Pileus Git - ~andy/linux/blob - 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/kernel.h>
  25 #include <linux/module.h>
  26 #include <linux/init.h>
  27 #include <linux/slab.h>
  28 #include <linux/types.h>
  29 #include <linux/sched.h>
  30 #include <linux/errno.h>
  31 #include <linux/skbuff.h>
  32
  33 #include <linux/usb.h>
  34
  35 #include <net/bluetooth/bluetooth.h>
  36 #include <net/bluetooth/hci_core.h>
  37
  38 #define VERSION "0.6"
  39
  40 static bool ignore_dga;
  41 static bool ignore_csr;
  42 static bool ignore_sniffer;
  43 static bool disable_scofix;
  44 static bool force_scofix;
  45
  46 static bool reset = 1;
  47
  48 static struct usb_driver btusb_driver;
  49
  50 #define BTUSB_IGNORE            0x01
  51 #define BTUSB_DIGIANSWER        0x02
  52 #define BTUSB_CSR               0x04
  53 #define BTUSB_SNIFFER           0x08
  54 #define BTUSB_BCM92035          0x10
  55 #define BTUSB_BROKEN_ISOC       0x20
  56 #define BTUSB_WRONG_SCO_MTU     0x40
  57 #define BTUSB_ATH3012           0x80
  58
  59 static struct usb_device_id btusb_table[] = {
  60         /* Generic Bluetooth USB device */
  61         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  62
  63         /* Broadcom SoftSailing reporting vendor specific */
  64         { USB_DEVICE(0x0a5c, 0x21e1) },
  65
  66         /* Apple MacBookPro 7,1 */
  67         { USB_DEVICE(0x05ac, 0x8213) },
  68
  69         /* Apple iMac11,1 */
  70         { USB_DEVICE(0x05ac, 0x8215) },
  71
  72         /* Apple MacBookPro6,2 */
  73         { USB_DEVICE(0x05ac, 0x8218) },
  74
  75         /* Apple MacBookAir3,1, MacBookAir3,2 */
  76         { USB_DEVICE(0x05ac, 0x821b) },
  77
  78         /* Apple MacBookAir4,1 */
  79         { USB_DEVICE(0x05ac, 0x821f) },
  80
  81         /* Apple MacBookPro8,2 */
  82         { USB_DEVICE(0x05ac, 0x821a) },
  83
  84         /* Apple MacMini5,1 */
  85         { USB_DEVICE(0x05ac, 0x8281) },
  86
  87         /* AVM BlueFRITZ! USB v2.0 */
  88         { USB_DEVICE(0x057c, 0x3800) },
  89
  90         /* Bluetooth Ultraport Module from IBM */
  91         { USB_DEVICE(0x04bf, 0x030a) },
  92
  93         /* ALPS Modules with non-standard id */
  94         { USB_DEVICE(0x044e, 0x3001) },
  95         { USB_DEVICE(0x044e, 0x3002) },
  96
  97         /* Ericsson with non-standard id */
  98         { USB_DEVICE(0x0bdb, 0x1002) },
  99
 100         /* Canyon CN-BTU1 with HID interfaces */
 101         { USB_DEVICE(0x0c10, 0x0000) },
 102
 103         /* Broadcom BCM20702A0 */
 104         { USB_DEVICE(0x0489, 0xe042) },
 105         { USB_DEVICE(0x0a5c, 0x21e3) },
 106         { USB_DEVICE(0x0a5c, 0x21e6) },
 107         { USB_DEVICE(0x0a5c, 0x21e8) },
 108         { USB_DEVICE(0x0a5c, 0x21f3) },
 109         { USB_DEVICE(0x413c, 0x8197) },
 110
 111         /* Foxconn - Hon Hai */
 112         { USB_DEVICE(0x0489, 0xe033) },
 113
 114         { }     /* Terminating entry */
 115 };
 116
 117 MODULE_DEVICE_TABLE(usb, btusb_table);
 118
 119 static struct usb_device_id blacklist_table[] = {
 120         /* CSR BlueCore devices */
 121         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 122
 123         /* Broadcom BCM2033 without firmware */
 124         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 125
 126         /* Atheros 3011 with sflash firmware */
 127         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 128         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 129         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 130         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 131         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 132
 133         /* Atheros AR9285 Malbec with sflash firmware */
 134         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 135
 136         /* Atheros 3012 with sflash firmware */
 137         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 138         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 139         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 140         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 141         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 142         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 143         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 144
 145         /* Atheros AR5BBU12 with sflash firmware */
 146         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 147
 148         /* Atheros AR5BBU12 with sflash firmware */
 149         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 150
 151         /* Broadcom BCM2035 */
 152         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 153         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 154         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 155
 156         /* Broadcom BCM2045 */
 157         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 158         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 159
 160         /* IBM/Lenovo ThinkPad with Broadcom chip */
 161         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 162         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 163
