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(0x0489, 0xe042) },
 100         { USB_DEVICE(0x413c, 0x8197) },
 101
 102         /* Foxconn - Hon Hai */
 103         { USB_DEVICE(0x0489, 0xe033) },
 104
 105         /*Broadcom devices with vendor specific id */
 106         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
 107
 108         { }     /* Terminating entry */
 109 };
 110
 111 MODULE_DEVICE_TABLE(usb, btusb_table);
 112
 113 static struct usb_device_id blacklist_table[] = {
 114         /* CSR BlueCore devices */
 115         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 116
 117         /* Broadcom BCM2033 without firmware */
 118         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 119
 120         /* Atheros 3011 with sflash firmware */
 121         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 122         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 123         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 124         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 125         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 126
 127         /* Atheros AR9285 Malbec with sflash firmware */
 128         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 129
 130         /* Atheros 3012 with sflash firmware */
 131         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 132         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 133         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 134         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 135         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 136         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 137         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 138         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 139
 140         /* Atheros AR5BBU12 with sflash firmware */
 141         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 142
 143         /* Atheros AR5BBU12 with sflash firmware */
 144         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 145         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 146
 147         /* Broadcom BCM2035 */
 148         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 149         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 150         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 151
 152         /* Broadcom BCM2045 */
 153         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 154         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 155
 156         /* IBM/Lenovo ThinkPad with Broadcom chip */
 157         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 158         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 159
 160         /* HP laptop with Broadcom chip */
 161         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 162
 163         /* Dell laptop with Broadcom chip */
 164         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 165
 166         /* Dell Wireless 370 and 410 devices */
 167         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 168         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 169
 170         /* Belkin F8T012 and F8T013 devices */
 171         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 172         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 173
 174         /* Asus WL-BTD202 device */
 175         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 176
 177         /* Kensington Bluetooth USB adapter */
 178         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 179
 180         /* RTX Telecom based adapters with buggy SCO support */
 181         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 182         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 183
 184         /* CONWISE Technology based adapters with buggy SCO support */
 185         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 186
 187         /* Digianswer devices */
 188         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 189         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 190
 191         /* CSR BlueCore Bluetooth Sniffer */
 192         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 193
 194         /* Frontline ComProbe Bluetooth Sniffer */
 195         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 196
 197         { }     /* Terminating entry */
 198 };
 199
 200 #define BTUSB_MAX_ISOC_FRAMES   10
 201
 202 #define BTUSB_INTR_RUNNING      0
 203 #define BTUSB_BULK_RUNNING      1
 204 #define BTUSB_ISOC_RUNNING      2
 205 #define BTUSB_SUSPENDING        3
 206 #define BTUSB_DID_ISO_RESUME    4
 207
 208 struct btusb_data {
 209         struct hci_dev       *hdev;
 210         struct usb_device    *udev;
 211         struct usb_interface *intf;
 212         struct usb_interface *isoc;
 213
 214         spinlock_t lock;
 215
 216         unsigned long flags;
 217
 218         struct work_struct work;
 219         struct work_struct waker;
 220
 221         struct usb_anchor tx_anchor;
