linux/drivers/bluetooth/btusb.c
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   1/*
   2 *
   3 *  Generic Bluetooth USB driver
   4 *
   5 *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6 *
   7 *
   8 *  This program is free software; you can redistribute it and/or modify
   9 *  it under the terms of the GNU General Public License as published by
  10 *  the Free Software Foundation; either version 2 of the License, or
  11 *  (at your option) any later version.
  12 *
  13 *  This program is distributed in the hope that it will be useful,
  14 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 *  GNU General Public License for more details.
  17 *
  18 *  You should have received a copy of the GNU General Public License
  19 *  along with this program; if not, write to the Free Software
  20 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21 *
  22 */
  23
  24#include <linux/module.h>
  25#include <linux/usb.h>
  26
  27#include <net/bluetooth/bluetooth.h>
  28#include <net/bluetooth/hci_core.h>
  29
  30#define VERSION "0.6"
  31
  32static bool ignore_dga;
  33static bool ignore_csr;
  34static bool ignore_sniffer;
  35static bool disable_scofix;
  36static bool force_scofix;
  37
  38static bool reset = 1;
  39
  40static struct usb_driver btusb_driver;
  41
  42#define BTUSB_IGNORE            0x01
  43#define BTUSB_DIGIANSWER        0x02
  44#define BTUSB_CSR               0x04
  45#define BTUSB_SNIFFER           0x08
  46#define BTUSB_BCM92035          0x10
  47#define BTUSB_BROKEN_ISOC       0x20
  48#define BTUSB_WRONG_SCO_MTU     0x40
  49#define BTUSB_ATH3012           0x80
  50
  51static struct usb_device_id btusb_table[] = {
  52        /* Generic Bluetooth USB device */
  53        { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  54
  55        /* Apple-specific (Broadcom) devices */
  56        { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  57
  58        /* Broadcom SoftSailing reporting vendor specific */
  59        { USB_DEVICE(0x0a5c, 0x21e1) },
  60
  61        /* Apple MacBookPro 7,1 */
  62        { USB_DEVICE(0x05ac, 0x8213) },
  63
  64        /* Apple iMac11,1 */
  65        { USB_DEVICE(0x05ac, 0x8215) },
  66
  67        /* Apple MacBookPro6,2 */
  68        { USB_DEVICE(0x05ac, 0x8218) },
  69
  70        /* Apple MacBookAir3,1, MacBookAir3,2 */
  71        { USB_DEVICE(0x05ac, 0x821b) },
  72
  73        /* Apple MacBookAir4,1 */
  74        { USB_DEVICE(0x05ac, 0x821f) },
  75
  76        /* Apple MacBookPro8,2 */
  77        { USB_DEVICE(0x05ac, 0x821a) },
  78
  79        /* Apple MacMini5,1 */
  80        { USB_DEVICE(0x05ac, 0x8281) },
  81
  82        /* AVM BlueFRITZ! USB v2.0 */
  83        { USB_DEVICE(0x057c, 0x3800) },
  84
  85        /* Bluetooth Ultraport Module from IBM */
  86        { USB_DEVICE(0x04bf, 0x030a) },
  87
  88        /* ALPS Modules with non-standard id */
  89        { USB_DEVICE(0x044e, 0x3001) },
  90        { USB_DEVICE(0x044e, 0x3002) },
  91
  92        /* Ericsson with non-standard id */
  93        { USB_DEVICE(0x0bdb, 0x1002) },
  94
  95        /* Canyon CN-BTU1 with HID interfaces */
  96        { USB_DEVICE(0x0c10, 0x0000) },
  97
  98        /* Broadcom BCM20702A0 */
  99        { USB_DEVICE(0x0b05, 0x17b5) },
 100        { USB_DEVICE(0x04ca, 0x2003) },
 101        { USB_DEVICE(0x0489, 0xe042) },
 102        { USB_DEVICE(0x413c, 0x8197) },
 103
 104        /* Foxconn - Hon Hai */
 105        { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 106
 107        /*Broadcom devices with vendor specific id */
 108        { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
 109
 110        { }     /* Terminating entry */
 111};
 112
 113MODULE_DEVICE_TABLE(usb, btusb_table);
 114
 115static struct usb_device_id blacklist_table[] = {
 116        /* CSR BlueCore devices */
 117        { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 118
 119        /* Broadcom BCM2033 without firmware */
 120        { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 121
 122        /* Atheros 3011 with sflash firmware */
 123        { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 124        { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 125        { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 126        { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 127        { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 128        { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 129
 130        /* Atheros AR9285 Malbec with sflash firmware */
 131        { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 132
 133        /* Atheros 3012 with sflash firmware */
 134        { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 135        { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 136        { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 137        { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 138        { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 139        { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 140        { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 141        { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 142        { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 143        { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 144        { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 145        { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 146        { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 147        { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 148        { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 149