 164         /* HP laptop with Broadcom chip */
 165         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 166
 167         /* Dell laptop with Broadcom chip */
 168         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 169
 170         /* Dell Wireless 370 and 410 devices */
 171         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 172         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 173
 174         /* Belkin F8T012 and F8T013 devices */
 175         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 176         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 177
 178         /* Asus WL-BTD202 device */
 179         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 180
 181         /* Kensington Bluetooth USB adapter */
 182         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 183
 184         /* RTX Telecom based adapters with buggy SCO support */
 185         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 186         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 187
 188         /* CONWISE Technology based adapters with buggy SCO support */
 189         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 190
 191         /* Digianswer devices */
 192         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 193         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 194
 195         /* CSR BlueCore Bluetooth Sniffer */
 196         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 197
 198         /* Frontline ComProbe Bluetooth Sniffer */
 199         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 200
 201         { }     /* Terminating entry */
 202 };
 203
 204 #define BTUSB_MAX_ISOC_FRAMES   10
 205
 206 #define BTUSB_INTR_RUNNING      0
 207 #define BTUSB_BULK_RUNNING      1
 208 #define BTUSB_ISOC_RUNNING      2
 209 #define BTUSB_SUSPENDING        3
 210 #define BTUSB_DID_ISO_RESUME    4
 211
 212 struct btusb_data {
 213         struct hci_dev       *hdev;
 214         struct usb_device    *udev;
 215         struct usb_interface *intf;
 216         struct usb_interface *isoc;
 217
 218         spinlock_t lock;
 219
 220         unsigned long flags;
 221
 222         struct work_struct work;
 223         struct work_struct waker;
 224
 225         struct usb_anchor tx_anchor;
 226         struct usb_anchor intr_anchor;
 227         struct usb_anchor bulk_anchor;
 228         struct usb_anchor isoc_anchor;
 229         struct usb_anchor deferred;
 230         int tx_in_flight;
 231         spinlock_t txlock;
 232
 233         struct usb_endpoint_descriptor *intr_ep;
 234         struct usb_endpoint_descriptor *bulk_tx_ep;
 235         struct usb_endpoint_descriptor *bulk_rx_ep;
 236         struct usb_endpoint_descriptor *isoc_tx_ep;
 237         struct usb_endpoint_descriptor *isoc_rx_ep;
 238
 239         __u8 cmdreq_type;
 240
 241         unsigned int sco_num;
 242         int isoc_altsetting;
 243         int suspend_count;
 244 };
 245
 246 static int inc_tx(struct btusb_data *data)
 247 {
 248         unsigned long flags;
 249         int rv;
 250
 251         spin_lock_irqsave(&data->txlock, flags);
 252         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 253         if (!rv)
 254                 data->tx_in_flight++;
 255         spin_unlock_irqrestore(&data->txlock, flags);
 256
 257         return rv;
 258 }
 259
 260 static void btusb_intr_complete(struct urb *urb)
 261 {
 262         struct hci_dev *hdev = urb->context;
 263         struct btusb_data *data = hci_get_drvdata(hdev);
 264         int err;
 265
 266         BT_DBG("%s urb %p status %d count %d", hdev->name,
 267                                         urb, urb->status, urb->actual_length);
 268
 269         if (!test_bit(HCI_RUNNING, &hdev->flags))
 270                 return;
 271
 272         if (urb->status == 0) {
 273                 hdev->stat.byte_rx += urb->actual_length;
 274
 275                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 276                                                 urb->transfer_buffer,
 277                                                 urb->actual_length) < 0) {
 278                         BT_ERR("%s corrupted event packet", hdev->name);
 279                         hdev->stat.err_rx++;
 280                 }
 281         }
 282
 283         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 284                 return;
 285
 286         usb_mark_last_busy(data->udev);
 287         usb_anchor_urb(urb, &data->intr_anchor);
 288
 289         err = usb_submit_urb(urb, GFP_ATOMIC);
 290         if (err < 0) {
 291                 /* -EPERM: urb is being killed;
 292                  * -ENODEV: device got disconnected */
 293                 if (err != -EPERM && err != -ENODEV)
 294                         BT_ERR("%s urb %p failed to resubmit (%d)",
 295                                                 hdev->name, urb, -err);
 296                 usb_unanchor_urb(urb);
 297         }
 298 }
 299
 300 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 301 {
 302         struct btusb_data *data = hci_get_drvdata(hdev);
 303         struct urb *urb;
