drivers/bluetooth/btusb.c

   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
  32 static bool ignore_dga;
  33 static bool ignore_csr;
  34 static bool ignore_sniffer;
  35 static bool disable_scofix;
  36 static bool force_scofix;
  37
  38 static bool reset = 1;
  39
  40 static 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
  51 static struct usb_device_id btusb_table[] = {
  52         /* Generic Bluetooth USB device */
  53         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  54
  55         /* Broadcom SoftSailing reporting vendor specific */
  56         { USB_DEVICE(0x0a5c, 0x21e1) },
  57
  58         /* Apple MacBookPro 7,1 */
  59         { USB_DEVICE(0x05ac, 0x8213) },
  60
  61         /* Apple iMac11,1 */
  62         { USB_DEVICE(0x05ac, 0x8215) },
  63
  64         /* Apple MacBookPro6,2 */
  65         { USB_DEVICE(0x05ac, 0x8218) },
  66
  67         /* Apple MacBookAir3,1, MacBookAir3,2 */
  68         { USB_DEVICE(0x05ac, 0x821b) },
  69
  70         /* Apple MacBookAir4,1 */
  71         { USB_DEVICE(0x05ac, 0x821f) },
  72
  73         /* Apple MacBookPro8,2 */
  74         { USB_DEVICE(0x05ac, 0x821a) },
  75
  76         /* Apple MacMini5,1 */
  77         { USB_DEVICE(0x05ac, 0x8281) },
  78
  79         /* AVM BlueFRITZ! USB v2.0 */
  80         { USB_DEVICE(0x057c, 0x3800) },
  81
  82         /* Bluetooth Ultraport Module from IBM */
  83         { USB_DEVICE(0x04bf, 0x030a) },
  84
  85         /* ALPS Modules with non-standard id */
  86         { USB_DEVICE(0x044e, 0x3001) },
  87         { USB_DEVICE(0x044e, 0x3002) },
  88
  89         /* Ericsson with non-standard id */
  90         { USB_DEVICE(0x0bdb, 0x1002) },
  91
  92         /* Canyon CN-BTU1 with HID interfaces */
  93         { USB_DEVICE(0x0c10, 0x0000) },
  94
  95         /* Broadcom BCM20702A0 */
  96         { USB_DEVICE(0x0489, 0xe042) },
  97         { USB_DEVICE(0x0a5c, 0x21e3) },
  98         { USB_DEVICE(0x0a5c, 0x21e6) },
  99         { USB_DEVICE(0x0a5c, 0x21e8) },
 100         { USB_DEVICE(0x0a5c, 0x21f3) },
 101         { USB_DEVICE(0x0a5c, 0x21f4) },
 102         { USB_DEVICE(0x413c, 0x8197) },
 103
 104         /* Foxconn - Hon Hai */
 105         { USB_DEVICE(0x0489, 0xe033) },
 106
 107         { }     /* Terminating entry */
 108 };
 109
 110 MODULE_DEVICE_TABLE(usb, btusb_table);
 111
 112 static struct usb_device_id blacklist_table[] = {
 113         /* CSR BlueCore devices */
 114         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 115
 116         /* Broadcom BCM2033 without firmware */
 117         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 118
 119         /* Atheros 3011 with sflash firmware */
 120         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 121         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 122         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 123         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 124         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 125
 126         /* Atheros AR9285 Malbec with sflash firmware */
 127         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 128
 129         /* Atheros 3012 with sflash firmware */
 130         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 131         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 132         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 133         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 134         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 135         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 136         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 137         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 138
 139         /* Atheros AR5BBU12 with sflash firmware */
 140         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 141
 142         /* Atheros AR5BBU12 with sflash firmware */
 143         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 144
 145         /* Broadcom BCM2035 */
 146         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 147         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 148         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 149
 150         /* Broadcom BCM2045 */
 151         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 152         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 153
 154         /* IBM/Lenovo ThinkPad with Broadcom chip */
 155         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 156         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 157
 158         /* HP laptop with Broadcom chip */
 159         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 160
 161         /* Dell laptop with Broadcom chip */
 162         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 163
 164         /* Dell Wireless 370 and 410 devices */
 165         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 166         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 167
 168         /* Belkin F8T012 and F8T013 devices */
 169         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 170         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 171
 172         /* Asus WL-BTD202 device */
 173         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 174
 175         /* Kensington Bluetooth USB adapter */
