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, 0x3007), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 170
 171         /* Atheros AR5BBU12 with sflash firmware */
 172         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 173
 174         /* Atheros AR5BBU12 with sflash firmware */
 175         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 177
 178         /* Broadcom BCM2035 */
 179         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 180         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 181         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 182
 183         /* Broadcom BCM2045 */
 184         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 185         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 186
 187         /* IBM/Lenovo ThinkPad with Broadcom chip */
 188         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 189         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 190
 191         /* HP laptop with Broadcom chip */
 192         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 193
 194         /* Dell laptop with Broadcom chip */
 195         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 196
 197         /* Dell Wireless 370 and 410 devices */
 198         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 199         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 200
 201         /* Belkin F8T012 and F8T013 devices */
 202         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 203         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 204
 205         /* Asus WL-BTD202 device */
 206         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 207
 208         /* Kensington Bluetooth USB adapter */
 209         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 210
 211         /* RTX Telecom based adapters with buggy SCO support */
 212         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 213         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 214
 215         /* CONWISE Technology based adapters with buggy SCO support */
 216         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 217
 218         /* Digianswer devices */
 219         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 220         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 221
 222         /* CSR BlueCore Bluetooth Sniffer */
 223         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 224
 225         /* Frontline ComProbe Bluetooth Sniffer */
 226         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 227
 228         { }     /* Terminating entry */
 229 };
 230
 231 #define BTUSB_MAX_ISOC_FRAMES   10
 232
 233 #define BTUSB_INTR_RUNNING      0
 234 #define BTUSB_BULK_RUNNING      1
 235 #define BTUSB_ISOC_RUNNING      2
 236 #define BTUSB_SUSPENDING        3
 237 #define BTUSB_DID_ISO_RESUME    4
 238
 239 struct btusb_data {
 240         struct hci_dev       *hdev;
 241         struct usb_device    *udev;
 242         struct usb_interface *intf;
 243         struct usb_interface *isoc;
 244
 245         spinlock_t lock;
 246
 247         unsigned long flags;
 248
 249         struct work_struct work;
 250         struct work_struct waker;
 251
 252         struct usb_anchor tx_anchor;
 253         struct usb_anchor intr_anchor;
 254         struct usb_anchor bulk_anchor;
 255         struct usb_anchor isoc_anchor;
 256         struct usb_anchor deferred;
 257         int tx_in_flight;
 258         spinlock_t txlock;
 259
 260         struct usb_endpoint_descriptor *intr_ep;
 261         struct usb_endpoint_descriptor *bulk_tx_ep;
 262         struct usb_endpoint_descriptor *bulk_rx_ep;
 263         struct usb_endpoint_descriptor *isoc_tx_ep;
 264         struct usb_endpoint_descriptor *isoc_rx_ep;
 265
 266         __u8 cmdreq_type;
 267
 268         unsigned int sco_num;
 269         int isoc_altsetting;
 270         int suspend_count;
 271 };
 272
 273 static int inc_tx(struct btusb_data *data)
 274 {
 275         unsigned long flags;
 276         int rv;
 277
 278         spin_lock_irqsave(&data->txlock, flags);
 279         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 280         if (!rv)
 281                 data->tx_in_flight++;
 282         spin_unlock_irqrestore(&data->txlock, flags);
 283
 284         return rv;
 285 }
 286
 287 static void btusb_intr_complete(struct urb *urb)
 288 {
 289         struct hci_dev *hdev = urb->context;
 290         struct btusb_data *data = hdev->driver_data;
 291         int err;
 292
 293         BT_DBG("%s urb %p status %d count %d", hdev->name,
 294                                         urb, urb->status, urb->actual_length);
 295
 296         if (!test_bit(HCI_RUNNING, &hdev->flags))
 297                 return;
 298
 299         if (urb->status == 0) {
 300                 hdev->stat.byte_rx += urb->actual_length;
 301
 302                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 303                                                 urb->transfer_buffer,
 304                                                 urb->actual_length) < 0) {
