1 files changed, 662 insertions, 0 deletions

diff --git a/drivers/net/wireless/libertas_tf/main.c b/drivers/net/wireless/libertas_tf/main.c
new file mode 100644
index 000000000000..feff945ad856
--- /dev/null
+++ b/drivers/net/wireless/libertas_tf/main.c
@@ -0,0 +1,662 @@
+/*
+ *  Copyright (C) 2008, cozybit Inc.
+ *  Copyright (C) 2003-2006, Marvell International Ltd.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or (at
+ *  your option) any later version.
+ */
+#include "libertas_tf.h"
+#include "linux/etherdevice.h"
+
+#define DRIVER_RELEASE_VERSION "004.p0"
+/* thinfirm version: 5.132.X.pX */
+#define LBTF_FW_VER_MIN         0x05840300
+#define LBTF_FW_VER_MAX         0x0584ffff
+#define QOS_CONTROL_LEN         2
+
+static const char lbtf_driver_version[] = "THINFIRM-USB8388-" DRIVER_RELEASE_VERSION;
+struct workqueue_struct *lbtf_wq;
+
+static const struct ieee80211_channel lbtf_channels[] = {
+        { .center_freq = 2412, .hw_value = 1 },
+        { .center_freq = 2417, .hw_value = 2 },
+        { .center_freq = 2422, .hw_value = 3 },
+        { .center_freq = 2427, .hw_value = 4 },
+        { .center_freq = 2432, .hw_value = 5 },
+        { .center_freq = 2437, .hw_value = 6 },
+        { .center_freq = 2442, .hw_value = 7 },
+        { .center_freq = 2447, .hw_value = 8 },
+        { .center_freq = 2452, .hw_value = 9 },
+        { .center_freq = 2457, .hw_value = 10 },
+        { .center_freq = 2462, .hw_value = 11 },
+        { .center_freq = 2467, .hw_value = 12 },
+        { .center_freq = 2472, .hw_value = 13 },
+        { .center_freq = 2484, .hw_value = 14 },
+};
+
+/* This table contains the hardware specific values for the modulation rates. */
+static const struct ieee80211_rate lbtf_rates[] = {
+        { .bitrate = 10,
+          .hw_value = 0, },
+        { .bitrate = 20,
+          .hw_value = 1,
+          .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+        { .bitrate = 55,
+          .hw_value = 2,
+          .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+        { .bitrate = 110,
+          .hw_value = 3,
+          .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+        { .bitrate = 60,
+          .hw_value = 5,
+          .flags = 0 },
+        { .bitrate = 90,
+          .hw_value = 6,
+          .flags = 0 },
+        { .bitrate = 120,
+          .hw_value = 7,
+          .flags = 0 },
+        { .bitrate = 180,
+          .hw_value = 8,
+          .flags = 0 },
+        { .bitrate = 240,
+          .hw_value = 9,
+          .flags = 0 },
+        { .bitrate = 360,
+          .hw_value = 10,
+          .flags = 0 },
+        { .bitrate = 480,
+          .hw_value = 11,
+          .flags = 0 },
+        { .bitrate = 540,
+          .hw_value = 12,
+          .flags = 0 },
+};
+
+static void lbtf_cmd_work(struct work_struct *work)
+{
+        struct lbtf_private *priv = container_of(work, struct lbtf_private,
+                                         cmd_work);
+        spin_lock_irq(&priv->driver_lock);
+        /* command response? */
+        if (priv->cmd_response_rxed) {
+                priv->cmd_response_rxed = 0;
+                spin_unlock_irq(&priv->driver_lock);
+                lbtf_process_rx_command(priv);
+                spin_lock_irq(&priv->driver_lock);
+        }
+
+        if (priv->cmd_timed_out && priv->cur_cmd) {
+                struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
+
+                if (++priv->nr_retries > 10) {
+                        lbtf_complete_command(priv, cmdnode,
+                                              -ETIMEDOUT);
+                        priv->nr_retries = 0;
+                } else {
+                        priv->cur_cmd = NULL;
+
+                        /* Stick it back at the _top_ of the pending
+                         * queue for immediate resubmission */
+                        list_add(&cmdnode->list, &priv->cmdpendingq);
+                }
+        }
+        priv->cmd_timed_out = 0;
+        spin_unlock_irq(&priv->driver_lock);
+
+        if (!priv->fw_ready)
+                return;
+        /* Execute the next command */
+        if (!priv->cur_cmd)
+                lbtf_execute_next_command(priv);
+}
+
+/**
+ *  lbtf_setup_firmware: initialize firmware.