 304         unsigned char *buf;
 305         unsigned int pipe;
 306         int err, size;
 307
 308         BT_DBG("%s", hdev->name);
 309
 310         if (!data->intr_ep)
 311                 return -ENODEV;
 312
 313         urb = usb_alloc_urb(0, mem_flags);
 314         if (!urb)
 315                 return -ENOMEM;
 316
 317         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 318
 319         buf = kmalloc(size, mem_flags);
 320         if (!buf) {
 321                 usb_free_urb(urb);
 322                 return -ENOMEM;
 323         }
 324
 325         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 326
 327         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 328                                                 btusb_intr_complete, hdev,
 329                                                 data->intr_ep->bInterval);
 330
 331         urb->transfer_flags |= URB_FREE_BUFFER;
 332
 333         usb_anchor_urb(urb, &data->intr_anchor);
 334
 335         err = usb_submit_urb(urb, mem_flags);
 336         if (err < 0) {
 337                 if (err != -EPERM && err != -ENODEV)
 338                         BT_ERR("%s urb %p submission failed (%d)",
 339                                                 hdev->name, urb, -err);
 340                 usb_unanchor_urb(urb);
 341         }
 342
 343         usb_free_urb(urb);
 344
 345         return err;
 346 }
 347
 348 static void btusb_bulk_complete(struct urb *urb)
 349 {
 350         struct hci_dev *hdev = urb->context;
 351         struct btusb_data *data = hci_get_drvdata(hdev);
 352         int err;
 353
 354         BT_DBG("%s urb %p status %d count %d", hdev->name,
 355                                         urb, urb->status, urb->actual_length);
 356
 357         if (!test_bit(HCI_RUNNING, &hdev->flags))
 358                 return;
 359
 360         if (urb->status == 0) {
 361                 hdev->stat.byte_rx += urb->actual_length;
 362
 363                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 364                                                 urb->transfer_buffer,
 365                                                 urb->actual_length) < 0) {
 366                         BT_ERR("%s corrupted ACL packet", hdev->name);
 367                         hdev->stat.err_rx++;
 368                 }
 369         }
 370
 371         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 372                 return;
 373
 374         usb_anchor_urb(urb, &data->bulk_anchor);
 375         usb_mark_last_busy(data->udev);
 376
 377         err = usb_submit_urb(urb, GFP_ATOMIC);
 378         if (err < 0) {
 379                 /* -EPERM: urb is being killed;
 380                  * -ENODEV: device got disconnected */
 381                 if (err != -EPERM && err != -ENODEV)
 382                         BT_ERR("%s urb %p failed to resubmit (%d)",
 383                                                 hdev->name, urb, -err);
 384                 usb_unanchor_urb(urb);
 385         }
 386 }
 387
 388 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 389 {
 390         struct btusb_data *data = hci_get_drvdata(hdev);
 391         struct urb *urb;
 392         unsigned char *buf;
 393         unsigned int pipe;
 394         int err, size = HCI_MAX_FRAME_SIZE;
 395
 396         BT_DBG("%s", hdev->name);
 397
 398         if (!data->bulk_rx_ep)
 399                 return -ENODEV;
 400
 401         urb = usb_alloc_urb(0, mem_flags);
 402         if (!urb)
 403                 return -ENOMEM;
 404
 405         buf = kmalloc(size, mem_flags);
 406         if (!buf) {
 407                 usb_free_urb(urb);
 408                 return -ENOMEM;
 409         }
 410
 411         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 412
 413         usb_fill_bulk_urb(urb, data->udev, pipe,
 414                                         buf, size, btusb_bulk_complete, hdev);
 415
 416         urb->transfer_flags |= URB_FREE_BUFFER;
 417
 418         usb_mark_last_busy(data->udev);
 419         usb_anchor_urb(urb, &data->bulk_anchor);
 420
 421         err = usb_submit_urb(urb, mem_flags);
 422         if (err < 0) {
 423                 if (err != -EPERM && err != -ENODEV)
 424                         BT_ERR("%s urb %p submission failed (%d)",
 425                                                 hdev->name, urb, -err);
 426                 usb_unanchor_urb(urb);
 427         }
 428
 429         usb_free_urb(urb);
 430
 431         return err;
 432 }
 433
 434 static void btusb_isoc_complete(struct urb *urb)
 435 {
 436         struct hci_dev *hdev = urb->context;
 437         struct btusb_data *data = hci_get_drvdata(hdev);
 438         int i, err;
 439
 440         BT_DBG("%s urb %p status %d count %d", hdev->name,
 441                                         urb, urb->status, urb->actual_length);
 442
 443         if (!test_bit(HCI_RUNNING, &hdev->flags))
 444                 return;
 445
 446         if (urb->status == 0) {
 447                 for (i = 0; i < urb->number_of_packets; i++) {
 448                         unsigned int offset = urb->iso_frame_desc[i].offset;
 449                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 450