 305                         BT_ERR("%s corrupted event packet", hdev->name);
 306                         hdev->stat.err_rx++;
 307                 }
 308         } else if (urb->status == -ENOENT) {
 309                 /* Avoid suspend failed when usb_kill_urb */
 310                 return;
 311         }
 312
 313         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 314                 return;
 315
 316         usb_mark_last_busy(data->udev);
 317         usb_anchor_urb(urb, &data->intr_anchor);
 318
 319         err = usb_submit_urb(urb, GFP_ATOMIC);
 320         if (err < 0) {
 321                 /* -EPERM: urb is being killed;
 322                  * -ENODEV: device got disconnected */
 323                 if (err != -EPERM && err != -ENODEV)
 324                         BT_ERR("%s urb %p failed to resubmit (%d)",
 325                                                 hdev->name, urb, -err);
 326                 usb_unanchor_urb(urb);
 327         }
 328 }
 329
 330 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 331 {
 332         struct btusb_data *data = hdev->driver_data;
 333         struct urb *urb;
 334         unsigned char *buf;
 335         unsigned int pipe;
 336         int err, size;
 337
 338         BT_DBG("%s", hdev->name);
 339
 340         if (!data->intr_ep)
 341                 return -ENODEV;
 342
 343         urb = usb_alloc_urb(0, mem_flags);
 344         if (!urb)
 345                 return -ENOMEM;
 346
 347         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 348
 349         buf = kmalloc(size, mem_flags);
 350         if (!buf) {
 351                 usb_free_urb(urb);
 352                 return -ENOMEM;
 353         }
 354
 355         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 356
 357         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 358                                                 btusb_intr_complete, hdev,
 359                                                 data->intr_ep->bInterval);
 360
 361         urb->transfer_flags |= URB_FREE_BUFFER;
 362
 363         usb_anchor_urb(urb, &data->intr_anchor);
 364
 365         err = usb_submit_urb(urb, mem_flags);
 366         if (err < 0) {
 367                 BT_ERR("%s urb %p submission failed (%d)",
 368                                                 hdev->name, urb, -err);
 369                 usb_unanchor_urb(urb);
 370         }
 371
 372         usb_free_urb(urb);
 373
 374         return err;
 375 }
 376
 377 static void btusb_bulk_complete(struct urb *urb)
 378 {
 379         struct hci_dev *hdev = urb->context;
 380         struct btusb_data *data = hdev->driver_data;
 381         int err;
 382
 383         BT_DBG("%s urb %p status %d count %d", hdev->name,
 384                                         urb, urb->status, urb->actual_length);
 385
 386         if (!test_bit(HCI_RUNNING, &hdev->flags))
 387                 return;
 388
 389         if (urb->status == 0) {
 390                 hdev->stat.byte_rx += urb->actual_length;
 391
 392                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 393                                                 urb->transfer_buffer,
 394                                                 urb->actual_length) < 0) {
 395                         BT_ERR("%s corrupted ACL packet", hdev->name);
 396                         hdev->stat.err_rx++;
 397                 }
 398         } else if (urb->status == -ENOENT) {
 399                 /* Avoid suspend failed when usb_kill_urb */
 400                 return;
 401         }
 402
 403         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 404                 return;
 405
 406         usb_anchor_urb(urb, &data->bulk_anchor);
 407         usb_mark_last_busy(data->udev);
 408
 409         err = usb_submit_urb(urb, GFP_ATOMIC);
 410         if (err < 0) {
 411                 /* -EPERM: urb is being killed;
 412                  * -ENODEV: device got disconnected */
 413                 if (err != -EPERM && err != -ENODEV)
 414                         BT_ERR("%s urb %p failed to resubmit (%d)",
 415                                                 hdev->name, urb, -err);
 416                 usb_unanchor_urb(urb);
 417         }
 418 }
 419
 420 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 421 {
 422         struct btusb_data *data = hdev->driver_data;
 423         struct urb *urb;
 424         unsigned char *buf;
 425         unsigned int pipe;
 426         int err, size = HCI_MAX_FRAME_SIZE;
 427
 428         BT_DBG("%s", hdev->name);
 429
 430         if (!data->bulk_rx_ep)
 431                 return -ENODEV;
 432
 433         urb = usb_alloc_urb(0, mem_flags);
 434         if (!urb)
 435                 return -ENOMEM;
 436
 437         buf = kmalloc(size, mem_flags);
 438         if (!buf) {
 439                 usb_free_urb(urb);
 440                 return -ENOMEM;
 441         }
 442
 443         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 444
 445         usb_fill_bulk_urb(urb, data->udev, pipe,
