5 files changed, 572 insertions, 79 deletions

diff --git a/drivers/net/wireless/Kconfig b/drivers/net/wireless/Kconfig
index 77500cb7fd2..2fbe9b4506c 100644
--- a/drivers/net/wireless/Kconfig
+++ b/drivers/net/wireless/Kconfig
@@ -38,6 +38,12 @@ config LIBERTAS_THINFIRM
         ---help---
           A library for Marvell Libertas 8xxx devices using thinfirm.
 
+config LIBERTAS_THINFIRM_DEBUG
+        bool "Enable full debugging output in the Libertas thin firmware module."
+        depends on LIBERTAS_THINFIRM
+        ---help---
+          Debugging support.
+
 config LIBERTAS_THINFIRM_USB
         tristate "Marvell Libertas 8388 USB 802.11b/g cards with thin firmware"
         depends on LIBERTAS_THINFIRM && USB
diff --git a/drivers/net/wireless/libertas_tf/cmd.c b/drivers/net/wireless/libertas_tf/cmd.c
index 28790e03dc4..22645e4028d 100644
--- a/drivers/net/wireless/libertas_tf/cmd.c
+++ b/drivers/net/wireless/libertas_tf/cmd.c
@@ -7,6 +7,7 @@
  *  the Free Software Foundation; either version 2 of the License, or (at
  *  your option) any later version.
  */
+#include "deb_defs.h"
 #include "libertas_tf.h"
 
 static const struct channel_range channel_ranges[] = {
@@ -80,6 +81,8 @@ int lbtf_update_hw_spec(struct lbtf_private *priv)
         int ret = -1;
         u32 i;
 
+        lbtf_deb_enter(LBTF_DEB_CMD);
+
         memset(&cmd, 0, sizeof(cmd));
         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
         memcpy(cmd.permanentaddr, priv->current_addr, ETH_ALEN);
@@ -102,6 +105,8 @@ int lbtf_update_hw_spec(struct lbtf_private *priv)
                 priv->fwrelease >>  8 & 0xff,
                 priv->fwrelease       & 0xff,
                 priv->fwcapinfo);
+        lbtf_deb_cmd("GET_HW_SPEC: hardware interface 0x%x, hardware spec 0x%04x\n",
+                    cmd.hwifversion, cmd.version);
 
         /* Clamp region code to 8-bit since FW spec indicates that it should
          * only ever be 8-bit, even though the field size is 16-bit.  Some
@@ -116,8 +121,10 @@ int lbtf_update_hw_spec(struct lbtf_private *priv)
         }
 
         /* if it's unidentified region code, use the default (USA) */
-        if (i >= MRVDRV_MAX_REGION_CODE)
+        if (i >= MRVDRV_MAX_REGION_CODE) {
                 priv->regioncode = 0x10;
+                pr_info("unidentified region code; using the default (USA)\n");
+        }
 
         if (priv->current_addr[0] == 0xff)
                 memmove(priv->current_addr, cmd.permanentaddr, ETH_ALEN);
@@ -126,6 +133,7 @@ int lbtf_update_hw_spec(struct lbtf_private *priv)
 
         lbtf_geo_init(priv);
 out:
+        lbtf_deb_leave(LBTF_DEB_CMD);
         return ret;
 }
 
@@ -139,13 +147,18 @@ out:
  */
 int lbtf_set_channel(struct lbtf_private *priv, u8 channel)
 {
+        int ret = 0;
         struct cmd_ds_802_11_rf_channel cmd;
 
+        lbtf_deb_enter(LBTF_DEB_CMD);
+
         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
         cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_SET);
         cmd.channel = cpu_to_le16(channel);
 
-        return lbtf_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd);
+        ret = lbtf_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd);
+        lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", ret);
+        return ret;
 }
 
 int lbtf_beacon_set(struct lbtf_private *priv, struct sk_buff *beacon)
@@ -153,20 +166,28 @@ int lbtf_beacon_set(struct lbtf_private *priv, struct sk_buff *beacon)
         struct cmd_ds_802_11_beacon_set cmd;
         int size;
 
-        if (beacon->len > MRVL_MAX_BCN_SIZE)
+        lbtf_deb_enter(LBTF_DEB_CMD);
+
+        if (beacon->len > MRVL_MAX_BCN_SIZE) {
+                lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", -1);
                 return -1;
+        }
         size =  sizeof(cmd) - sizeof(cmd.beacon) + beacon->len;
         cmd.hdr.size = cpu_to_le16(size);
         cmd.len = cpu_to_le16(beacon->len);
         memcpy(cmd.beacon, (u8 *) beacon->data, beacon->len);
 
         lbtf_cmd_async(priv, CMD_802_11_BEACON_SET, &cmd.hdr, size);
+
+        lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", 0);
         return 0;
 }
 
 int lbtf_beacon_ctrl(struct lbtf_private *priv, bool beacon_enable,
-                     int beacon_int) {
+                     int beacon_int)
+{
         struct cmd_ds_802_11_beacon_control cmd;
+        lbtf_deb_enter(LBTF_DEB_CMD);
 
         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
         cmd.action = cpu_to_le16(CMD_ACT_SET);
@@ -174,6 +195,8 @@ int lbtf_beacon_ctrl(struct lbtf_private *priv, bool beacon_enable,
         cmd.beacon_period = cpu_to_le16(beacon_int);
 
         lbtf_cmd_async(priv, CMD_802_11_BEACON_CTRL, &cmd.hdr, sizeof(cmd));
+
+        lbtf_deb_leave(LBTF_DEB_CMD);
         return 0;
 }
 
@@ -181,17 +204,28 @@ static void lbtf_queue_cmd(struct lbtf_private *priv,
                           struct cmd_ctrl_node *cmdnode)
 {
         unsigned long flags;
+        lbtf_deb_enter(LBTF_DEB_HOST);
 
-        if (!cmdnode)
-                return;
+        if (!cmdnode) {
+                lbtf_deb_host("QUEUE_CMD: cmdnode is NULL\n");
+                goto qcmd_done;
+        }
 
-        if (!cmdnode->cmdbuf->size)
-                return;
+        if (!cmdnode->cmdbuf->size) {
+                lbtf_deb_host("DNLD_CMD: cmd size is zero\n");
+                goto qcmd_done;
+        }
 
         cmdnode->result = 0;
         spin_lock_irqsave(&priv->driver_lock, flags);
         list_add_tail(&cmdnode->list, &priv->cmdpendingq);
         spin_unlock_irqrestore(&priv->driver_lock, flags);
+
+        lbtf_deb_host("QUEUE_CMD: inserted command 0x%04x into cmdpendingq\n",
+                     le16_to_cpu(cmdnode->cmdbuf->command));
+
+qcmd_done:
+        lbtf_deb_leave(LBTF_DEB_HOST);
 }
 
 static void lbtf_submit_command(struct lbtf_private *priv,
@@ -204,22 +238,33 @@ static void lbtf_submit_command(struct lbtf_private *priv,
         int timeo = 5 * HZ;
         int ret;
 
+        lbtf_deb_enter(LBTF_DEB_HOST);
+
         cmd = cmdnode->cmdbuf;
 
         spin_lock_irqsave(&priv->driver_lock, flags);
         priv->cur_cmd = cmdnode;
         cmdsize = le16_to_cpu(cmd->size);
         command = le16_to_cpu(cmd->command);
+
+        lbtf_deb_cmd("DNLD_CMD: command 0x%04x, seq %d, size %d\n",
+                     command, le16_to_cpu(cmd->seqnum), cmdsize);
+        lbtf_deb_hex(LBTF_DEB_CMD, "DNLD_CMD", (void *) cmdnode->cmdbuf, cmdsize);
+
         ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) cmd, cmdsize);
         spin_unlock_irqrestore(&priv->driver_lock, flags);
 
-        if (ret)
+        if (ret) {
+                pr_info("DNLD_CMD: hw_host_to_card failed: %d\n", ret);
                 /* Let the timer kick in and retry, and potentially reset
                    the whole thing if the condition persists */
                 timeo = HZ;
+        }
 
         /* Setup the timer after transmit command */
         mod_timer(&priv->command_timer, jiffies + timeo);
+
+        lbtf_deb_leave(LBTF_DEB_HOST);
 }
 
 /**
@@ -229,8 +274,10 @@ static void lbtf_submit_command(struct lbtf_private *priv,
 static void __lbtf_cleanup_and_insert_cmd(struct lbtf_private *priv,
                                          struct cmd_ctrl_node *cmdnode)
 {
+        lbtf_deb_enter(LBTF_DEB_HOST);
+
         if (!cmdnode)
-                return;
+                goto cl_ins_out;
 
         cmdnode->callback = NULL;
         cmdnode->callback_arg = 0;
@@ -238,6 +285,9 @@ static void __lbtf_cleanup_and_insert_cmd(struct lbtf_private *priv,
         memset(cmdnode->cmdbuf, 0, LBS_CMD_BUFFER_SIZE);
 
         list_add_tail(&cmdnode->list, &priv->cmdfreeq);
+
+cl_ins_out:
+        lbtf_deb_leave(LBTF_DEB_HOST);
 }
 
 static void lbtf_cleanup_and_insert_cmd(struct lbtf_private *priv,
@@ -266,29 +316,41 @@ int lbtf_cmd_set_mac_multicast_addr(struct lbtf_private *priv)
 {
         struct cmd_ds_mac_multicast_addr cmd;
 