+ *
+ *  @priv    A pointer to struct lbtf_private structure
+ *
+ *  Returns: 0 on success.
+ */
+static int lbtf_setup_firmware(struct lbtf_private *priv)
+{
+        int ret = -1;
+
+        /*
+         * Read priv address from HW
+         */
+        memset(priv->current_addr, 0xff, ETH_ALEN);
+        ret = lbtf_update_hw_spec(priv);
+        if (ret) {
+                ret = -1;
+                goto done;
+        }
+
+        lbtf_set_mac_control(priv);
+        lbtf_set_radio_control(priv);
+
+        ret = 0;
+done:
+        return ret;
+}
+
+/**
+ *  This function handles the timeout of command sending.
+ *  It will re-send the same command again.
+ */
+static void command_timer_fn(unsigned long data)
+{
+        struct lbtf_private *priv = (struct lbtf_private *)data;
+        unsigned long flags;
+
+        spin_lock_irqsave(&priv->driver_lock, flags);
+
+        if (!priv->cur_cmd) {
+                printk(KERN_DEBUG "libertastf: command timer expired; "
+                                  "no pending command\n");
+                goto out;
+        }
+
+        printk(KERN_DEBUG "libertas: command %x timed out\n",
+                le16_to_cpu(priv->cur_cmd->cmdbuf->command));
+
+        priv->cmd_timed_out = 1;
+        queue_work(lbtf_wq, &priv->cmd_work);
+out:
+        spin_unlock_irqrestore(&priv->driver_lock, flags);
+}
+
+static int lbtf_init_adapter(struct lbtf_private *priv)
+{
+        memset(priv->current_addr, 0xff, ETH_ALEN);
+        mutex_init(&priv->lock);
+
+        priv->vif = NULL;
+        setup_timer(&priv->command_timer, command_timer_fn,
+                (unsigned long)priv);
+
+        INIT_LIST_HEAD(&priv->cmdfreeq);
+        INIT_LIST_HEAD(&priv->cmdpendingq);
+
+        spin_lock_init(&priv->driver_lock);
+
+        /* Allocate the command buffers */
+        if (lbtf_allocate_cmd_buffer(priv))
+                return -1;
+
+        return 0;
+}
+
+static void lbtf_free_adapter(struct lbtf_private *priv)
+{
+        lbtf_free_cmd_buffer(priv);
+        del_timer(&priv->command_timer);
+}
+
+static int lbtf_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+{
+        struct lbtf_private *priv = hw->priv;
+
+        priv->skb_to_tx = skb;
+        queue_work(lbtf_wq, &priv->tx_work);
+        /*
+         * queue will be restarted when we receive transmission feedback if
+         * there are no buffered multicast frames to send
+         */
+        ieee80211_stop_queues(priv->hw);
+        return 0;
+}
+
+static void lbtf_tx_work(struct work_struct *work)
+{
+        struct lbtf_private *priv = container_of(work, struct lbtf_private,
+                                         tx_work);
+        unsigned int len;
+        struct ieee80211_tx_info *info;
+        struct txpd *txpd;
+        struct sk_buff *skb = NULL;
+        int err;
+
+        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
+                return;
+
+        len = skb->len;
+        info  = IEEE80211_SKB_CB(skb);
+        txpd = (struct txpd *)  skb_push(skb, sizeof(struct txpd));
+
+        if (priv->surpriseremoved) {
+                dev_kfree_skb_any(skb);
+                return;
+        }
+
+        memset(txpd, 0, sizeof(struct txpd));
+        /* Activate per-packet rate selection */
+        txpd->tx_control |= cpu_to_le32(MRVL_PER_PACKET_RATE |