 176         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 177
 178         /* RTX Telecom based adapters with buggy SCO support */
 179         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 180         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 181
 182         /* CONWISE Technology based adapters with buggy SCO support */
 183         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 184
 185         /* Digianswer devices */
 186         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 187         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 188
 189         /* CSR BlueCore Bluetooth Sniffer */
 190         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 191
 192         /* Frontline ComProbe Bluetooth Sniffer */
 193         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 194
 195         { }     /* Terminating entry */
 196 };
 197
 198 #define BTUSB_MAX_ISOC_FRAMES   10
 199
 200 #define BTUSB_INTR_RUNNING      0
 201 #define BTUSB_BULK_RUNNING      1
 202 #define BTUSB_ISOC_RUNNING      2
 203 #define BTUSB_SUSPENDING        3
 204 #define BTUSB_DID_ISO_RESUME    4
 205
 206 struct btusb_data {
 207         struct hci_dev       *hdev;
 208         struct usb_device    *udev;
 209         struct usb_interface *intf;
 210         struct usb_interface *isoc;
 211
 212         spinlock_t lock;
 213
 214         unsigned long flags;
 215
 216         struct work_struct work;
 217         struct work_struct waker;
 218
 219         struct usb_anchor tx_anchor;
 220         struct usb_anchor intr_anchor;
 221         struct usb_anchor bulk_anchor;
 222         struct usb_anchor isoc_anchor;
 223         struct usb_anchor deferred;
 224         int tx_in_flight;
 225         spinlock_t txlock;
 226
 227         struct usb_endpoint_descriptor *intr_ep;
 228         struct usb_endpoint_descriptor *bulk_tx_ep;
 229         struct usb_endpoint_descriptor *bulk_rx_ep;
 230         struct usb_endpoint_descriptor *isoc_tx_ep;
 231         struct usb_endpoint_descriptor *isoc_rx_ep;
 232
 233         __u8 cmdreq_type;
 234
 235         unsigned int sco_num;
 236         int isoc_altsetting;
 237         int suspend_count;
 238 };
 239
 240 static int inc_tx(struct btusb_data *data)
 241 {
 242         unsigned long flags;
 243         int rv;
 244
 245         spin_lock_irqsave(&data->txlock, flags);
 246         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 247         if (!rv)
 248                 data->tx_in_flight++;
 249         spin_unlock_irqrestore(&data->txlock, flags);
 250
 251         return rv;
 252 }
 253
 254 static void btusb_intr_complete(struct urb *urb)
 255 {
 256         struct hci_dev *hdev = urb->context;
 257         struct btusb_data *data = hci_get_drvdata(hdev);
 258         int err;
 259
 260         BT_DBG("%s urb %p status %d count %d", hdev->name,
 261                                         urb, urb->status, urb->actual_length);
 262
 263         if (!test_bit(HCI_RUNNING, &hdev->flags))
 264                 return;
 265
 266         if (urb->status == 0) {
 267                 hdev->stat.byte_rx += urb->actual_length;
 268
 269                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 270                                                 urb->transfer_buffer,
 271                                                 urb->actual_length) < 0) {
 272                         BT_ERR("%s corrupted event packet", hdev->name);
 273                         hdev->stat.err_rx++;
 274                 }
 275         }
 276
 277         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 278                 return;
 279
 280         usb_mark_last_busy(data->udev);
 281         usb_anchor_urb(urb, &data->intr_anchor);
 282
 283         err = usb_submit_urb(urb, GFP_ATOMIC);
 284         if (err < 0) {
 285                 /* -EPERM: urb is being killed;
 286                  * -ENODEV: device got disconnected */
 287                 if (err != -EPERM && err != -ENODEV)
 288                         BT_ERR("%s urb %p failed to resubmit (%d)",
 289                                                 hdev->name, urb, -err);
 290                 usb_unanchor_urb(urb);
 291         }
 292 }
 293
 294 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 295 {
 296         struct btusb_data *data = hci_get_drvdata(hdev);
 297         struct urb *urb;
 298         unsigned char *buf;
 299         unsigned int pipe;
 300         int err, size;
 301
 302         BT_DBG("%s", hdev->name);
 303
 304         if (!data->intr_ep)
 305                 return -ENODEV;
 306
 307         urb = usb_alloc_urb(0, mem_flags);
 308         if (!urb)
 309                 return -ENOMEM;
 310
 311         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 312
 313         buf = kmalloc(size, mem_flags);
 314         if (!buf) {
 315                 usb_free_urb(urb);
 316                 return -ENOMEM;
 317         }
 318
 319         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 320
 321         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 322                                                 btusb_intr_complete, hdev,
 323                                                 data->intr_ep->bInterval);
 324
 325         urb->transfer_flags |= URB_FREE_BUFFER;
 326
 327         usb_anchor_urb(urb, &data->intr_anchor);
 328
 329         err = usb_submit_urb(urb, mem_flags);