 222         struct usb_anchor intr_anchor;
 223         struct usb_anchor bulk_anchor;
 224         struct usb_anchor isoc_anchor;
 225         struct usb_anchor deferred;
 226         int tx_in_flight;
 227         spinlock_t txlock;
 228
 229         struct usb_endpoint_descriptor *intr_ep;
 230         struct usb_endpoint_descriptor *bulk_tx_ep;
 231         struct usb_endpoint_descriptor *bulk_rx_ep;
 232         struct usb_endpoint_descriptor *isoc_tx_ep;
 233         struct usb_endpoint_descriptor *isoc_rx_ep;
 234
 235         __u8 cmdreq_type;
 236
 237         unsigned int sco_num;
 238         int isoc_altsetting;
 239         int suspend_count;
 240 };
 241
 242 static int inc_tx(struct btusb_data *data)
 243 {
 244         unsigned long flags;
 245         int rv;
 246
 247         spin_lock_irqsave(&data->txlock, flags);
 248         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 249         if (!rv)
 250                 data->tx_in_flight++;
 251         spin_unlock_irqrestore(&data->txlock, flags);
 252
 253         return rv;
 254 }
 255
 256 static void btusb_intr_complete(struct urb *urb)
 257 {
 258         struct hci_dev *hdev = urb->context;
 259         struct btusb_data *data = hci_get_drvdata(hdev);
 260         int err;
 261
 262         BT_DBG("%s urb %p status %d count %d", hdev->name,
 263                                         urb, urb->status, urb->actual_length);
 264
 265         if (!test_bit(HCI_RUNNING, &hdev->flags))
 266                 return;
 267
 268         if (urb->status == 0) {
 269                 hdev->stat.byte_rx += urb->actual_length;
 270
 271                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 272                                                 urb->transfer_buffer,
 273                                                 urb->actual_length) < 0) {
 274                         BT_ERR("%s corrupted event packet", hdev->name);
 275                         hdev->stat.err_rx++;
 276                 }
 277         }
 278
 279         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 280                 return;
 281
 282         usb_mark_last_busy(data->udev);
 283         usb_anchor_urb(urb, &data->intr_anchor);
 284
 285         err = usb_submit_urb(urb, GFP_ATOMIC);
 286         if (err < 0) {
 287                 /* -EPERM: urb is being killed;
 288                  * -ENODEV: device got disconnected */
 289                 if (err != -EPERM && err != -ENODEV)
 290                         BT_ERR("%s urb %p failed to resubmit (%d)",
 291                                                 hdev->name, urb, -err);
 292                 usb_unanchor_urb(urb);
 293         }
 294 }
 295
 296 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 297 {
 298         struct btusb_data *data = hci_get_drvdata(hdev);
 299         struct urb *urb;
 300         unsigned char *buf;
 301         unsigned int pipe;
 302         int err, size;
 303
 304         BT_DBG("%s", hdev->name);
 305
 306         if (!data->intr_ep)
 307                 return -ENODEV;
 308
 309         urb = usb_alloc_urb(0, mem_flags);
 310         if (!urb)
 311                 return -ENOMEM;
 312
 313         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 314
 315         buf = kmalloc(size, mem_flags);
 316         if (!buf) {
 317                 usb_free_urb(urb);
 318                 return -ENOMEM;
 319         }
 320
 321         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 322
 323         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 324                                                 btusb_intr_complete, hdev,
 325                                                 data->intr_ep->bInterval);
 326
 327         urb->transfer_flags |= URB_FREE_BUFFER;
 328
 329         usb_anchor_urb(urb, &data->intr_anchor);
 330
 331         err = usb_submit_urb(urb, mem_flags);
 332         if (err < 0) {
 333                 if (err != -EPERM && err != -ENODEV)
 334                         BT_ERR("%s urb %p submission failed (%d)",
 335                                                 hdev->name, urb, -err);
 336                 usb_unanchor_urb(urb);
 337         }
 338
 339         usb_free_urb(urb);
 340
 341         return err;
 342 }
 343
 344 static void btusb_bulk_complete(struct urb *urb)
 345 {
 346         struct hci_dev *hdev = urb->context;
 347         struct btusb_data *data = hci_get_drvdata(hdev);
 348         int err;
 349
 350         BT_DBG("%s urb %p status %d count %d", hdev->name,
 351                                         urb, urb->status, urb->actual_length);
 352
 353         if (!test_bit(HCI_RUNNING, &hdev->flags))
 354                 return;
 355
 356         if (urb->status == 0) {
 357                 hdev->stat.byte_rx += urb->actual_length;
 358
 359                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 360                                                 urb->transfer_buffer,
 361                                                 urb->actual_length) < 0) {
 362                         BT_ERR("%s corrupted ACL packet", hdev->name);