+                             ieee80211_get_tx_rate(priv->hw, info)->hw_value);
+
+        /* copy destination address from 802.11 header */
+        memcpy(txpd->tx_dest_addr_high, skb->data + sizeof(struct txpd) + 4,
+                ETH_ALEN);
+        txpd->tx_packet_length = cpu_to_le16(len);
+        txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd));
+        BUG_ON(priv->tx_skb);
+        spin_lock_irq(&priv->driver_lock);
+        priv->tx_skb = skb;
+        err = priv->hw_host_to_card(priv, MVMS_DAT, skb->data, skb->len);
+        spin_unlock_irq(&priv->driver_lock);
+        if (err) {
+                dev_kfree_skb_any(skb);
+                priv->tx_skb = NULL;
+        }
+}
+
+static int lbtf_op_start(struct ieee80211_hw *hw)
+{
+        struct lbtf_private *priv = hw->priv;
+        void *card = priv->card;
+        int ret = -1;
+
+        if (!priv->fw_ready)
+                /* Upload firmware */
+                if (priv->hw_prog_firmware(card))
+                        goto err_prog_firmware;
+
+        /* poke the firmware */
+        priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
+        priv->radioon = RADIO_ON;
+        priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
+        ret = lbtf_setup_firmware(priv);
+        if (ret)
+                goto err_prog_firmware;
+
+        if ((priv->fwrelease < LBTF_FW_VER_MIN) ||
+            (priv->fwrelease > LBTF_FW_VER_MAX)) {
+                ret = -1;
+                goto err_prog_firmware;
+        }
+
+        printk(KERN_INFO "libertastf: Marvell WLAN 802.11 thinfirm adapter\n");
+        return 0;
+
+err_prog_firmware:
+        priv->hw_reset_device(card);
+        return ret;
+}
+
+static void lbtf_op_stop(struct ieee80211_hw *hw)
+{
+        struct lbtf_private *priv = hw->priv;
+        unsigned long flags;
+        struct sk_buff *skb;
+
+        struct cmd_ctrl_node *cmdnode;
+        /* Flush pending command nodes */
+        spin_lock_irqsave(&priv->driver_lock, flags);
+        list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
+                cmdnode->result = -ENOENT;
+                cmdnode->cmdwaitqwoken = 1;
+                wake_up_interruptible(&cmdnode->cmdwait_q);
+        }
+
+        spin_unlock_irqrestore(&priv->driver_lock, flags);
+        cancel_work_sync(&priv->cmd_work);
+        cancel_work_sync(&priv->tx_work);
+        while ((skb = skb_dequeue(&priv->bc_ps_buf)))
+                dev_kfree_skb_any(skb);
+        priv->radioon = RADIO_OFF;
+        lbtf_set_radio_control(priv);
+
+        return;
+}
+
+static int lbtf_op_add_interface(struct ieee80211_hw *hw,
+                        struct ieee80211_if_init_conf *conf)
+{
+        struct lbtf_private *priv = hw->priv;
+        if (priv->vif != NULL)
+                return -EOPNOTSUPP;
+
+        priv->vif = conf->vif;
+        switch (conf->type) {
+        case NL80211_IFTYPE_MESH_POINT:
+        case NL80211_IFTYPE_AP:
+                lbtf_set_mode(priv, LBTF_AP_MODE);
+                break;
+        case NL80211_IFTYPE_STATION:
+                lbtf_set_mode(priv, LBTF_STA_MODE);
+                break;
+        default:
+                priv->vif = NULL;
+                return -EOPNOTSUPP;
+        }
+        lbtf_set_mac_address(priv, (u8 *) conf->mac_addr);
+        return 0;
+}
+
+static void lbtf_op_remove_interface(struct ieee80211_hw *hw,