+        lbtf_deb_enter(LBTF_DEB_CMD);
+
         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
         cmd.action = cpu_to_le16(CMD_ACT_SET);
 
         cmd.nr_of_adrs = cpu_to_le16((u16) priv->nr_of_multicastmacaddr);
+
+        lbtf_deb_cmd("MULTICAST_ADR: setting %d addresses\n", cmd.nr_of_adrs);
+
         memcpy(cmd.maclist, priv->multicastlist,
                priv->nr_of_multicastmacaddr * ETH_ALEN);
 
         lbtf_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &cmd.hdr, sizeof(cmd));
+
+        lbtf_deb_leave(LBTF_DEB_CMD);
         return 0;
 }
 
 void lbtf_set_mode(struct lbtf_private *priv, enum lbtf_mode mode)
 {
         struct cmd_ds_set_mode cmd;
+        lbtf_deb_enter(LBTF_DEB_WEXT);
 
         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
         cmd.mode = cpu_to_le16(mode);
+        lbtf_deb_wext("Switching to mode: 0x%x\n", mode);
         lbtf_cmd_async(priv, CMD_802_11_SET_MODE, &cmd.hdr, sizeof(cmd));
+
+        lbtf_deb_leave(LBTF_DEB_WEXT);
 }
 
 void lbtf_set_bssid(struct lbtf_private *priv, bool activate, const u8 *bssid)
 {
         struct cmd_ds_set_bssid cmd;
+        lbtf_deb_enter(LBTF_DEB_CMD);
 
         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
         cmd.activate = activate ? 1 : 0;
@@ -296,11 +358,13 @@ void lbtf_set_bssid(struct lbtf_private *priv, bool activate, const u8 *bssid)
                 memcpy(cmd.bssid, bssid, ETH_ALEN);
 
         lbtf_cmd_async(priv, CMD_802_11_SET_BSSID, &cmd.hdr, sizeof(cmd));
+        lbtf_deb_leave(LBTF_DEB_CMD);
 }
 
 int lbtf_set_mac_address(struct lbtf_private *priv, uint8_t *mac_addr)
 {
         struct cmd_ds_802_11_mac_address cmd;
+        lbtf_deb_enter(LBTF_DEB_CMD);
 
         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
         cmd.action = cpu_to_le16(CMD_ACT_SET);
@@ -308,6 +372,7 @@ int lbtf_set_mac_address(struct lbtf_private *priv, uint8_t *mac_addr)
         memcpy(cmd.macadd, mac_addr, ETH_ALEN);
 
         lbtf_cmd_async(priv, CMD_802_11_MAC_ADDRESS, &cmd.hdr, sizeof(cmd));
+        lbtf_deb_leave(LBTF_DEB_CMD);
         return 0;
 }
 
@@ -316,6 +381,8 @@ int lbtf_set_radio_control(struct lbtf_private *priv)
         int ret = 0;
         struct cmd_ds_802_11_radio_control cmd;
 
+        lbtf_deb_enter(LBTF_DEB_CMD);
+
         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
         cmd.action = cpu_to_le16(CMD_ACT_SET);
 
@@ -339,19 +406,28 @@ int lbtf_set_radio_control(struct lbtf_private *priv)
         else
                 cmd.control &= cpu_to_le16(~TURN_ON_RF);
 
+        lbtf_deb_cmd("RADIO_SET: radio %d, preamble %d\n", priv->radioon,
+                    priv->preamble);
+
         ret = lbtf_cmd_with_response(priv, CMD_802_11_RADIO_CONTROL, &cmd);
+
+        lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", ret);
         return ret;
 }
 
 void lbtf_set_mac_control(struct lbtf_private *priv)
 {
         struct cmd_ds_mac_control cmd;
+        lbtf_deb_enter(LBTF_DEB_CMD);
+
         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
         cmd.action = cpu_to_le16(priv->mac_control);
         cmd.reserved = 0;
 
         lbtf_cmd_async(priv, CMD_MAC_CONTROL,
                 &cmd.hdr, sizeof(cmd));
+
+        lbtf_deb_leave(LBTF_DEB_CMD);
 }
 
 /**
@@ -363,29 +439,43 @@ void lbtf_set_mac_control(struct lbtf_private *priv)
  */
 int lbtf_allocate_cmd_buffer(struct lbtf_private *priv)
 {
+        int ret = 0;
         u32 bufsize;
         u32 i;
         struct cmd_ctrl_node *cmdarray;
 
+        lbtf_deb_enter(LBTF_DEB_HOST);
+
         /* Allocate and initialize the command array */
         bufsize = sizeof(struct cmd_ctrl_node) * LBS_NUM_CMD_BUFFERS;
         cmdarray = kzalloc(bufsize, GFP_KERNEL);
-        if (!cmdarray)
-                return -1;
+        if (!cmdarray) {
+                lbtf_deb_host("ALLOC_CMD_BUF: tempcmd_array is NULL\n");
+                ret = -1;
+                goto done;
+        }
         priv->cmd_array = cmdarray;
 
         /* Allocate and initialize each command buffer in the command array */
         for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
                 cmdarray[i].cmdbuf = kzalloc(LBS_CMD_BUFFER_SIZE, GFP_KERNEL);
-                if (!cmdarray[i].cmdbuf)
-                        return -1;
+                if (!cmdarray[i].cmdbuf) {
+                        lbtf_deb_host("ALLOC_CMD_BUF: ptempvirtualaddr is NULL\n");
+                        ret = -1;
+                        goto done;
+                }
         }
 
         for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
                 init_waitqueue_head(&cmdarray[i].cmdwait_q);
                 lbtf_cleanup_and_insert_cmd(priv, &cmdarray[i]);
         }
-        return 0;
+
+        ret = 0;
+
+done:
+        lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %d", ret);
+        return ret;
 }
 
 /**
@@ -400,9 +490,13 @@ int lbtf_free_cmd_buffer(struct lbtf_private *priv)
         struct cmd_ctrl_node *cmdarray;
         unsigned int i;
 
+        lbtf_deb_enter(LBTF_DEB_HOST);
+
         /* need to check if cmd array is allocated or not */
-        if (priv->cmd_array == NULL)
-                return 0;
+        if (priv->cmd_array == NULL) {
+                lbtf_deb_host("FREE_CMD_BUF: cmd_array is NULL\n");
+                goto done;
+        }
 
         cmdarray = priv->cmd_array;
 
@@ -416,6 +510,8 @@ int lbtf_free_cmd_buffer(struct lbtf_private *priv)
         kfree(priv->cmd_array);
         priv->cmd_array = NULL;
 
+done:
+        lbtf_deb_leave(LBTF_DEB_HOST);
         return 0;
 }
 
@@ -431,6 +527,8 @@ static struct cmd_ctrl_node *lbtf_get_cmd_ctrl_node(struct lbtf_private *priv)
         struct cmd_ctrl_node *tempnode;
         unsigned long flags;
 
+        lbtf_deb_enter(LBTF_DEB_HOST);
+
         if (!priv)
                 return NULL;
 
@@ -440,11 +538,14 @@ static struct cmd_ctrl_node *lbtf_get_cmd_ctrl_node(struct lbtf_private *priv)
                 tempnode = list_first_entry(&priv->cmdfreeq,
                                             struct cmd_ctrl_node, list);
                 list_del(&tempnode->list);
-        } else
+        } else {
+                lbtf_deb_host("GET_CMD_NODE: cmd_ctrl_node is not available\n");
                 tempnode = NULL;
+        }
 
         spin_unlock_irqrestore(&priv->driver_lock, flags);
 
+        lbtf_deb_leave(LBTF_DEB_HOST);
         return tempnode;
 }
 
@@ -460,16 +561,20 @@ int lbtf_execute_next_command(struct lbtf_private *priv)
         struct cmd_ctrl_node *cmdnode = NULL;
         struct cmd_header *cmd;
         unsigned long flags;
+        int ret = 0;
 