 446                                         buf, size, btusb_bulk_complete, hdev);
 447
 448         urb->transfer_flags |= URB_FREE_BUFFER;
 449
 450         usb_mark_last_busy(data->udev);
 451         usb_anchor_urb(urb, &data->bulk_anchor);
 452
 453         err = usb_submit_urb(urb, mem_flags);
 454         if (err < 0) {
 455                 BT_ERR("%s urb %p submission failed (%d)",
 456                                                 hdev->name, urb, -err);
 457                 usb_unanchor_urb(urb);
 458         }
 459
 460         usb_free_urb(urb);
 461
 462         return err;
 463 }
 464
 465 static void btusb_isoc_complete(struct urb *urb)
 466 {
 467         struct hci_dev *hdev = urb->context;
 468         struct btusb_data *data = hdev->driver_data;
 469         int i, err;
 470
 471         BT_DBG("%s urb %p status %d count %d", hdev->name,
 472                                         urb, urb->status, urb->actual_length);
 473
 474         if (!test_bit(HCI_RUNNING, &hdev->flags))
 475                 return;
 476
 477         if (urb->status == 0) {
 478                 for (i = 0; i < urb->number_of_packets; i++) {
 479                         unsigned int offset = urb->iso_frame_desc[i].offset;
 480                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 481
 482                         if (urb->iso_frame_desc[i].status)
 483                                 continue;
 484
 485                         hdev->stat.byte_rx += length;
 486
 487                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 488                                                 urb->transfer_buffer + offset,
 489                                                                 length) < 0) {
 490                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 491                                 hdev->stat.err_rx++;
 492                         }
 493                 }
 494         } else if (urb->status == -ENOENT) {
 495                 /* Avoid suspend failed when usb_kill_urb */
 496                 return;
 497         }
 498
 499         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 500                 return;
 501
 502         usb_anchor_urb(urb, &data->isoc_anchor);
 503
 504         err = usb_submit_urb(urb, GFP_ATOMIC);
 505         if (err < 0) {
 506                 /* -EPERM: urb is being killed;
 507                  * -ENODEV: device got disconnected */
 508                 if (err != -EPERM && err != -ENODEV)
 509                         BT_ERR("%s urb %p failed to resubmit (%d)",
 510                                                 hdev->name, urb, -err);
 511                 usb_unanchor_urb(urb);
 512         }
 513 }
 514
 515 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 516 {
 517         int i, offset = 0;
 518
 519         BT_DBG("len %d mtu %d", len, mtu);
 520
 521         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 522                                         i++, offset += mtu, len -= mtu) {
 523                 urb->iso_frame_desc[i].offset = offset;
 524                 urb->iso_frame_desc[i].length = mtu;
 525         }
 526
 527         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 528                 urb->iso_frame_desc[i].offset = offset;
 529                 urb->iso_frame_desc[i].length = len;
 530                 i++;
 531         }
 532
 533         urb->number_of_packets = i;
 534 }
 535
 536 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 537 {
 538         struct btusb_data *data = hdev->driver_data;
 539         struct urb *urb;
 540         unsigned char *buf;
 541         unsigned int pipe;
 542         int err, size;
 543
 544         BT_DBG("%s", hdev->name);
 545
 546         if (!data->isoc_rx_ep)
 547                 return -ENODEV;
 548
 549         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 550         if (!urb)
 551                 return -ENOMEM;
 552
 553         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 554                                                 BTUSB_MAX_ISOC_FRAMES;
 555
 556         buf = kmalloc(size, mem_flags);
 557         if (!buf) {
 558                 usb_free_urb(urb);
 559                 return -ENOMEM;
 560         }
 561
 562         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 563
 564         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 565                                 hdev, data->isoc_rx_ep->bInterval);
 566
 567         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 568
 569         __fill_isoc_descriptor(urb, size,
 570                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 571
 572         usb_anchor_urb(urb, &data->isoc_anchor);
 573
 574         err = usb_submit_urb(urb, mem_flags);
 575         if (err < 0) {
 576                 BT_ERR("%s urb %p submission failed (%d)",
 577                                                 hdev->name, urb, -err);
 578                 usb_unanchor_urb(urb);
 579         }
 580
 581         usb_free_urb(urb);
 582
 583         return err;
 584 }
 585
 586 static void btusb_tx_complete(struct urb *urb)
 587 {