 330         if (err < 0) {
 331                 if (err != -EPERM && err != -ENODEV)
 332                         BT_ERR("%s urb %p submission failed (%d)",
 333                                                 hdev->name, urb, -err);
 334                 usb_unanchor_urb(urb);
 335         }
 336
 337         usb_free_urb(urb);
 338
 339         return err;
 340 }
 341
 342 static void btusb_bulk_complete(struct urb *urb)
 343 {
 344         struct hci_dev *hdev = urb->context;
 345         struct btusb_data *data = hci_get_drvdata(hdev);
 346         int err;
 347
 348         BT_DBG("%s urb %p status %d count %d", hdev->name,
 349                                         urb, urb->status, urb->actual_length);
 350
 351         if (!test_bit(HCI_RUNNING, &hdev->flags))
 352                 return;
 353
 354         if (urb->status == 0) {
 355                 hdev->stat.byte_rx += urb->actual_length;
 356
 357                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 358                                                 urb->transfer_buffer,
 359                                                 urb->actual_length) < 0) {
 360                         BT_ERR("%s corrupted ACL packet", hdev->name);
 361                         hdev->stat.err_rx++;
 362                 }
 363         }
 364
 365         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 366                 return;
 367
 368         usb_anchor_urb(urb, &data->bulk_anchor);
 369         usb_mark_last_busy(data->udev);
 370
 371         err = usb_submit_urb(urb, GFP_ATOMIC);
 372         if (err < 0) {
 373                 /* -EPERM: urb is being killed;
 374                  * -ENODEV: device got disconnected */
 375                 if (err != -EPERM && err != -ENODEV)
 376                         BT_ERR("%s urb %p failed to resubmit (%d)",
 377                                                 hdev->name, urb, -err);
 378                 usb_unanchor_urb(urb);
 379         }
 380 }
 381
 382 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 383 {
 384         struct btusb_data *data = hci_get_drvdata(hdev);
 385         struct urb *urb;
 386         unsigned char *buf;
 387         unsigned int pipe;
 388         int err, size = HCI_MAX_FRAME_SIZE;
 389
 390         BT_DBG("%s", hdev->name);
 391
 392         if (!data->bulk_rx_ep)
 393                 return -ENODEV;
 394
 395         urb = usb_alloc_urb(0, mem_flags);
 396         if (!urb)
 397                 return -ENOMEM;
 398
 399         buf = kmalloc(size, mem_flags);
 400         if (!buf) {
 401                 usb_free_urb(urb);
 402                 return -ENOMEM;
 403         }
 404
 405         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 406
 407         usb_fill_bulk_urb(urb, data->udev, pipe,
 408                                         buf, size, btusb_bulk_complete, hdev);
 409
 410         urb->transfer_flags |= URB_FREE_BUFFER;
 411
 412         usb_mark_last_busy(data->udev);
 413         usb_anchor_urb(urb, &data->bulk_anchor);
 414
 415         err = usb_submit_urb(urb, mem_flags);
 416         if (err < 0) {
 417                 if (err != -EPERM && err != -ENODEV)
 418                         BT_ERR("%s urb %p submission failed (%d)",
 419                                                 hdev->name, urb, -err);
 420                 usb_unanchor_urb(urb);
 421         }
 422
 423         usb_free_urb(urb);
 424
 425         return err;
 426 }
 427
 428 static void btusb_isoc_complete(struct urb *urb)
 429 {
 430         struct hci_dev *hdev = urb->context;
 431         struct btusb_data *data = hci_get_drvdata(hdev);
 432         int i, err;
 433
 434         BT_DBG("%s urb %p status %d count %d", hdev->name,
 435                                         urb, urb->status, urb->actual_length);
 436
 437         if (!test_bit(HCI_RUNNING, &hdev->flags))
 438                 return;
 439
 440         if (urb->status == 0) {
 441                 for (i = 0; i < urb->number_of_packets; i++) {
 442                         unsigned int offset = urb->iso_frame_desc[i].offset;
 443                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 444
 445                         if (urb->iso_frame_desc[i].status)
 446                                 continue;
 447
 448                         hdev->stat.byte_rx += length;
 449
 450                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 451                                                 urb->transfer_buffer + offset,
 452                                                                 length) < 0) {
 453                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 454                                 hdev->stat.err_rx++;
 455                         }
 456                 }
 457         }
 458
 459         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 460                 return;
 461
 462         usb_anchor_urb(urb, &data->isoc_anchor);
 463
 464         err = usb_submit_urb(urb, GFP_ATOMIC);
 465         if (err < 0) {
 466                 /* -EPERM: urb is being killed;
 467                  * -ENODEV: device got disconnected */
 468                 if (err != -EPERM && err != -ENODEV)
 469                         BT_ERR("%s urb %p failed to resubmit (%d)",
 470                                                 hdev->name, urb, -err);
 471                 usb_unanchor_urb(urb);
 472         }
 473 }
 474
