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 int ignore_dga;
  41 static int ignore_csr;
  42 static int ignore_sniffer;
  43 static int disable_scofix;
  44 static int force_scofix;
  45
  46 static int 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         /* Apple-specific (Broadcom) devices */
  64         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  65
  66         /* MediaTek MT76x0E */
  67         { USB_DEVICE(0x0e8d, 0x763f) },
  68
  69         /* Broadcom SoftSailing reporting vendor specific */
  70         { USB_DEVICE(0x0a5c, 0x21e1) },
  71
  72         /* Apple MacBookPro 7,1 */
  73         { USB_DEVICE(0x05ac, 0x8213) },
  74
  75         /* Apple iMac11,1 */
  76         { USB_DEVICE(0x05ac, 0x8215) },
  77
  78         /* Apple MacBookPro6,2 */
  79         { USB_DEVICE(0x05ac, 0x8218) },
  80
  81         /* Apple MacBookAir3,1, MacBookAir3,2 */
  82         { USB_DEVICE(0x05ac, 0x821b) },
  83
  84         /* Apple MacBookAir4,1 */
  85         { USB_DEVICE(0x05ac, 0x821f) },
  86
  87         /* Apple MacBookPro8,2 */
  88         { USB_DEVICE(0x05ac, 0x821a) },
  89
  90         /* Apple MacMini5,1 */
  91         { USB_DEVICE(0x05ac, 0x8281) },
  92
  93         /* AVM BlueFRITZ! USB v2.0 */
  94         { USB_DEVICE(0x057c, 0x3800) },
  95
  96         /* Bluetooth Ultraport Module from IBM */
  97         { USB_DEVICE(0x04bf, 0x030a) },
  98
  99         /* ALPS Modules with non-standard id */
 100         { USB_DEVICE(0x044e, 0x3001) },
 101         { USB_DEVICE(0x044e, 0x3002) },
 102
 103         /* Ericsson with non-standard id */
 104         { USB_DEVICE(0x0bdb, 0x1002) },
 105
 106         /* Canyon CN-BTU1 with HID interfaces */
 107         { USB_DEVICE(0x0c10, 0x0000) },
 108
 109         /* Broadcom BCM20702A0 */
 110         { USB_DEVICE(0x0b05, 0x17b5) },
 111         { USB_DEVICE(0x0b05, 0x17cb) },
 112         { USB_DEVICE(0x04ca, 0x2003) },
 113         { USB_DEVICE(0x0489, 0xe042) },
 114         { USB_DEVICE(0x413c, 0x8197) },
 115
 116         /* Foxconn - Hon Hai */
 117         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 118
 119         /*Broadcom devices with vendor specific id */
 120         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
 121
 122         { }     /* Terminating entry */
 123 };
 124
 125 MODULE_DEVICE_TABLE(usb, btusb_table);
 126
 127 static struct usb_device_id blacklist_table[] = {
 128         /* CSR BlueCore devices */
 129         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 130
 131         /* Broadcom BCM2033 without firmware */
 132         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 133
 134         /* Atheros 3011 with sflash firmware */
 135         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 136         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 137         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 138         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 139         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 140         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 141
 142         /* Atheros AR9285 Malbec with sflash firmware */
 143         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 144
 145         /* Atheros 3012 with sflash firmware */
 146         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 147         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 169
 170         /* Atheros AR5BBU12 with sflash firmware */
 171         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 172
 173         /* Atheros AR5BBU12 with sflash firmware */
 174         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 176
 177         /* Broadcom BCM2035 */
 178         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 179         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 180         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 181
 182         /* Broadcom BCM2045 */
 183         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 184         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 185
 186         /* IBM/Lenovo ThinkPad with Broadcom chip */
 187         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 188         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 189
 190         /* HP laptop with Broadcom chip */
 191         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 192
 193         /* Dell laptop with Broadcom chip */
 194         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 195
 196         /* Dell Wireless 370 and 410 devices */
 197         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 198         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 199
 200         /* Belkin F8T012 and F8T013 devices */
 201         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 202         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 203
 204         /* Asus WL-BTD202 device */
 205         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 206
 207         /* Kensington Bluetooth USB adapter */
 208         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 209
 210         /* RTX Telecom based adapters with buggy SCO support */
 211         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 212         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 213