 150        /* Atheros AR5BBU12 with sflash firmware */
 151        { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 152
 153        /* Atheros AR5BBU12 with sflash firmware */
 154        { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 155        { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 156
 157        /* Broadcom BCM2035 */
 158        { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 159        { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 160        { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 161
 162        /* Broadcom BCM2045 */
 163        { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 164        { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 165
 166        /* IBM/Lenovo ThinkPad with Broadcom chip */
 167        { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 168        { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 169
 170        /* HP laptop with Broadcom chip */
 171        { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 172
 173        /* Dell laptop with Broadcom chip */
 174        { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 175
 176        /* Dell Wireless 370 and 410 devices */
 177        { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 178        { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 179
 180        /* Belkin F8T012 and F8T013 devices */
 181        { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 182        { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 183
 184        /* Asus WL-BTD202 device */
 185        { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 186
 187        /* Kensington Bluetooth USB adapter */
 188        { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 189
 190        /* RTX Telecom based adapters with buggy SCO support */
 191        { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 192        { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 193
 194        /* CONWISE Technology based adapters with buggy SCO support */
 195        { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 196
 197        /* Digianswer devices */
 198        { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 199        { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 200
 201        /* CSR BlueCore Bluetooth Sniffer */
 202        { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 203
 204        /* Frontline ComProbe Bluetooth Sniffer */
 205        { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 206
 207        { }     /* Terminating entry */
 208};
 209
 210#define BTUSB_MAX_ISOC_FRAMES   10
 211
 212#define BTUSB_INTR_RUNNING      0
 213#define BTUSB_BULK_RUNNING      1
 214#define BTUSB_ISOC_RUNNING      2
 215#define BTUSB_SUSPENDING        3
 216#define BTUSB_DID_ISO_RESUME    4
 217
 218struct btusb_data {
 219        struct hci_dev       *hdev;
 220        struct usb_device    *udev;
 221        struct usb_interface *intf;
 222        struct usb_interface *isoc;
 223
 224        spinlock_t lock;
 225
 226        unsigned long flags;
 227
 228        struct work_struct work;
 229        struct work_struct waker;
 230
 231        struct usb_anchor tx_anchor;
 232        struct usb_anchor intr_anchor;
 233        struct usb_anchor bulk_anchor;
 234        struct usb_anchor isoc_anchor;
 235        struct usb_anchor deferred;
 236        int tx_in_flight;
 237        spinlock_t txlock;
 238
 239        struct usb_endpoint_descriptor *intr_ep;
 240        struct usb_endpoint_descriptor *bulk_tx_ep;
 241        struct usb_endpoint_descriptor *bulk_rx_ep;
 242        struct usb_endpoint_descriptor *isoc_tx_ep;
 243        struct usb_endpoint_descriptor *isoc_rx_ep;
 244
 245        __u8 cmdreq_type;
 246
 247        unsigned int sco_num;
 248        int isoc_altsetting;
 249        int suspend_count;
 250};
 251
 252static int inc_tx(struct btusb_data *data)
 253{
 254        unsigned long flags;
 255        int rv;
 256
 257        spin_lock_irqsave(&data->txlock, flags);
 258        rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 259        if (!rv)
 260                data->tx_in_flight++;
 261        spin_unlock_irqrestore(&data->txlock, flags);
 262
 263        return rv;
 264}
 265
 266static void btusb_intr_complete(struct urb *urb)
 267{
 268        struct hci_dev *hdev = urb->context;
 269        struct btusb_data *data = hci_get_drvdata(hdev);
 270        int err;
 271
 272        BT_DBG("%s urb %p status %d count %d", hdev->name,
 273                                        urb, urb->status, urb->actual_length);
 274
 275        if (!test_bit(HCI_RUNNING, &hdev->flags))
 276                return;
 277
 278        if (urb->status == 0) {
 279                hdev->stat.byte_rx += urb->actual_length;
 280
 281                if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 282                                                urb->transfer_buffer,
 283                                                urb->actual_length) < 0) {
 284                        BT_ERR("%s corrupted event packet", hdev->name);
 285                        hdev->stat.err_rx++;
 286                }
 287        }
 288
 289        if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 290                return;
 291
 292        usb_mark_last_busy(data->udev);
 293        usb_anchor_urb(urb, &data->intr_anchor);
 294
 295        err = usb_submit_urb(urb, GFP_ATOMIC);
 296        if (err < 0) {
 297                /* -EPERM: urb is being killed;