-        /* Debug group is LBS_DEB_THREAD and not LBS_DEB_HOST, because the
+        /* Debug group is lbtf_deb_THREAD and not lbtf_deb_HOST, because the
          * only caller to us is lbtf_thread() and we get even when a
          * data packet is received */
+        lbtf_deb_enter(LBTF_DEB_THREAD);
 
         spin_lock_irqsave(&priv->driver_lock, flags);
 
         if (priv->cur_cmd) {
+                pr_alert("EXEC_NEXT_CMD: already processing command!\n");
                 spin_unlock_irqrestore(&priv->driver_lock, flags);
-                return -1;
+                ret = -1;
+                goto done;
         }
 
         if (!list_empty(&priv->cmdpendingq)) {
@@ -481,11 +586,17 @@ int lbtf_execute_next_command(struct lbtf_private *priv)
                 cmd = cmdnode->cmdbuf;
 
                 list_del(&cmdnode->list);
+                lbtf_deb_host("EXEC_NEXT_CMD: sending command 0x%04x\n",
+                            le16_to_cpu(cmd->command));
                 spin_unlock_irqrestore(&priv->driver_lock, flags);
                 lbtf_submit_command(priv, cmdnode);
         } else
                 spin_unlock_irqrestore(&priv->driver_lock, flags);
-        return 0;
+
+        ret = 0;
+done:
+        lbtf_deb_leave(LBTF_DEB_THREAD);
+        return ret;
 }
 
 static struct cmd_ctrl_node *__lbtf_cmd_async(struct lbtf_private *priv,
@@ -496,14 +607,22 @@ static struct cmd_ctrl_node *__lbtf_cmd_async(struct lbtf_private *priv,
 {
         struct cmd_ctrl_node *cmdnode;
 
-        if (priv->surpriseremoved)
-                return ERR_PTR(-ENOENT);
+        lbtf_deb_enter(LBTF_DEB_HOST);
+
+        if (priv->surpriseremoved) {
+                lbtf_deb_host("PREP_CMD: card removed\n");
+                cmdnode = ERR_PTR(-ENOENT);
+                goto done;
+        }
 
         cmdnode = lbtf_get_cmd_ctrl_node(priv);
         if (cmdnode == NULL) {
+                lbtf_deb_host("PREP_CMD: cmdnode is NULL\n");
+
                 /* Wake up main thread to execute next command */
                 queue_work(lbtf_wq, &priv->cmd_work);
-                return ERR_PTR(-ENOBUFS);
+                cmdnode = ERR_PTR(-ENOBUFS);
+                goto done;
         }
 
         cmdnode->callback = callback;
@@ -518,17 +637,24 @@ static struct cmd_ctrl_node *__lbtf_cmd_async(struct lbtf_private *priv,
         cmdnode->cmdbuf->size    = cpu_to_le16(in_cmd_size);
         cmdnode->cmdbuf->seqnum  = cpu_to_le16(priv->seqnum);
         cmdnode->cmdbuf->result  = 0;
+
+        lbtf_deb_host("PREP_CMD: command 0x%04x\n", command);
+
         cmdnode->cmdwaitqwoken = 0;
         lbtf_queue_cmd(priv, cmdnode);
         queue_work(lbtf_wq, &priv->cmd_work);
 
+ done:
+        lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %p", cmdnode);
         return cmdnode;
 }
 
 void lbtf_cmd_async(struct lbtf_private *priv, uint16_t command,
         struct cmd_header *in_cmd, int in_cmd_size)
 {
+        lbtf_deb_enter(LBTF_DEB_CMD);
         __lbtf_cmd_async(priv, command, in_cmd, in_cmd_size, NULL, 0);
+        lbtf_deb_leave(LBTF_DEB_CMD);
 }
 
 int __lbtf_cmd(struct lbtf_private *priv, uint16_t command,
@@ -541,30 +667,35 @@ int __lbtf_cmd(struct lbtf_private *priv, uint16_t command,
         unsigned long flags;
         int ret = 0;
 
+        lbtf_deb_enter(LBTF_DEB_HOST);
+
         cmdnode = __lbtf_cmd_async(priv, command, in_cmd, in_cmd_size,
                                   callback, callback_arg);
-        if (IS_ERR(cmdnode))
-                return PTR_ERR(cmdnode);
+        if (IS_ERR(cmdnode)) {
+                ret = PTR_ERR(cmdnode);
+                goto done;
+        }
 
         might_sleep();
         ret = wait_event_interruptible(cmdnode->cmdwait_q,
                                        cmdnode->cmdwaitqwoken);
-       if (ret) {
-                printk(KERN_DEBUG
-                       "libertastf: command 0x%04x interrupted by signal",
-                       command);
-                return ret;
+        if (ret) {
+                pr_info("PREP_CMD: command 0x%04x interrupted by signal: %d\n",
+                            command, ret);
+                goto done;
         }
 
         spin_lock_irqsave(&priv->driver_lock, flags);
         ret = cmdnode->result;
         if (ret)
-                printk(KERN_DEBUG "libertastf: command 0x%04x failed: %d\n",
+                pr_info("PREP_CMD: command 0x%04x failed: %d\n",
                             command, ret);
 
         __lbtf_cleanup_and_insert_cmd(priv, cmdnode);
         spin_unlock_irqrestore(&priv->driver_lock, flags);
 
+done:
+        lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %d", ret);
         return ret;
 }
 EXPORT_SYMBOL_GPL(__lbtf_cmd);
@@ -585,6 +716,8 @@ int lbtf_process_rx_command(struct lbtf_private *priv)
         unsigned long flags;
         uint16_t result;
 
+        lbtf_deb_enter(LBTF_DEB_CMD);
+
         mutex_lock(&priv->lock);
         spin_lock_irqsave(&priv->driver_lock, flags);
 
@@ -600,7 +733,7 @@ int lbtf_process_rx_command(struct lbtf_private *priv)
         result = le16_to_cpu(resp->result);
 
         if (net_ratelimit())
-                printk(KERN_DEBUG "libertastf: cmd response 0x%04x, seq %d, size %d\n",
+                pr_info("libertastf: cmd response 0x%04x, seq %d, size %d\n",
                         respcmd, le16_to_cpu(resp->seqnum),
                         le16_to_cpu(resp->size));
 
@@ -637,7 +770,7 @@ int lbtf_process_rx_command(struct lbtf_private *priv)
                 switch (respcmd) {
                 case CMD_RET(CMD_GET_HW_SPEC):
                 case CMD_RET(CMD_802_11_RESET):
-                        printk(KERN_DEBUG "libertastf: reset failed\n");
+                        pr_info("libertastf: reset failed\n");
                         break;
 
                 }
@@ -664,5 +797,6 @@ int lbtf_process_rx_command(struct lbtf_private *priv)
 