 588         struct sk_buff *skb = urb->context;
 589         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 590         struct btusb_data *data = hdev->driver_data;
 591
 592         BT_DBG("%s urb %p status %d count %d", hdev->name,
 593                                         urb, urb->status, urb->actual_length);
 594
 595         if (!test_bit(HCI_RUNNING, &hdev->flags))
 596                 goto done;
 597
 598         if (!urb->status)
 599                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 600         else
 601                 hdev->stat.err_tx++;
 602
 603 done:
 604         spin_lock(&data->txlock);
 605         data->tx_in_flight--;
 606         spin_unlock(&data->txlock);
 607
 608         kfree(urb->setup_packet);
 609
 610         kfree_skb(skb);
 611 }
 612
 613 static void btusb_isoc_tx_complete(struct urb *urb)
 614 {
 615         struct sk_buff *skb = urb->context;
 616         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 617
 618         BT_DBG("%s urb %p status %d count %d", hdev->name,
 619                                         urb, urb->status, urb->actual_length);
 620
 621         if (!test_bit(HCI_RUNNING, &hdev->flags))
 622                 goto done;
 623
 624         if (!urb->status)
 625                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 626         else
 627                 hdev->stat.err_tx++;
 628
 629 done:
 630         kfree(urb->setup_packet);
 631
 632         kfree_skb(skb);
 633 }
 634
 635 static int btusb_open(struct hci_dev *hdev)
 636 {
 637         struct btusb_data *data = hdev->driver_data;
 638         int err;
 639
 640         BT_DBG("%s", hdev->name);
 641
 642         err = usb_autopm_get_interface(data->intf);
 643         if (err < 0)
 644                 return err;
 645
 646         data->intf->needs_remote_wakeup = 1;
 647
 648         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 649                 goto done;
 650
 651         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 652                 goto done;
 653
 654         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 655         if (err < 0)
 656                 goto failed;
 657
 658         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 659         if (err < 0) {
 660                 usb_kill_anchored_urbs(&data->intr_anchor);
 661                 goto failed;
 662         }
 663
 664         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 665         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 666
 667 done:
 668         usb_autopm_put_interface(data->intf);
 669         return 0;
 670
 671 failed:
 672         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 673         clear_bit(HCI_RUNNING, &hdev->flags);
 674         usb_autopm_put_interface(data->intf);
 675         return err;
 676 }
 677
 678 static void btusb_stop_traffic(struct btusb_data *data)
 679 {
 680         usb_kill_anchored_urbs(&data->intr_anchor);
 681         usb_kill_anchored_urbs(&data->bulk_anchor);
 682         usb_kill_anchored_urbs(&data->isoc_anchor);
 683 }
 684
 685 static int btusb_close(struct hci_dev *hdev)
 686 {
 687         struct btusb_data *data = hdev->driver_data;
 688         int err;
 689
 690         BT_DBG("%s", hdev->name);
 691
 692         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 693                 return 0;
 694
 695         cancel_work_sync(&data->work);
 696         cancel_work_sync(&data->waker);
 697
 698         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 699         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 700         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 701
 702         btusb_stop_traffic(data);
 703         err = usb_autopm_get_interface(data->intf);
 704         if (err < 0)
 705                 goto failed;
 706
 707         data->intf->needs_remote_wakeup = 0;
 708         usb_autopm_put_interface(data->intf);
 709
 710 failed:
 711         usb_scuttle_anchored_urbs(&data->deferred);
 712         return 0;
 713 }
 714
 715 static int btusb_flush(struct hci_dev *hdev)
 716 {
 717         struct btusb_data *data = hdev->driver_data;
 718
 719         BT_DBG("%s", hdev->name);
 720
 721         usb_kill_anchored_urbs(&data->tx_anchor);
 722
 723         return 0;
 724 }
 725
 726 static int btusb_send_frame(struct sk_buff *skb)
 727 {
 728         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 729         struct btusb_data *data = hdev->driver_data;
 730         struct usb_ctrlrequest *dr;
 731         struct urb *urb;
 732         unsigned int pipe;
 733         int err;
 734
 735         BT_DBG("%s", hdev->name);
 736
 737         if (!test_bit(HCI_RUNNING, &hdev->flags))
 738                 return -EBUSY;
 739
 740         switch (bt_cb(skb)->pkt_type) {
 741         case HCI_COMMAND_PKT:
 742                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 743                 if (!urb)
 744                         return -ENOMEM;
 745
 746                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 747                 if (!dr) {