 214         /* CONWISE Technology based adapters with buggy SCO support */
 215         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 216
 217         /* Digianswer devices */
 218         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 219         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 220
 221         /* CSR BlueCore Bluetooth Sniffer */
 222         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 223
 224         /* Frontline ComProbe Bluetooth Sniffer */
 225         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 226
 227         { }     /* Terminating entry */
 228 };
 229
 230 #define BTUSB_MAX_ISOC_FRAMES   10
 231
 232 #define BTUSB_INTR_RUNNING      0
 233 #define BTUSB_BULK_RUNNING      1
 234 #define BTUSB_ISOC_RUNNING      2
 235 #define BTUSB_SUSPENDING        3
 236 #define BTUSB_DID_ISO_RESUME    4
 237
 238 struct btusb_data {
 239         struct hci_dev       *hdev;
 240         struct usb_device    *udev;
 241         struct usb_interface *intf;
 242         struct usb_interface *isoc;
 243
 244         spinlock_t lock;
 245
 246         unsigned long flags;
 247
 248         struct work_struct work;
 249         struct work_struct waker;
 250
 251         struct usb_anchor tx_anchor;
 252         struct usb_anchor intr_anchor;
 253         struct usb_anchor bulk_anchor;
 254         struct usb_anchor isoc_anchor;
 255         struct usb_anchor deferred;
 256         int tx_in_flight;
 257         spinlock_t txlock;
 258
 259         struct usb_endpoint_descriptor *intr_ep;
 260         struct usb_endpoint_descriptor *bulk_tx_ep;
 261         struct usb_endpoint_descriptor *bulk_rx_ep;
 262         struct usb_endpoint_descriptor *isoc_tx_ep;
 263         struct usb_endpoint_descriptor *isoc_rx_ep;
 264
 265         __u8 cmdreq_type;
 266
 267         unsigned int sco_num;
 268         int isoc_altsetting;
 269         int suspend_count;
 270 };
 271
 272 static int inc_tx(struct btusb_data *data)
 273 {
 274         unsigned long flags;
 275         int rv;
 276
 277         spin_lock_irqsave(&data->txlock, flags);
 278         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 279         if (!rv)
 280                 data->tx_in_flight++;
 281         spin_unlock_irqrestore(&data->txlock, flags);
 282
 283         return rv;
 284 }
 285
 286 static void btusb_intr_complete(struct urb *urb)
 287 {
 288         struct hci_dev *hdev = urb->context;
 289         struct btusb_data *data = hdev->driver_data;
 290         int err;
 291
 292         BT_DBG("%s urb %p status %d count %d", hdev->name,
 293                                         urb, urb->status, urb->actual_length);
 294
 295         if (!test_bit(HCI_RUNNING, &hdev->flags))
 296                 return;
 297
 298         if (urb->status == 0) {
 299                 hdev->stat.byte_rx += urb->actual_length;
 300
 301                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 302                                                 urb->transfer_buffer,
 303                                                 urb->actual_length) < 0) {
 304                         BT_ERR("%s corrupted event packet", hdev->name);
 305                         hdev->stat.err_rx++;
 306                 }
 307         }
 308
 309         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 310                 return;
 311
 312         usb_mark_last_busy(data->udev);
 313         usb_anchor_urb(urb, &data->intr_anchor);
 314
 315         err = usb_submit_urb(urb, GFP_ATOMIC);
 316         if (err < 0) {
 317                 /* -EPERM: urb is being killed;
 318                  * -ENODEV: device got disconnected */
 319                 if (err != -EPERM && err != -ENODEV)
 320                         BT_ERR("%s urb %p failed to resubmit (%d)",
 321                                                 hdev->name, urb, -err);
 322                 usb_unanchor_urb(urb);
 323         }
 324 }
 325
 326 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 327 {
 328         struct btusb_data *data = hdev->driver_data;
 329         struct urb *urb;
 330         unsigned char *buf;
 331         unsigned int pipe;
 332         int err, size;
 333
 334         BT_DBG("%s", hdev->name);
 335
 336         if (!data->intr_ep)
 337                 return -ENODEV;
 338
 339         urb = usb_alloc_urb(0, mem_flags);
 340         if (!urb)
 341                 return -ENOMEM;
 342
 343         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 344
 345         buf = kmalloc(size, mem_flags);
 346         if (!buf) {
 347                 usb_free_urb(urb);
 348                 return -ENOMEM;
 349         }
 350
 351         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 352
 353         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 354                                                 btusb_intr_complete, hdev,
 355                                                 data->intr_ep->bInterval);
 356
 357         urb->transfer_flags |= URB_FREE_BUFFER;
 358
 359         usb_anchor_urb(urb, &data->intr_anchor);
 360
 361         err = usb_submit_urb(urb, mem_flags);
 362         if (err < 0) {
 363                 BT_ERR("%s urb %p submission failed (%d)",