 done:
         mutex_unlock(&priv->lock);
+        lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", ret);
         return ret;
 }
diff --git a/drivers/net/wireless/libertas_tf/deb_defs.h b/drivers/net/wireless/libertas_tf/deb_defs.h
new file mode 100644
index 00000000000..9a3e92bec5f
--- /dev/null
+++ b/drivers/net/wireless/libertas_tf/deb_defs.h
@@ -0,0 +1,106 @@
+/**
+  * This header file contains global constant/enum definitions,
+  * global variable declaration.
+  */
+#ifndef _LBS_DEB_DEFS_H_
+#define _LBS_DEB_EFS_H_
+
+#ifndef DRV_NAME
+#define DRV_NAME "libertas_tf"
+#endif
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/spinlock.h>
+
+#ifdef CONFIG_LIBERTAS_THINFIRM_DEBUG
+#define DEBUG
+#define PROC_DEBUG
+#endif
+
+#define LBTF_DEB_ENTER  0x00000001
+#define LBTF_DEB_LEAVE  0x00000002
+#define LBTF_DEB_MAIN   0x00000004
+#define LBTF_DEB_NET    0x00000008
+#define LBTF_DEB_MESH   0x00000010
+#define LBTF_DEB_WEXT   0x00000020
+#define LBTF_DEB_IOCTL  0x00000040
+#define LBTF_DEB_SCAN   0x00000080
+#define LBTF_DEB_ASSOC  0x00000100
+#define LBTF_DEB_JOIN   0x00000200
+#define LBTF_DEB_11D    0x00000400
+#define LBTF_DEB_DEBUGFS        0x00000800
+#define LBTF_DEB_ETHTOOL        0x00001000
+#define LBTF_DEB_HOST   0x00002000
+#define LBTF_DEB_CMD    0x00004000
+#define LBTF_DEB_RX     0x00008000
+#define LBTF_DEB_TX     0x00010000
+#define LBTF_DEB_USB    0x00020000
+#define LBTF_DEB_CS     0x00040000
+#define LBTF_DEB_FW     0x00080000
+#define LBTF_DEB_THREAD 0x00100000
+#define LBTF_DEB_HEX    0x00200000
+#define LBTF_DEB_SDIO   0x00400000
+#define LBTF_DEB_MACOPS 0x00800000
+
+extern unsigned int lbtf_debug;
+
+
+#ifdef DEBUG
+#define LBTF_DEB_LL(grp, grpnam, fmt, args...) \
+do { if ((lbtf_debug & (grp)) == (grp)) \
+  printk(KERN_DEBUG DRV_NAME grpnam "%s: " fmt, \
+         in_interrupt() ? " (INT)" : "", ## args); } while (0)
+#else
+#define LBTF_DEB_LL(grp, grpnam, fmt, args...) do {} while (0)
+#endif
+
+#define lbtf_deb_enter(grp) \
+  LBTF_DEB_LL(grp | LBTF_DEB_ENTER, " enter", "%s()\n", __func__);
+#define lbtf_deb_enter_args(grp, fmt, args...) \
+  LBTF_DEB_LL(grp | LBTF_DEB_ENTER, " enter", "%s(" fmt ")\n", __func__, ## args);
+#define lbtf_deb_leave(grp) \
+  LBTF_DEB_LL(grp | LBTF_DEB_LEAVE, " leave", "%s()\n", __func__);
+#define lbtf_deb_leave_args(grp, fmt, args...) \
+  LBTF_DEB_LL(grp | LBTF_DEB_LEAVE, " leave", "%s(), " fmt "\n", \
+  __func__, ##args);
+#define lbtf_deb_main(fmt, args...)      LBTF_DEB_LL(LBTF_DEB_MAIN, " main", fmt, ##args)
+#define lbtf_deb_net(fmt, args...)       LBTF_DEB_LL(LBTF_DEB_NET, " net", fmt, ##args)
+#define lbtf_deb_mesh(fmt, args...)      LBTF_DEB_LL(LBTF_DEB_MESH, " mesh", fmt, ##args)
+#define lbtf_deb_wext(fmt, args...)      LBTF_DEB_LL(LBTF_DEB_WEXT, " wext", fmt, ##args)
+#define lbtf_deb_ioctl(fmt, args...)     LBTF_DEB_LL(LBTF_DEB_IOCTL, " ioctl", fmt, ##args)
+#define lbtf_deb_scan(fmt, args...)      LBTF_DEB_LL(LBTF_DEB_SCAN, " scan", fmt, ##args)
+#define lbtf_deb_assoc(fmt, args...)     LBTF_DEB_LL(LBTF_DEB_ASSOC, " assoc", fmt, ##args)
+#define lbtf_deb_join(fmt, args...)      LBTF_DEB_LL(LBTF_DEB_JOIN, " join", fmt, ##args)
+#define lbtf_deb_11d(fmt, args...)       LBTF_DEB_LL(LBTF_DEB_11D, " 11d", fmt, ##args)
+#define lbtf_deb_debugfs(fmt, args...)   LBTF_DEB_LL(LBTF_DEB_DEBUGFS, " debugfs", fmt, ##args)
+#define lbtf_deb_ethtool(fmt, args...)   LBTF_DEB_LL(LBTF_DEB_ETHTOOL, " ethtool", fmt, ##args)
+#define lbtf_deb_host(fmt, args...)      LBTF_DEB_LL(LBTF_DEB_HOST, " host", fmt, ##args)
+#define lbtf_deb_cmd(fmt, args...)       LBTF_DEB_LL(LBTF_DEB_CMD, " cmd", fmt, ##args)
+#define lbtf_deb_rx(fmt, args...)        LBTF_DEB_LL(LBTF_DEB_RX, " rx", fmt, ##args)
+#define lbtf_deb_tx(fmt, args...)        LBTF_DEB_LL(LBTF_DEB_TX, " tx", fmt, ##args)
+#define lbtf_deb_fw(fmt, args...)        LBTF_DEB_LL(LBTF_DEB_FW, " fw", fmt, ##args)
+#define lbtf_deb_usb(fmt, args...)       LBTF_DEB_LL(LBTF_DEB_USB, " usb", fmt, ##args)
+#define lbtf_deb_usbd(dev, fmt, args...) LBTF_DEB_LL(LBTF_DEB_USB, " usbd", "%s:" fmt, dev_name(dev), ##args)
+#define lbtf_deb_cs(fmt, args...)        LBTF_DEB_LL(LBTF_DEB_CS, " cs", fmt, ##args)
+#define lbtf_deb_thread(fmt, args...)    LBTF_DEB_LL(LBTF_DEB_THREAD, " thread", fmt, ##args)
+#define lbtf_deb_sdio(fmt, args...)      LBTF_DEB_LL(LBTF_DEB_SDIO, " thread", fmt, ##args)
+#define lbtf_deb_macops(fmt, args...)      LBTF_DEB_LL(LBTF_DEB_MACOPS, " thread", fmt, ##args)
+
+#ifdef DEBUG
+static inline void lbtf_deb_hex(unsigned int grp, const char *prompt, u8 *buf, int len)
+{
+        char newprompt[32];
+
+        if (len &&
+            (lbtf_debug & LBTF_DEB_HEX) &&
+            (lbtf_debug & grp)) {
+                snprintf(newprompt, sizeof(newprompt), DRV_NAME " %s: ", prompt);
+                print_hex_dump_bytes(prompt, DUMP_PREFIX_NONE, buf, len);
+        }
+}
+#else
+#define lbtf_deb_hex(grp, prompt, buf, len)     do {} while (0)
+#endif
+
+#endif
diff --git a/drivers/net/wireless/libertas_tf/if_usb.c b/drivers/net/wireless/libertas_tf/if_usb.c
index 3691c307e67..919451a2ee4 100644
--- a/drivers/net/wireless/libertas_tf/if_usb.c
+++ b/drivers/net/wireless/libertas_tf/if_usb.c
@@ -7,16 +7,20 @@
  *  the Free Software Foundation; either version 2 of the License, or (at
  *  your option) any later version.
  */
+#define DRV_NAME "lbtf_usb"
+
+#include "deb_defs.h"
+#include "libertas_tf.h"
+#include "if_usb.h"
+
 #include <linux/delay.h>
 #include <linux/moduleparam.h>
 #include <linux/firmware.h>
 #include <linux/netdevice.h>
 #include <linux/usb.h>
 
-#define DRV_NAME "lbtf_usb"
-
-#include "libertas_tf.h"
-#include "if_usb.h"
+#define INSANEDEBUG     0
+#define lbtf_deb_usb2(...) do { if (INSANEDEBUG) lbtf_deb_usbd(__VA_ARGS__); } while (0)
 
 #define MESSAGE_HEADER_LEN      4
 
@@ -52,9 +56,14 @@ static int if_usb_reset_device(struct if_usb_card *cardp);
  */
 static void if_usb_write_bulk_callback(struct urb *urb)
 {
-        if (urb->status != 0)
-                printk(KERN_INFO "libertastf: URB in failure status: %d\n",
-                       urb->status);
+        if (urb->status != 0) {
+                /* print the failure status number for debug */
+                pr_info("URB in failure status: %d\n", urb->status);
+        } else {
+                lbtf_deb_usb2(&urb->dev->dev, "URB status is successful\n");
+                lbtf_deb_usb2(&urb->dev->dev, "Actual length transmitted %d\n",
+                             urb->actual_length);
+        }
 }
 
 /**
@@ -64,6 +73,8 @@ static void if_usb_write_bulk_callback(struct urb *urb)
  */
 static void if_usb_free(struct if_usb_card *cardp)
 {
+        lbtf_deb_enter(LBTF_DEB_USB);
+
         /* Unlink tx & rx urb */
         usb_kill_urb(cardp->tx_urb);
         usb_kill_urb(cardp->rx_urb);
@@ -80,6 +91,8 @@ static void if_usb_free(struct if_usb_card *cardp)
 
         kfree(cardp->ep_out_buf);
         cardp->ep_out_buf = NULL;
+
+        lbtf_deb_leave(LBTF_DEB_USB);
 }
 
 static void if_usb_setup_firmware(struct lbtf_private *priv)
@@ -87,23 +100,33 @@ static void if_usb_setup_firmware(struct lbtf_private *priv)
         struct if_usb_card *cardp = priv->card;
         struct cmd_ds_set_boot2_ver b2_cmd;
 
+        lbtf_deb_enter(LBTF_DEB_USB);
+
         if_usb_submit_rx_urb(cardp);
         b2_cmd.hdr.size = cpu_to_le16(sizeof(b2_cmd));
         b2_cmd.action = 0;
         b2_cmd.version = cardp->boot2_version;
 
         if (lbtf_cmd_with_response(priv, CMD_SET_BOOT2_VER, &b2_cmd))
-                printk(KERN_INFO "libertastf: setting boot2 version failed\n");
+                lbtf_deb_usb("Setting boot2 version failed\n");
+
+        lbtf_deb_leave(LBTF_DEB_USB);
 }
 
 static void if_usb_fw_timeo(unsigned long priv)
 {
         struct if_usb_card *cardp = (void *)priv;
 
-        if (!cardp->fwdnldover)
+        lbtf_deb_enter(LBTF_DEB_USB);
+        if (!cardp->fwdnldover) {
                 /* Download timed out */
                 cardp->priv->surpriseremoved = 1;
+                pr_err("Download timed out\n");
+        } else {
+                lbtf_deb_usb("Download complete, no event. Assuming success\n");
+        }
         wake_up(&cardp->fw_wq);
+        lbtf_deb_leave(LBTF_DEB_USB);
 }
 
 /**
@@ -124,11 +147,14 @@ static int if_usb_probe(struct usb_interface *intf,
         struct if_usb_card *cardp;
         int i;
 
