PHY_CSR8 register busy. Write failed.\n");
 }
 
 static void rt2500usb_bbp_read(struct rt2x00_dev *rt2x00dev,
@@ -168,10 +172,8 @@ static void rt2500usb_bbp_read(struct rt2x00_dev *rt2x00dev,
 	 * Wait until the BBP becomes ready.
 	 */
 	reg = rt2500usb_bbp_check(rt2x00dev);
-	if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
-		ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
-		return;
-	}
+	if (rt2x00_get_field16(reg, PHY_CSR8_BUSY))
+		goto exit_fail;
 
 	/*
 	 * Write the request into the BBP.
@@ -186,17 +188,21 @@ static void rt2500usb_bbp_read(struct rt2x00_dev *rt2x00dev,
 	 * Wait until the BBP becomes ready.
 	 */
 	reg = rt2500usb_bbp_check(rt2x00dev);
-	if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
-		ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
-		*value = 0xff;
-		mutex_unlock(&rt2x00dev->usb_cache_mutex);
-		return;
-	}
+	if (rt2x00_get_field16(reg, PHY_CSR8_BUSY))
+		goto exit_fail;
 
 	rt2500usb_register_read_lock(rt2x00dev, PHY_CSR7, &reg);
 	*value = rt2x00_get_field16(reg, PHY_CSR7_DATA);
 
 	mutex_unlock(&rt2x00dev->usb_cache_mutex);
+
+	return;
+
+exit_fail:
+	mutex_unlock(&rt2x00dev->usb_cache_mutex);
+
+	ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
+	*value = 0xff;
 }
 
 static void rt2500usb_rf_write(struct rt2x00_dev *rt2x00dev,
diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index 0da8f972a1b..52d8e968821 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -818,6 +818,7 @@ struct rt2x00_dev {
 	/*
 	 * Scheduled work.
 	 */
+	struct workqueue_struct *workqueue;
 	struct work_struct intf_work;
 	struct work_struct filter_work;
 
diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
index 9ea677320da..cc4fee105ed 100644
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -74,7 +74,7 @@ static void rt2x00lib_start_link_tuner(struct rt2x00_dev *rt2x00dev)
 
 	rt2x00lib_reset_link_tuner(rt2x00dev);
 
-	queue_delayed_work(rt2x00dev->hw->workqueue,
+	queue_delayed_work(rt2x00dev->workqueue,
 			   &rt2x00dev->link.work, LINK_TUNE_INTERVAL);
 }
 
@@ -138,14 +138,6 @@ void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev)
 		return;
 
 	/*
-	 * Stop all scheduled work.
-	 */
-	if (work_pending(&rt2x00dev->intf_work))
-		cancel_work_sync(&rt2x00dev->intf_work);
-	if (work_pending(&rt2x00dev->filter_work))
-		cancel_work_sync(&rt2x00dev->filter_work);
-
-	/*
 	 * Stop the TX queues.
 	 */
 	ieee80211_stop_queues(rt2x00dev->hw);
@@ -400,8 +392,8 @@ static void rt2x00lib_link_tuner(struct work_struct *work)
 	 * Increase tuner counter, and reschedule the next link tuner run.
 	 */
 	rt2x00dev->link.count++;
-	queue_delayed_work(rt2x00dev->hw->workqueue, &rt2x00dev->link.work,
-			   LINK_TUNE_INTERVAL);
+	queue_delayed_work(rt2x00dev->workqueue,
+			   &rt2x00dev->link.work, LINK_TUNE_INTERVAL);
 }
 
 static void rt2x00lib_packetfilter_scheduled(struct work_struct *work)
@@ -434,6 +426,15 @@ static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac,
 
 	spin_unlock(&intf->lock);
 
+	/*
+	 * It is possible the radio was disabled while the work had been
+	 * scheduled. If that happens we should return here immediately,
+	 * note that in the spinlock protected area above the delayed_flags
+	 * have been cleared correctly.
+	 */
+	if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+		return;
+
 	if (delayed_flags & DELAYED_UPDATE_BEACON) {
 		skb = ieee80211_beacon_get(rt2x00dev->hw, vif);
 		if (skb &&
@@ -442,7 +443,7 @@ static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac,
 	}
 
 	if (delayed_flags & DELAYED_CONFIG_ERP)
-		rt2x00lib_config_erp(rt2x00dev, intf, &intf->conf);
+		rt2x00lib_config_erp(rt2x00dev, intf, &conf);
 
 	if (delayed_flags & DELAYED_LED_ASSOC)
 		rt2x00leds_led_assoc(rt2x00dev, !!rt2x00dev->intf_associated);
@@ -488,7 +489,7 @@ void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev)
 						   rt2x00lib_beacondone_iter,
 						   rt2x00dev);
 
-	queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->intf_work);
+	queue_work(rt2x00dev->workqueue, &rt2x00dev->intf_work);
 }
 EXPORT_SYMBOL_GPL(rt2x00lib_beacondone);
 