 298                 * -ENODEV: device got disconnected */
 299                if (err != -EPERM && err != -ENODEV)
 300                        BT_ERR("%s urb %p failed to resubmit (%d)",
 301                                                hdev->name, urb, -err);
 302                usb_unanchor_urb(urb);
 303        }
 304}
 305
 306static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 307{
 308        struct btusb_data *data = hci_get_drvdata(hdev);
 309        struct urb *urb;
 310        unsigned char *buf;
 311        unsigned int pipe;
 312        int err, size;
 313
 314        BT_DBG("%s", hdev->name);
 315
 316        if (!data->intr_ep)
 317                return -ENODEV;
 318
 319        urb = usb_alloc_urb(0, mem_flags);
 320        if (!urb)
 321                return -ENOMEM;
 322
 323        size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 324
 325        buf = kmalloc(size, mem_flags);
 326        if (!buf) {
 327                usb_free_urb(urb);
 328                return -ENOMEM;
 329        }
 330
 331        pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 332
 333        usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 334                                                btusb_intr_complete, hdev,
 335                                                data->intr_ep->bInterval);
 336
 337        urb->transfer_flags |= URB_FREE_BUFFER;
 338
 339        usb_anchor_urb(urb, &data->intr_anchor);
 340
 341        err = usb_submit_urb(urb, mem_flags);
 342        if (err < 0) {
 343                if (err != -EPERM && err != -ENODEV)
 344                        BT_ERR("%s urb %p submission failed (%d)",
 345                                                hdev->name, urb, -err);
 346                usb_unanchor_urb(urb);
 347        }
 348
 349        usb_free_urb(urb);
 350
 351        return err;
 352}
 353
 354static void btusb_bulk_complete(struct urb *urb)
 355{
 356        struct hci_dev *hdev = urb->context;
 357        struct btusb_data *data = hci_get_drvdata(hdev);
 358        int err;
 359
 360        BT_DBG("%s urb %p status %d count %d", hdev->name,
 361                                        urb, urb->status, urb->actual_length);
 362
 363        if (!test_bit(HCI_RUNNING, &hdev->flags))
 364                return;
 365
 366        if (urb->status == 0) {
 367                hdev->stat.byte_rx += urb->actual_length;
 368
 369                if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 370                                                urb->transfer_buffer,
 371                                                urb->actual_length) < 0) {
 372                        BT_ERR("%s corrupted ACL packet", hdev->name);
 373                        hdev->stat.err_rx++;
 374                }
 375        }
 376
 377        if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 378                return;
 379
 380        usb_anchor_urb(urb, &data->bulk_anchor);
 381        usb_mark_last_busy(data->udev);
 382
 383        err = usb_submit_urb(urb, GFP_ATOMIC);
 384        if (err < 0) {
 385                /* -EPERM: urb is being killed;
 386                 * -ENODEV: device got disconnected */
 387                if (err != -EPERM && err != -ENODEV)
 388                        BT_ERR("%s urb %p failed to resubmit (%d)",
 389                                                hdev->name, urb, -err);
 390                usb_unanchor_urb(urb);
 391        }
 392}
 393
 394static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 395{
 396        struct btusb_data *data = hci_get_drvdata(hdev);
 397        struct urb *urb;
 398        unsigned char *buf;
 399        unsigned int pipe;
 400        int err, size = HCI_MAX_FRAME_SIZE;
 401
 402        BT_DBG("%s", hdev->name);
 403
 404        if (!data->bulk_rx_ep)
 405                return -ENODEV;
 406
 407        urb = usb_alloc_urb(0, mem_flags);
 408        if (!urb)
 409                return -ENOMEM;
 410
 411        buf = kmalloc(size, mem_flags);
 412        if (!buf) {
 413                usb_free_urb(urb);
 414                return -ENOMEM;
 415        }
 416
 417        pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 418
 419        usb_fill_bulk_urb(urb, data->udev, pipe,
 420                                        buf, size, btusb_bulk_complete, hdev);
 421
 422        urb->transfer_flags |= URB_FREE_BUFFER;
 423
 424        usb_mark_last_busy(data->udev);
 425        usb_anchor_urb(urb, &data->bulk_anchor);
 426
 427        err = usb_submit_urb(urb, mem_flags);
 428        if (err < 0) {
 429                if (err != -EPERM && err != -ENODEV)
 430                        BT_ERR("%s urb %p submission failed (%d)",
 431                                                hdev->name, urb, -err);
 432                usb_unanchor_urb(urb);
 433        }
 434
 435        usb_free_urb(urb);
 436
 437        return err;
 438}
 439
 440static void btusb_isoc_complete(struct urb *urb)
 441{
 442        struct hci_dev *hdev = urb->context;
 443        struct btusb_data *data = hci_get_drvdata(hdev);
 444        int i, err;
 445
 446        BT_DBG("%s urb %p status %d count %d", hdev->name,
 447                                        urb, urb->status, urb->actual_length);
 448
 449        if (!test_bit(HCI_RUNNING, &hdev->flags))
 450                return;
 451
 452        if (urb->status == 0) {
 453                for (i = 0; i < urb->number_of_packets; i++) {
 454                        unsigned int offset = urb->iso_frame_desc[i].offset;
 455                        unsigned int length = urb->iso_frame_desc[i].actual_length;
