Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem

25 files changed, 30 insertions, 71 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1251.h b/drivers/net/wireless/wl12xx/wl1251.h
index 6b942a2..e113d4c 100644
--- a/drivers/net/wireless/wl12xx/wl1251.h
+++ b/drivers/net/wireless/wl12xx/wl1251.h
@@ -4,8 +4,6 @@
  * Copyright (c) 1998-2007 Texas Instruments Incorporated
  * Copyright (C) 2008-2009 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
@@ -274,6 +272,8 @@ struct wl1251 {
 	int irq;
 	bool use_eeprom;
 
+	spinlock_t wl_lock;
+
 	enum wl1251_state state;
 	struct mutex mutex;
 
@@ -401,7 +401,8 @@ void wl1251_disable_interrupts(struct wl1251 *wl);
 
 #define WL1251_DEFAULT_POWER_LEVEL 20
 
-#define WL1251_TX_QUEUE_MAX_LENGTH 20
+#define WL1251_TX_QUEUE_LOW_WATERMARK  10
+#define WL1251_TX_QUEUE_HIGH_WATERMARK 25
 
 #define WL1251_DEFAULT_BEACON_INT 100
 #define WL1251_DEFAULT_DTIM_PERIOD 1
diff --git a/drivers/net/wireless/wl12xx/wl1251_acx.h b/drivers/net/wireless/wl12xx/wl1251_acx.h
index a8845b8..c7cc5c1 100644
--- a/drivers/net/wireless/wl12xx/wl1251_acx.h
+++ b/drivers/net/wireless/wl12xx/wl1251_acx.h
@@ -4,8 +4,6 @@
  * Copyright (c) 1998-2007 Texas Instruments Incorporated
  * Copyright (C) 2008 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
diff --git a/drivers/net/wireless/wl12xx/wl1251_boot.c b/drivers/net/wireless/wl12xx/wl1251_boot.c
index 5e65f47..468b47b 100644
--- a/drivers/net/wireless/wl12xx/wl1251_boot.c
+++ b/drivers/net/wireless/wl12xx/wl1251_boot.c
@@ -3,8 +3,6 @@
  *
  * Copyright (C) 2008 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
diff --git a/drivers/net/wireless/wl12xx/wl1251_boot.h b/drivers/net/wireless/wl12xx/wl1251_boot.h
index 9006369..7661bc5 100644
--- a/drivers/net/wireless/wl12xx/wl1251_boot.h
+++ b/drivers/net/wireless/wl12xx/wl1251_boot.h
@@ -3,8 +3,6 @@
  *
  * Copyright (C) 2008 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
diff --git a/drivers/net/wireless/wl12xx/wl1251_cmd.h b/drivers/net/wireless/wl12xx/wl1251_cmd.h
index 60d7e52..e5c74c6 100644
--- a/drivers/net/wireless/wl12xx/wl1251_cmd.h
+++ b/drivers/net/wireless/wl12xx/wl1251_cmd.h
@@ -4,8 +4,6 @@
  * Copyright (c) 1998-2007 Texas Instruments Incorporated
  * Copyright (C) 2008 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
diff --git a/drivers/net/wireless/wl12xx/wl1251_debugfs.c b/drivers/net/wireless/wl12xx/wl1251_debugfs.c
index 5e4465a..6ffe4cd 100644
--- a/drivers/net/wireless/wl12xx/wl1251_debugfs.c
+++ b/drivers/net/wireless/wl12xx/wl1251_debugfs.c
@@ -3,8 +3,6 @@
  *
  * Copyright (C) 2009 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
diff --git a/drivers/net/wireless/wl12xx/wl1251_debugfs.h b/drivers/net/wireless/wl12xx/wl1251_debugfs.h
index 6dc3d08..b3417c0 100644
--- a/drivers/net/wireless/wl12xx/wl1251_debugfs.h
+++ b/drivers/net/wireless/wl12xx/wl1251_debugfs.h
@@ -3,8 +3,6 @@
  *
  * Copyright (C) 2009 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
diff --git a/drivers/net/wireless/wl12xx/wl1251_event.c b/drivers/net/wireless/wl12xx/wl1251_event.c
index e093a1c..5422355 100644
--- a/drivers/net/wireless/wl12xx/wl1251_event.c
+++ b/drivers/net/wireless/wl12xx/wl1251_event.c
@@ -4,8 +4,6 @@
  * Copyright (c) 1998-2007 Texas Instruments Incorporated
  * Copyright (C) 2008 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
@@ -36,9 +34,7 @@ static int wl1251_event_scan_complete(struct wl1251 *wl,
 		     mbox->scheduled_scan_channels);
 