 364                                                 hdev->name, urb, -err);
 365                 usb_unanchor_urb(urb);
 366         }
 367
 368         usb_free_urb(urb);
 369
 370         return err;
 371 }
 372
 373 static void btusb_bulk_complete(struct urb *urb)
 374 {
 375         struct hci_dev *hdev = urb->context;
 376         struct btusb_data *data = hdev->driver_data;
 377         int err;
 378
 379         BT_DBG("%s urb %p status %d count %d", hdev->name,
 380                                         urb, urb->status, urb->actual_length);
 381
 382         if (!test_bit(HCI_RUNNING, &hdev->flags))
 383                 return;
 384
 385         if (urb->status == 0) {
 386                 hdev->stat.byte_rx += urb->actual_length;
 387
 388                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 389                                                 urb->transfer_buffer,
 390                                                 urb->actual_length) < 0) {
 391                         BT_ERR("%s corrupted ACL packet", hdev->name);
 392                         hdev->stat.err_rx++;
 393                 }
 394         }
 395
 396         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 397                 return;
 398
 399         usb_anchor_urb(urb, &data->bulk_anchor);
 400         usb_mark_last_busy(data->udev);
 401
 402         err = usb_submit_urb(urb, GFP_ATOMIC);
 403         if (err < 0) {
 404                 /* -EPERM: urb is being killed;
 405                  * -ENODEV: device got disconnected */
 406                 if (err != -EPERM && err != -ENODEV)
 407                         BT_ERR("%s urb %p failed to resubmit (%d)",
 408                                                 hdev->name, urb, -err);
 409                 usb_unanchor_urb(urb);
 410         }
 411 }
 412
 413 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 414 {
 415         struct btusb_data *data = hdev->driver_data;
 416         struct urb *urb;
 417         unsigned char *buf;
 418         unsigned int pipe;
 419         int err, size = HCI_MAX_FRAME_SIZE;
 420
 421         BT_DBG("%s", hdev->name);
 422
 423         if (!data->bulk_rx_ep)
 424                 return -ENODEV;
 425
 426         urb = usb_alloc_urb(0, mem_flags);
 427         if (!urb)
 428                 return -ENOMEM;
 429
 430         buf = kmalloc(size, mem_flags);
 431         if (!buf) {
 432                 usb_free_urb(urb);
 433                 return -ENOMEM;
 434         }
 435
 436         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 437
 438         usb_fill_bulk_urb(urb, data->udev, pipe,
 439                                         buf, size, btusb_bulk_complete, hdev);
 440
 441         urb->transfer_flags |= URB_FREE_BUFFER;
 442
 443         usb_mark_last_busy(data->udev);
 444         usb_anchor_urb(urb, &data->bulk_anchor);
 445
 446         err = usb_submit_urb(urb, mem_flags);
 447         if (err < 0) {
 448                 BT_ERR("%s urb %p submission failed (%d)",
 449                                                 hdev->name, urb, -err);
 450                 usb_unanchor_urb(urb);
 451         }
 452
 453         usb_free_urb(urb);
 454
 455         return err;
 456 }
 457
 458 static void btusb_isoc_complete(struct urb *urb)
 459 {
 460         struct hci_dev *hdev = urb->context;
 461         struct btusb_data *data = hdev->driver_data;
 462         int i, err;
 463
 464         BT_DBG("%s urb %p status %d count %d", hdev->name,
 465                                         urb, urb->status, urb->actual_length);
 466
 467         if (!test_bit(HCI_RUNNING, &hdev->flags))
 468                 return;
 469
 470         if (urb->status == 0) {
 471                 for (i = 0; i < urb->number_of_packets; i++) {
 472                         unsigned int offset = urb->iso_frame_desc[i].offset;
 473                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 474
 475                         if (urb->iso_frame_desc[i].status)
 476                                 continue;
 477
 478                         hdev->stat.byte_rx += length;
 479
 480                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 481                                                 urb->transfer_buffer + offset,
 482                                                                 length) < 0) {
 483                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 484                                 hdev->stat.err_rx++;
 485                         }
 486                 }
 487         }
 488
 489         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 490                 return;
 491
 492         usb_anchor_urb(urb, &data->isoc_anchor);
 493
 494         err = usb_submit_urb(urb, GFP_ATOMIC);
 495         if (err < 0) {
 496                 /* -EPERM: urb is being killed;
 497                  * -ENODEV: device got disconnected */
 498                 if (err != -EPERM && err != -ENODEV)
 499                         BT_ERR("%s urb %p failed to resubmit (%d)",
 500                                                 hdev->name, urb, -err);
 501                 usb_unanchor_urb(urb);
 502         }
 503 }
 504
 505 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 506 {
 507         int i, offset = 0;
 508
 509         BT_DBG("len %d mtu %d", len, mtu);