 456
 457                        if (urb->iso_frame_desc[i].status)
 458                                continue;
 459
 460                        hdev->stat.byte_rx += length;
 461
 462                        if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 463                                                urb->transfer_buffer + offset,
 464                                                                length) < 0) {
 465                                BT_ERR("%s corrupted SCO packet", hdev->name);
 466                                hdev->stat.err_rx++;
 467                        }
 468                }
 469        }
 470
 471        if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 472                return;
 473
 474        usb_anchor_urb(urb, &data->isoc_anchor);
 475
 476        err = usb_submit_urb(urb, GFP_ATOMIC);
 477        if (err < 0) {
 478                /* -EPERM: urb is being killed;
 479                 * -ENODEV: device got disconnected */
 480                if (err != -EPERM && err != -ENODEV)
 481                        BT_ERR("%s urb %p failed to resubmit (%d)",
 482                                                hdev->name, urb, -err);
 483                usb_unanchor_urb(urb);
 484        }
 485}
 486
 487static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 488{
 489        int i, offset = 0;
 490
 491        BT_DBG("len %d mtu %d", len, mtu);
 492
 493        for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 494                                        i++, offset += mtu, len -= mtu) {
 495                urb->iso_frame_desc[i].offset = offset;
 496                urb->iso_frame_desc[i].length = mtu;
 497        }
 498
 499        if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 500                urb->iso_frame_desc[i].offset = offset;
 501                urb->iso_frame_desc[i].length = len;
 502                i++;
 503        }
 504
 505        urb->number_of_packets = i;
 506}
 507
 508static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 509{
 510        struct btusb_data *data = hci_get_drvdata(hdev);
 511        struct urb *urb;
 512        unsigned char *buf;
 513        unsigned int pipe;
 514        int err, size;
 515
 516        BT_DBG("%s", hdev->name);
 517
 518        if (!data->isoc_rx_ep)
 519                return -ENODEV;
 520
 521        urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 522        if (!urb)
 523                return -ENOMEM;
 524
 525        size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 526                                                BTUSB_MAX_ISOC_FRAMES;
 527
 528        buf = kmalloc(size, mem_flags);
 529        if (!buf) {
 530                usb_free_urb(urb);
 531                return -ENOMEM;
 532        }
 533
 534        pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 535
 536        usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 537                                hdev, data->isoc_rx_ep->bInterval);
 538
 539        urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 540
 541        __fill_isoc_descriptor(urb, size,
 542                        le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 543
 544        usb_anchor_urb(urb, &data->isoc_anchor);
 545
 546        err = usb_submit_urb(urb, mem_flags);
 547        if (err < 0) {
 548                if (err != -EPERM && err != -ENODEV)
 549                        BT_ERR("%s urb %p submission failed (%d)",
 550                                                hdev->name, urb, -err);
 551                usb_unanchor_urb(urb);
 552        }
 553
 554        usb_free_urb(urb);
 555
 556        return err;
 557}
 558
 559static void btusb_tx_complete(struct urb *urb)
 560{
 561        struct sk_buff *skb = urb->context;
 562        struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 563        struct btusb_data *data = hci_get_drvdata(hdev);
 564
 565        BT_DBG("%s urb %p status %d count %d", hdev->name,
 566                                        urb, urb->status, urb->actual_length);
 567
 568        if (!test_bit(HCI_RUNNING, &hdev->flags))
 569                goto done;
 570
 571        if (!urb->status)
 572                hdev->stat.byte_tx += urb->transfer_buffer_length;
 573        else
 574                hdev->stat.err_tx++;
 575
 576done:
 577        spin_lock(&data->txlock);
 578        data->tx_in_flight--;
 579        spin_unlock(&data->txlock);
 580
 581        kfree(urb->setup_packet);
 582
 583        kfree_skb(skb);
 584}
 585
 586static void btusb_isoc_tx_complete(struct urb *urb)
 587{
 588        struct sk_buff *skb = urb->context;
 589        struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 590
 591        BT_DBG("%s urb %p status %d count %d", hdev->name,
 592                                        urb, urb->status, urb->actual_length);
 593
 594        if (!test_bit(HCI_RUNNING, &hdev->flags))
 595                goto done;
 596
 597        if (!urb->status)
 598                hdev->stat.byte_tx += urb->transfer_buffer_length;
 599        else
 600                hdev->stat.err_tx++;
 601
 602done:
 603        kfree(urb->setup_packet);
 604
 605        kfree_skb(skb);
 606}
 607
 608static int btusb_open(struct hci_dev *hdev)
 609{
 610        struct btusb_data *data = hci_get_drvdata(hdev);
 611        int err;
 612
 613        BT_DBG("%s", hdev->name);
 614
 615        err = usb_autopm_get_interface(data->intf);
 616        if (err < 0)
 617                return err;
 618
 619        data->intf->needs_remote_wakeup = 1;
 620