+                        struct ieee80211_if_init_conf *conf)
+{
+        struct lbtf_private *priv = hw->priv;
+
+        if (priv->vif->type == NL80211_IFTYPE_AP ||
+            priv->vif->type == NL80211_IFTYPE_MESH_POINT)
+                lbtf_beacon_ctrl(priv, 0, 0);
+        lbtf_set_mode(priv, LBTF_PASSIVE_MODE);
+        lbtf_set_bssid(priv, 0, NULL);
+        priv->vif = NULL;
+}
+
+static int lbtf_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
+{
+        struct lbtf_private *priv = hw->priv;
+        if (conf->channel->center_freq != priv->cur_freq) {
+                priv->cur_freq = conf->channel->center_freq;
+                lbtf_set_channel(priv, conf->channel->hw_value);
+        }
+        return 0;
+}
+
+static int lbtf_op_config_interface(struct ieee80211_hw *hw,
+                        struct ieee80211_vif *vif,
+                        struct ieee80211_if_conf *conf)
+{
+        struct lbtf_private *priv = hw->priv;
+        struct sk_buff *beacon;
+
+        switch (priv->vif->type) {
+        case NL80211_IFTYPE_AP:
+        case NL80211_IFTYPE_MESH_POINT:
+                beacon = ieee80211_beacon_get(hw, vif);
+                if (beacon) {
+                        lbtf_beacon_set(priv, beacon);
+                        kfree_skb(beacon);
+                        lbtf_beacon_ctrl(priv, 1, hw->conf.beacon_int);
+                }
+                break;
+        default:
+                break;
+        }
+
+        if (conf->bssid) {
+                u8 null_bssid[ETH_ALEN] = {0};
+                bool activate = compare_ether_addr(conf->bssid, null_bssid);
+                lbtf_set_bssid(priv, activate, conf->bssid);
+        }
+
+        return 0;
+}
+
+#define SUPPORTED_FIF_FLAGS  (FIF_PROMISC_IN_BSS | FIF_ALLMULTI)
+static void lbtf_op_configure_filter(struct ieee80211_hw *hw,
+                        unsigned int changed_flags,
+                        unsigned int *new_flags,
+                        int mc_count, struct dev_mc_list *mclist)
+{
+        struct lbtf_private *priv = hw->priv;
+        int old_mac_control = priv->mac_control;
+        int i;
+        changed_flags &= SUPPORTED_FIF_FLAGS;
+        *new_flags &= SUPPORTED_FIF_FLAGS;
+
+        if (!changed_flags)
+                return;
+
+        if (*new_flags & (FIF_PROMISC_IN_BSS))
+                priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
+        else
+                priv->mac_control &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
+        if (*new_flags & (FIF_ALLMULTI) ||
+            mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE) {
+                priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
+                priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
+        } else if (mc_count) {
+                priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
+                priv->mac_control &= ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
+                priv->nr_of_multicastmacaddr = mc_count;
+                for (i = 0; i < mc_count; i++) {
+                        if (!mclist)
+                                break;
+                        memcpy(&priv->multicastlist[i], mclist->da_addr,
+                                        ETH_ALEN);
+                        mclist = mclist->next;
+                }