 510
 511         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 512                                         i++, offset += mtu, len -= mtu) {
 513                 urb->iso_frame_desc[i].offset = offset;
 514                 urb->iso_frame_desc[i].length = mtu;
 515         }
 516
 517         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 518                 urb->iso_frame_desc[i].offset = offset;
 519                 urb->iso_frame_desc[i].length = len;
 520                 i++;
 521         }
 522
 523         urb->number_of_packets = i;
 524 }
 525
 526 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 527 {
 528         struct btusb_data *data = hdev->driver_data;
 529         struct urb *urb;
 530         unsigned char *buf;
 531         unsigned int pipe;
 532         int err, size;
 533
 534         BT_DBG("%s", hdev->name);
 535
 536         if (!data->isoc_rx_ep)
 537                 return -ENODEV;
 538
 539         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 540         if (!urb)
 541                 return -ENOMEM;
 542
 543         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 544                                                 BTUSB_MAX_ISOC_FRAMES;
 545
 546         buf = kmalloc(size, mem_flags);
 547         if (!buf) {
 548                 usb_free_urb(urb);
 549                 return -ENOMEM;
 550         }
 551
 552         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 553
 554         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 555                                 hdev, data->isoc_rx_ep->bInterval);
 556
 557         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 558
 559         __fill_isoc_descriptor(urb, size,
 560                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 561
 562         usb_anchor_urb(urb, &data->isoc_anchor);
 563
 564         err = usb_submit_urb(urb, mem_flags);
 565         if (err < 0) {
 566                 BT_ERR("%s urb %p submission failed (%d)",
 567                                                 hdev->name, urb, -err);
 568                 usb_unanchor_urb(urb);
 569         }
 570
 571         usb_free_urb(urb);
 572
 573         return err;
 574 }
 575
 576 static void btusb_tx_complete(struct urb *urb)
 577 {
 578         struct sk_buff *skb = urb->context;
 579         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 580         struct btusb_data *data = hdev->driver_data;
 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         spin_lock(&data->txlock);
 595         data->tx_in_flight--;
 596         spin_unlock(&data->txlock);
 597
 598         kfree(urb->setup_packet);
 599
 600         kfree_skb(skb);
 601 }
 602
 603 static void btusb_isoc_tx_complete(struct urb *urb)
 604 {
 605         struct sk_buff *skb = urb->context;
 606         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 607
 608         BT_DBG("%s urb %p status %d count %d", hdev->name,
 609                                         urb, urb->status, urb->actual_length);
 610
 611         if (!test_bit(HCI_RUNNING, &hdev->flags))
 612                 goto done;
 613
 614         if (!urb->status)
 615                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 616         else
 617                 hdev->stat.err_tx++;
 618
 619 done:
 620         kfree(urb->setup_packet);
 621
 622         kfree_skb(skb);
 623 }
 624
 625 static int btusb_open(struct hci_dev *hdev)
 626 {
 627         struct btusb_data *data = hdev->driver_data;
 628         int err;
 629
 630         BT_DBG("%s", hdev->name);
 631
 632         err = usb_autopm_get_interface(data->intf);
 633         if (err < 0)
 634                 return err;
 635
 636         data->intf->needs_remote_wakeup = 1;
 637
 638         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 639                 goto done;
 640
 641         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 642                 goto done;
 643
 644         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 645         if (err < 0)
 646                 goto failed;
 647
 648         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 649         if (err < 0) {
 650                 usb_kill_anchored_urbs(&data->intr_anchor);
 651                 goto failed;
 652         }
 653
 654         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 655         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 656
 657 done:
 658         usb_autopm_put_interface(data->intf);
 659         return 0;
 660
 661 failed:
 662         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 663         clear_bit(HCI_RUNNING, &hdev->flags);
 664         usb_autopm_put_interface(data->intf);
 665         return err;
 666 }
 667
 668 static void btusb_stop_traffic(struct btusb_data *data)
 669 {
 670         usb_kill_anchored_urbs(&data->intr_anchor);
 671         usb_kill_anchored_urbs(&data->bulk_anchor);
 672         usb_kill_anchored_urbs(&data->isoc_anchor);
 673 }
 674
 675 static int btusb_close(struct hci_dev *hdev)
 676 {
 677         struct btusb_data *data = hdev->driver_data;
 678         int err;
 679
 680         BT_DBG("%s", hdev->name);
 681
 682         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 683                 return 0;
 684
 685         cancel_work_sync(&data->work);