 475 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 476 {
 477         int i, offset = 0;
 478
 479         BT_DBG("len %d mtu %d", len, mtu);
 480
 481         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 482                                         i++, offset += mtu, len -= mtu) {
 483                 urb->iso_frame_desc[i].offset = offset;
 484                 urb->iso_frame_desc[i].length = mtu;
 485         }
 486
 487         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 488                 urb->iso_frame_desc[i].offset = offset;
 489                 urb->iso_frame_desc[i].length = len;
 490                 i++;
 491         }
 492
 493         urb->number_of_packets = i;
 494 }
 495
 496 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 497 {
 498         struct btusb_data *data = hci_get_drvdata(hdev);
 499         struct urb *urb;
 500         unsigned char *buf;
 501         unsigned int pipe;
 502         int err, size;
 503
 504         BT_DBG("%s", hdev->name);
 505
 506         if (!data->isoc_rx_ep)
 507                 return -ENODEV;
 508
 509         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 510         if (!urb)
 511                 return -ENOMEM;
 512
 513         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 514                                                 BTUSB_MAX_ISOC_FRAMES;
 515
 516         buf = kmalloc(size, mem_flags);
 517         if (!buf) {
 518                 usb_free_urb(urb);
 519                 return -ENOMEM;
 520         }
 521
 522         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 523
 524         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 525                                 hdev, data->isoc_rx_ep->bInterval);
 526
 527         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 528
 529         __fill_isoc_descriptor(urb, size,
 530                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 531
 532         usb_anchor_urb(urb, &data->isoc_anchor);
 533
 534         err = usb_submit_urb(urb, mem_flags);
 535         if (err < 0) {
 536                 if (err != -EPERM && err != -ENODEV)
 537                         BT_ERR("%s urb %p submission failed (%d)",
 538                                                 hdev->name, urb, -err);
 539                 usb_unanchor_urb(urb);
 540         }
 541
 542         usb_free_urb(urb);
 543
 544         return err;
 545 }
 546
 547 static void btusb_tx_complete(struct urb *urb)
 548 {
 549         struct sk_buff *skb = urb->context;
 550         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 551         struct btusb_data *data = hci_get_drvdata(hdev);
 552
 553         BT_DBG("%s urb %p status %d count %d", hdev->name,
 554                                         urb, urb->status, urb->actual_length);
 555
 556         if (!test_bit(HCI_RUNNING, &hdev->flags))
 557                 goto done;
 558
 559         if (!urb->status)
 560                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 561         else
 562                 hdev->stat.err_tx++;
 563
 564 done:
 565         spin_lock(&data->txlock);
 566         data->tx_in_flight--;
 567         spin_unlock(&data->txlock);
 568
 569         kfree(urb->setup_packet);
 570
 571         kfree_skb(skb);
 572 }
 573
 574 static void btusb_isoc_tx_complete(struct urb *urb)
 575 {
 576         struct sk_buff *skb = urb->context;
 577         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 578
 579         BT_DBG("%s urb %p status %d count %d", hdev->name,
 580                                         urb, urb->status, urb->actual_length);
 581
 582         if (!test_bit(HCI_RUNNING, &hdev->flags))
 583                 goto done;
 584
 585         if (!urb->status)
 586                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 587         else
 588                 hdev->stat.err_tx++;
 589
 590 done:
 591         kfree(urb->setup_packet);
 592
 593         kfree_skb(skb);
 594 }
 595
 596 static int btusb_open(struct hci_dev *hdev)
 597 {
 598         struct btusb_data *data = hci_get_drvdata(hdev);
 599         int err;
 600
 601         BT_DBG("%s", hdev->name);
 602
 603         err = usb_autopm_get_interface(data->intf);
 604         if (err < 0)
 605                 return err;
 606
 607         data->intf->needs_remote_wakeup = 1;
 608
 609         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 610                 goto done;
 611
 612         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 613                 goto done;
 614
 615         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 616         if (err < 0)
 617                 goto failed;
 618
 619         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 620         if (err < 0) {
 621                 usb_kill_anchored_urbs(&data->intr_anchor);
 622                 goto failed;
 623         }
 624
 625         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 626         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 627
 628 done:
 629         usb_autopm_put_interface(data->intf);
 630         return 0;
 631
 632 failed:
 633         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 634         clear_bit(HCI_RUNNING, &hdev->flags);
 635         usb_autopm_put_interface(data->intf);
 636         return err;
 637 }
 638
 639 static void btusb_stop_traffic(struct btusb_data *data)