+        lbtf_deb_enter(LBTF_DEB_USB);
         udev = interface_to_usbdev(intf);
 
         cardp = kzalloc(sizeof(struct if_usb_card), GFP_KERNEL);
-        if (!cardp)
+        if (!cardp) {
+                pr_err("Out of memory allocating private data.\n");
                 goto error;
+        }
 
         setup_timer(&cardp->fw_timeout, if_usb_fw_timeo, (unsigned long)cardp);
         init_waitqueue_head(&cardp->fw_wq);
@@ -136,38 +162,62 @@ static int if_usb_probe(struct usb_interface *intf,
         cardp->udev = udev;
         iface_desc = intf->cur_altsetting;
 
+        lbtf_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
+                     " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
+                     le16_to_cpu(udev->descriptor.bcdUSB),
+                     udev->descriptor.bDeviceClass,
+                     udev->descriptor.bDeviceSubClass,
+                     udev->descriptor.bDeviceProtocol);
+
         for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
                 endpoint = &iface_desc->endpoint[i].desc;
                 if (usb_endpoint_is_bulk_in(endpoint)) {
                         cardp->ep_in_size =
                                 le16_to_cpu(endpoint->wMaxPacketSize);
                         cardp->ep_in = usb_endpoint_num(endpoint);
+
+                        lbtf_deb_usbd(&udev->dev, "in_endpoint = %d\n", cardp->ep_in);
+                        lbtf_deb_usbd(&udev->dev, "Bulk in size is %d\n", cardp->ep_in_size);
                 } else if (usb_endpoint_is_bulk_out(endpoint)) {
                         cardp->ep_out_size =
                                 le16_to_cpu(endpoint->wMaxPacketSize);
                         cardp->ep_out = usb_endpoint_num(endpoint);
+
+                        lbtf_deb_usbd(&udev->dev, "out_endpoint = %d\n", cardp->ep_out);
+                        lbtf_deb_usbd(&udev->dev, "Bulk out size is %d\n",
+                                      cardp->ep_out_size);
                 }
         }
-        if (!cardp->ep_out_size || !cardp->ep_in_size)
+        if (!cardp->ep_out_size || !cardp->ep_in_size) {
+                lbtf_deb_usbd(&udev->dev, "Endpoints not found\n");
                 /* Endpoints not found */
                 goto dealloc;
+        }
 
         cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
-        if (!cardp->rx_urb)
+        if (!cardp->rx_urb) {
+                lbtf_deb_usbd(&udev->dev, "Rx URB allocation failed\n");
                 goto dealloc;
+        }
 
         cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
-        if (!cardp->tx_urb)
+        if (!cardp->tx_urb) {
+                lbtf_deb_usbd(&udev->dev, "Tx URB allocation failed\n");
                 goto dealloc;
+        }
 
         cardp->cmd_urb = usb_alloc_urb(0, GFP_KERNEL);
-        if (!cardp->cmd_urb)
+        if (!cardp->cmd_urb) {
+                lbtf_deb_usbd(&udev->dev, "Cmd URB allocation failed\n");
                 goto dealloc;
+        }
 
         cardp->ep_out_buf = kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
                                     GFP_KERNEL);
-        if (!cardp->ep_out_buf)
+        if (!cardp->ep_out_buf) {
+                lbtf_deb_usbd(&udev->dev, "Could not allocate buffer\n");
                 goto dealloc;
+        }
 
         priv = lbtf_add_card(cardp, &udev->dev);
         if (!priv)
@@ -188,6 +238,7 @@ static int if_usb_probe(struct usb_interface *intf,
 dealloc:
         if_usb_free(cardp);
 error:
+lbtf_deb_leave(LBTF_DEB_MAIN);
         return -ENOMEM;
 }
 
@@ -201,6 +252,8 @@ static void if_usb_disconnect(struct usb_interface *intf)
         struct if_usb_card *cardp = usb_get_intfdata(intf);
         struct lbtf_private *priv = (struct lbtf_private *) cardp->priv;
 
+        lbtf_deb_enter(LBTF_DEB_MAIN);
+
         if_usb_reset_device(cardp);
 
         if (priv)
@@ -211,6 +264,8 @@ static void if_usb_disconnect(struct usb_interface *intf)
 
         usb_set_intfdata(intf, NULL);
         usb_put_dev(interface_to_usbdev(intf));
+
+        lbtf_deb_leave(LBTF_DEB_MAIN);
 }
 
 /**
@@ -225,6 +280,8 @@ static int if_usb_send_fw_pkt(struct if_usb_card *cardp)
         struct fwdata *fwdata = cardp->ep_out_buf;
         u8 *firmware = (u8 *) cardp->fw->data;
 
+        lbtf_deb_enter(LBTF_DEB_FW);
+
         /* If we got a CRC failure on the last block, back
            up and retry it */
         if (!cardp->CRC_OK) {
@@ -232,6 +289,9 @@ static int if_usb_send_fw_pkt(struct if_usb_card *cardp)
                 cardp->fwseqnum--;
         }
 
+        lbtf_deb_usb2(&cardp->udev->dev, "totalbytes = %d\n",
+                     cardp->totalbytes);
+
         /* struct fwdata (which we sent to the card) has an
            extra __le32 field in between the header and the data,
            which is not in the struct fwheader in the actual
@@ -245,18 +305,33 @@ static int if_usb_send_fw_pkt(struct if_usb_card *cardp)
         memcpy(fwdata->data, &firmware[cardp->totalbytes],
                le32_to_cpu(fwdata->hdr.datalength));
 
+        lbtf_deb_usb2(&cardp->udev->dev, "Data length = %d\n",
+                     le32_to_cpu(fwdata->hdr.datalength));
+
         fwdata->seqnum = cpu_to_le32(++cardp->fwseqnum);
         cardp->totalbytes += le32_to_cpu(fwdata->hdr.datalength);
 
         usb_tx_block(cardp, cardp->ep_out_buf, sizeof(struct fwdata) +
                      le32_to_cpu(fwdata->hdr.datalength), 0);
 
-        if (fwdata->hdr.dnldcmd == cpu_to_le32(FW_HAS_LAST_BLOCK))
+        if (fwdata->hdr.dnldcmd == cpu_to_le32(FW_HAS_DATA_TO_RECV)) {
+                lbtf_deb_usb2(&cardp->udev->dev, "There are data to follow\n");
+                lbtf_deb_usb2(&cardp->udev->dev, "seqnum = %d totalbytes = %d\n",
+                             cardp->fwseqnum, cardp->totalbytes);
+        } else if (fwdata->hdr.dnldcmd == cpu_to_le32(FW_HAS_LAST_BLOCK)) {
+                lbtf_deb_usb2(&cardp->udev->dev, "Host has finished FW downloading\n");
+                lbtf_deb_usb2(&cardp->udev->dev, "Donwloading FW JUMP BLOCK\n");
+
                 /* Host has finished FW downloading
                  * Donwloading FW JUMP BLOCK
                  */
                 cardp->fwfinalblk = 1;
+        }
 
+        lbtf_deb_usb2(&cardp->udev->dev, "Firmware download done; size %d\n",
+                     cardp->totalbytes);
+
+        lbtf_deb_leave(LBTF_DEB_FW);
         return 0;
 }
 
@@ -265,6 +340,8 @@ static int if_usb_reset_device(struct if_usb_card *cardp)
         struct cmd_ds_802_11_reset *cmd = cardp->ep_out_buf + 4;
         int ret;
 
+        lbtf_deb_enter(LBTF_DEB_USB);
+
         *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST);
 
         cmd->hdr.command = cpu_to_le16(CMD_802_11_RESET);
@@ -279,6 +356,8 @@ static int if_usb_reset_device(struct if_usb_card *cardp)
         ret = usb_reset_device(cardp->udev);
         msleep(100);
 
+        lbtf_deb_leave_args(LBTF_DEB_USB, "ret %d", ret);
+
         return ret;
 }
 EXPORT_SYMBOL_GPL(if_usb_reset_device);
@@ -296,11 +375,15 @@ EXPORT_SYMBOL_GPL(if_usb_reset_device);
 static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload,
                         uint16_t nb, u8 data)
 {
+        int ret = -1;
         struct urb *urb;
 
+        lbtf_deb_enter(LBTF_DEB_USB);
         /* check if device is removed */
-        if (cardp->priv->surpriseremoved)
-                return -1;
+        if (cardp->priv->surpriseremoved) {
+                lbtf_deb_usbd(&cardp->udev->dev, "Device removed\n");
+                goto tx_ret;
+        }
 
         if (data)
                 urb = cardp->tx_urb;
@@ -314,19 +397,34 @@ static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload,
 
         urb->transfer_flags |= URB_ZERO_PACKET;
 