 451                         if (urb->iso_frame_desc[i].status)
 452                                 continue;
 453
 454                         hdev->stat.byte_rx += length;
 455
 456                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 457                                                 urb->transfer_buffer + offset,
 458                                                                 length) < 0) {
 459                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 460                                 hdev->stat.err_rx++;
 461                         }
 462                 }
 463         }
 464
 465         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 466                 return;
 467
 468         usb_anchor_urb(urb, &data->isoc_anchor);
 469
 470         err = usb_submit_urb(urb, GFP_ATOMIC);
 471         if (err < 0) {
 472                 /* -EPERM: urb is being killed;
 473                  * -ENODEV: device got disconnected */
 474                 if (err != -EPERM && err != -ENODEV)
 475                         BT_ERR("%s urb %p failed to resubmit (%d)",
 476                                                 hdev->name, urb, -err);
 477                 usb_unanchor_urb(urb);
 478         }
 479 }
 480
 481 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 482 {
 483         int i, offset = 0;
 484
 485         BT_DBG("len %d mtu %d", len, mtu);
 486
 487         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 488                                         i++, offset += mtu, len -= mtu) {
 489                 urb->iso_frame_desc[i].offset = offset;
 490                 urb->iso_frame_desc[i].length = mtu;
 491         }
 492
 493         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 494                 urb->iso_frame_desc[i].offset = offset;
 495                 urb->iso_frame_desc[i].length = len;
 496                 i++;
 497         }
 498
 499         urb->number_of_packets = i;
 500 }
 501
 502 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 503 {
 504         struct btusb_data *data = hci_get_drvdata(hdev);
 505         struct urb *urb;
 506         unsigned char *buf;
 507         unsigned int pipe;
 508         int err, size;
 509
 510         BT_DBG("%s", hdev->name);
 511
 512         if (!data->isoc_rx_ep)
 513                 return -ENODEV;
 514
 515         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 516         if (!urb)
 517                 return -ENOMEM;
 518
 519         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 520                                                 BTUSB_MAX_ISOC_FRAMES;
 521
 522         buf = kmalloc(size, mem_flags);
 523         if (!buf) {
 524                 usb_free_urb(urb);
 525                 return -ENOMEM;
 526         }
 527
 528         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 529
 530         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 531                                 hdev, data->isoc_rx_ep->bInterval);
 532
 533         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 534
 535         __fill_isoc_descriptor(urb, size,
 536                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 537
 538         usb_anchor_urb(urb, &data->isoc_anchor);
 539
 540         err = usb_submit_urb(urb, mem_flags);
 541         if (err < 0) {
 542                 if (err != -EPERM && err != -ENODEV)
 543                         BT_ERR("%s urb %p submission failed (%d)",
 544                                                 hdev->name, urb, -err);
 545                 usb_unanchor_urb(urb);
 546         }
 547
 548         usb_free_urb(urb);
 549
 550         return err;
 551 }
 552
 553 static void btusb_tx_complete(struct urb *urb)
 554 {
 555         struct sk_buff *skb = urb->context;
 556         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 557         struct btusb_data *data = hci_get_drvdata(hdev);
 558
 559         BT_DBG("%s urb %p status %d count %d", hdev->name,
 560                                         urb, urb->status, urb->actual_length);
 561
 562         if (!test_bit(HCI_RUNNING, &hdev->flags))
 563                 goto done;
 564
 565         if (!urb->status)
 566                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 567         else
 568                 hdev->stat.err_tx++;
 569
 570 done:
 571         spin_lock(&data->txlock);
 572         data->tx_in_flight--;
 573         spin_unlock(&data->txlock);
 574
 575         kfree(urb->setup_packet);
 576
 577         kfree_skb(skb);
 578 }
 579
 580 static void btusb_isoc_tx_complete(struct urb *urb)
 581 {
 582         struct sk_buff *skb = urb->context;
 583         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 584
 585         BT_DBG("%s urb %p status %d count %d", hdev->name,
 586                                         urb, urb->status, urb->actual_length);
 587
 588         if (!test_bit(HCI_RUNNING, &hdev->flags))
 589                 goto done;
 590
 591         if (!urb->status)
 592                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 593         else
 594                 hdev->stat.err_tx++;
 595
 596 done:
 597         kfree(urb->setup_packet);
 598
 599         kfree_skb(skb);
 600 }
 601
 602 static int btusb_open(struct hci_dev *hdev)
 603 {
 604         struct btusb_data *data = hci_get_drvdata(hdev);
 605         int err;
 606
 607         BT_DBG("%s", hdev->name);
 608
 609         err = usb_autopm_get_interface(data->intf);
 610         if (err < 0)
 611                 return err;
 612
 613         data->intf->needs_remote_wakeup = 1;
 614
 615         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 616                 goto done;
 617
 618         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 619                 goto done;
 620
 621         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 622         if (err < 0)
 623                 goto failed;
 624
 625         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 626         if (err < 0) {
 627                 usb_kill_anchored_urbs(&data->intr_anchor);
 628                 goto failed;
 629         }
 630
 631         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 632         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 633
 634 done:
 635         usb_autopm_put_interface(data->intf);
 636         return 0;
 637
 638 failed:
 639         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 640         clear_bit(HCI_RUNNING, &hdev->flags);
 641         usb_autopm_put_interface(data->intf);
 642         return err;
 643 }
 644
 645 static void btusb_stop_traffic(struct btusb_data *data)
 646 {
 647         usb_kill_anchored_urbs(&data->intr_anchor);
 648         usb_kill_anchored_urbs(&data->bulk_anchor);
 649         usb_kill_anchored_urbs(&data->isoc_anchor);
 650 }
 651
 652 static int btusb_close(struct hci_dev *hdev)
 653 {
 654         struct btusb_data *data = hci_get_drvdata(hdev);
 655         int err;
 656
 657         BT_DBG("%s", hdev->name);
 658
 659         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 660                 return 0;
 661
 662         cancel_work_sync(&data->work);
 663         cancel_work_sync(&data->waker);
 664
 665         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 666         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 667         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 668
 669         btusb_stop_traffic(data);
 670         err = usb_autopm_get_interface(data->intf);
 671         if (err < 0)
 672                 goto failed;
 673
 674         data->intf->needs_remote_wakeup = 0;
 675         usb_autopm_put_interface(data->intf);
 676
 677 failed:
 678         usb_scuttle_anchored_urbs(&data->deferred);
 679         return 0;
 680 }
 681
 682 static int btusb_flush(struct hci_dev *hdev)
 683 {
 684         struct btusb_data *data = hci_get_drvdata(hdev);
 685
 686         BT_DBG("%s", hdev->name);
 687
 688         usb_kill_anchored_urbs(&data->tx_anchor);
 689
 690         return 0;
 691 }
 692
 693 static int btusb_send_frame(struct sk_buff *skb)
 694 {
 695         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 696         struct btusb_data *data = hci_get_drvdata(hdev);
 697         struct usb_ctrlrequest *dr;
 698         struct urb *urb;
 699         unsigned int pipe;
 700         int err;
 701
 702         BT_DBG("%s", hdev->name);
 703
 704         if (!test_bit(HCI_RUNNING, &hdev->flags))
 705                 return -EBUSY;
 706
 707         switch (bt_cb(skb)->pkt_type) {
 708         case HCI_COMMAND_PKT:
 709                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 710                 if (!urb)
 711                         return -ENOMEM;
 712
 713                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 714                 if (!dr) {
 715                         usb_free_urb(urb);
 716                         return -ENOMEM;
 717                 }
 718
 719                 dr->bRequestType = data->cmdreq_type;
 720                 dr->bRequest     = 0;
 721                 dr->wIndex       = 0;
 722                 dr->wValue       = 0;
 723                 dr->wLength      = __cpu_to_le16(skb->len);
 724
 725                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 726
 727                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 728                                 skb->data, skb->len, btusb_tx_complete, skb);
 729
 730                 hdev->stat.cmd_tx++;
 731                 break;
 732
 733         case HCI_ACLDATA_PKT:
 734                 if (!data->bulk_tx_ep)
 735                         return -ENODEV;
 736
 737                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 738                 if (!urb)
 739                         return -ENOMEM;
 740
 741                 pipe = usb_sndbulkpipe(data->udev,
 742                                         data->bulk_tx_ep->bEndpointAddress);
 743
 744                 usb_fill_bulk_urb(urb, data->udev, pipe,
 745                                 skb->data, skb->len, btusb_tx_complete, skb);
 746
 747                 hdev->stat.acl_tx++;
 748                 break;
 749
 750         case HCI_SCODATA_PKT:
 751                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 752                         return -ENODEV;
 753