 	if (wl->scanning) {
-		mutex_unlock(&wl->mutex);
 		ieee80211_scan_completed(wl->hw, false);
-		mutex_lock(&wl->mutex);
 		wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan completed");
 		wl->scanning = false;
 	}
diff --git a/drivers/net/wireless/wl12xx/wl1251_event.h b/drivers/net/wireless/wl12xx/wl1251_event.h
index ec45647..30eb5d1 100644
--- a/drivers/net/wireless/wl12xx/wl1251_event.h
+++ b/drivers/net/wireless/wl12xx/wl1251_event.h
@@ -4,8 +4,6 @@
  * Copyright (c) 1998-2007 Texas Instruments Incorporated
  * Copyright (C) 2008 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
diff --git a/drivers/net/wireless/wl12xx/wl1251_init.c b/drivers/net/wireless/wl12xx/wl1251_init.c
index b538bdd..c5daec0 100644
--- a/drivers/net/wireless/wl12xx/wl1251_init.c
+++ b/drivers/net/wireless/wl12xx/wl1251_init.c
@@ -3,8 +3,6 @@
  *
  * Copyright (C) 2009 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
diff --git a/drivers/net/wireless/wl12xx/wl1251_init.h b/drivers/net/wireless/wl12xx/wl1251_init.h
index 269cefb..543f175 100644
--- a/drivers/net/wireless/wl12xx/wl1251_init.h
+++ b/drivers/net/wireless/wl12xx/wl1251_init.h
@@ -3,8 +3,6 @@
  *
  * Copyright (C) 2009 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
diff --git a/drivers/net/wireless/wl12xx/wl1251_io.c b/drivers/net/wireless/wl12xx/wl1251_io.c
index f1c232e..ad6ca68 100644
--- a/drivers/net/wireless/wl12xx/wl1251_io.c
+++ b/drivers/net/wireless/wl12xx/wl1251_io.c
@@ -3,8 +3,6 @@
  *
  * Copyright (C) 2008 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
diff --git a/drivers/net/wireless/wl12xx/wl1251_main.c b/drivers/net/wireless/wl12xx/wl1251_main.c
index c81e95b4..faf221c 100644
--- a/drivers/net/wireless/wl12xx/wl1251_main.c
+++ b/drivers/net/wireless/wl12xx/wl1251_main.c
@@ -3,8 +3,6 @@
  *
  * Copyright (C) 2008-2009 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
@@ -377,6 +375,7 @@ out:
 static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 {
 	struct wl1251 *wl = hw->priv;
+	unsigned long flags;
 
 	skb_queue_tail(&wl->tx_queue, skb);
 
@@ -391,16 +390,13 @@ static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 	 * The workqueue is slow to process the tx_queue and we need stop
 	 * the queue here, otherwise the queue will get too long.
 	 */
-	if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_MAX_LENGTH) {
+	if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) {
 		wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
-		ieee80211_stop_queues(wl->hw);
 
-		/*
-		 * FIXME: this is racy, the variable is not properly
-		 * protected. Maybe fix this by removing the stupid
-		 * variable altogether and checking the real queue state?
-		 */
+		spin_lock_irqsave(&wl->wl_lock, flags);
+		ieee80211_stop_queues(wl->hw);
 		wl->tx_queue_stopped = true;
+		spin_unlock_irqrestore(&wl->wl_lock, flags);
 	}
 
 	return NETDEV_TX_OK;
@@ -469,9 +465,7 @@ static void wl1251_op_stop(struct ieee80211_hw *hw)
 	WARN_ON(wl->state != WL1251_STATE_ON);
 
 	if (wl->scanning) {
-		mutex_unlock(&wl->mutex);
 		ieee80211_scan_completed(wl->hw, true);
-		mutex_lock(&wl->mutex);
 		wl->scanning = false;
 	}
 
@@ -1437,5 +1431,5 @@ EXPORT_SYMBOL_GPL(wl1251_free_hw);
 