-        if (usb_submit_urb(urb, GFP_ATOMIC))
-                return -1;
-        return 0;
+        if (usb_submit_urb(urb, GFP_ATOMIC)) {
+                lbtf_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed: %d\n", ret);
+                goto tx_ret;
+        }
+
+        lbtf_deb_usb2(&cardp->udev->dev, "usb_submit_urb success\n");
+
+        ret = 0;
+
+tx_ret:
+        lbtf_deb_leave(LBTF_DEB_USB);
+        return ret;
 }
 
 static int __if_usb_submit_rx_urb(struct if_usb_card *cardp,
                                   void (*callbackfn)(struct urb *urb))
 {
         struct sk_buff *skb;
+        int ret = -1;
+
+        lbtf_deb_enter(LBTF_DEB_USB);
 
         skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE);
-        if (!skb)
+        if (!skb) {
+                pr_err("No free skb\n");
+                lbtf_deb_leave(LBTF_DEB_USB);
                 return -1;
+        }
 
         cardp->rx_skb = skb;
 
@@ -338,12 +436,19 @@ static int __if_usb_submit_rx_urb(struct if_usb_card *cardp,
 
         cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
 
-        if (usb_submit_urb(cardp->rx_urb, GFP_ATOMIC)) {
+        lbtf_deb_usb2(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb);
+        ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC);
+        if (ret) {
+                lbtf_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed: %d\n", ret);
                 kfree_skb(skb);
                 cardp->rx_skb = NULL;
+                lbtf_deb_leave(LBTF_DEB_USB);
                 return -1;
-        } else
+        } else {
+                lbtf_deb_usb2(&cardp->udev->dev, "Submit Rx URB success\n");
+                lbtf_deb_leave(LBTF_DEB_USB);
                 return 0;
+        }
 }
 
 static int if_usb_submit_rx_urb_fwload(struct if_usb_card *cardp)
@@ -363,8 +468,12 @@ static void if_usb_receive_fwload(struct urb *urb)
         struct fwsyncheader *syncfwheader;
         struct bootcmdresp bcmdresp;
 
+        lbtf_deb_enter(LBTF_DEB_USB);
         if (urb->status) {
+                lbtf_deb_usbd(&cardp->udev->dev,
+                             "URB status is failed during fw load\n");
                 kfree_skb(skb);
+                lbtf_deb_leave(LBTF_DEB_USB);
                 return;
         }
 
@@ -372,12 +481,17 @@ static void if_usb_receive_fwload(struct urb *urb)
                 __le32 *tmp = (__le32 *)(skb->data);
 
                 if (tmp[0] == cpu_to_le32(CMD_TYPE_INDICATION) &&
-                    tmp[1] == cpu_to_le32(MACREG_INT_CODE_FIRMWARE_READY))
+                    tmp[1] == cpu_to_le32(MACREG_INT_CODE_FIRMWARE_READY)) {
                         /* Firmware ready event received */
+                        pr_info("Firmware ready event received\n");
                         wake_up(&cardp->fw_wq);
-                else
+                } else {
+                        lbtf_deb_usb("Waiting for confirmation; got %x %x\n",
+                                    le32_to_cpu(tmp[0]), le32_to_cpu(tmp[1]));
                         if_usb_submit_rx_urb_fwload(cardp);
+                }
                 kfree_skb(skb);
+                lbtf_deb_leave(LBTF_DEB_USB);
                 return;
         }
         if (cardp->bootcmdresp <= 0) {
@@ -388,34 +502,60 @@ static void if_usb_receive_fwload(struct urb *urb)
                         if_usb_submit_rx_urb_fwload(cardp);
                         cardp->bootcmdresp = 1;
                         /* Received valid boot command response */
+                        lbtf_deb_usbd(&cardp->udev->dev,
+                                     "Received valid boot command response\n");
+                        lbtf_deb_leave(LBTF_DEB_USB);
                         return;
                 }
                 if (bcmdresp.magic != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) {
                         if (bcmdresp.magic == cpu_to_le32(CMD_TYPE_REQUEST) ||
                             bcmdresp.magic == cpu_to_le32(CMD_TYPE_DATA) ||
-                            bcmdresp.magic == cpu_to_le32(CMD_TYPE_INDICATION))
+                            bcmdresp.magic == cpu_to_le32(CMD_TYPE_INDICATION)) {
+                                if (!cardp->bootcmdresp)
+                                        pr_info("Firmware already seems alive; resetting\n");
                                 cardp->bootcmdresp = -1;
-                } else if (bcmdresp.cmd == BOOT_CMD_FW_BY_USB &&
-                           bcmdresp.result == BOOT_CMD_RESP_OK)
+                        } else {
+                                pr_info("boot cmd response wrong magic number (0x%x)\n",
+                                            le32_to_cpu(bcmdresp.magic));
+                        }
+                } else if (bcmdresp.cmd != BOOT_CMD_FW_BY_USB) {
+                        pr_info("boot cmd response cmd_tag error (%d)\n",
+                                    bcmdresp.cmd);
+                } else if (bcmdresp.result != BOOT_CMD_RESP_OK) {
+                        pr_info("boot cmd response result error (%d)\n",
+                                    bcmdresp.result);
+                } else {
                         cardp->bootcmdresp = 1;
+                        lbtf_deb_usbd(&cardp->udev->dev,
+                                     "Received valid boot command response\n");
+                }
 
                 kfree_skb(skb);
                 if_usb_submit_rx_urb_fwload(cardp);
+                lbtf_deb_leave(LBTF_DEB_USB);
                 return;
         }
 
         syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC);
         if (!syncfwheader) {
+                lbtf_deb_usbd(&cardp->udev->dev, "Failure to allocate syncfwheader\n");
                 kfree_skb(skb);
+                lbtf_deb_leave(LBTF_DEB_USB);
                 return;
         }
 
         memcpy(syncfwheader, skb->data, sizeof(struct fwsyncheader));
 
-        if (!syncfwheader->cmd)
+        if (!syncfwheader->cmd) {
+                lbtf_deb_usb2(&cardp->udev->dev, "FW received Blk with correct CRC\n");
+                lbtf_deb_usb2(&cardp->udev->dev, "FW received Blk seqnum = %d\n",
+                             le32_to_cpu(syncfwheader->seqnum));
                 cardp->CRC_OK = 1;
-        else
+        } else {
+                lbtf_deb_usbd(&cardp->udev->dev, "FW received Blk with CRC error\n");
                 cardp->CRC_OK = 0;
+        }
+
         kfree_skb(skb);
 
         /* reschedule timer for 200ms hence */
@@ -433,6 +573,7 @@ static void if_usb_receive_fwload(struct urb *urb)
 
         kfree(syncfwheader);
 
+        lbtf_deb_leave(LBTF_DEB_USB);
         return;
 }
 
@@ -444,6 +585,7 @@ static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
 {
         if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + MESSAGE_HEADER_LEN
             || recvlength < MRVDRV_MIN_PKT_LEN) {
+                lbtf_deb_usbd(&cardp->udev->dev, "Packet length is Invalid\n");
                 kfree_skb(skb);
                 return;
         }
@@ -459,6 +601,8 @@ static inline void process_cmdrequest(int recvlength, uint8_t *recvbuff,
                                       struct lbtf_private *priv)
 {
         if (recvlength > LBS_CMD_BUFFER_SIZE) {
+                lbtf_deb_usbd(&cardp->udev->dev,
+                             "The receive buffer is too large\n");
                 kfree_skb(skb);
                 return;
         }
@@ -488,16 +632,24 @@ static void if_usb_receive(struct urb *urb)
         uint32_t recvtype = 0;
         __le32 *pkt = (__le32 *) skb->data;
 
+        lbtf_deb_enter(LBTF_DEB_USB);
+
         if (recvlength) {
                 if (urb->status) {
+                        lbtf_deb_usbd(&cardp->udev->dev, "RX URB failed: %d\n",
+                                     urb->status);
                         kfree_skb(skb);
                         goto setup_for_next;
                 }
 
                 recvbuff = skb->data;
                 recvtype = le32_to_cpu(pkt[0]);
+                lbtf_deb_usbd(&cardp->udev->dev,
+                            "Recv length = 0x%x, Recv type = 0x%X\n",
+                            recvlength, recvtype);
         } else if (urb->status) {
                 kfree_skb(skb);
+                lbtf_deb_leave(LBTF_DEB_USB);
                 return;
         }
 
@@ -514,6 +666,7 @@ static void if_usb_receive(struct urb *urb)
         {
                 /* Event cause handling */
                 u32 event_cause = le32_to_cpu(pkt[1]);
+                lbtf_deb_usbd(&cardp->udev->dev, "**EVENT** 0x%X\n", event_cause);
 
                 /* Icky undocumented magic special case */
                 if (event_cause & 0xffff0000) {
@@ -528,21 +681,22 @@ static void if_usb_receive(struct urb *urb)
                 } else if (event_cause == LBTF_EVENT_BCN_SENT)
                         lbtf_bcn_sent(priv);
                 else
-                        printk(KERN_DEBUG
+                        lbtf_deb_usbd(&cardp->udev->dev,
                                "Unsupported notification %d received\n",
                                event_cause);
                 kfree_skb(skb);
                 break;
         }
         default:
-                printk(KERN_DEBUG "libertastf: unknown command type 0x%X\n",
-                             recvtype);
+                lbtf_deb_usbd(&cardp->udev->dev,
+                         "libertastf: unknown command type 0x%X\n", recvtype);
                 kfree_skb(skb);
                 break;
         }
 
 setup_for_next:
         if_usb_submit_rx_urb(cardp);
+        lbtf_deb_leave(LBTF_DEB_USB);
 }
 