 640 {
 641         usb_kill_anchored_urbs(&data->intr_anchor);
 642         usb_kill_anchored_urbs(&data->bulk_anchor);
 643         usb_kill_anchored_urbs(&data->isoc_anchor);
 644 }
 645
 646 static int btusb_close(struct hci_dev *hdev)
 647 {
 648         struct btusb_data *data = hci_get_drvdata(hdev);
 649         int err;
 650
 651         BT_DBG("%s", hdev->name);
 652
 653         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 654                 return 0;
 655
 656         cancel_work_sync(&data->work);
 657         cancel_work_sync(&data->waker);
 658
 659         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 660         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 661         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 662
 663         btusb_stop_traffic(data);
 664         err = usb_autopm_get_interface(data->intf);
 665         if (err < 0)
 666                 goto failed;
 667
 668         data->intf->needs_remote_wakeup = 0;
 669         usb_autopm_put_interface(data->intf);
 670
 671 failed:
 672         usb_scuttle_anchored_urbs(&data->deferred);
 673         return 0;
 674 }
 675
 676 static int btusb_flush(struct hci_dev *hdev)
 677 {
 678         struct btusb_data *data = hci_get_drvdata(hdev);
 679
 680         BT_DBG("%s", hdev->name);
 681
 682         usb_kill_anchored_urbs(&data->tx_anchor);
 683
 684         return 0;
 685 }
 686
 687 static int btusb_send_frame(struct sk_buff *skb)
 688 {
 689         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 690         struct btusb_data *data = hci_get_drvdata(hdev);
 691         struct usb_ctrlrequest *dr;
 692         struct urb *urb;
 693         unsigned int pipe;
 694         int err;
 695
 696         BT_DBG("%s", hdev->name);
 697
 698         if (!test_bit(HCI_RUNNING, &hdev->flags))
 699                 return -EBUSY;
 700
 701         switch (bt_cb(skb)->pkt_type) {
 702         case HCI_COMMAND_PKT:
 703                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 704                 if (!urb)
 705                         return -ENOMEM;
 706
 707                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 708                 if (!dr) {
 709                         usb_free_urb(urb);
 710                         return -ENOMEM;
 711                 }
 712
 713                 dr->bRequestType = data->cmdreq_type;
 714                 dr->bRequest     = 0;
 715                 dr->wIndex       = 0;
 716                 dr->wValue       = 0;
 717                 dr->wLength      = __cpu_to_le16(skb->len);
 718
 719                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 720
 721                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 722                                 skb->data, skb->len, btusb_tx_complete, skb);
 723
 724                 hdev->stat.cmd_tx++;
 725                 break;
 726
 727         case HCI_ACLDATA_PKT:
 728                 if (!data->bulk_tx_ep)
 729                         return -ENODEV;
 730
 731                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 732                 if (!urb)
 733                         return -ENOMEM;
 734
 735                 pipe = usb_sndbulkpipe(data->udev,
 736                                         data->bulk_tx_ep->bEndpointAddress);
 737
 738                 usb_fill_bulk_urb(urb, data->udev, pipe,
 739                                 skb->data, skb->len, btusb_tx_complete, skb);
 740
 741                 hdev->stat.acl_tx++;
 742                 break;
 743
 744         case HCI_SCODATA_PKT:
 745                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 746                         return -ENODEV;
 747
 748                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 749                 if (!urb)
 750                         return -ENOMEM;
 751
 752                 pipe = usb_sndisocpipe(data->udev,
 753                                         data->isoc_tx_ep->bEndpointAddress);
 754
 755                 usb_fill_int_urb(urb, data->udev, pipe,
 756                                 skb->data, skb->len, btusb_isoc_tx_complete,
 757                                 skb, data->isoc_tx_ep->bInterval);
 758
 759                 urb->transfer_flags  = URB_ISO_ASAP;
 760
 761                 __fill_isoc_descriptor(urb, skb->len,
 762                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 763
 764                 hdev->stat.sco_tx++;
 765                 goto skip_waking;
 766
 767         default:
 768                 return -EILSEQ;
 769         }
 770
 771         err = inc_tx(data);
 772         if (err) {
 773                 usb_anchor_urb(urb, &data->deferred);
 774                 schedule_work(&data->waker);
 775                 err = 0;
 776                 goto done;
 777         }
 778
 779 skip_waking:
 780         usb_anchor_urb(urb, &data->tx_anchor);
 781
 782         err = usb_submit_urb(urb, GFP_ATOMIC);
 783         if (err < 0) {
 784                 if (err != -EPERM && err != -ENODEV)
 785                         BT_ERR("%s urb %p submission failed (%d)",
 786                                                 hdev->name, urb, -err);
 787                 kfree(urb->setup_packet);
 788                 usb_unanchor_urb(urb);
 789         } else {
 790                 usb_mark_last_busy(data->udev);
 791         }
 792
 793 done:
 794         usb_free_urb(urb);