 748                         usb_free_urb(urb);
 749                         return -ENOMEM;
 750                 }
 751
 752                 dr->bRequestType = data->cmdreq_type;
 753                 dr->bRequest     = 0;
 754                 dr->wIndex       = 0;
 755                 dr->wValue       = 0;
 756                 dr->wLength      = __cpu_to_le16(skb->len);
 757
 758                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 759
 760                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 761                                 skb->data, skb->len, btusb_tx_complete, skb);
 762
 763                 hdev->stat.cmd_tx++;
 764                 break;
 765
 766         case HCI_ACLDATA_PKT:
 767                 if (!data->bulk_tx_ep)
 768                         return -ENODEV;
 769
 770                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 771                 if (!urb)
 772                         return -ENOMEM;
 773
 774                 pipe = usb_sndbulkpipe(data->udev,
 775                                         data->bulk_tx_ep->bEndpointAddress);
 776
 777                 usb_fill_bulk_urb(urb, data->udev, pipe,
 778                                 skb->data, skb->len, btusb_tx_complete, skb);
 779
 780                 hdev->stat.acl_tx++;
 781                 break;
 782
 783         case HCI_SCODATA_PKT:
 784                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 785                         return -ENODEV;
 786
 787                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 788                 if (!urb)
 789                         return -ENOMEM;
 790
 791                 pipe = usb_sndisocpipe(data->udev,
 792                                         data->isoc_tx_ep->bEndpointAddress);
 793
 794                 usb_fill_int_urb(urb, data->udev, pipe,
 795                                 skb->data, skb->len, btusb_isoc_tx_complete,
 796                                 skb, data->isoc_tx_ep->bInterval);
 797
 798                 urb->transfer_flags  = URB_ISO_ASAP;
 799
 800                 __fill_isoc_descriptor(urb, skb->len,
 801                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 802
 803                 hdev->stat.sco_tx++;
 804                 goto skip_waking;
 805
 806         default:
 807                 return -EILSEQ;
 808         }
 809
 810         err = inc_tx(data);
 811         if (err) {
 812                 usb_anchor_urb(urb, &data->deferred);
 813                 schedule_work(&data->waker);
 814                 err = 0;
 815                 goto done;
 816         }
 817
 818 skip_waking:
 819         usb_anchor_urb(urb, &data->tx_anchor);
 820
 821         err = usb_submit_urb(urb, GFP_ATOMIC);
 822         if (err < 0) {
 823                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 824                 kfree(urb->setup_packet);
 825                 usb_unanchor_urb(urb);
 826         } else {
 827                 usb_mark_last_busy(data->udev);
 828         }
 829
 830 done:
 831         usb_free_urb(urb);
 832         return err;
 833 }
 834
 835 static void btusb_destruct(struct hci_dev *hdev)
 836 {
 837         struct btusb_data *data = hdev->driver_data;
 838
 839         BT_DBG("%s", hdev->name);
 840
 841         kfree(data);
 842 }
 843
 844 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 845 {
 846         struct btusb_data *data = hdev->driver_data;
 847
 848         BT_DBG("%s evt %d", hdev->name, evt);
 849
 850         if (hdev->conn_hash.sco_num != data->sco_num) {
 851                 data->sco_num = hdev->conn_hash.sco_num;
 852                 schedule_work(&data->work);
 853         }
 854 }
 855
 856 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 857 {
 858         struct btusb_data *data = hdev->driver_data;
 859         struct usb_interface *intf = data->isoc;
 860         struct usb_endpoint_descriptor *ep_desc;
 861         int i, err;
 862
 863         if (!data->isoc)
 864                 return -ENODEV;
 865
 866         err = usb_set_interface(data->udev, 1, altsetting);
 867         if (err < 0) {
 868                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 869                 return err;
 870         }
 871
 872         data->isoc_altsetting = altsetting;
 873
 874         data->isoc_tx_ep = NULL;
 875         data->isoc_rx_ep = NULL;
 876
 877         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 878                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 879
 880                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 881                         data->isoc_tx_ep = ep_desc;
 882                         continue;
 883                 }
 884
 885                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 886                         data->isoc_rx_ep = ep_desc;
 887                         continue;
 888                 }
 889         }
 890
 891         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 892                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 893                 return -ENODEV;