 621        if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 622                goto done;
 623
 624        if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 625                goto done;
 626
 627        err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 628        if (err < 0)
 629                goto failed;
 630
 631        err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 632        if (err < 0) {
 633                usb_kill_anchored_urbs(&data->intr_anchor);
 634                goto failed;
 635        }
 636
 637        set_bit(BTUSB_BULK_RUNNING, &data->flags);
 638        btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 639
 640done:
 641        usb_autopm_put_interface(data->intf);
 642        return 0;
 643
 644failed:
 645        clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 646        clear_bit(HCI_RUNNING, &hdev->flags);
 647        usb_autopm_put_interface(data->intf);
 648        return err;
 649}
 650
 651static void btusb_stop_traffic(struct btusb_data *data)
 652{
 653        usb_kill_anchored_urbs(&data->intr_anchor);
 654        usb_kill_anchored_urbs(&data->bulk_anchor);
 655        usb_kill_anchored_urbs(&data->isoc_anchor);
 656}
 657
 658static int btusb_close(struct hci_dev *hdev)
 659{
 660        struct btusb_data *data = hci_get_drvdata(hdev);
 661        int err;
 662
 663        BT_DBG("%s", hdev->name);
 664
 665        if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 666                return 0;
 667
 668        cancel_work_sync(&data->work);
 669        cancel_work_sync(&data->waker);
 670
 671        clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 672        clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 673        clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 674
 675        btusb_stop_traffic(data);
 676        err = usb_autopm_get_interface(data->intf);
 677        if (err < 0)
 678                goto failed;
 679
 680        data->intf->needs_remote_wakeup = 0;
 681        usb_autopm_put_interface(data->intf);
 682
 683failed:
 684        usb_scuttle_anchored_urbs(&data->deferred);
 685        return 0;
 686}
 687
 688static int btusb_flush(struct hci_dev *hdev)
 689{
 690        struct btusb_data *data = hci_get_drvdata(hdev);
 691
 692        BT_DBG("%s", hdev->name);
 693
 694        usb_kill_anchored_urbs(&data->tx_anchor);
 695
 696        return 0;
 697}
 698
 699static int btusb_send_frame(struct sk_buff *skb)
 700{
 701        struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 702        struct btusb_data *data = hci_get_drvdata(hdev);
 703        struct usb_ctrlrequest *dr;
 704        struct urb *urb;
 705        unsigned int pipe;
 706        int err;
 707
 708        BT_DBG("%s", hdev->name);
 709
 710        if (!test_bit(HCI_RUNNING, &hdev->flags))
 711                return -EBUSY;
 712
 713        switch (bt_cb(skb)->pkt_type) {
 714        case HCI_COMMAND_PKT:
 715                urb = usb_alloc_urb(0, GFP_ATOMIC);
 716                if (!urb)
 717                        return -ENOMEM;
 718
 719                dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 720                if (!dr) {
 721                        usb_free_urb(urb);
 722                        return -ENOMEM;
 723                }
 724
 725                dr->bRequestType = data->cmdreq_type;
 726                dr->bRequest     = 0;
 727                dr->wIndex       = 0;
 728                dr->wValue       = 0;
 729                dr->wLength      = __cpu_to_le16(skb->len);
 730
 731                pipe = usb_sndctrlpipe(data->udev, 0x00);
 732
 733                usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 734                                skb->data, skb->len, btusb_tx_complete, skb);
 735
 736                hdev->stat.cmd_tx++;
 737                break;
 738
 739        case HCI_ACLDATA_PKT:
 740                if (!data->bulk_tx_ep)
 741                        return -ENODEV;
 742
 743                urb = usb_alloc_urb(0, GFP_ATOMIC);
 744                if (!urb)
 745                        return -ENOMEM;
 746
 747                pipe = usb_sndbulkpipe(data->udev,
 748                                        data->bulk_tx_ep->bEndpointAddress);
 749
 750                usb_fill_bulk_urb(urb, data->udev, pipe,
 751                                skb->data, skb->len, btusb_tx_complete, skb);
 752
 753                hdev->stat.acl_tx++;
 754                break;
 755
 756        case HCI_SCODATA_PKT:
 757                if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 758                        return -ENODEV;
 759
 760                urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 761                if (!urb)
 762                        return -ENOMEM;
 763
 764                pipe = usb_sndisocpipe(data->udev,
 765                                        data->isoc_tx_ep->bEndpointAddress);
 766
 767                usb_fill_int_urb(urb, data->udev, pipe,
 768                                skb->data, skb->len, btusb_isoc_tx_complete,
 769                                skb, data->isoc_tx_ep->bInterval);
 770
 771                urb->transfer_flags  = URB_ISO_ASAP;
 772
 773                __fill_isoc_descriptor(urb, skb->len,
 774                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 775
 776                hdev->stat.sco_tx++;
 777                goto skip_waking;
 778
 779        default:
 780                return -EILSEQ;
 781        }
 782
 783        err = inc_tx(data);
 784        if (err) {
 785                usb_anchor_urb(urb, &data->deferred);