 /**
@@ -561,6 +715,9 @@ static int if_usb_host_to_card(struct lbtf_private *priv, uint8_t type,
         struct if_usb_card *cardp = priv->card;
         u8 data = 0;
 
+        lbtf_deb_usbd(&cardp->udev->dev, "*** type = %u\n", type);
+        lbtf_deb_usbd(&cardp->udev->dev, "size after = %d\n", nb);
+
         if (type == MVMS_CMD) {
                 *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST);
         } else {
@@ -638,8 +795,10 @@ static int check_fwfile_format(const u8 *data, u32 totlen)
         } while (!exit);
 
         if (ret)
-                printk(KERN_INFO
-                       "libertastf: firmware file format check failed\n");
+                pr_err("firmware file format check FAIL\n");
+        else
+                lbtf_deb_fw("firmware file format check PASS\n");
+
         return ret;
 }
 
@@ -650,10 +809,12 @@ static int if_usb_prog_firmware(struct if_usb_card *cardp)
         static int reset_count = 10;
         int ret = 0;
 
+        lbtf_deb_enter(LBTF_DEB_USB);
+
         ret = request_firmware(&cardp->fw, lbtf_fw_name, &cardp->udev->dev);
         if (ret < 0) {
-                printk(KERN_INFO "libertastf: firmware %s not found\n",
-                       lbtf_fw_name);
+                pr_err("request_firmware() failed with %#x\n", ret);
+                pr_err("firmware %s not found\n", lbtf_fw_name);
                 goto done;
         }
 
@@ -662,6 +823,7 @@ static int if_usb_prog_firmware(struct if_usb_card *cardp)
 
 restart:
         if (if_usb_submit_rx_urb_fwload(cardp) < 0) {
+                lbtf_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
                 ret = -1;
                 goto release_fw;
         }
@@ -708,14 +870,13 @@ restart:
         usb_kill_urb(cardp->rx_urb);
 
         if (!cardp->fwdnldover) {
-                printk(KERN_INFO "libertastf: failed to load fw,"
-                                 " resetting device!\n");
+                pr_info("failed to load fw, resetting device!\n");
                 if (--reset_count >= 0) {
                         if_usb_reset_device(cardp);
                         goto restart;
                 }
 
-                printk(KERN_INFO "libertastf: fw download failure\n");
+                pr_info("FW download failure, time = %d ms\n", i * 100);
                 ret = -1;
                 goto release_fw;
         }
@@ -729,6 +890,7 @@ restart:
         if_usb_setup_firmware(cardp->priv);
 
  done:
+        lbtf_deb_leave_args(LBTF_DEB_USB, "ret %d", ret);
         return ret;
 }
 EXPORT_SYMBOL_GPL(if_usb_prog_firmware);
@@ -750,13 +912,19 @@ static int __init if_usb_init_module(void)
 {
         int ret = 0;
 
+        lbtf_deb_enter(LBTF_DEB_MAIN);
+
         ret = usb_register(&if_usb_driver);
+
+        lbtf_deb_leave_args(LBTF_DEB_MAIN, "ret %d", ret);
         return ret;
 }
 
 static void __exit if_usb_exit_module(void)
 {
+        lbtf_deb_enter(LBTF_DEB_MAIN);
         usb_deregister(&if_usb_driver);
+        lbtf_deb_leave(LBTF_DEB_MAIN);
 }
 
 module_init(if_usb_init_module);
diff --git a/drivers/net/wireless/libertas_tf/main.c b/drivers/net/wireless/libertas_tf/main.c
index 6ab30033c26..3b1db84addb 100644
--- a/drivers/net/wireless/libertas_tf/main.c
+++ b/drivers/net/wireless/libertas_tf/main.c
@@ -7,6 +7,7 @@
  *  the Free Software Foundation; either version 2 of the License, or (at
  *  your option) any later version.
  */
+#include "deb_defs.h"
 #include "libertas_tf.h"
 #include "linux/etherdevice.h"
 
@@ -16,7 +17,17 @@
 #define LBTF_FW_VER_MAX         0x0584ffff
 #define QOS_CONTROL_LEN         2
 
-static const char lbtf_driver_version[] = "THINFIRM-USB8388-" DRIVER_RELEASE_VERSION;
+/* Module parameters */
+unsigned int lbtf_debug;
+EXPORT_SYMBOL_GPL(lbtf_debug);
+module_param_named(libertas_tf_debug, lbtf_debug, int, 0644);
+
+static const char lbtf_driver_version[] = "THINFIRM-USB8388-" DRIVER_RELEASE_VERSION
+#ifdef DEBUG
+        "-dbg"
+#endif
+        "";
+
 struct workqueue_struct *lbtf_wq;
 
 static const struct ieee80211_channel lbtf_channels[] = {
@@ -79,6 +90,9 @@ static void lbtf_cmd_work(struct work_struct *work)
 {
         struct lbtf_private *priv = container_of(work, struct lbtf_private,
                                          cmd_work);
+
+        lbtf_deb_enter(LBTF_DEB_CMD);
+
         spin_lock_irq(&priv->driver_lock);
         /* command response? */
         if (priv->cmd_response_rxed) {
@@ -106,11 +120,16 @@ static void lbtf_cmd_work(struct work_struct *work)
         priv->cmd_timed_out = 0;
         spin_unlock_irq(&priv->driver_lock);
 
-        if (!priv->fw_ready)
+        if (!priv->fw_ready) {
+                lbtf_deb_leave_args(LBTF_DEB_CMD, "fw not ready");
                 return;
+        }
+
         /* Execute the next command */
         if (!priv->cur_cmd)
                 lbtf_execute_next_command(priv);
+
+        lbtf_deb_leave(LBTF_DEB_CMD);
 }
 
 /**
@@ -124,6 +143,7 @@ static int lbtf_setup_firmware(struct lbtf_private *priv)
 {
         int ret = -1;
 
+        lbtf_deb_enter(LBTF_DEB_FW);
         /*
          * Read priv address from HW
          */
@@ -139,6 +159,7 @@ static int lbtf_setup_firmware(struct lbtf_private *priv)
 
         ret = 0;
 done:
+        lbtf_deb_leave_args(LBTF_DEB_FW, "ret: %d", ret);
         return ret;
 }
 
@@ -150,6 +171,7 @@ static void command_timer_fn(unsigned long data)
 {
         struct lbtf_private *priv = (struct lbtf_private *)data;
         unsigned long flags;
+        lbtf_deb_enter(LBTF_DEB_CMD);
 
         spin_lock_irqsave(&priv->driver_lock, flags);
 
@@ -166,10 +188,12 @@ static void command_timer_fn(unsigned long data)
         queue_work(lbtf_wq, &priv->cmd_work);
 out:
         spin_unlock_irqrestore(&priv->driver_lock, flags);
+        lbtf_deb_leave(LBTF_DEB_CMD);
 }
 
 static int lbtf_init_adapter(struct lbtf_private *priv)
 {
+        lbtf_deb_enter(LBTF_DEB_MAIN);
         memset(priv->current_addr, 0xff, ETH_ALEN);
         mutex_init(&priv->lock);
 
@@ -186,13 +210,16 @@ static int lbtf_init_adapter(struct lbtf_private *priv)
         if (lbtf_allocate_cmd_buffer(priv))
                 return -1;
 
+        lbtf_deb_leave(LBTF_DEB_MAIN);
         return 0;
 }
 
 static void lbtf_free_adapter(struct lbtf_private *priv)
 {
+        lbtf_deb_enter(LBTF_DEB_MAIN);
         lbtf_free_cmd_buffer(priv);
         del_timer(&priv->command_timer);
+        lbtf_deb_leave(LBTF_DEB_MAIN);
 }
 
 static int lbtf_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
@@ -219,14 +246,18 @@ static void lbtf_tx_work(struct work_struct *work)
         struct sk_buff *skb = NULL;
         int err;
 
+        lbtf_deb_enter(LBTF_DEB_MACOPS | LBTF_DEB_TX);
+
         if ((priv->vif->type == NL80211_IFTYPE_AP) &&
             (!skb_queue_empty(&priv->bc_ps_buf)))
                 skb = skb_dequeue(&priv->bc_ps_buf);
         else if (priv->skb_to_tx) {
                 skb = priv->skb_to_tx;
                 priv->skb_to_tx = NULL;
-        } else
+        } else {
+                lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
                 return;
+        }
 
         len = skb->len;
         info  = IEEE80211_SKB_CB(skb);
@@ -234,6 +265,7 @@ static void lbtf_tx_work(struct work_struct *work)
 
         if (priv->surpriseremoved) {
                 dev_kfree_skb_any(skb);
+                lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
                 return;
         }
 