 754                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 755                 if (!urb)
 756                         return -ENOMEM;
 757
 758                 pipe = usb_sndisocpipe(data->udev,
 759                                         data->isoc_tx_ep->bEndpointAddress);
 760
 761                 usb_fill_int_urb(urb, data->udev, pipe,
 762                                 skb->data, skb->len, btusb_isoc_tx_complete,
 763                                 skb, data->isoc_tx_ep->bInterval);
 764
 765                 urb->transfer_flags  = URB_ISO_ASAP;
 766
 767                 __fill_isoc_descriptor(urb, skb->len,
 768                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 769
 770                 hdev->stat.sco_tx++;
 771                 goto skip_waking;
 772
 773         default:
 774                 return -EILSEQ;
 775         }
 776
 777         err = inc_tx(data);
 778         if (err) {
 779                 usb_anchor_urb(urb, &data->deferred);
 780                 schedule_work(&data->waker);
 781                 err = 0;
 782                 goto done;
 783         }
 784
 785 skip_waking:
 786         usb_anchor_urb(urb, &data->tx_anchor);
 787
 788         err = usb_submit_urb(urb, GFP_ATOMIC);
 789         if (err < 0) {
 790                 if (err != -EPERM && err != -ENODEV)
 791                         BT_ERR("%s urb %p submission failed (%d)",
 792                                                 hdev->name, urb, -err);
 793                 kfree(urb->setup_packet);
 794                 usb_unanchor_urb(urb);
 795         } else {
 796                 usb_mark_last_busy(data->udev);
 797         }
 798
 799 done:
 800         usb_free_urb(urb);
 801         return err;
 802 }
 803
 804 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 805 {
 806         struct btusb_data *data = hci_get_drvdata(hdev);
 807
 808         BT_DBG("%s evt %d", hdev->name, evt);
 809
 810         if (hdev->conn_hash.sco_num != data->sco_num) {
 811                 data->sco_num = hdev->conn_hash.sco_num;
 812                 schedule_work(&data->work);
 813         }
 814 }
 815
 816 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 817 {
 818         struct btusb_data *data = hci_get_drvdata(hdev);
 819         struct usb_interface *intf = data->isoc;
 820         struct usb_endpoint_descriptor *ep_desc;
 821         int i, err;
 822
 823         if (!data->isoc)
 824                 return -ENODEV;
 825
 826         err = usb_set_interface(data->udev, 1, altsetting);
 827         if (err < 0) {
 828                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 829                 return err;
 830         }
 831
 832         data->isoc_altsetting = altsetting;
 833
 834         data->isoc_tx_ep = NULL;
 835         data->isoc_rx_ep = NULL;
 836
 837         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 838                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 839
 840                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 841                         data->isoc_tx_ep = ep_desc;
 842                         continue;
 843                 }
 844
 845                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 846                         data->isoc_rx_ep = ep_desc;
 847                         continue;
 848                 }
 849         }
 850
 851         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 852                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 853                 return -ENODEV;
 854         }
 855
 856         return 0;
 857 }
 858
 859 static void btusb_work(struct work_struct *work)
 860 {
 861         struct btusb_data *data = container_of(work, struct btusb_data, work);
 862         struct hci_dev *hdev = data->hdev;
 863         int new_alts;
 864         int err;
 865
 866         if (hdev->conn_hash.sco_num > 0) {
 867                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 868                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 869                         if (err < 0) {
 870                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 871                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 872                                 return;
 873                         }
 874
 875                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 876                 }
 877
 878                 if (hdev->voice_setting & 0x0020) {
 879                         static const int alts[3] = { 2, 4, 5 };
 880                         new_alts = alts[hdev->conn_hash.sco_num - 1];
 881                 } else {
 882                         new_alts = hdev->conn_hash.sco_num;
 883                 }
 884
 885                 if (data->isoc_altsetting != new_alts) {
 886                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 887                         usb_kill_anchored_urbs(&data->isoc_anchor);
 888
 889                         if (__set_isoc_interface(hdev, new_alts) < 0)
 890                                 return;
 891                 }
 892