+                lbtf_cmd_set_mac_multicast_addr(priv);
+        } else {
+                priv->mac_control &= ~(CMD_ACT_MAC_MULTICAST_ENABLE |
+                                       CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
+                if (priv->nr_of_multicastmacaddr) {
+                        priv->nr_of_multicastmacaddr = 0;
+                        lbtf_cmd_set_mac_multicast_addr(priv);
+                }
+        }
+
+
+        if (priv->mac_control != old_mac_control)
+                lbtf_set_mac_control(priv);
+}
+
+static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw,
+                        struct ieee80211_vif *vif,
+                        struct ieee80211_bss_conf *bss_conf,
+                        u32 changes)
+{
+        struct lbtf_private *priv = hw->priv;
+
+        if (changes & BSS_CHANGED_ERP_PREAMBLE) {
+                if (bss_conf->use_short_preamble)
+                        priv->preamble = CMD_TYPE_SHORT_PREAMBLE;
+                else
+                        priv->preamble = CMD_TYPE_LONG_PREAMBLE;
+                lbtf_set_radio_control(priv);
+        }
+
+        return;
+}
+
+static const struct ieee80211_ops lbtf_ops = {
+        .tx                     = lbtf_op_tx,
+        .start                  = lbtf_op_start,
+        .stop                   = lbtf_op_stop,
+        .add_interface          = lbtf_op_add_interface,
+        .remove_interface       = lbtf_op_remove_interface,
+        .config                 = lbtf_op_config,
+        .config_interface       = lbtf_op_config_interface,
+        .configure_filter       = lbtf_op_configure_filter,
+        .bss_info_changed       = lbtf_op_bss_info_changed,
+};
+
+int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb)
+{
+        struct ieee80211_rx_status stats;
+        struct rxpd *prxpd;
+        int need_padding;
+        unsigned int flags;
+        struct ieee80211_hdr *hdr;
+
+        prxpd = (struct rxpd *) skb->data;
+
+        stats.flag = 0;
+        if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK)))
+                stats.flag |= RX_FLAG_FAILED_FCS_CRC;
+        stats.freq = priv->cur_freq;
+        stats.band = IEEE80211_BAND_2GHZ;
+        stats.signal = prxpd->snr;
+        stats.noise = prxpd->nf;
+        stats.qual = prxpd->snr - prxpd->nf;
+        /* Marvell rate index has a hole at value 4 */
+        if (prxpd->rx_rate > 4)
+                --prxpd->rx_rate;
+        stats.rate_idx = prxpd->rx_rate;
+        skb_pull(skb, sizeof(struct rxpd));
+
+        hdr = (struct ieee80211_hdr *)skb->data;
+        flags = le32_to_cpu(*(__le32 *)(skb->data + 4));
+
+        need_padding = ieee80211_is_data_qos(hdr->frame_control);
+        need_padding ^= ieee80211_has_a4(hdr->frame_control);
+        need_padding ^= ieee80211_is_data_qos(hdr->frame_control) &&
+                        (*ieee80211_get_qos_ctl(hdr) &
+                         IEEE80211_QOS_CONTROL_A_MSDU_PRESENT);
+
+        if (need_padding) {
+                memmove(skb->data + 2, skb->data, skb->len);
+                skb_reserve(skb, 2);
+        }
+
+        ieee80211_rx_irqsafe(priv->hw, skb, &stats);
+        return 0;
+}
+EXPORT_SYMBOL_GPL(lbtf_rx);
+
+/**
+ * lbtf_add_card: Add and initialize the card, no fw upload yet.
+ *
+ *  @card    A pointer to card
+ *
+ *  Returns: pointer to struct lbtf_priv.