 795         return err;
 796 }
 797
 798 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 799 {
 800         struct btusb_data *data = hci_get_drvdata(hdev);
 801
 802         BT_DBG("%s evt %d", hdev->name, evt);
 803
 804         if (hdev->conn_hash.sco_num != data->sco_num) {
 805                 data->sco_num = hdev->conn_hash.sco_num;
 806                 schedule_work(&data->work);
 807         }
 808 }
 809
 810 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 811 {
 812         struct btusb_data *data = hci_get_drvdata(hdev);
 813         struct usb_interface *intf = data->isoc;
 814         struct usb_endpoint_descriptor *ep_desc;
 815         int i, err;
 816
 817         if (!data->isoc)
 818                 return -ENODEV;
 819
 820         err = usb_set_interface(data->udev, 1, altsetting);
 821         if (err < 0) {
 822                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 823                 return err;
 824         }
 825
 826         data->isoc_altsetting = altsetting;
 827
 828         data->isoc_tx_ep = NULL;
 829         data->isoc_rx_ep = NULL;
 830
 831         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 832                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 833
 834                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 835                         data->isoc_tx_ep = ep_desc;
 836                         continue;
 837                 }
 838
 839                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 840                         data->isoc_rx_ep = ep_desc;
 841                         continue;
 842                 }
 843         }
 844
 845         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 846                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 847                 return -ENODEV;
 848         }
 849
 850         return 0;
 851 }
 852
 853 static void btusb_work(struct work_struct *work)
 854 {
 855         struct btusb_data *data = container_of(work, struct btusb_data, work);
 856         struct hci_dev *hdev = data->hdev;
 857         int new_alts;
 858         int err;
 859
 860         if (hdev->conn_hash.sco_num > 0) {
 861                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 862                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 863                         if (err < 0) {
 864                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 865                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 866                                 return;
 867                         }
 868
 869                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 870                 }
 871
 872                 if (hdev->voice_setting & 0x0020) {
 873                         static const int alts[3] = { 2, 4, 5 };
 874                         new_alts = alts[hdev->conn_hash.sco_num - 1];
 875                 } else {
 876                         new_alts = hdev->conn_hash.sco_num;
 877                 }
 878
 879                 if (data->isoc_altsetting != new_alts) {
 880                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 881                         usb_kill_anchored_urbs(&data->isoc_anchor);
 882
 883                         if (__set_isoc_interface(hdev, new_alts) < 0)
 884                                 return;
 885                 }
 886
 887                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 888                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 889                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 890                         else
 891                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 892                 }
 893         } else {
 894                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 895                 usb_kill_anchored_urbs(&data->isoc_anchor);
 896
 897                 __set_isoc_interface(hdev, 0);
 898                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 899                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 900         }
 901 }
 902
 903 static void btusb_waker(struct work_struct *work)
 904 {
 905         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 906         int err;
 907
 908         err = usb_autopm_get_interface(data->intf);
 909         if (err < 0)
 910                 return;
 911
 912         usb_autopm_put_interface(data->intf);
 913 }
 914
 915 static int btusb_probe(struct usb_interface *intf,
 916                                 const struct usb_device_id *id)
 917 {
 918         struct usb_endpoint_descriptor *ep_desc;
 919         struct btusb_data *data;
 920         struct hci_dev *hdev;
 921         int i, err;
 922
 923         BT_DBG("intf %p id %p", intf, id);
 924
 925         /* interface numbers are hardcoded in the spec */
 926         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 927                 return -ENODEV;
 928
 929         if (!id->driver_info) {
 930                 const struct usb_device_id *match;
 931                 match = usb_match_id(intf, blacklist_table);
 932                 if (match)
 933                         id = match;
 934         }
 935
 936         if (id->driver_info == BTUSB_IGNORE)
 937                 return -ENODEV;
 938
 939         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 940                 return -ENODEV;