 363                         hdev->stat.err_rx++;
 364                 }
 365         }
 366
 367         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 368                 return;
 369
 370         usb_anchor_urb(urb, &data->bulk_anchor);
 371         usb_mark_last_busy(data->udev);
 372
 373         err = usb_submit_urb(urb, GFP_ATOMIC);
 374         if (err < 0) {
 375                 /* -EPERM: urb is being killed;
 376                  * -ENODEV: device got disconnected */
 377                 if (err != -EPERM && err != -ENODEV)
 378                         BT_ERR("%s urb %p failed to resubmit (%d)",
 379                                                 hdev->name, urb, -err);
 380                 usb_unanchor_urb(urb);
 381         }
 382 }
 383
 384 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 385 {
 386         struct btusb_data *data = hci_get_drvdata(hdev);
 387         struct urb *urb;
 388         unsigned char *buf;
 389         unsigned int pipe;
 390         int err, size = HCI_MAX_FRAME_SIZE;
 391
 392         BT_DBG("%s", hdev->name);
 393
 394         if (!data->bulk_rx_ep)
 395                 return -ENODEV;
 396
 397         urb = usb_alloc_urb(0, mem_flags);
 398         if (!urb)
 399                 return -ENOMEM;
 400
 401         buf = kmalloc(size, mem_flags);
 402         if (!buf) {
 403                 usb_free_urb(urb);
 404                 return -ENOMEM;
 405         }
 406
 407         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 408
 409         usb_fill_bulk_urb(urb, data->udev, pipe,
 410                                         buf, size, btusb_bulk_complete, hdev);
 411
 412         urb->transfer_flags |= URB_FREE_BUFFER;
 413
 414         usb_mark_last_busy(data->udev);
 415         usb_anchor_urb(urb, &data->bulk_anchor);
 416
 417         err = usb_submit_urb(urb, mem_flags);
 418         if (err < 0) {
 419                 if (err != -EPERM && err != -ENODEV)
 420                         BT_ERR("%s urb %p submission failed (%d)",
 421                                                 hdev->name, urb, -err);
 422                 usb_unanchor_urb(urb);
 423         }
 424
 425         usb_free_urb(urb);
 426
 427         return err;
 428 }
 429
 430 static void btusb_isoc_complete(struct urb *urb)
 431 {
 432         struct hci_dev *hdev = urb->context;
 433         struct btusb_data *data = hci_get_drvdata(hdev);
 434         int i, err;
 435
 436         BT_DBG("%s urb %p status %d count %d", hdev->name,
 437                                         urb, urb->status, urb->actual_length);
 438
 439         if (!test_bit(HCI_RUNNING, &hdev->flags))
 440                 return;
 441
 442         if (urb->status == 0) {
 443                 for (i = 0; i < urb->number_of_packets; i++) {
 444                         unsigned int offset = urb->iso_frame_desc[i].offset;
 445                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 446
 447                         if (urb->iso_frame_desc[i].status)
 448                                 continue;
 449
 450                         hdev->stat.byte_rx += length;
 451
 452                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 453                                                 urb->transfer_buffer + offset,
 454                                                                 length) < 0) {
 455                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 456                                 hdev->stat.err_rx++;
 457                         }
 458                 }
 459         }
 460
 461         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 462                 return;
 463
 464         usb_anchor_urb(urb, &data->isoc_anchor);
 465
 466         err = usb_submit_urb(urb, GFP_ATOMIC);
 467         if (err < 0) {
 468                 /* -EPERM: urb is being killed;
 469                  * -ENODEV: device got disconnected */
 470                 if (err != -EPERM && err != -ENODEV)
 471                         BT_ERR("%s urb %p failed to resubmit (%d)",
 472                                                 hdev->name, urb, -err);
 473                 usb_unanchor_urb(urb);
 474         }
 475 }
 476
 477 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 478 {
 479         int i, offset = 0;
 480
 481         BT_DBG("len %d mtu %d", len, mtu);
 482
 483         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 484                                         i++, offset += mtu, len -= mtu) {
 485                 urb->iso_frame_desc[i].offset = offset;
 486                 urb->iso_frame_desc[i].length = mtu;
 487         }
 488
 489         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 490                 urb->iso_frame_desc[i].offset = offset;
 491                 urb->iso_frame_desc[i].length = len;
 492                 i++;
 493         }
 494
 495         urb->number_of_packets = i;
 496 }
 497
 498 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 499 {
 500         struct btusb_data *data = hci_get_drvdata(hdev);
