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