@@ -247,6 +279,7 @@ static void lbtf_tx_work(struct work_struct *work)
                 ETH_ALEN);
         txpd->tx_packet_length = cpu_to_le16(len);
         txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd));
+        lbtf_deb_hex(LBTF_DEB_TX, "TX Data", skb->data, min_t(unsigned int, skb->len, 100));
         BUG_ON(priv->tx_skb);
         spin_lock_irq(&priv->driver_lock);
         priv->tx_skb = skb;
@@ -255,7 +288,9 @@ static void lbtf_tx_work(struct work_struct *work)
         if (err) {
                 dev_kfree_skb_any(skb);
                 priv->tx_skb = NULL;
+                pr_err("TX error: %d", err);
         }
+        lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
 }
 
 static int lbtf_op_start(struct ieee80211_hw *hw)
@@ -264,6 +299,8 @@ static int lbtf_op_start(struct ieee80211_hw *hw)
         void *card = priv->card;
         int ret = -1;
 
+        lbtf_deb_enter(LBTF_DEB_MACOPS);
+
         if (!priv->fw_ready)
                 /* Upload firmware */
                 if (priv->hw_prog_firmware(card))
@@ -284,10 +321,12 @@ static int lbtf_op_start(struct ieee80211_hw *hw)
         }
 
         printk(KERN_INFO "libertastf: Marvell WLAN 802.11 thinfirm adapter\n");
+        lbtf_deb_leave(LBTF_DEB_MACOPS);
         return 0;
 
 err_prog_firmware:
         priv->hw_reset_device(card);
+        lbtf_deb_leave_args(LBTF_DEB_MACOPS, "error programing fw; ret=%d", ret);
         return ret;
 }
 
@@ -298,6 +337,9 @@ static void lbtf_op_stop(struct ieee80211_hw *hw)
         struct sk_buff *skb;
 
         struct cmd_ctrl_node *cmdnode;
+
+        lbtf_deb_enter(LBTF_DEB_MACOPS);
+
         /* Flush pending command nodes */
         spin_lock_irqsave(&priv->driver_lock, flags);
         list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
@@ -314,6 +356,7 @@ static void lbtf_op_stop(struct ieee80211_hw *hw)
         priv->radioon = RADIO_OFF;
         lbtf_set_radio_control(priv);
 
+        lbtf_deb_leave(LBTF_DEB_MACOPS);
         return;
 }
 
@@ -321,6 +364,7 @@ static int lbtf_op_add_interface(struct ieee80211_hw *hw,
                         struct ieee80211_vif *vif)
 {
         struct lbtf_private *priv = hw->priv;
+        lbtf_deb_enter(LBTF_DEB_MACOPS);
         if (priv->vif != NULL)
                 return -EOPNOTSUPP;
 
@@ -338,6 +382,7 @@ static int lbtf_op_add_interface(struct ieee80211_hw *hw,
                 return -EOPNOTSUPP;
         }
         lbtf_set_mac_address(priv, (u8 *) vif->addr);
+        lbtf_deb_leave(LBTF_DEB_MACOPS);
         return 0;
 }
 
@@ -345,6 +390,7 @@ static void lbtf_op_remove_interface(struct ieee80211_hw *hw,
                         struct ieee80211_vif *vif)
 {
         struct lbtf_private *priv = hw->priv;
+        lbtf_deb_enter(LBTF_DEB_MACOPS);
 
         if (priv->vif->type == NL80211_IFTYPE_AP ||
             priv->vif->type == NL80211_IFTYPE_MESH_POINT)
@@ -352,17 +398,20 @@ static void lbtf_op_remove_interface(struct ieee80211_hw *hw,
         lbtf_set_mode(priv, LBTF_PASSIVE_MODE);
         lbtf_set_bssid(priv, 0, NULL);
         priv->vif = NULL;
+        lbtf_deb_leave(LBTF_DEB_MACOPS);
 }
 
 static int lbtf_op_config(struct ieee80211_hw *hw, u32 changed)
 {
         struct lbtf_private *priv = hw->priv;
         struct ieee80211_conf *conf = &hw->conf;
+        lbtf_deb_enter(LBTF_DEB_MACOPS);
 
         if (conf->channel->center_freq != priv->cur_freq) {
                 priv->cur_freq = conf->channel->center_freq;
                 lbtf_set_channel(priv, conf->channel->hw_value);
         }
+        lbtf_deb_leave(LBTF_DEB_MACOPS);
         return 0;
 }
 
@@ -395,11 +444,16 @@ static void lbtf_op_configure_filter(struct ieee80211_hw *hw,
 {
         struct lbtf_private *priv = hw->priv;
         int old_mac_control = priv->mac_control;
+
+        lbtf_deb_enter(LBTF_DEB_MACOPS);
+
         changed_flags &= SUPPORTED_FIF_FLAGS;
         *new_flags &= SUPPORTED_FIF_FLAGS;
 
-        if (!changed_flags)
+        if (!changed_flags) {
+                lbtf_deb_leave(LBTF_DEB_MACOPS);
                 return;
+        }
 
         if (*new_flags & (FIF_PROMISC_IN_BSS))
                 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
@@ -425,6 +479,8 @@ static void lbtf_op_configure_filter(struct ieee80211_hw *hw,
 
         if (priv->mac_control != old_mac_control)
                 lbtf_set_mac_control(priv);
+
+        lbtf_deb_leave(LBTF_DEB_MACOPS);
 }
 
 static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw,
@@ -434,6 +490,7 @@ static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw,
 {
         struct lbtf_private *priv = hw->priv;
         struct sk_buff *beacon;
+        lbtf_deb_enter(LBTF_DEB_MACOPS);
 
         if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_INT)) {
                 switch (priv->vif->type) {
@@ -464,6 +521,8 @@ static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw,
                         priv->preamble = CMD_TYPE_LONG_PREAMBLE;
                 lbtf_set_radio_control(priv);
         }
+
+        lbtf_deb_leave(LBTF_DEB_MACOPS);
 }
 
 static const struct ieee80211_ops lbtf_ops = {
@@ -486,6 +545,8 @@ int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb)
         unsigned int flags;
         struct ieee80211_hdr *hdr;
 
+        lbtf_deb_enter(LBTF_DEB_RX);
+
         prxpd = (struct rxpd *) skb->data;
 
         stats.flag = 0;
@@ -516,7 +577,15 @@ int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb)
         }
 
         memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats));
+
+        lbtf_deb_rx("rx data: skb->len-sizeof(RxPd) = %d-%zd = %zd\n",
+               skb->len, sizeof(struct rxpd), skb->len - sizeof(struct rxpd));
+        lbtf_deb_hex(LBTF_DEB_RX, "RX Data", skb->data,
+                     min_t(unsigned int, skb->len, 100));
+
         ieee80211_rx_irqsafe(priv->hw, skb);
+
+        lbtf_deb_leave(LBTF_DEB_RX);
         return 0;
 }
 EXPORT_SYMBOL_GPL(lbtf_rx);
@@ -533,6 +602,8 @@ struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev)
         struct ieee80211_hw *hw;
         struct lbtf_private *priv = NULL;
 
+        lbtf_deb_enter(LBTF_DEB_MAIN);
+
         hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops);
         if (!hw)
                 goto done;
@@ -575,6 +646,7 @@ err_init_adapter:
         priv = NULL;
 
 done:
+        lbtf_deb_leave_args(LBTF_DEB_MAIN, "priv %p", priv);
         return priv;
 }
 EXPORT_SYMBOL_GPL(lbtf_add_card);
@@ -584,6 +656,8 @@ int lbtf_remove_card(struct lbtf_private *priv)
 {
         struct ieee80211_hw *hw = priv->hw;
 
+        lbtf_deb_enter(LBTF_DEB_MAIN);
+
         priv->surpriseremoved = 1;
         del_timer(&priv->command_timer);
         lbtf_free_adapter(priv);
@@ -591,6 +665,7 @@ int lbtf_remove_card(struct lbtf_private *priv)
         ieee80211_unregister_hw(hw);
         ieee80211_free_hw(hw);
 
+    lbtf_deb_leave(LBTF_DEB_MAIN);
         return 0;
 }
 EXPORT_SYMBOL_GPL(lbtf_remove_card);
@@ -649,17 +724,21 @@ EXPORT_SYMBOL_GPL(lbtf_bcn_sent);
 
 static int __init lbtf_init_module(void)
 {
+        lbtf_deb_enter(LBTF_DEB_MAIN);
         lbtf_wq = create_workqueue("libertastf");
         if (lbtf_wq == NULL) {
                 printk(KERN_ERR "libertastf: couldn't create workqueue\n");
                 return -ENOMEM;
         }
+        lbtf_deb_leave(LBTF_DEB_MAIN);
         return 0;
 }
 
 static void __exit lbtf_exit_module(void)
 {
+        lbtf_deb_enter(LBTF_DEB_MAIN);
         destroy_workqueue(lbtf_wq);
+        lbtf_deb_leave(LBTF_DEB_MAIN);
 }
 
 module_init(lbtf_init_module);