linux/drivers/bluetooth/btmrvl_main.c
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   1/**
   2 * Marvell Bluetooth driver
   3 *
   4 * Copyright (C) 2009, Marvell International Ltd.
   5 *
   6 * This software file (the "File") is distributed by Marvell International
   7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
   8 * (the "License").  You may use, redistribute and/or modify this File in
   9 * accordance with the terms and conditions of the License, a copy of which
  10 * is available by writing to the Free Software Foundation, Inc.,
  11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  13 *
  14 *
  15 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  16 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  17 * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  18 * this warranty disclaimer.
  19 **/
  20
  21#include <linux/module.h>
  22
  23#include <net/bluetooth/bluetooth.h>
  24#include <net/bluetooth/hci_core.h>
  25
  26#include "btmrvl_drv.h"
  27
  28#define VERSION "1.0"
  29
  30/*
  31 * This function is called by interface specific interrupt handler.
  32 * It updates Power Save & Host Sleep states, and wakes up the main
  33 * thread.
  34 */
  35void btmrvl_interrupt(struct btmrvl_private *priv)
  36{
  37        priv->adapter->ps_state = PS_AWAKE;
  38
  39        priv->adapter->wakeup_tries = 0;
  40
  41        priv->adapter->int_count++;
  42
  43        wake_up_interruptible(&priv->main_thread.wait_q);
  44}
  45EXPORT_SYMBOL_GPL(btmrvl_interrupt);
  46
  47bool btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
  48{
  49        struct hci_event_hdr *hdr = (void *) skb->data;
  50
  51        if (hdr->evt == HCI_EV_CMD_COMPLETE) {
  52                struct hci_ev_cmd_complete *ec;
  53                u16 opcode, ocf, ogf;
  54
  55                ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
  56                opcode = __le16_to_cpu(ec->opcode);
  57                ocf = hci_opcode_ocf(opcode);
  58                ogf = hci_opcode_ogf(opcode);
  59
  60                if (ocf == BT_CMD_MODULE_CFG_REQ &&
  61                                        priv->btmrvl_dev.sendcmdflag) {
  62                        priv->btmrvl_dev.sendcmdflag = false;
  63                        priv->adapter->cmd_complete = true;
  64                        wake_up_interruptible(&priv->adapter->cmd_wait_q);
  65                }
  66
  67                if (ogf == OGF) {
  68                        BT_DBG("vendor event skipped: ogf 0x%4.4x ocf 0x%4.4x",
  69                               ogf, ocf);
  70                        kfree_skb(skb);
  71                        return false;
  72                }
  73        }
  74
  75        return true;
  76}
  77EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
  78
  79int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
  80{
  81        struct btmrvl_adapter *adapter = priv->adapter;
  82        struct btmrvl_event *event;
  83        int ret = 0;
  84
  85        event = (struct btmrvl_event *) skb->data;
  86        if (event->ec != 0xff) {
  87                BT_DBG("Not Marvell Event=%x", event->ec);
  88                ret = -EINVAL;
  89                goto exit;
  90        }
  91
  92        switch (event->data[0]) {
  93        case BT_CMD_AUTO_SLEEP_MODE:
  94                if (!event->data[2]) {
  95                        if (event->data[1] == BT_PS_ENABLE)
  96                                adapter->psmode = 1;
  97                        else
  98                                adapter->psmode = 0;
  99                        BT_DBG("PS Mode:%s",
 100                                (adapter->psmode) ? "Enable" : "Disable");
 101                } else {
 102                        BT_DBG("PS Mode command failed");
 103                }
 104                break;
 105
 106        case BT_CMD_HOST_SLEEP_CONFIG:
 107                if (!event->data[3])
 108                        BT_DBG("gpio=%x, gap=%x", event->data[1],
 109                                                        event->data[2]);
 110                else
 111                        BT_DBG("HSCFG command failed");
 112                break;
 113
 114        case BT_CMD_HOST_SLEEP_ENABLE:
 115                if (!event->data[1]) {
 116                        adapter->hs_state = HS_ACTIVATED;
 117                        if (adapter->psmode)
 118                                adapter->ps_state = PS_SLEEP;
 119                        wake_up_interruptible(&adapter->cmd_wait_q);
 120                        BT_DBG("HS ACTIVATED!");
 121                } else {
 122                        BT_DBG("HS Enable failed");
 123                }
 124                break;
 125
 126        case BT_CMD_MODULE_CFG_REQ:
 127                if (priv->btmrvl_dev.sendcmdflag &&
 128                                event->data[1] == MODULE_BRINGUP_REQ) {
 129                        BT_DBG("EVENT:%s",
 130                                ((event->data[2] == MODULE_BROUGHT_UP) ||
 131                                (event->data[2] == MODULE_ALREADY_UP)) ?