 686         cancel_work_sync(&data->waker);
 687
 688         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 689         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 690         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 691
 692         btusb_stop_traffic(data);
 693         err = usb_autopm_get_interface(data->intf);
 694         if (err < 0)
 695                 goto failed;
 696
 697         data->intf->needs_remote_wakeup = 0;
 698         usb_autopm_put_interface(data->intf);
 699
 700 failed:
 701         usb_scuttle_anchored_urbs(&data->deferred);
 702         return 0;
 703 }
 704
 705 static int btusb_flush(struct hci_dev *hdev)
 706 {
 707         struct btusb_data *data = hdev->driver_data;
 708
 709         BT_DBG("%s", hdev->name);
 710
 711         usb_kill_anchored_urbs(&data->tx_anchor);
 712
 713         return 0;
 714 }
 715
 716 static int btusb_send_frame(struct sk_buff *skb)
 717 {
 718         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 719         struct btusb_data *data = hdev->driver_data;
 720         struct usb_ctrlrequest *dr;
 721         struct urb *urb;
 722         unsigned int pipe;
 723         int err;
 724
 725         BT_DBG("%s", hdev->name);
 726
 727         if (!test_bit(HCI_RUNNING, &hdev->flags))
 728                 return -EBUSY;
 729
 730         switch (bt_cb(skb)->pkt_type) {
 731         case HCI_COMMAND_PKT:
 732                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 733                 if (!urb)
 734                         return -ENOMEM;
 735
 736                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 737                 if (!dr) {
 738                         usb_free_urb(urb);
 739                         return -ENOMEM;
 740                 }
 741
 742                 dr->bRequestType = data->cmdreq_type;
 743                 dr->bRequest     = 0;
 744                 dr->wIndex       = 0;
 745                 dr->wValue       = 0;
 746                 dr->wLength      = __cpu_to_le16(skb->len);
 747
 748                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 749
 750                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 751                                 skb->data, skb->len, btusb_tx_complete, skb);
 752
 753                 hdev->stat.cmd_tx++;
 754                 break;
 755
 756         case HCI_ACLDATA_PKT:
 757                 if (!data->bulk_tx_ep)
 758                         return -ENODEV;
 759
 760                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 761                 if (!urb)
 762                         return -ENOMEM;
 763
 764                 pipe = usb_sndbulkpipe(data->udev,
 765                                         data->bulk_tx_ep->bEndpointAddress);
 766
 767                 usb_fill_bulk_urb(urb, data->udev, pipe,
 768                                 skb->data, skb->len, btusb_tx_complete, skb);
 769
 770                 hdev->stat.acl_tx++;
 771                 break;
 772
 773         case HCI_SCODATA_PKT:
 774                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 775                         return -ENODEV;
 776
 777                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 778                 if (!urb)
 779                         return -ENOMEM;
 780
 781                 pipe = usb_sndisocpipe(data->udev,
 782                                         data->isoc_tx_ep->bEndpointAddress);
 783
 784                 usb_fill_int_urb(urb, data->udev, pipe,
 785                                 skb->data, skb->len, btusb_isoc_tx_complete,
 786                                 skb, data->isoc_tx_ep->bInterval);
 787
 788                 urb->transfer_flags  = URB_ISO_ASAP;
 789
 790                 __fill_isoc_descriptor(urb, skb->len,
 791                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 792
 793                 hdev->stat.sco_tx++;
 794                 goto skip_waking;
 795
 796         default:
 797                 return -EILSEQ;
 798         }
 799
 800         err = inc_tx(data);
 801         if (err) {
 802                 usb_anchor_urb(urb, &data->deferred);
 803                 schedule_work(&data->waker);
 804                 err = 0;
 805                 goto done;
 806         }
 807
 808 skip_waking:
 809         usb_anchor_urb(urb, &data->tx_anchor);
 810
 811         err = usb_submit_urb(urb, GFP_ATOMIC);
 812         if (err < 0) {
 813                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 814                 kfree(urb->setup_packet);
 815                 usb_unanchor_urb(urb);
 816         } else {
 817                 usb_mark_last_busy(data->udev);
 818         }
 819
 820 done:
 821         usb_free_urb(urb);
 822         return err;
 823 }
 824
 825 static void btusb_destruct(struct hci_dev *hdev)
 826 {
 827         struct btusb_data *data = hdev->driver_data;
 828
 829         BT_DBG("%s", hdev->name);
 830
 831         kfree(data);
 832 }
 833
 834 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 835 {
 836         struct btusb_data *data = hdev->driver_data;
 837
 838         BT_DBG("%s evt %d", hdev->name, evt);
 839
 840         if (hdev->conn_hash.sco_num != data->sco_num) {
 841                 data->sco_num = hdev->conn_hash.sco_num;