 501         struct urb *urb;
 502         unsigned char *buf;
 503         unsigned int pipe;
 504         int err, size;
 505
 506         BT_DBG("%s", hdev->name);
 507
 508         if (!data->isoc_rx_ep)
 509                 return -ENODEV;
 510
 511         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 512         if (!urb)
 513                 return -ENOMEM;
 514
 515         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 516                                                 BTUSB_MAX_ISOC_FRAMES;
 517
 518         buf = kmalloc(size, mem_flags);
 519         if (!buf) {
 520                 usb_free_urb(urb);
 521                 return -ENOMEM;
 522         }
 523
 524         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 525
 526         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 527                                 hdev, data->isoc_rx_ep->bInterval);
 528
 529         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 530
 531         __fill_isoc_descriptor(urb, size,
 532                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 533
 534         usb_anchor_urb(urb, &data->isoc_anchor);
 535
 536         err = usb_submit_urb(urb, mem_flags);
 537         if (err < 0) {
 538                 if (err != -EPERM && err != -ENODEV)
 539                         BT_ERR("%s urb %p submission failed (%d)",
 540                                                 hdev->name, urb, -err);
 541                 usb_unanchor_urb(urb);
 542         }
 543
 544         usb_free_urb(urb);
 545
 546         return err;
 547 }
 548
 549 static void btusb_tx_complete(struct urb *urb)
 550 {
 551         struct sk_buff *skb = urb->context;
 552         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 553         struct btusb_data *data = hci_get_drvdata(hdev);
 554
 555         BT_DBG("%s urb %p status %d count %d", hdev->name,
 556                                         urb, urb->status, urb->actual_length);
 557
 558         if (!test_bit(HCI_RUNNING, &hdev->flags))
 559                 goto done;
 560
 561         if (!urb->status)
 562                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 563         else
 564                 hdev->stat.err_tx++;
 565
 566 done:
 567         spin_lock(&data->txlock);
 568         data->tx_in_flight--;
 569         spin_unlock(&data->txlock);
 570
 571         kfree(urb->setup_packet);
 572
 573         kfree_skb(skb);
 574 }
 575
 576 static void btusb_isoc_tx_complete(struct urb *urb)
 577 {
 578         struct sk_buff *skb = urb->context;
 579         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 580
 581         BT_DBG("%s urb %p status %d count %d", hdev->name,
 582                                         urb, urb->status, urb->actual_length);
 583
 584         if (!test_bit(HCI_RUNNING, &hdev->flags))
 585                 goto done;
 586
 587         if (!urb->status)
 588                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 589         else
 590                 hdev->stat.err_tx++;
 591
 592 done:
 593         kfree(urb->setup_packet);
 594
 595         kfree_skb(skb);
 596 }
 597
 598 static int btusb_open(struct hci_dev *hdev)
 599 {
 600         struct btusb_data *data = hci_get_drvdata(hdev);
 601         int err;
 602
 603         BT_DBG("%s", hdev->name);
 604
 605         err = usb_autopm_get_interface(data->intf);
 606         if (err < 0)
 607                 return err;
 608
 609         data->intf->needs_remote_wakeup = 1;
 610
 611         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 612                 goto done;
 613
 614         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 615                 goto done;
 616
 617         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 618         if (err < 0)
 619                 goto failed;
 620
 621         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 622         if (err < 0) {
 623                 usb_kill_anchored_urbs(&data->intr_anchor);
 624                 goto failed;
 625         }
 626
 627         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 628         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 629
 630 done:
 631         usb_autopm_put_interface(data->intf);
 632         return 0;
 633
 634 failed:
 635         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 636         clear_bit(HCI_RUNNING, &hdev->flags);
 637         usb_autopm_put_interface(data->intf);
 638         return err;
 639 }
 640
 641 static void btusb_stop_traffic(struct btusb_data *data)
 642 {
 643         usb_kill_anchored_urbs(&data->intr_anchor);
 644         usb_kill_anchored_urbs(&data->bulk_anchor);
 645         usb_kill_anchored_urbs(&data->isoc_anchor);
 646 }
 647
 648 static int btusb_close(struct hci_dev *hdev)
 649 {
 650         struct btusb_data *data = hci_get_drvdata(hdev);
 651         int err;
 652
 653         BT_DBG("%s", hdev->name);
 654
 655         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 656                 return 0;
 657
 658         cancel_work_sync(&data->work);