 132                                "Bring-up succeed" : "Bring-up failed");
 133
 134                        if (event->length > 3 && event->data[3])
 135                                priv->btmrvl_dev.dev_type = HCI_AMP;
 136                        else
 137                                priv->btmrvl_dev.dev_type = HCI_BREDR;
 138
 139                        BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
 140                } else if (priv->btmrvl_dev.sendcmdflag &&
 141                                event->data[1] == MODULE_SHUTDOWN_REQ) {
 142                        BT_DBG("EVENT:%s", (event->data[2]) ?
 143                                "Shutdown failed" : "Shutdown succeed");
 144                } else {
 145                        BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
 146                        ret = -EINVAL;
 147                }
 148                break;
 149
 150        case BT_EVENT_POWER_STATE:
 151                if (event->data[1] == BT_PS_SLEEP)
 152                        adapter->ps_state = PS_SLEEP;
 153                BT_DBG("EVENT:%s",
 154                        (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
 155                break;
 156
 157        default:
 158                BT_DBG("Unknown Event=%d", event->data[0]);
 159                ret = -EINVAL;
 160                break;
 161        }
 162
 163exit:
 164        if (!ret)
 165                kfree_skb(skb);
 166
 167        return ret;
 168}
 169EXPORT_SYMBOL_GPL(btmrvl_process_event);
 170
 171int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd)
 172{
 173        struct sk_buff *skb;
 174        struct btmrvl_cmd *cmd;
 175        int ret = 0;
 176
 177        skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
 178        if (skb == NULL) {
 179                BT_ERR("No free skb");
 180                return -ENOMEM;
 181        }
 182
 183        cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
 184        cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_MODULE_CFG_REQ));
 185        cmd->length = 1;
 186        cmd->data[0] = subcmd;
 187
 188        bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
 189
 190        skb->dev = (void *) priv->btmrvl_dev.hcidev;
 191        skb_queue_head(&priv->adapter->tx_queue, skb);
 192
 193        priv->btmrvl_dev.sendcmdflag = true;
 194
 195        priv->adapter->cmd_complete = false;
 196
 197        BT_DBG("Queue module cfg Command");
 198
 199        wake_up_interruptible(&priv->main_thread.wait_q);
 200
 201        if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
 202                                priv->adapter->cmd_complete,
 203                                msecs_to_jiffies(WAIT_UNTIL_CMD_RESP))) {
 204                ret = -ETIMEDOUT;
 205                BT_ERR("module_cfg_cmd(%x): timeout: %d",
 206                                        subcmd, priv->btmrvl_dev.sendcmdflag);
 207        }
 208
 209        BT_DBG("module cfg Command done");
 210
 211        return ret;
 212}
 213EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
 214
 215int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
 216{
 217        struct sk_buff *skb;
 218        struct btmrvl_cmd *cmd;
 219
 220        skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
 221        if (!skb) {
 222                BT_ERR("No free skb");
 223                return -ENOMEM;
 224        }
 225
 226        cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
 227        cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF,
 228                                                   BT_CMD_HOST_SLEEP_CONFIG));
 229        cmd->length = 2;
 230        cmd->data[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
 231        cmd->data[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
 232
 233        bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
 234
 235        skb->dev = (void *) priv->btmrvl_dev.hcidev;
 236        skb_queue_head(&priv->adapter->tx_queue, skb);
 237
 238        BT_DBG("Queue HSCFG Command, gpio=0x%x, gap=0x%x", cmd->data[0],
 239               cmd->data[1]);
 240
 241        return 0;
 242}
 243EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
 244
 245int btmrvl_enable_ps(struct btmrvl_private *priv)
 246{
 247        struct sk_buff *skb;
 248        struct btmrvl_cmd *cmd;
 249
 250        skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
 251        if (skb == NULL) {
 252                BT_ERR("No free skb");
 253                return -ENOMEM;
