25 files changed, 30 insertions, 71 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1251.h b/drivers/net/wireless/wl12xx/wl1251.h
index 6b942a28e6a..e113d4c1fb3 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 a8845b8f245..c7cc5c1e8a7 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 5e65f47fda8..468b47b0328 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 90063697e8f..7661bc5e466 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 60d7e522486..e5c74c63137 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 5e4465ac08f..6ffe4cd5856 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 6dc3d080853..b3417c02a21 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 e093a1c5a20..54223556b30 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 ec456474a84..30eb5d150bf 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 b538bdd7b32..c5daec05d9e 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 269cefb3e7d..543f17582ea 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 f1c232e0887..ad6ca68b303 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 c81e95b45c1..faf221ca3f4 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 b55cb2bd459..0b997bdfec0 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 c688ac57aee..e5db81fc1df 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 d16edd9bf06..a5809019c5c 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 1b6294b3b99..25764592a59 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 da4e53406a0..4448f635a4d 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 b901b613565..c0b68b0a9aa 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 27fdfaaeb07..334ded9881c 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 2e273a97e7f..7dcf3cf7ae4 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 6634b3e27cf..388492a7f41 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 f40eeb37f5a..96011e78cd5 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 30194c0f36a..8e55cf8d509 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 30dc1000f56..e4950c8e396 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;