 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
 MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
+MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
 MODULE_FIRMWARE(WL1251_FW_NAME);
diff --git a/drivers/net/wireless/wl12xx/wl1251_ps.c b/drivers/net/wireless/wl12xx/wl1251_ps.c
index b55cb2b..0b997bd 100644
--- a/drivers/net/wireless/wl12xx/wl1251_ps.c
+++ b/drivers/net/wireless/wl12xx/wl1251_ps.c
@@ -3,8 +3,6 @@
  *
  * Copyright (C) 2008 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
diff --git a/drivers/net/wireless/wl12xx/wl1251_ps.h b/drivers/net/wireless/wl12xx/wl1251_ps.h
index c688ac5..e5db81f 100644
--- a/drivers/net/wireless/wl12xx/wl1251_ps.h
+++ b/drivers/net/wireless/wl12xx/wl1251_ps.h
@@ -1,14 +1,9 @@
-#ifndef __WL1251_PS_H__
-#define __WL1251_PS_H__
-
 /*
  * This file is part of wl1251
  *
  * Copyright (c) 1998-2007 Texas Instruments Incorporated
  * Copyright (C) 2008 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
@@ -25,6 +20,9 @@
  *
  */
 
+#ifndef __WL1251_PS_H__
+#define __WL1251_PS_H__
+
 #include "wl1251.h"
 #include "wl1251_acx.h"
 
diff --git a/drivers/net/wireless/wl12xx/wl1251_reg.h b/drivers/net/wireless/wl12xx/wl1251_reg.h
index d16edd9..a580901 100644
--- a/drivers/net/wireless/wl12xx/wl1251_reg.h
+++ b/drivers/net/wireless/wl12xx/wl1251_reg.h
@@ -4,8 +4,6 @@
  * Copyright (c) 1998-2007 Texas Instruments Incorporated
  * Copyright (C) 2008 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
diff --git a/drivers/net/wireless/wl12xx/wl1251_rx.c b/drivers/net/wireless/wl12xx/wl1251_rx.c
index 1b6294b..2576459 100644
--- a/drivers/net/wireless/wl12xx/wl1251_rx.c
+++ b/drivers/net/wireless/wl12xx/wl1251_rx.c
@@ -4,8 +4,6 @@
  * Copyright (c) 1998-2007 Texas Instruments Incorporated
  * Copyright (C) 2008 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
diff --git a/drivers/net/wireless/wl12xx/wl1251_rx.h b/drivers/net/wireless/wl12xx/wl1251_rx.h
index da4e534..4448f63 100644
--- a/drivers/net/wireless/wl12xx/wl1251_rx.h
+++ b/drivers/net/wireless/wl12xx/wl1251_rx.h
@@ -4,8 +4,6 @@
  * Copyright (c) 1998-2007 Texas Instruments Incorporated
  * Copyright (C) 2008 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
diff --git a/drivers/net/wireless/wl12xx/wl1251_sdio.c b/drivers/net/wireless/wl12xx/wl1251_sdio.c
index b901b61..c0b68b0 100644
--- a/drivers/net/wireless/wl12xx/wl1251_sdio.c
+++ b/drivers/net/wireless/wl12xx/wl1251_sdio.c
@@ -339,4 +339,4 @@ module_init(wl1251_sdio_init);
 module_exit(wl1251_sdio_exit);
 
 MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
+MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
diff --git a/drivers/net/wireless/wl12xx/wl1251_spi.c b/drivers/net/wireless/wl12xx/wl1251_spi.c
index 27fdfaa..334ded9 100644
--- a/drivers/net/wireless/wl12xx/wl1251_spi.c
+++ b/drivers/net/wireless/wl12xx/wl1251_spi.c
@@ -3,8 +3,6 @@
  *
  * Copyright (C) 2008 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
@@ -344,5 +342,5 @@ module_init(wl1251_spi_init);
 module_exit(wl1251_spi_exit);
 
 MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
+MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
 MODULE_ALIAS("spi:wl1251");
diff --git a/drivers/net/wireless/wl12xx/wl1251_spi.h b/drivers/net/wireless/wl12xx/wl1251_spi.h
index 2e273a9..7dcf3cf 100644
--- a/drivers/net/wireless/wl12xx/wl1251_spi.h
+++ b/drivers/net/wireless/wl12xx/wl1251_spi.h
@@ -4,8 +4,6 @@
  * Copyright (c) 1998-2007 Texas Instruments Incorporated
  * Copyright (C) 2008 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
diff --git a/drivers/net/wireless/wl12xx/wl1251_tx.c b/drivers/net/wireless/wl12xx/wl1251_tx.c
index 6634b3e..388492a 100644
--- a/drivers/net/wireless/wl12xx/wl1251_tx.c
+++ b/drivers/net/wireless/wl12xx/wl1251_tx.c
@@ -4,8 +4,6 @@
  * Copyright (c) 1998-2007 Texas Instruments Incorporated
  * Copyright (C) 2008 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
@@ -322,11 +320,6 @@ void wl1251_tx_work(struct work_struct *work)
 
 		ret = wl1251_tx_frame(wl, skb);
 		if (ret == -EBUSY) {
-			/* firmware buffer is full, stop queues */
-			wl1251_debug(DEBUG_TX, "tx_work: fw buffer full, "
-				     "stop queues");
-			ieee80211_stop_queues(wl->hw);
-			wl->tx_queue_stopped = true;
 			skb_queue_head(&wl->tx_queue, skb);
 			goto out;
 		} else if (ret < 0) {
@@ -449,6 +442,7 @@ void wl1251_tx_complete(struct wl1251 *wl)
 {
 	int i, result_index, num_complete = 0;
 	struct tx_result result[FW_TX_CMPLT_BLOCK_SIZE], *result_ptr;
+	unsigned long flags;
 
 	if (unlikely(wl->state != WL1251_STATE_ON))
 		return;
@@ -477,6 +471,20 @@ void wl1251_tx_complete(struct wl1251 *wl)
 		}
 	}
 
+	if (wl->tx_queue_stopped
+	    &&
+	    skb_queue_len(&wl->tx_queue) <= WL1251_TX_QUEUE_LOW_WATERMARK){
+
+		/* firmware buffer has space, restart queues */
+		wl1251_debug(DEBUG_TX, "tx_complete: waking queues");
+		spin_lock_irqsave(&wl->wl_lock, flags);
+		ieee80211_wake_queues(wl->hw);
+		wl->tx_queue_stopped = false;
+		spin_unlock_irqrestore(&wl->wl_lock, flags);
+		ieee80211_queue_work(wl->hw, &wl->tx_work);
+
+	}
+
 	/* Every completed frame needs to be acknowledged */
 	if (num_complete) {
 		/*
diff --git a/drivers/net/wireless/wl12xx/wl1251_tx.h b/drivers/net/wireless/wl12xx/wl1251_tx.h
index f40eeb3..96011e7 100644
--- a/drivers/net/wireless/wl12xx/wl1251_tx.h
+++ b/drivers/net/wireless/wl12xx/wl1251_tx.h
@@ -4,8 +4,6 @@
  * Copyright (c) 1998-2007 Texas Instruments Incorporated
  * Copyright (C) 2008 Nokia Corporation
  *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
diff --git a/drivers/net/wireless/wl12xx/wl1271_main.c b/drivers/net/wireless/wl12xx/wl1271_main.c
index 30194c0..8e55cf8 100644
--- a/drivers/net/wireless/wl12xx/wl1271_main.c
+++ b/drivers/net/wireless/wl12xx/wl1271_main.c
@@ -948,9 +948,7 @@ static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
 		ieee80211_enable_dyn_ps(wl->vif);
 
 	if (wl->scan.state != WL1271_SCAN_STATE_IDLE) {
-		mutex_unlock(&wl->mutex);
 		ieee80211_scan_completed(wl->hw, true);
-		mutex_lock(&wl->mutex);
 		wl->scan.state = WL1271_SCAN_STATE_IDLE;
 		kfree(wl->scan.scanned_ch);
 		wl->scan.scanned_ch = NULL;
diff --git a/drivers/net/wireless/wl12xx/wl1271_scan.c b/drivers/net/wireless/wl12xx/wl1271_scan.c
index 30dc100..e4950c8 100644
--- a/drivers/net/wireless/wl12xx/wl1271_scan.c
+++ b/drivers/net/wireless/wl12xx/wl1271_scan.c
@@ -215,9 +215,7 @@ void wl1271_scan_stm(struct wl1271 *wl)
 		break;
 
 	case WL1271_SCAN_STATE_DONE:
-		mutex_unlock(&wl->mutex);
 		ieee80211_scan_completed(wl->hw, false);
-		mutex_lock(&wl->mutex);
 
 		kfree(wl->scan.scanned_ch);
 		wl->scan.scanned_ch = NULL;