 254        }
 255
 256        cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
 257        cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF,
 258                                        BT_CMD_AUTO_SLEEP_MODE));
 259        cmd->length = 1;
 260
 261        if (priv->btmrvl_dev.psmode)
 262                cmd->data[0] = BT_PS_ENABLE;
 263        else
 264                cmd->data[0] = BT_PS_DISABLE;
 265
 266        bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
 267
 268        skb->dev = (void *) priv->btmrvl_dev.hcidev;
 269        skb_queue_head(&priv->adapter->tx_queue, skb);
 270
 271        BT_DBG("Queue PSMODE Command:%d", cmd->data[0]);
 272
 273        return 0;
 274}
 275EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
 276
 277int btmrvl_enable_hs(struct btmrvl_private *priv)
 278{
 279        struct sk_buff *skb;
 280        struct btmrvl_cmd *cmd;
 281        int ret = 0;
 282
 283        skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
 284        if (skb == NULL) {
 285                BT_ERR("No free skb");
 286                return -ENOMEM;
 287        }
 288
 289        cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
 290        cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_HOST_SLEEP_ENABLE));
 291        cmd->length = 0;
 292
 293        bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
 294
 295        skb->dev = (void *) priv->btmrvl_dev.hcidev;
 296        skb_queue_head(&priv->adapter->tx_queue, skb);
 297
 298        BT_DBG("Queue hs enable Command");
 299
 300        wake_up_interruptible(&priv->main_thread.wait_q);
 301
 302        if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
 303                        priv->adapter->hs_state,
 304                        msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED))) {
 305                ret = -ETIMEDOUT;
 306                BT_ERR("timeout: %d, %d,%d", priv->adapter->hs_state,
 307                                                priv->adapter->ps_state,
 308                                                priv->adapter->wakeup_tries);
 309        }
 310
 311        return ret;
 312}
 313EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
 314
 315int btmrvl_prepare_command(struct btmrvl_private *priv)
 316{
 317        int ret = 0;
 318
 319        if (priv->btmrvl_dev.hscfgcmd) {
 320                priv->btmrvl_dev.hscfgcmd = 0;
 321                btmrvl_send_hscfg_cmd(priv);
 322        }
 323
 324        if (priv->btmrvl_dev.pscmd) {
 325                priv->btmrvl_dev.pscmd = 0;
 326                btmrvl_enable_ps(priv);
 327        }
 328
 329        if (priv->btmrvl_dev.hscmd) {
 330                priv->btmrvl_dev.hscmd = 0;
 331
 332                if (priv->btmrvl_dev.hsmode) {
 333                        ret = btmrvl_enable_hs(priv);
 334                } else {
 335                        ret = priv->hw_wakeup_firmware(priv);
 336                        priv->adapter->hs_state = HS_DEACTIVATED;
 337                }
 338        }
 339
 340        return ret;
 341}
 342
 343static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
 344{
 345        int ret = 0;
 346
 347        if (!skb || !skb->data)
 348                return -EINVAL;
 349
 350        if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
 351                BT_ERR("Tx Error: Bad skb length %d : %d",
 352                                                skb->len, BTM_UPLD_SIZE);
 353                return -EINVAL;
 354        }
 355
 356        if (skb_headroom(skb) < BTM_HEADER_LEN) {
 357                struct sk_buff *tmp = skb;
 358
 359                skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
 360                if (!skb) {
 361                        BT_ERR("Tx Error: realloc_headroom failed %d",
 362                                BTM_HEADER_LEN);
 363                        skb = tmp;
 364                        return -EINVAL;
 365                }
 366
 367                kfree_skb(tmp);
 368        }
 369
 370        skb_push(skb, BTM_HEADER_LEN);
 371
 372        /* header type: byte[3]
 373         * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
 374         * header length: byte[2][1][0]
 375         */
 376
 377        skb->data[0] = (skb->len & 0x0000ff);
 378        skb->data[1] = (skb->len & 0x00ff00) >> 8;
 379        skb->data[2] = (skb->len & 0xff0000) >> 16;
 380        skb->data[3] = bt_cb(skb)->pkt_type;
 381
 382        if (priv->hw_host_to_card)
 383                ret = priv->hw_host_to_card(priv, skb->data, skb->len);