 786                schedule_work(&data->waker);
 787                err = 0;
 788                goto done;
 789        }
 790
 791skip_waking:
 792        usb_anchor_urb(urb, &data->tx_anchor);
 793
 794        err = usb_submit_urb(urb, GFP_ATOMIC);
 795        if (err < 0) {
 796                if (err != -EPERM && err != -ENODEV)
 797                        BT_ERR("%s urb %p submission failed (%d)",
 798                                                hdev->name, urb, -err);
 799                kfree(urb->setup_packet);
 800                usb_unanchor_urb(urb);
 801        } else {
 802                usb_mark_last_busy(data->udev);
 803        }
 804
 805done:
 806        usb_free_urb(urb);
 807        return err;
 808}
 809
 810static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 811{
 812        struct btusb_data *data = hci_get_drvdata(hdev);
 813
 814        BT_DBG("%s evt %d", hdev->name, evt);
 815
 816        if (hdev->conn_hash.sco_num != data->sco_num) {
 817                data->sco_num = hdev->conn_hash.sco_num;
 818                schedule_work(&data->work);
 819        }
 820}
 821
 822static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 823{
 824        struct btusb_data *data = hci_get_drvdata(hdev);
 825        struct usb_interface *intf = data->isoc;
 826        struct usb_endpoint_descriptor *ep_desc;
 827        int i, err;
 828
 829        if (!data->isoc)
 830                return -ENODEV;
 831
 832        err = usb_set_interface(data->udev, 1, altsetting);
 833        if (err < 0) {
 834                BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 835                return err;
 836        }
 837
 838        data->isoc_altsetting = altsetting;
 839
 840        data->isoc_tx_ep = NULL;
 841        data->isoc_rx_ep = NULL;
 842
 843        for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 844                ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 845
 846                if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 847                        data->isoc_tx_ep = ep_desc;
 848                        continue;
 849                }
 850
 851                if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 852                        data->isoc_rx_ep = ep_desc;
 853                        continue;
 854                }
 855        }
 856
 857        if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 858                BT_ERR("%s invalid SCO descriptors", hdev->name);
 859                return -ENODEV;
 860        }
 861
 862        return 0;
 863}
 864
 865static void btusb_work(struct work_struct *work)
 866{
 867        struct btusb_data *data = container_of(work, struct btusb_data, work);
 868        struct hci_dev *hdev = data->hdev;
 869        int new_alts;
 870        int err;
 871
 872        if (hdev->conn_hash.sco_num > 0) {
 873                if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 874                        err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 875                        if (err < 0) {
 876                                clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 877                                usb_kill_anchored_urbs(&data->isoc_anchor);
 878                                return;
 879                        }
 880
 881                        set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 882                }
 883
 884                if (hdev->voice_setting & 0x0020) {
 885                        static const int alts[3] = { 2, 4, 5 };
 886                        new_alts = alts[hdev->conn_hash.sco_num - 1];
 887                } else {
 888                        new_alts = hdev->conn_hash.sco_num;
 889                }
 890
 891                if (data->isoc_altsetting != new_alts) {
 892                        clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 893                        usb_kill_anchored_urbs(&data->isoc_anchor);
 894
 895                        if (__set_isoc_interface(hdev, new_alts) < 0)
 896                                return;
 897                }
 898
 899                if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 900                        if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 901                                clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 902                        else
 903                                btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 904                }
 905        } else {
 906                clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 907                usb_kill_anchored_urbs(&data->isoc_anchor);
 908
 909                __set_isoc_interface(hdev, 0);
 910                if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 911                        usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 912        }
 913}
 914
 915static void btusb_waker(struct work_struct *work)
 916{
 917        struct btusb_data *data = container_of(work, struct btusb_data, waker);
 918        int err;
 919
 920        err = usb_autopm_get_interface(data->intf);
 921        if (err < 0)
 922                return;
 923
 924        usb_autopm_put_interface(data->intf);
 925}
 926
 927static int btusb_probe(struct usb_interface *intf,
 928                                const struct usb_device_id *id)
 929{
 930        struct usb_endpoint_descriptor *ep_desc;
 931        struct btusb_data *data;
 932        struct hci_dev *hdev;
 933        int i, err;
 934
 935        BT_DBG("intf %p id %p", intf, id);
 936