 659         cancel_work_sync(&data->waker);
 660
 661         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 662         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 663         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 664
 665         btusb_stop_traffic(data);
 666         err = usb_autopm_get_interface(data->intf);
 667         if (err < 0)
 668                 goto failed;
 669
 670         data->intf->needs_remote_wakeup = 0;
 671         usb_autopm_put_interface(data->intf);
 672
 673 failed:
 674         usb_scuttle_anchored_urbs(&data->deferred);
 675         return 0;
 676 }
 677
 678 static int btusb_flush(struct hci_dev *hdev)
 679 {
 680         struct btusb_data *data = hci_get_drvdata(hdev);
 681
 682         BT_DBG("%s", hdev->name);
 683
 684         usb_kill_anchored_urbs(&data->tx_anchor);
 685
 686         return 0;
 687 }
 688
 689 static int btusb_send_frame(struct sk_buff *skb)
 690 {
 691         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 692         struct btusb_data *data = hci_get_drvdata(hdev);
 693         struct usb_ctrlrequest *dr;
 694         struct urb *urb;
 695         unsigned int pipe;
 696         int err;
 697
 698         BT_DBG("%s", hdev->name);
 699
 700         if (!test_bit(HCI_RUNNING, &hdev->flags))
 701                 return -EBUSY;
 702
 703         switch (bt_cb(skb)->pkt_type) {
 704         case HCI_COMMAND_PKT:
 705                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 706                 if (!urb)
 707                         return -ENOMEM;
 708
 709                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 710                 if (!dr) {
 711                         usb_free_urb(urb);
 712                         return -ENOMEM;
 713                 }
 714
 715                 dr->bRequestType = data->cmdreq_type;
 716                 dr->bRequest     = 0;
 717                 dr->wIndex       = 0;
 718                 dr->wValue       = 0;
 719                 dr->wLength      = __cpu_to_le16(skb->len);
 720
 721                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 722
 723                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 724                                 skb->data, skb->len, btusb_tx_complete, skb);
 725
 726                 hdev->stat.cmd_tx++;
 727                 break;
 728
 729         case HCI_ACLDATA_PKT:
 730                 if (!data->bulk_tx_ep)
 731                         return -ENODEV;
 732
 733                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 734                 if (!urb)
 735                         return -ENOMEM;
 736
 737                 pipe = usb_sndbulkpipe(data->udev,
 738                                         data->bulk_tx_ep->bEndpointAddress);
 739
 740                 usb_fill_bulk_urb(urb, data->udev, pipe,
 741                                 skb->data, skb->len, btusb_tx_complete, skb);
 742
 743                 hdev->stat.acl_tx++;
 744                 break;
 745
 746         case HCI_SCODATA_PKT:
 747                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 748                         return -ENODEV;
 749
 750                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 751                 if (!urb)
 752                         return -ENOMEM;
 753
 754                 pipe = usb_sndisocpipe(data->udev,
 755                                         data->isoc_tx_ep->bEndpointAddress);
 756
 757                 usb_fill_int_urb(urb, data->udev, pipe,
 758                                 skb->data, skb->len, btusb_isoc_tx_complete,
 759                                 skb, data->isoc_tx_ep->bInterval);
 760
 761                 urb->transfer_flags  = URB_ISO_ASAP;
 762
 763                 __fill_isoc_descriptor(urb, skb->len,
 764                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 765
 766                 hdev->stat.sco_tx++;
 767                 goto skip_waking;
 768
 769         default:
 770                 return -EILSEQ;
 771         }
 772
 773         err = inc_tx(data);
 774         if (err) {
 775                 usb_anchor_urb(urb, &data->deferred);
 776                 schedule_work(&data->waker);
 777                 err = 0;
 778                 goto done;
 779         }
 780
 781 skip_waking:
 782         usb_anchor_urb(urb, &data->tx_anchor);
 783
 784         err = usb_submit_urb(urb, GFP_ATOMIC);
 785         if (err < 0) {
 786                 if (err != -EPERM && err != -ENODEV)
 787                         BT_ERR("%s urb %p submission failed (%d)",
 788                                                 hdev->name, urb, -err);
 789                 kfree(urb->setup_packet);
 790                 usb_unanchor_urb(urb);
 791         } else {
 792                 usb_mark_last_busy(data->udev);
 793         }
 794
 795 done:
 796         usb_free_urb(urb);
 797         return err;
 798 }
 799
 800 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 801 {
 802         struct btusb_data *data = hci_get_drvdata(hdev);
 803