 893                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 894                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 895                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 896                         else
 897                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 898                 }
 899         } else {
 900                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 901                 usb_kill_anchored_urbs(&data->isoc_anchor);
 902
 903                 __set_isoc_interface(hdev, 0);
 904                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 905                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 906         }
 907 }
 908
 909 static void btusb_waker(struct work_struct *work)
 910 {
 911         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 912         int err;
 913
 914         err = usb_autopm_get_interface(data->intf);
 915         if (err < 0)
 916                 return;
 917
 918         usb_autopm_put_interface(data->intf);
 919 }
 920
 921 static int btusb_probe(struct usb_interface *intf,
 922                                 const struct usb_device_id *id)
 923 {
 924         struct usb_endpoint_descriptor *ep_desc;
 925         struct btusb_data *data;
 926         struct hci_dev *hdev;
 927         int i, err;
 928
 929         BT_DBG("intf %p id %p", intf, id);
 930
 931         /* interface numbers are hardcoded in the spec */
 932         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 933                 return -ENODEV;
 934
 935         if (!id->driver_info) {
 936                 const struct usb_device_id *match;
 937                 match = usb_match_id(intf, blacklist_table);
 938                 if (match)
 939                         id = match;
 940         }
 941
 942         if (id->driver_info == BTUSB_IGNORE)
 943                 return -ENODEV;
 944
 945         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 946                 return -ENODEV;
 947
 948         if (ignore_csr && id->driver_info & BTUSB_CSR)
 949                 return -ENODEV;
 950
 951         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 952                 return -ENODEV;
 953
 954         if (id->driver_info & BTUSB_ATH3012) {
 955                 struct usb_device *udev = interface_to_usbdev(intf);
 956
 957                 /* Old firmware would otherwise let ath3k driver load
 958                  * patch and sysconfig files */
 959                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 960                         return -ENODEV;
 961         }
 962
 963         data = kzalloc(sizeof(*data), GFP_KERNEL);
 964         if (!data)
 965                 return -ENOMEM;
 966
 967         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 968                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 969
 970                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 971                         data->intr_ep = ep_desc;
 972                         continue;
 973                 }
 974
 975                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 976                         data->bulk_tx_ep = ep_desc;
 977                         continue;
 978                 }
 979
 980                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 981                         data->bulk_rx_ep = ep_desc;
 982                         continue;
 983                 }
 984         }
 985
 986         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 987                 kfree(data);
 988                 return -ENODEV;
 989         }
 990
 991         data->cmdreq_type = USB_TYPE_CLASS;
 992
 993         data->udev = interface_to_usbdev(intf);
 994         data->intf = intf;
 995
 996         spin_lock_init(&data->lock);
 997
 998         INIT_WORK(&data->work, btusb_work);
 999         INIT_WORK(&data->waker, btusb_waker);
1000         spin_lock_init(&data->txlock);
1001
1002         init_usb_anchor(&data->tx_anchor);
1003         init_usb_anchor(&data->intr_anchor);
1004         init_usb_anchor(&data->bulk_anchor);
1005         init_usb_anchor(&data->isoc_anchor);
1006         init_usb_anchor(&data->deferred);
1007
1008         hdev = hci_alloc_dev();
1009         if (!hdev) {
1010                 kfree(data);
1011                 return -ENOMEM;
1012         }
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_NO_RESET, &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_NO_RESET, &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_NO_RESET, &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                         kfree(data);
1081                         return err;
1082                 }
1083         }
1084
1085         err = hci_register_dev(hdev);
1086         if (err < 0) {
1087                 hci_free_dev(hdev);
1088                 kfree(data);
1089                 return err;
1090         }
1091
1092         usb_set_intfdata(intf, data);
1093
1094         return 0;
1095 }
1096
1097 static void btusb_disconnect(struct usb_interface *intf)
1098 {
1099         struct btusb_data *data = usb_get_intfdata(intf);
1100         struct hci_dev *hdev;
1101
1102         BT_DBG("intf %p", intf);
1103
1104         if (!data)