 384
 385        return ret;
 386}
 387
 388static void btmrvl_init_adapter(struct btmrvl_private *priv)
 389{
 390        skb_queue_head_init(&priv->adapter->tx_queue);
 391
 392        priv->adapter->ps_state = PS_AWAKE;
 393
 394        init_waitqueue_head(&priv->adapter->cmd_wait_q);
 395}
 396
 397static void btmrvl_free_adapter(struct btmrvl_private *priv)
 398{
 399        skb_queue_purge(&priv->adapter->tx_queue);
 400
 401        kfree(priv->adapter);
 402
 403        priv->adapter = NULL;
 404}
 405
 406static int btmrvl_ioctl(struct hci_dev *hdev,
 407                                unsigned int cmd, unsigned long arg)
 408{
 409        return -ENOIOCTLCMD;
 410}
 411
 412static int btmrvl_send_frame(struct sk_buff *skb)
 413{
 414        struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 415        struct btmrvl_private *priv = NULL;
 416
 417        BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
 418
 419        if (!hdev) {
 420                BT_ERR("Frame for unknown HCI device");
 421                return -ENODEV;
 422        }
 423
 424        priv = hci_get_drvdata(hdev);
 425
 426        if (!test_bit(HCI_RUNNING, &hdev->flags)) {
 427                BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
 428                print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
 429                                                        skb->data, skb->len);
 430                return -EBUSY;
 431        }
 432
 433        switch (bt_cb(skb)->pkt_type) {
 434        case HCI_COMMAND_PKT:
 435                hdev->stat.cmd_tx++;
 436                break;
 437
 438        case HCI_ACLDATA_PKT:
 439                hdev->stat.acl_tx++;
 440                break;
 441
 442        case HCI_SCODATA_PKT:
 443                hdev->stat.sco_tx++;
 444                break;
 445        }
 446
 447        skb_queue_tail(&priv->adapter->tx_queue, skb);
 448
 449        wake_up_interruptible(&priv->main_thread.wait_q);
 450
 451        return 0;
 452}
 453
 454static int btmrvl_flush(struct hci_dev *hdev)
 455{
 456        struct btmrvl_private *priv = hci_get_drvdata(hdev);
 457
 458        skb_queue_purge(&priv->adapter->tx_queue);
 459
 460        return 0;
 461}
 462
 463static int btmrvl_close(struct hci_dev *hdev)
 464{
 465        struct btmrvl_private *priv = hci_get_drvdata(hdev);
 466
 467        if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 468                return 0;
 469
 470        skb_queue_purge(&priv->adapter->tx_queue);
 471
 472        return 0;
 473}
 474
 475static int btmrvl_open(struct hci_dev *hdev)
 476{
 477        set_bit(HCI_RUNNING, &hdev->flags);
 478
 479        return 0;
 480}
 481
 482/*
 483 * This function handles the event generated by firmware, rx data
 484 * received from firmware, and tx data sent from kernel.
 485 */
 486static int btmrvl_service_main_thread(void *data)
 487{
 488        struct btmrvl_thread *thread = data;
 489        struct btmrvl_private *priv = thread->priv;
 490        struct btmrvl_adapter *adapter = priv->adapter;
 491        wait_queue_t wait;
 492        struct sk_buff *skb;
 493        ulong flags;
 494
 495        init_waitqueue_entry(&wait, current);
 496
 497        for (;;) {
 498                add_wait_queue(&thread->wait_q, &wait);
 499
 500                set_current_state(TASK_INTERRUPTIBLE);
 501                if (kthread_should_stop()) {
 502                        BT_DBG("main_thread: break from main thread");
 503                        break;
 504                }
 505
 506                if (adapter->wakeup_tries ||
 507                                ((!adapter->int_count) &&
 508                                (!priv->btmrvl_dev.tx_dnld_rdy ||
 509                                skb_queue_empty(&adapter->tx_queue)))) {
 510                        BT_DBG("main_thread is sleeping...");
 511                        schedule();
 512                }
 513
 514                set_current_state(TASK_RUNNING);
 515
 516                remove_wait_queue(&thread->wait_q, &wait);
 517
 518                BT_DBG("main_thread woke up");
 519
 520                spin_lock_irqsave(&priv->driver_lock, flags);
 521                if (adapter->int_count) {
 522                        adapter->int_count = 0;
 523                        spin_unlock_irqrestore(&priv->driver_lock, flags);
 524                        priv->hw_process_int_status(priv);
 525                } else if (adapter->ps_state == PS_SLEEP &&
 526                                        !skb_queue_empty(&adapter->tx_queue)) {