 937        /* interface numbers are hardcoded in the spec */
 938        if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 939                return -ENODEV;
 940
 941        if (!id->driver_info) {
 942                const struct usb_device_id *match;
 943                match = usb_match_id(intf, blacklist_table);
 944                if (match)
 945                        id = match;
 946        }
 947
 948        if (id->driver_info == BTUSB_IGNORE)
 949                return -ENODEV;
 950
 951        if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 952                return -ENODEV;
 953
 954        if (ignore_csr && id->driver_info & BTUSB_CSR)
 955                return -ENODEV;
 956
 957        if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 958                return -ENODEV;
 959
 960        if (id->driver_info & BTUSB_ATH3012) {
 961                struct usb_device *udev = interface_to_usbdev(intf);
 962
 963                /* Old firmware would otherwise let ath3k driver load
 964                 * patch and sysconfig files */
 965                if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 966                        return -ENODEV;
 967        }
 968
 969        data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
 970        if (!data)
 971                return -ENOMEM;
 972
 973        for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 974                ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 975
 976                if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 977                        data->intr_ep = ep_desc;
 978                        continue;
 979                }
 980
 981                if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 982                        data->bulk_tx_ep = ep_desc;
 983                        continue;
 984                }
 985
 986                if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 987                        data->bulk_rx_ep = ep_desc;
 988                        continue;
 989                }
 990        }
 991
 992        if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
 993                return -ENODEV;
 994
 995        data->cmdreq_type = USB_TYPE_CLASS;
 996
 997        data->udev = interface_to_usbdev(intf);
 998        data->intf = intf;
 999
1000        spin_lock_init(&data->lock);
1001
1002        INIT_WORK(&data->work, btusb_work);
1003        INIT_WORK(&data->waker, btusb_waker);
1004        spin_lock_init(&data->txlock);
1005
1006        init_usb_anchor(&data->tx_anchor);
1007        init_usb_anchor(&data->intr_anchor);
1008        init_usb_anchor(&data->bulk_anchor);
1009        init_usb_anchor(&data->isoc_anchor);
1010        init_usb_anchor(&data->deferred);
1011
1012        hdev = hci_alloc_dev();
1013        if (!hdev)
1014                return -ENOMEM;
1015
1016        hdev->bus = HCI_USB;
1017        hci_set_drvdata(hdev, data);
1018
1019        data->hdev = hdev;
1020
1021        SET_HCIDEV_DEV(hdev, &intf->dev);
1022
1023        hdev->open     = btusb_open;
1024        hdev->close    = btusb_close;
1025        hdev->flush    = btusb_flush;
1026        hdev->send     = btusb_send_frame;
1027        hdev->notify   = btusb_notify;
1028
1029        /* Interface numbers are hardcoded in the specification */
1030        data->isoc = usb_ifnum_to_if(data->udev, 1);
1031
1032        if (!reset)
1033                set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1034
1035        if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1036                if (!disable_scofix)
1037                        set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1038        }
1039
1040        if (id->driver_info & BTUSB_BROKEN_ISOC)
1041                data->isoc = NULL;
1042
1043        if (id->driver_info & BTUSB_DIGIANSWER) {
1044                data->cmdreq_type = USB_TYPE_VENDOR;
1045                set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1046        }
1047
1048        if (id->driver_info & BTUSB_CSR) {
1049                struct usb_device *udev = data->udev;
1050
1051                /* Old firmware would otherwise execute USB reset */
1052                if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1053                        set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1054        }
1055
1056        if (id->driver_info & BTUSB_SNIFFER) {
1057                struct usb_device *udev = data->udev;
1058
1059                /* New sniffer firmware has crippled HCI interface */
1060                if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1061                        set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1062
1063                data->isoc = NULL;
1064        }
1065
1066        if (id->driver_info & BTUSB_BCM92035) {
1067                unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1068                struct sk_buff *skb;
1069
1070                skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1071                if (skb) {
1072                        memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1073                        skb_queue_tail(&hdev->driver_init, skb);
1074                }
1075        }
1076
1077        if (data->isoc) {
1078                err = usb_driver_claim_interface(&btusb_driver,
1079                                                        data->isoc, data);
1080                if (err < 0) {
1081                        hci_free_dev(hdev);
1082                        return err;
1083                }
1084        }
1085