 804         BT_DBG("%s evt %d", hdev->name, evt);
 805
 806         if (hdev->conn_hash.sco_num != data->sco_num) {
 807                 data->sco_num = hdev->conn_hash.sco_num;
 808                 schedule_work(&data->work);
 809         }
 810 }
 811
 812 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 813 {
 814         struct btusb_data *data = hci_get_drvdata(hdev);
 815         struct usb_interface *intf = data->isoc;
 816         struct usb_endpoint_descriptor *ep_desc;
 817         int i, err;
 818
 819         if (!data->isoc)
 820                 return -ENODEV;
 821
 822         err = usb_set_interface(data->udev, 1, altsetting);
 823         if (err < 0) {
 824                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 825                 return err;
 826         }
 827
 828         data->isoc_altsetting = altsetting;
 829
 830         data->isoc_tx_ep = NULL;
 831         data->isoc_rx_ep = NULL;
 832
 833         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 834                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 835
 836                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 837                         data->isoc_tx_ep = ep_desc;
 838                         continue;
 839                 }
 840
 841                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 842                         data->isoc_rx_ep = ep_desc;
 843                         continue;
 844                 }
 845         }
 846
 847         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 848                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 849                 return -ENODEV;
 850         }
 851
 852         return 0;
 853 }
 854
 855 static void btusb_work(struct work_struct *work)
 856 {
 857         struct btusb_data *data = container_of(work, struct btusb_data, work);
 858         struct hci_dev *hdev = data->hdev;
 859         int new_alts;
 860         int err;
 861
 862         if (hdev->conn_hash.sco_num > 0) {
 863                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 864                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 865                         if (err < 0) {
 866                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 867                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 868                                 return;
 869                         }
 870
 871                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 872                 }
 873
 874                 if (hdev->voice_setting & 0x0020) {
 875                         static const int alts[3] = { 2, 4, 5 };
 876                         new_alts = alts[hdev->conn_hash.sco_num - 1];
 877                 } else {
 878                         new_alts = hdev->conn_hash.sco_num;
 879                 }
 880
 881                 if (data->isoc_altsetting != new_alts) {
 882                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 883                         usb_kill_anchored_urbs(&data->isoc_anchor);
 884
 885                         if (__set_isoc_interface(hdev, new_alts) < 0)
 886                                 return;
 887                 }
 888
 889                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 890                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 891                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 892                         else
 893                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 894                 }
 895         } else {
 896                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 897                 usb_kill_anchored_urbs(&data->isoc_anchor);
 898
 899                 __set_isoc_interface(hdev, 0);
 900                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 901                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 902         }
 903 }
 904
 905 static void btusb_waker(struct work_struct *work)
 906 {
 907         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 908         int err;
 909
 910         err = usb_autopm_get_interface(data->intf);
 911         if (err < 0)
 912                 return;
 913
 914         usb_autopm_put_interface(data->intf);
 915 }
 916
 917 static int btusb_probe(struct usb_interface *intf,
 918                                 const struct usb_device_id *id)
 919 {
 920         struct usb_endpoint_descriptor *ep_desc;
 921         struct btusb_data *data;
 922         struct hci_dev *hdev;
 923         int i, err;
 924
 925         BT_DBG("intf %p id %p", intf, id);
 926
 927         /* interface numbers are hardcoded in the spec */
 928         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 929                 return -ENODEV;
 930
 931         if (!id->driver_info) {
 932                 const struct usb_device_id *match;
 933                 match = usb_match_id(intf, blacklist_table);
 934                 if (match)
 935                         id = match;
 936         }
 937
 938         if (id->driver_info == BTUSB_IGNORE)