+ */
+struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev)
+{
+        struct ieee80211_hw *hw;
+        struct lbtf_private *priv = NULL;
+
+        hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops);
+        if (!hw)
+                goto done;
+
+        priv = hw->priv;
+        if (lbtf_init_adapter(priv))
+                goto err_init_adapter;
+
+        priv->hw = hw;
+        priv->card = card;
+        priv->tx_skb = NULL;
+
+        hw->queues = 1;
+        hw->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
+        hw->extra_tx_headroom = sizeof(struct txpd);
+        memcpy(priv->channels, lbtf_channels, sizeof(lbtf_channels));
+        memcpy(priv->rates, lbtf_rates, sizeof(lbtf_rates));
+        priv->band.n_bitrates = ARRAY_SIZE(lbtf_rates);
+        priv->band.bitrates = priv->rates;
+        priv->band.n_channels = ARRAY_SIZE(lbtf_channels);
+        priv->band.channels = priv->channels;
+        hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
+        skb_queue_head_init(&priv->bc_ps_buf);
+
+        SET_IEEE80211_DEV(hw, dmdev);
+
+        INIT_WORK(&priv->cmd_work, lbtf_cmd_work);
+        INIT_WORK(&priv->tx_work, lbtf_tx_work);
+        if (ieee80211_register_hw(hw))
+                goto err_init_adapter;
+
+        goto done;
+
+err_init_adapter:
+        lbtf_free_adapter(priv);
+        ieee80211_free_hw(hw);
+        priv = NULL;
+
+done:
+        return priv;
+}
+EXPORT_SYMBOL_GPL(lbtf_add_card);
+
+
+int lbtf_remove_card(struct lbtf_private *priv)
+{
+        struct ieee80211_hw *hw = priv->hw;
+
+        priv->surpriseremoved = 1;
+        del_timer(&priv->command_timer);
+        lbtf_free_adapter(priv);
+        priv->hw = NULL;
+        ieee80211_unregister_hw(hw);
+        ieee80211_free_hw(hw);
+
+        return 0;
+}
+EXPORT_SYMBOL_GPL(lbtf_remove_card);
+
+void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail)
+{
+        struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
+        memset(&info->status, 0, sizeof(info->status));
+        /*
+         * Commented out, otherwise we never go beyond 1Mbit/s using mac80211
+         * default pid rc algorithm.
+         *
+         * info->status.retry_count = MRVL_DEFAULT_RETRIES - retrycnt;
+         */
+        info->status.excessive_retries = fail ? 1 : 0;
+        if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail)
+                info->flags |= IEEE80211_TX_STAT_ACK;
+        skb_pull(priv->tx_skb, sizeof(struct txpd));
+        ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
+        priv->tx_skb = NULL;
+        if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf))
+                ieee80211_wake_queues(priv->hw);
+        else
+                queue_work(lbtf_wq, &priv->tx_work);
+}
+EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback);
+
+void lbtf_bcn_sent(struct lbtf_private *priv)
+{
+        struct sk_buff *skb = NULL;
+
+        if (priv->vif->type != NL80211_IFTYPE_AP)
+                return;
+
+        if (skb_queue_empty(&priv->bc_ps_buf)) {
+                bool tx_buff_bc = 0;
+
+                while ((skb = ieee80211_get_buffered_bc(priv->hw, priv->vif))) {
+                        skb_queue_tail(&priv->bc_ps_buf, skb);
+                        tx_buff_bc = 1;
+                }
+                if (tx_buff_bc) {
+                        ieee80211_stop_queues(priv->hw);
+                        queue_work(lbtf_wq, &priv->tx_work);
+                }
+        }
+
+        skb = ieee80211_beacon_get(priv->hw, priv->vif);
+
+        if (skb) {
+                lbtf_beacon_set(priv, skb);
+                kfree_skb(skb);
+        }
+}
+EXPORT_SYMBOL_GPL(lbtf_bcn_sent);
+
+static int __init lbtf_init_module(void)
+{
+        lbtf_wq = create_workqueue("libertastf");
+        if (lbtf_wq == NULL) {
+                printk(KERN_ERR "libertastf: couldn't create workqueue\n");
+                return -ENOMEM;
+        }
+        return 0;
+}
+
+static void __exit lbtf_exit_module(void)
+{
+        destroy_workqueue(lbtf_wq);
+}
+
+module_init(lbtf_init_module);
+module_exit(lbtf_exit_module);
+
+MODULE_DESCRIPTION("Libertas WLAN Thinfirm Driver Library");
+MODULE_AUTHOR("Cozybit Inc.");
+MODULE_LICENSE("GPL");