 842                 schedule_work(&data->work);
 843         }
 844 }
 845
 846 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 847 {
 848         struct btusb_data *data = hdev->driver_data;
 849         struct usb_interface *intf = data->isoc;
 850         struct usb_endpoint_descriptor *ep_desc;
 851         int i, err;
 852
 853         if (!data->isoc)
 854                 return -ENODEV;
 855
 856         err = usb_set_interface(data->udev, 1, altsetting);
 857         if (err < 0) {
 858                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 859                 return err;
 860         }
 861
 862         data->isoc_altsetting = altsetting;
 863
 864         data->isoc_tx_ep = NULL;
 865         data->isoc_rx_ep = NULL;
 866
 867         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 868                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 869
 870                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 871                         data->isoc_tx_ep = ep_desc;
 872                         continue;
 873                 }
 874
 875                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 876                         data->isoc_rx_ep = ep_desc;
 877                         continue;
 878                 }
 879         }
 880
 881         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 882                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 883                 return -ENODEV;
 884         }
 885
 886         return 0;
 887 }
 888
 889 static void btusb_work(struct work_struct *work)
 890 {
 891         struct btusb_data *data = container_of(work, struct btusb_data, work);
 892         struct hci_dev *hdev = data->hdev;
 893         int err;
 894
 895         if (hdev->conn_hash.sco_num > 0) {
 896                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 897                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 898                         if (err < 0) {
 899                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 900                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 901                                 return;
 902                         }
 903
 904                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 905                 }
 906                 if (data->isoc_altsetting != 2) {
 907                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 908                         usb_kill_anchored_urbs(&data->isoc_anchor);
 909
 910                         if (__set_isoc_interface(hdev, 2) < 0)
 911                                 return;
 912                 }
 913
 914                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 915                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 916                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 917                         else
 918                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 919                 }
 920         } else {
 921                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 922                 usb_kill_anchored_urbs(&data->isoc_anchor);
 923
 924                 __set_isoc_interface(hdev, 0);
 925                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 926                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 927         }
 928 }
 929
 930 static void btusb_waker(struct work_struct *work)
 931 {
 932         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 933         int err;
 934
 935         err = usb_autopm_get_interface(data->intf);
 936         if (err < 0)
 937                 return;
 938
 939         usb_autopm_put_interface(data->intf);
 940 }
 941
 942 static int btusb_probe(struct usb_interface *intf,
 943                                 const struct usb_device_id *id)
 944 {
 945         struct usb_endpoint_descriptor *ep_desc;
 946         struct btusb_data *data;
 947         struct hci_dev *hdev;
 948         int i, err;
 949
 950         BT_DBG("intf %p id %p", intf, id);
 951
 952         /* interface numbers are hardcoded in the spec */
 953         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 954                 return -ENODEV;
 955
 956         if (!id->driver_info) {
 957                 const struct usb_device_id *match;
 958                 match = usb_match_id(intf, blacklist_table);
 959                 if (match)
 960                         id = match;
 961         }
 962
 963         if (id->driver_info == BTUSB_IGNORE)
 964                 return -ENODEV;
 965
 966         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 967                 return -ENODEV;
 968
 969         if (ignore_csr && id->driver_info & BTUSB_CSR)
 970                 return -ENODEV;
 971
 972         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 973                 return -ENODEV;
 974
 975         if (id->driver_info & BTUSB_ATH3012) {
 976                 struct usb_device *udev = interface_to_usbdev(intf);
 977
 978                 /* Old firmware would otherwise let ath3k driver load
 979                  * patch and sysconfig files */
 980                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 981                         return -ENODEV;
 982         }