 939                 return -ENODEV;
 940
 941         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 942                 return -ENODEV;
 943
 944         if (ignore_csr && id->driver_info & BTUSB_CSR)
 945                 return -ENODEV;
 946
 947         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 948                 return -ENODEV;
 949
 950         if (id->driver_info & BTUSB_ATH3012) {
 951                 struct usb_device *udev = interface_to_usbdev(intf);
 952
 953                 /* Old firmware would otherwise let ath3k driver load
 954                  * patch and sysconfig files */
 955                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 956                         return -ENODEV;
 957         }
 958
 959         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
 960         if (!data)
 961                 return -ENOMEM;
 962
 963         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 964                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 965
 966                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 967                         data->intr_ep = ep_desc;
 968                         continue;
 969                 }
 970
 971                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 972                         data->bulk_tx_ep = ep_desc;
 973                         continue;
 974                 }
 975
 976                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 977                         data->bulk_rx_ep = ep_desc;
 978                         continue;
 979                 }
 980         }
 981
 982         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
 983                 return -ENODEV;
 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                 return -ENOMEM;
1005
1006         hdev->bus = HCI_USB;
1007         hci_set_drvdata(hdev, data);
1008
1009         data->hdev = hdev;
1010
1011         SET_HCIDEV_DEV(hdev, &intf->dev);
1012
1013         hdev->open     = btusb_open;
1014         hdev->close    = btusb_close;
1015         hdev->flush    = btusb_flush;
1016         hdev->send     = btusb_send_frame;
1017         hdev->notify   = btusb_notify;
1018
1019         /* Interface numbers are hardcoded in the specification */
1020         data->isoc = usb_ifnum_to_if(data->udev, 1);
1021
1022         if (!reset)
1023                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1024
1025         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1026                 if (!disable_scofix)
1027                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1028         }
1029
1030         if (id->driver_info & BTUSB_BROKEN_ISOC)
1031                 data->isoc = NULL;
1032
1033         if (id->driver_info & BTUSB_DIGIANSWER) {
1034                 data->cmdreq_type = USB_TYPE_VENDOR;
1035                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1036         }
1037
1038         if (id->driver_info & BTUSB_CSR) {
1039                 struct usb_device *udev = data->udev;
1040
1041                 /* Old firmware would otherwise execute USB reset */
1042                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1043                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1044         }
1045
1046         if (id->driver_info & BTUSB_SNIFFER) {
1047                 struct usb_device *udev = data->udev;
1048
1049                 /* New sniffer firmware has crippled HCI interface */
1050                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1051                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1052
1053                 data->isoc = NULL;
1054         }
1055
1056         if (id->driver_info & BTUSB_BCM92035) {
1057                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1058                 struct sk_buff *skb;
1059
1060                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1061                 if (skb) {
1062                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1063                         skb_queue_tail(&hdev->driver_init, skb);
1064                 }
1065         }
1066
1067         if (data->isoc) {
1068                 err = usb_driver_claim_interface(&btusb_driver,
1069                                                         data->isoc, data);
1070                 if (err < 0) {
1071                         hci_free_dev(hdev);
1072                         return err;
1073                 }
1074         }
1075
1076         err = hci_register_dev(hdev);
1077         if (err < 0) {
1078                 hci_free_dev(hdev);
1079                 return err;
1080         }
1081
1082         usb_set_intfdata(intf, data);
1083
1084         return 0;
1085 }
1086
1087 static void btusb_disconnect(struct usb_interface *intf)
1088 {
1089         struct btusb_data *data = usb_get_intfdata(intf);
1090         struct hci_dev *hdev;
1091
1092         BT_DBG("intf %p", intf);
1093
1094         if (!data)
1095                 return;
1096
1097         hdev = data->hdev;