 941
 942         if (ignore_csr && id->driver_info & BTUSB_CSR)
 943                 return -ENODEV;
 944
 945         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 946                 return -ENODEV;
 947
 948         if (id->driver_info & BTUSB_ATH3012) {
 949                 struct usb_device *udev = interface_to_usbdev(intf);
 950
 951                 /* Old firmware would otherwise let ath3k driver load
 952                  * patch and sysconfig files */
 953                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 954                         return -ENODEV;
 955         }
 956
 957         data = kzalloc(sizeof(*data), GFP_KERNEL);
 958         if (!data)
 959                 return -ENOMEM;
 960
 961         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 962                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 963
 964                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 965                         data->intr_ep = ep_desc;
 966                         continue;
 967                 }
 968
 969                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 970                         data->bulk_tx_ep = ep_desc;
 971                         continue;
 972                 }
 973
 974                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 975                         data->bulk_rx_ep = ep_desc;
 976                         continue;
 977                 }
 978         }
 979
 980         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 981                 kfree(data);
 982                 return -ENODEV;
 983         }
 984
 985         data->cmdreq_type = USB_TYPE_CLASS;
 986
 987         data->udev = interface_to_usbdev(intf);
 988         data->intf = intf;
 989
 990         spin_lock_init(&data->lock);
 991
 992         INIT_WORK(&data->work, btusb_work);
 993         INIT_WORK(&data->waker, btusb_waker);
 994         spin_lock_init(&data->txlock);
 995
 996         init_usb_anchor(&data->tx_anchor);
 997         init_usb_anchor(&data->intr_anchor);
 998         init_usb_anchor(&data->bulk_anchor);
 999         init_usb_anchor(&data->isoc_anchor);
1000         init_usb_anchor(&data->deferred);
1001
1002         hdev = hci_alloc_dev();
1003         if (!hdev) {
1004                 kfree(data);
1005                 return -ENOMEM;
1006         }
1007
1008         hdev->bus = HCI_USB;
1009         hci_set_drvdata(hdev, data);
1010
1011         data->hdev = hdev;
1012
1013         SET_HCIDEV_DEV(hdev, &intf->dev);
1014
1015         hdev->open     = btusb_open;
1016         hdev->close    = btusb_close;
1017         hdev->flush    = btusb_flush;
1018         hdev->send     = btusb_send_frame;
1019         hdev->notify   = btusb_notify;
1020
1021         /* Interface numbers are hardcoded in the specification */
1022         data->isoc = usb_ifnum_to_if(data->udev, 1);
1023
1024         if (!reset)
1025                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1026
1027         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1028                 if (!disable_scofix)
1029                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1030         }
1031
1032         if (id->driver_info & BTUSB_BROKEN_ISOC)
1033                 data->isoc = NULL;
1034
1035         if (id->driver_info & BTUSB_DIGIANSWER) {
1036                 data->cmdreq_type = USB_TYPE_VENDOR;
1037                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1038         }
1039
1040         if (id->driver_info & BTUSB_CSR) {
1041                 struct usb_device *udev = data->udev;
1042
1043                 /* Old firmware would otherwise execute USB reset */
1044                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1045                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1046         }
1047
1048         if (id->driver_info & BTUSB_SNIFFER) {
1049                 struct usb_device *udev = data->udev;
1050
1051                 /* New sniffer firmware has crippled HCI interface */
1052                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1053                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1054
1055                 data->isoc = NULL;
1056         }
1057
1058         if (id->driver_info & BTUSB_BCM92035) {
1059                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1060                 struct sk_buff *skb;
1061
1062                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1063                 if (skb) {
1064                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1065                         skb_queue_tail(&hdev->driver_init, skb);
1066                 }
1067         }
1068
1069         if (data->isoc) {
1070                 err = usb_driver_claim_interface(&btusb_driver,
1071                                                         data->isoc, data);
1072                 if (err < 0) {
1073                         hci_free_dev(hdev);
1074                         kfree(data);
1075                         return err;
1076                 }
1077         }
1078
1079         err = hci_register_dev(hdev);
1080         if (err < 0) {
1081                 hci_free_dev(hdev);
1082                 kfree(data);
1083                 return err;
1084         }
1085
1086         usb_set_intfdata(intf, data);
1087
1088         return 0;
1089 }
1090