1086        err = hci_register_dev(hdev);
1087        if (err < 0) {
1088                hci_free_dev(hdev);
1089                return err;
1090        }
1091
1092        usb_set_intfdata(intf, data);
1093
1094        return 0;
1095}
1096
1097static void btusb_disconnect(struct usb_interface *intf)
1098{
1099        struct btusb_data *data = usb_get_intfdata(intf);
1100        struct hci_dev *hdev;
1101
1102        BT_DBG("intf %p", intf);
1103
1104        if (!data)
1105                return;
1106
1107        hdev = data->hdev;
1108        usb_set_intfdata(data->intf, NULL);
1109
1110        if (data->isoc)
1111                usb_set_intfdata(data->isoc, NULL);
1112
1113        hci_unregister_dev(hdev);
1114
1115        if (intf == data->isoc)
1116                usb_driver_release_interface(&btusb_driver, data->intf);
1117        else if (data->isoc)
1118                usb_driver_release_interface(&btusb_driver, data->isoc);
1119
1120        hci_free_dev(hdev);
1121}
1122
1123#ifdef CONFIG_PM
1124static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1125{
1126        struct btusb_data *data = usb_get_intfdata(intf);
1127
1128        BT_DBG("intf %p", intf);
1129
1130        if (data->suspend_count++)
1131                return 0;
1132
1133        spin_lock_irq(&data->txlock);
1134        if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1135                set_bit(BTUSB_SUSPENDING, &data->flags);
1136                spin_unlock_irq(&data->txlock);
1137        } else {
1138                spin_unlock_irq(&data->txlock);
1139                data->suspend_count--;
1140                return -EBUSY;
1141        }
1142
1143        cancel_work_sync(&data->work);
1144
1145        btusb_stop_traffic(data);
1146        usb_kill_anchored_urbs(&data->tx_anchor);
1147
1148        return 0;
1149}
1150
1151static void play_deferred(struct btusb_data *data)
1152{
1153        struct urb *urb;
1154        int err;
1155
1156        while ((urb = usb_get_from_anchor(&data->deferred))) {
1157                err = usb_submit_urb(urb, GFP_ATOMIC);
1158                if (err < 0)
1159                        break;
1160
1161                data->tx_in_flight++;
1162        }
1163        usb_scuttle_anchored_urbs(&data->deferred);
1164}
1165
1166static int btusb_resume(struct usb_interface *intf)
1167{
1168        struct btusb_data *data = usb_get_intfdata(intf);
1169        struct hci_dev *hdev = data->hdev;
1170        int err = 0;
1171
1172        BT_DBG("intf %p", intf);
1173
1174        if (--data->suspend_count)
1175                return 0;
1176
1177        if (!test_bit(HCI_RUNNING, &hdev->flags))
1178                goto done;
1179
1180        if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1181                err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1182                if (err < 0) {
1183                        clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1184                        goto failed;
1185                }
1186        }
1187
1188        if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1189                err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1190                if (err < 0) {
1191                        clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1192                        goto failed;
1193                }
1194
1195                btusb_submit_bulk_urb(hdev, GFP_NOIO);
1196        }
1197
1198        if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1199                if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1200                        clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1201                else
1202                        btusb_submit_isoc_urb(hdev, GFP_NOIO);
1203        }
1204
1205        spin_lock_irq(&data->txlock);
1206        play_deferred(data);
1207        clear_bit(BTUSB_SUSPENDING, &data->flags);
1208        spin_unlock_irq(&data->txlock);
1209        schedule_work(&data->work);
1210
1211        return 0;
1212
1213failed:
1214        usb_scuttle_anchored_urbs(&data->deferred);
1215done:
1216        spin_lock_irq(&data->txlock);
1217        clear_bit(BTUSB_SUSPENDING, &data->flags);
1218        spin_unlock_irq(&data->txlock);
1219
1220        return err;
1221}
1222#endif
1223
1224static struct usb_driver btusb_driver = {
1225        .name           = "btusb",
1226        .probe          = btusb_probe,
1227        .disconnect     = btusb_disconnect,
1228#ifdef CONFIG_PM
1229        .suspend        = btusb_suspend,
1230        .resume         = btusb_resume,
1231#endif
1232        .id_table       = btusb_table,
1233        .supports_autosuspend = 1,
1234        .disable_hub_initiated_lpm = 1,
1235};
1236
1237module_usb_driver(btusb_driver);
1238
1239module_param(ignore_dga, bool, 0644);
1240MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1241
1242module_param(ignore_csr, bool, 0644);
1243MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1244
1245module_param(ignore_sniffer, bool, 0644);
1246MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1247
1248module_param(disable_scofix, bool, 0644);
1249MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1250
1251module_param(force_scofix, bool, 0644);
1252MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1253
1254module_param(reset, bool, 0644);
1255MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1256
1257MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1258MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1259MODULE_VERSION(VERSION);
1260MODULE_LICENSE("GPL");
1261
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