1098         usb_set_intfdata(data->intf, NULL);
1099
1100         if (data->isoc)
1101                 usb_set_intfdata(data->isoc, NULL);
1102
1103         hci_unregister_dev(hdev);
1104
1105         if (intf == data->isoc)
1106                 usb_driver_release_interface(&btusb_driver, data->intf);
1107         else if (data->isoc)
1108                 usb_driver_release_interface(&btusb_driver, data->isoc);
1109
1110         hci_free_dev(hdev);
1111 }
1112
1113 #ifdef CONFIG_PM
1114 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1115 {
1116         struct btusb_data *data = usb_get_intfdata(intf);
1117
1118         BT_DBG("intf %p", intf);
1119
1120         if (data->suspend_count++)
1121                 return 0;
1122
1123         spin_lock_irq(&data->txlock);
1124         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1125                 set_bit(BTUSB_SUSPENDING, &data->flags);
1126                 spin_unlock_irq(&data->txlock);
1127         } else {
1128                 spin_unlock_irq(&data->txlock);
1129                 data->suspend_count--;
1130                 return -EBUSY;
1131         }
1132
1133         cancel_work_sync(&data->work);
1134
1135         btusb_stop_traffic(data);
1136         usb_kill_anchored_urbs(&data->tx_anchor);
1137
1138         return 0;
1139 }
1140
1141 static void play_deferred(struct btusb_data *data)
1142 {
1143         struct urb *urb;
1144         int err;
1145
1146         while ((urb = usb_get_from_anchor(&data->deferred))) {
1147                 err = usb_submit_urb(urb, GFP_ATOMIC);
1148                 if (err < 0)
1149                         break;
1150
1151                 data->tx_in_flight++;
1152         }
1153         usb_scuttle_anchored_urbs(&data->deferred);
1154 }
1155
1156 static int btusb_resume(struct usb_interface *intf)
1157 {
1158         struct btusb_data *data = usb_get_intfdata(intf);
1159         struct hci_dev *hdev = data->hdev;
1160         int err = 0;
1161
1162         BT_DBG("intf %p", intf);
1163
1164         if (--data->suspend_count)
1165                 return 0;
1166
1167         if (!test_bit(HCI_RUNNING, &hdev->flags))
1168                 goto done;
1169
1170         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1171                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1172                 if (err < 0) {
1173                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1174                         goto failed;
1175                 }
1176         }
1177
1178         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1179                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1180                 if (err < 0) {
1181                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1182                         goto failed;
1183                 }
1184
1185                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1186         }
1187
1188         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1189                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1190                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1191                 else
1192                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1193         }
1194
1195         spin_lock_irq(&data->txlock);
1196         play_deferred(data);
1197         clear_bit(BTUSB_SUSPENDING, &data->flags);
1198         spin_unlock_irq(&data->txlock);
1199         schedule_work(&data->work);
1200
1201         return 0;
1202
1203 failed:
1204         usb_scuttle_anchored_urbs(&data->deferred);
1205 done:
1206         spin_lock_irq(&data->txlock);
1207         clear_bit(BTUSB_SUSPENDING, &data->flags);
1208         spin_unlock_irq(&data->txlock);
1209
1210         return err;
1211 }
1212 #endif
1213
1214 static struct usb_driver btusb_driver = {
1215         .name           = "btusb",
1216         .probe          = btusb_probe,
1217         .disconnect     = btusb_disconnect,
1218 #ifdef CONFIG_PM
1219         .suspend        = btusb_suspend,
1220         .resume         = btusb_resume,
1221 #endif
1222         .id_table       = btusb_table,
1223         .supports_autosuspend = 1,
1224         .disable_hub_initiated_lpm = 1,
1225 };
1226
1227 module_usb_driver(btusb_driver);
1228
1229 module_param(ignore_dga, bool, 0644);
1230 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1231
1232 module_param(ignore_csr, bool, 0644);
1233 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1234
1235 module_param(ignore_sniffer, bool, 0644);
1236 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1237
1238 module_param(disable_scofix, bool, 0644);
1239 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1240
1241 module_param(force_scofix, bool, 0644);
1242 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1243
1244 module_param(reset, bool, 0644);
1245 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1246
1247 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1248 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1249 MODULE_VERSION(VERSION);
1250 MODULE_LICENSE("GPL");