1105                 return;
1106
1107         hdev = data->hdev;
1108         usb_set_intfdata(data->intf, NULL);
1109
1110         if (data->isoc)
1111                 usb_set_intfdata(data->isoc, NULL);
1112
1113         hci_unregister_dev(hdev);
1114
1115         if (intf == data->isoc)
1116                 usb_driver_release_interface(&btusb_driver, data->intf);
1117         else if (data->isoc)
1118                 usb_driver_release_interface(&btusb_driver, data->isoc);
1119
1120         hci_free_dev(hdev);
1121         kfree(data);
1122 }
1123
1124 #ifdef CONFIG_PM
1125 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1126 {
1127         struct btusb_data *data = usb_get_intfdata(intf);
1128
1129         BT_DBG("intf %p", intf);
1130
1131         if (data->suspend_count++)
1132                 return 0;
1133
1134         spin_lock_irq(&data->txlock);
1135         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1136                 set_bit(BTUSB_SUSPENDING, &data->flags);
1137                 spin_unlock_irq(&data->txlock);
1138         } else {
1139                 spin_unlock_irq(&data->txlock);
1140                 data->suspend_count--;
1141                 return -EBUSY;
1142         }
1143
1144         cancel_work_sync(&data->work);
1145
1146         btusb_stop_traffic(data);
1147         usb_kill_anchored_urbs(&data->tx_anchor);
1148
1149         return 0;
1150 }
1151
1152 static void play_deferred(struct btusb_data *data)
1153 {
1154         struct urb *urb;
1155         int err;
1156
1157         while ((urb = usb_get_from_anchor(&data->deferred))) {
1158                 err = usb_submit_urb(urb, GFP_ATOMIC);
1159                 if (err < 0)
1160                         break;
1161
1162                 data->tx_in_flight++;
1163         }
1164         usb_scuttle_anchored_urbs(&data->deferred);
1165 }
1166
1167 static int btusb_resume(struct usb_interface *intf)
1168 {
1169         struct btusb_data *data = usb_get_intfdata(intf);
1170         struct hci_dev *hdev = data->hdev;
1171         int err = 0;
1172
1173         BT_DBG("intf %p", intf);
1174
1175         if (--data->suspend_count)
1176                 return 0;
1177
1178         if (!test_bit(HCI_RUNNING, &hdev->flags))
1179                 goto done;
1180
1181         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1182                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1183                 if (err < 0) {
1184                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1185                         goto failed;
1186                 }
1187         }
1188
1189         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1190                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1191                 if (err < 0) {
1192                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1193                         goto failed;
1194                 }
1195
1196                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1197         }
1198
1199         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1200                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1201                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1202                 else
1203                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1204         }
1205
1206         spin_lock_irq(&data->txlock);
1207         play_deferred(data);
1208         clear_bit(BTUSB_SUSPENDING, &data->flags);
1209         spin_unlock_irq(&data->txlock);
1210         schedule_work(&data->work);
1211
1212         return 0;
1213
1214 failed:
1215         usb_scuttle_anchored_urbs(&data->deferred);
1216 done:
1217         spin_lock_irq(&data->txlock);
1218         clear_bit(BTUSB_SUSPENDING, &data->flags);
1219         spin_unlock_irq(&data->txlock);
1220
1221         return err;
1222 }
1223 #endif
1224
1225 static struct usb_driver btusb_driver = {
1226         .name           = "btusb",
1227         .probe          = btusb_probe,
1228         .disconnect     = btusb_disconnect,
1229 #ifdef CONFIG_PM
1230         .suspend        = btusb_suspend,
1231         .resume         = btusb_resume,
1232 #endif
1233         .id_table       = btusb_table,
1234         .supports_autosuspend = 1,
1235         .disable_hub_initiated_lpm = 1,
1236 };
1237
1238 module_usb_driver(btusb_driver);
1239
1240 module_param(ignore_dga, bool, 0644);
1241 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1242
1243 module_param(ignore_csr, bool, 0644);
1244 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1245
1246 module_param(ignore_sniffer, bool, 0644);
1247 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1248
1249 module_param(disable_scofix, bool, 0644);
1250 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1251
1252 module_param(force_scofix, bool, 0644);
1253 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1254
1255 module_param(reset, bool, 0644);
1256 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1257
1258 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1259 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1260 MODULE_VERSION(VERSION);
1261 MODULE_LICENSE("GPL");