 983
 984         data = kzalloc(sizeof(*data), GFP_KERNEL);
 985         if (!data)
 986                 return -ENOMEM;
 987
 988         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 989                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 990
 991                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 992                         data->intr_ep = ep_desc;
 993                         continue;
 994                 }
 995
 996                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 997                         data->bulk_tx_ep = ep_desc;
 998                         continue;
 999                 }
1000
1001                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1002                         data->bulk_rx_ep = ep_desc;
1003                         continue;
1004                 }
1005         }
1006
1007         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
1008                 kfree(data);
1009                 return -ENODEV;
1010         }
1011
1012         data->cmdreq_type = USB_TYPE_CLASS;
1013
1014         data->udev = interface_to_usbdev(intf);
1015         data->intf = intf;
1016
1017         spin_lock_init(&data->lock);
1018
1019         INIT_WORK(&data->work, btusb_work);
1020         INIT_WORK(&data->waker, btusb_waker);
1021         spin_lock_init(&data->txlock);
1022
1023         init_usb_anchor(&data->tx_anchor);
1024         init_usb_anchor(&data->intr_anchor);
1025         init_usb_anchor(&data->bulk_anchor);
1026         init_usb_anchor(&data->isoc_anchor);
1027         init_usb_anchor(&data->deferred);
1028
1029         hdev = hci_alloc_dev();
1030         if (!hdev) {
1031                 kfree(data);
1032                 return -ENOMEM;
1033         }
1034
1035         hdev->bus = HCI_USB;
1036         hdev->driver_data = data;
1037
1038         data->hdev = hdev;
1039
1040         SET_HCIDEV_DEV(hdev, &intf->dev);
1041
1042         hdev->open     = btusb_open;
1043         hdev->close    = btusb_close;
1044         hdev->flush    = btusb_flush;
1045         hdev->send     = btusb_send_frame;
1046         hdev->destruct = btusb_destruct;
1047         hdev->notify   = btusb_notify;
1048
1049         hdev->owner = THIS_MODULE;
1050
1051         /* Interface numbers are hardcoded in the specification */
1052         data->isoc = usb_ifnum_to_if(data->udev, 1);
1053
1054         if (!reset)
1055                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1056
1057         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1058                 if (!disable_scofix)
1059                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1060         }
1061
1062         if (id->driver_info & BTUSB_BROKEN_ISOC)
1063                 data->isoc = NULL;
1064
1065         if (id->driver_info & BTUSB_DIGIANSWER) {
1066                 data->cmdreq_type = USB_TYPE_VENDOR;
1067                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1068         }
1069
1070         if (id->driver_info & BTUSB_CSR) {
1071                 struct usb_device *udev = data->udev;
1072
1073                 /* Old firmware would otherwise execute USB reset */
1074                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1075                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1076         }
1077
1078         if (id->driver_info & BTUSB_SNIFFER) {
1079                 struct usb_device *udev = data->udev;
1080
1081                 /* New sniffer firmware has crippled HCI interface */
1082                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1083                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1084
1085                 data->isoc = NULL;
1086         }
1087
1088         if (id->driver_info & BTUSB_BCM92035) {
1089                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1090                 struct sk_buff *skb;
1091
1092                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1093                 if (skb) {
1094                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1095                         skb_queue_tail(&hdev->driver_init, skb);
1096                 }
1097         }
1098
1099         if (data->isoc) {
1100                 err = usb_driver_claim_interface(&btusb_driver,
1101                                                         data->isoc, data);
1102                 if (err < 0) {
1103                         hci_free_dev(hdev);
1104                         kfree(data);
1105                         return err;
1106                 }
1107         }
1108
1109         err = hci_register_dev(hdev);
1110         if (err < 0) {
1111                 hci_free_dev(hdev);
1112                 kfree(data);
1113                 return err;
1114         }
1115
1116         usb_set_intfdata(intf, data);
1117
1118         return 0;
1119 }
1120
1121 static void btusb_disconnect(struct usb_interface *intf)
1122 {
1123         struct btusb_data *data = usb_get_intfdata(intf);
1124         struct hci_dev *hdev;
1125
1126         BT_DBG("intf %p", intf);
1127
1128         if (!data)
1129                 return;
1130
1131         hdev = data->hdev;
1132
1133         __hci_dev_hold(hdev);
1134
1135         usb_set_intfdata(data->intf, NULL);
1136
1137         if (data->isoc)