 527                        spin_unlock_irqrestore(&priv->driver_lock, flags);
 528                        adapter->wakeup_tries++;
 529                        priv->hw_wakeup_firmware(priv);
 530                        continue;
 531                } else {
 532                        spin_unlock_irqrestore(&priv->driver_lock, flags);
 533                }
 534
 535                if (adapter->ps_state == PS_SLEEP)
 536                        continue;
 537
 538                if (!priv->btmrvl_dev.tx_dnld_rdy)
 539                        continue;
 540
 541                skb = skb_dequeue(&adapter->tx_queue);
 542                if (skb) {
 543                        if (btmrvl_tx_pkt(priv, skb))
 544                                priv->btmrvl_dev.hcidev->stat.err_tx++;
 545                        else
 546                                priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
 547
 548                        kfree_skb(skb);
 549                }
 550        }
 551
 552        return 0;
 553}
 554
 555int btmrvl_register_hdev(struct btmrvl_private *priv)
 556{
 557        struct hci_dev *hdev = NULL;
 558        int ret;
 559
 560        hdev = hci_alloc_dev();
 561        if (!hdev) {
 562                BT_ERR("Can not allocate HCI device");
 563                goto err_hdev;
 564        }
 565
 566        priv->btmrvl_dev.hcidev = hdev;
 567        hci_set_drvdata(hdev, priv);
 568
 569        hdev->bus = HCI_SDIO;
 570        hdev->open = btmrvl_open;
 571        hdev->close = btmrvl_close;
 572        hdev->flush = btmrvl_flush;
 573        hdev->send = btmrvl_send_frame;
 574        hdev->ioctl = btmrvl_ioctl;
 575
 576        btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
 577
 578        hdev->dev_type = priv->btmrvl_dev.dev_type;
 579
 580        ret = hci_register_dev(hdev);
 581        if (ret < 0) {
 582                BT_ERR("Can not register HCI device");
 583                goto err_hci_register_dev;
 584        }
 585
 586#ifdef CONFIG_DEBUG_FS
 587        btmrvl_debugfs_init(hdev);
 588#endif
 589
 590        return 0;
 591
 592err_hci_register_dev:
 593        hci_free_dev(hdev);
 594
 595err_hdev:
 596        /* Stop the thread servicing the interrupts */
 597        kthread_stop(priv->main_thread.task);
 598
 599        btmrvl_free_adapter(priv);
 600        kfree(priv);
 601
 602        return -ENOMEM;
 603}
 604EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
 605
 606struct btmrvl_private *btmrvl_add_card(void *card)
 607{
 608        struct btmrvl_private *priv;
 609
 610        priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 611        if (!priv) {
 612                BT_ERR("Can not allocate priv");
 613                goto err_priv;
 614        }
 615
 616        priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
 617        if (!priv->adapter) {
 618                BT_ERR("Allocate buffer for btmrvl_adapter failed!");
 619                goto err_adapter;
 620        }
 621
 622        btmrvl_init_adapter(priv);
 623
 624        BT_DBG("Starting kthread...");
 625        priv->main_thread.priv = priv;
 626        spin_lock_init(&priv->driver_lock);
 627
 628        init_waitqueue_head(&priv->main_thread.wait_q);
 629        priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
 630                                &priv->main_thread, "btmrvl_main_service");
 631
 632        priv->btmrvl_dev.card = card;
 633        priv->btmrvl_dev.tx_dnld_rdy = true;
 634
 635        return priv;
 636
 637err_adapter:
 638        kfree(priv);
 639
 640err_priv:
 641        return NULL;
 642}
 643EXPORT_SYMBOL_GPL(btmrvl_add_card);
 644
 645int btmrvl_remove_card(struct btmrvl_private *priv)
 646{
 647        struct hci_dev *hdev;
 648
 649        hdev = priv->btmrvl_dev.hcidev;
 650
 651        wake_up_interruptible(&priv->adapter->cmd_wait_q);
 652
 653        kthread_stop(priv->main_thread.task);
 654
 655#ifdef CONFIG_DEBUG_FS
 656        btmrvl_debugfs_remove(hdev);
 657#endif
 658
 659        hci_unregister_dev(hdev);
 660
 661        hci_free_dev(hdev);
 662
 663        priv->btmrvl_dev.hcidev = NULL;
 664
 665        btmrvl_free_adapter(priv);
 666
 667        kfree(priv);
 668
 669        return 0;
 670}
 671EXPORT_SYMBOL_GPL(btmrvl_remove_card);
 672
 673MODULE_AUTHOR("Marvell International Ltd.");
 674MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
 675MODULE_VERSION(VERSION);
 676MODULE_LICENSE("GPL v2");
 677
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