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