1138                 usb_set_intfdata(data->isoc, NULL);
1139
1140         hci_unregister_dev(hdev);
1141
1142         if (intf == data->isoc)
1143                 usb_driver_release_interface(&btusb_driver, data->intf);
1144         else if (data->isoc)
1145                 usb_driver_release_interface(&btusb_driver, data->isoc);
1146
1147         __hci_dev_put(hdev);
1148
1149         hci_free_dev(hdev);
1150 }
1151
1152 #ifdef CONFIG_PM
1153 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1154 {
1155         struct btusb_data *data = usb_get_intfdata(intf);
1156
1157         BT_DBG("intf %p", intf);
1158
1159         if (data->suspend_count++)
1160                 return 0;
1161
1162         spin_lock_irq(&data->txlock);
1163         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1164                 set_bit(BTUSB_SUSPENDING, &data->flags);
1165                 spin_unlock_irq(&data->txlock);
1166         } else {
1167                 spin_unlock_irq(&data->txlock);
1168                 data->suspend_count--;
1169                 return -EBUSY;
1170         }
1171
1172         cancel_work_sync(&data->work);
1173
1174         btusb_stop_traffic(data);
1175         usb_kill_anchored_urbs(&data->tx_anchor);
1176
1177         return 0;
1178 }
1179
1180 static void play_deferred(struct btusb_data *data)
1181 {
1182         struct urb *urb;
1183         int err;
1184
1185         while ((urb = usb_get_from_anchor(&data->deferred))) {
1186                 err = usb_submit_urb(urb, GFP_ATOMIC);
1187                 if (err < 0)
1188                         break;
1189
1190                 data->tx_in_flight++;
1191         }
1192         usb_scuttle_anchored_urbs(&data->deferred);
1193 }
1194
1195 static int btusb_resume(struct usb_interface *intf)
1196 {
1197         struct btusb_data *data = usb_get_intfdata(intf);
1198         struct hci_dev *hdev = data->hdev;
1199         int err = 0;
1200
1201         BT_DBG("intf %p", intf);
1202
1203         if (--data->suspend_count)
1204                 return 0;
1205
1206         if (!test_bit(HCI_RUNNING, &hdev->flags))
1207                 goto done;
1208
1209         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1210                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1211                 if (err < 0) {
1212                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1213                         goto failed;
1214                 }
1215         }
1216
1217         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1218                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1219                 if (err < 0) {
1220                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1221                         goto failed;
1222                 }
1223
1224                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1225         }
1226
1227         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1228                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1229                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1230                 else
1231                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1232         }
1233
1234         spin_lock_irq(&data->txlock);
1235         play_deferred(data);
1236         clear_bit(BTUSB_SUSPENDING, &data->flags);
1237         spin_unlock_irq(&data->txlock);
1238         schedule_work(&data->work);
1239
1240         return 0;
1241
1242 failed:
1243         usb_scuttle_anchored_urbs(&data->deferred);
1244 done:
1245         spin_lock_irq(&data->txlock);
1246         clear_bit(BTUSB_SUSPENDING, &data->flags);
1247         spin_unlock_irq(&data->txlock);
1248
1249         return err;
1250 }
1251 #endif
1252
1253 static struct usb_driver btusb_driver = {
1254         .name           = "btusb",
1255         .probe          = btusb_probe,
1256         .disconnect     = btusb_disconnect,
1257 #ifdef CONFIG_PM
1258         .suspend        = btusb_suspend,
1259         .resume         = btusb_resume,
1260 #endif
1261         .id_table       = btusb_table,
1262         .supports_autosuspend = 1,
1263 };
1264
1265 static int __init btusb_init(void)
1266 {
1267         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1268
1269         return usb_register(&btusb_driver);
1270 }
1271
1272 static void __exit btusb_exit(void)
1273 {
1274         usb_deregister(&btusb_driver);
1275 }
1276
1277 module_init(btusb_init);
1278 module_exit(btusb_exit);
1279
1280 module_param(ignore_dga, bool, 0644);
1281 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1282
1283 module_param(ignore_csr, bool, 0644);
1284 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1285
1286 module_param(ignore_sniffer, bool, 0644);
1287 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1288
1289 module_param(disable_scofix, bool, 0644);
1290 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1291
1292 module_param(force_scofix, bool, 0644);
1293 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1294
1295 module_param(reset, bool, 0644);
1296 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1297
1298 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1299 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1300 MODULE_VERSION(VERSION);
1301 MODULE_LICENSE("GPL");