@@ -1003,6 +1004,10 @@ int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev)
 	/*
 	 * Initialize configuration work.
 	 */
+	rt2x00dev->workqueue = create_singlethread_workqueue("rt2x00lib");
+	if (!rt2x00dev->workqueue)
+		goto exit;
+
 	INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled);
 	INIT_WORK(&rt2x00dev->filter_work, rt2x00lib_packetfilter_scheduled);
 	INIT_DELAYED_WORK(&rt2x00dev->link.work, rt2x00lib_link_tuner);
@@ -1063,6 +1068,13 @@ void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev)
 	rt2x00leds_unregister(rt2x00dev);
 
 	/*
+	 * Stop all queued work. Note that most tasks will already be halted
+	 * during rt2x00lib_disable_radio() and rt2x00lib_uninitialize().
+	 */
+	flush_workqueue(rt2x00dev->workqueue);
+	destroy_workqueue(rt2x00dev->workqueue);
+
+	/*
 	 * Free ieee80211_hw memory.
 	 */
 	rt2x00lib_remove_hw(rt2x00dev);
diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c
index c90992f613f..1253da89295 100644
--- a/drivers/net/wireless/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/rt2x00/rt2x00mac.c
@@ -431,7 +431,7 @@ void rt2x00mac_configure_filter(struct ieee80211_hw *hw,
 	if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags))
 		rt2x00dev->ops->lib->config_filter(rt2x00dev, *total_flags);
 	else
-		queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work);
+		queue_work(rt2x00dev->workqueue, &rt2x00dev->filter_work);
 }
 EXPORT_SYMBOL_GPL(rt2x00mac_configure_filter);
 
@@ -512,7 +512,7 @@ void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw,
 	memcpy(&intf->conf, bss_conf, sizeof(*bss_conf));
 	if (delayed) {
 		intf->delayed_flags |= delayed;
-		queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->intf_work);
+		queue_work(rt2x00dev->workqueue, &rt2x00dev->intf_work);
 	}
 	spin_unlock(&intf->lock);
 }
diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c
index fceefd730ab..675ff7900ee 100644
--- a/drivers/net/wireless/rt2x00/rt73usb.c
+++ b/drivers/net/wireless/rt2x00/rt73usb.c
@@ -134,11 +134,8 @@ static void rt73usb_bbp_write(struct rt2x00_dev *rt2x00dev,
 	 * Wait until the BBP becomes ready.
 	 */
 	reg = rt73usb_bbp_check(rt2x00dev);
-	if (rt2x00_get_field32(reg, PHY_CSR3_BUSY)) {
-		ERROR(rt2x00dev, "PHY_CSR3 register busy. Write failed.\n");
-		mutex_unlock(&rt2x00dev->usb_cache_mutex);
-		return;
-	}
+	if (rt2x00_get_field32(reg, PHY_CSR3_BUSY))
+		goto exit_fail;
 
 	/*
 	 * Write the data into the BBP.
@@ -151,6 +148,13 @@ static void rt73usb_bbp_write(struct rt2x00_dev *rt2x00dev,
 
 	rt73usb_register_write_lock(rt2x00dev, PHY_CSR3, reg);
 	mutex_unlock(&rt2x00dev->usb_cache_mutex);
+
+	return;
+
+exit_fail:
+	mutex_unlock(&rt2x00dev->usb_cache_mutex);
+
+	ERROR(rt2x00dev, "PHY_CSR3 register busy. Write failed.\n");
 }
 
 static void rt73usb_bbp_read(struct rt2x00_dev *rt2x00dev,
@@ -164,11 +168,8 @@ static void rt73usb_bbp_read(struct rt2x00_dev *rt2x00dev,
 	 * Wait until the BBP becomes ready.
 	 */
 	reg = rt73usb_bbp_check(rt2x00dev);
-	if (rt2x00_get_field32(reg, PHY_CSR3_BUSY)) {
-		ERROR(rt2x00dev, "PHY_CSR3 register busy. Read failed.\n");
-		mutex_unlock(&rt2x00dev->usb_cache_mutex);
-		return;
-	}
+	if (rt2x00_get_field32(reg, PHY_CSR3_BUSY))
+		goto exit_fail;
 
 	/*
 	 * Write the request into the BBP.
@@ -184,14 +185,19 @@ static void rt73usb_bbp_read(struct rt2x00_dev *rt2x00dev,
 	 * Wait until the BBP becomes ready.
 	 */
 	reg = rt73usb_bbp_check(rt2x00dev);
-	if (rt2x00_get_field32(reg, PHY_CSR3_BUSY)) {
-		ERROR(rt2x00dev, "PHY_CSR3 register busy. Read failed.\n");
-		*value = 0xff;
-		return;
-	}
+	if (rt2x00_get_field32(reg, PHY_CSR3_BUSY))
+		goto exit_fail;
 
 	*value = rt2x00_get_field32(reg, PHY_CSR3_VALUE);
 	mutex_unlock(&rt2x00dev->usb_cache_mutex);
+
+	return;
+
+exit_fail:
+	mutex_unlock(&rt2x00dev->usb_cache_mutex);
+
+	ERROR(rt2x00dev, "PHY_CSR3 register busy. Read failed.\n");
+	*value = 0xff;
 }
 
 static void rt73usb_rf_write(struct rt2x00_dev *rt2x00dev,