1091 static void btusb_disconnect(struct usb_interface *intf)
1092 {
1093         struct btusb_data *data = usb_get_intfdata(intf);
1094         struct hci_dev *hdev;
1095
1096         BT_DBG("intf %p", intf);
1097
1098         if (!data)
1099                 return;
1100
1101         hdev = data->hdev;
1102         usb_set_intfdata(data->intf, NULL);
1103
1104         if (data->isoc)
1105                 usb_set_intfdata(data->isoc, NULL);
1106
1107         hci_unregister_dev(hdev);
1108
1109         if (intf == data->isoc)
1110                 usb_driver_release_interface(&btusb_driver, data->intf);
1111         else if (data->isoc)
1112                 usb_driver_release_interface(&btusb_driver, data->isoc);
1113
1114         hci_free_dev(hdev);
1115         kfree(data);
1116 }
1117
1118 #ifdef CONFIG_PM
1119 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1120 {
1121         struct btusb_data *data = usb_get_intfdata(intf);
1122
1123         BT_DBG("intf %p", intf);
1124
1125         if (data->suspend_count++)
1126                 return 0;
1127
1128         spin_lock_irq(&data->txlock);
1129         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1130                 set_bit(BTUSB_SUSPENDING, &data->flags);
1131                 spin_unlock_irq(&data->txlock);
1132         } else {
1133                 spin_unlock_irq(&data->txlock);
1134                 data->suspend_count--;
1135                 return -EBUSY;
1136         }
1137
1138         cancel_work_sync(&data->work);
1139
1140         btusb_stop_traffic(data);
1141         usb_kill_anchored_urbs(&data->tx_anchor);
1142
1143         return 0;
1144 }
1145
1146 static void play_deferred(struct btusb_data *data)
1147 {
1148         struct urb *urb;
1149         int err;
1150
1151         while ((urb = usb_get_from_anchor(&data->deferred))) {
1152                 err = usb_submit_urb(urb, GFP_ATOMIC);
1153                 if (err < 0)
1154                         break;
1155
1156                 data->tx_in_flight++;
1157         }
1158         usb_scuttle_anchored_urbs(&data->deferred);
1159 }
1160
1161 static int btusb_resume(struct usb_interface *intf)
1162 {
1163         struct btusb_data *data = usb_get_intfdata(intf);
1164         struct hci_dev *hdev = data->hdev;
1165         int err = 0;
1166
1167         BT_DBG("intf %p", intf);
1168
1169         if (--data->suspend_count)
1170                 return 0;
1171
1172         if (!test_bit(HCI_RUNNING, &hdev->flags))
1173                 goto done;
1174
1175         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1176                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1177                 if (err < 0) {
1178                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1179                         goto failed;
1180                 }
1181         }
1182
1183         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1184                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1185                 if (err < 0) {
1186                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1187                         goto failed;
1188                 }
1189
1190                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1191         }
1192
1193         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1194                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1195                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1196                 else
1197                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1198         }
1199
1200         spin_lock_irq(&data->txlock);
1201         play_deferred(data);
1202         clear_bit(BTUSB_SUSPENDING, &data->flags);
1203         spin_unlock_irq(&data->txlock);
1204         schedule_work(&data->work);
1205
1206         return 0;
1207
1208 failed:
1209         usb_scuttle_anchored_urbs(&data->deferred);
1210 done:
1211         spin_lock_irq(&data->txlock);
1212         clear_bit(BTUSB_SUSPENDING, &data->flags);
1213         spin_unlock_irq(&data->txlock);
1214
1215         return err;
1216 }
1217 #endif
1218
1219 static struct usb_driver btusb_driver = {
1220         .name           = "btusb",
1221         .probe          = btusb_probe,
1222         .disconnect     = btusb_disconnect,
1223 #ifdef CONFIG_PM
1224         .suspend        = btusb_suspend,
1225         .resume         = btusb_resume,
1226 #endif
1227         .id_table       = btusb_table,
1228         .supports_autosuspend = 1,
1229         .disable_hub_initiated_lpm = 1,
1230 };
1231
1232 module_usb_driver(btusb_driver);
1233
1234 module_param(ignore_dga, bool, 0644);
1235 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1236
1237 module_param(ignore_csr, bool, 0644);
1238 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1239
1240 module_param(ignore_sniffer, bool, 0644);
1241 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1242
1243 module_param(disable_scofix, bool, 0644);
1244 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1245
1246 module_param(force_scofix, bool, 0644);
1247 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1248
1249 module_param(reset, bool, 0644);
1250 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1251
1252 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1253 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1254 MODULE_VERSION(VERSION);
1255 MODULE_LICENSE("GPL");