 894         }
 895
 896         return 0;
 897 }
 898
 899 static void btusb_work(struct work_struct *work)
 900 {
 901         struct btusb_data *data = container_of(work, struct btusb_data, work);
 902         struct hci_dev *hdev = data->hdev;
 903         int err;
 904
 905         if (hdev->conn_hash.sco_num > 0) {
 906                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 907                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 908                         if (err < 0) {
 909                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 910                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 911                                 return;
 912                         }
 913
 914                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 915                 }
 916                 if (data->isoc_altsetting != 2) {
 917                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 918                         usb_kill_anchored_urbs(&data->isoc_anchor);
 919
 920                         if (__set_isoc_interface(hdev, 2) < 0)
 921                                 return;
 922                 }
 923
 924                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 925                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 926                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 927                         else
 928                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 929                 }
 930         } else {
 931                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 932                 usb_kill_anchored_urbs(&data->isoc_anchor);
 933
 934                 __set_isoc_interface(hdev, 0);
 935                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 936                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 937         }
 938 }
 939
 940 static void btusb_waker(struct work_struct *work)
 941 {
 942         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 943         int err;
 944
 945         err = usb_autopm_get_interface(data->intf);
 946         if (err < 0)
 947                 return;
 948
 949         usb_autopm_put_interface(data->intf);
 950 }
 951
 952 static int btusb_probe(struct usb_interface *intf,
 953                                 const struct usb_device_id *id)
 954 {
 955         struct usb_endpoint_descriptor *ep_desc;
 956         struct btusb_data *data;
 957         struct hci_dev *hdev;
 958         int i, err;
 959
 960         BT_DBG("intf %p id %p", intf, id);
 961
 962         /* interface numbers are hardcoded in the spec */
 963         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 964                 return -ENODEV;
 965
 966         if (!id->driver_info) {
 967                 const struct usb_device_id *match;
 968                 match = usb_match_id(intf, blacklist_table);
 969                 if (match)
 970                         id = match;
 971         }
 972
 973         if (id->driver_info == BTUSB_IGNORE)
 974                 return -ENODEV;
 975
 976         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 977                 return -ENODEV;
 978
 979         if (ignore_csr && id->driver_info & BTUSB_CSR)
 980                 return -ENODEV;
 981
 982         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 983                 return -ENODEV;
 984
 985         if (id->driver_info & BTUSB_ATH3012) {
 986                 struct usb_device *udev = interface_to_usbdev(intf);
 987
 988                 /* Old firmware would otherwise let ath3k driver load
 989                  * patch and sysconfig files */
 990                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 991                         return -ENODEV;
 992         }
 993
 994         data = kzalloc(sizeof(*data), GFP_KERNEL);
 995         if (!data)
 996                 return -ENOMEM;
 997
 998         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 999                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1000
1001                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1002                         data->intr_ep = ep_desc;
1003                         continue;
1004                 }
1005
1006                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1007                         data->bulk_tx_ep = ep_desc;
1008                         continue;
1009                 }
1010
1011                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1012                         data->bulk_rx_ep = ep_desc;
1013                         continue;
1014                 }
1015         }
1016
1017         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
1018                 kfree(data);
1019                 return -ENODEV;
1020         }
1021
1022         data->cmdreq_type = USB_TYPE_CLASS;
1023
1024         data->udev = interface_to_usbdev(intf);
1025         data->intf = intf;
1026
1027         spin_lock_init(&data->lock);
1028
1029         INIT_WORK(&data->work, btusb_work);
1030         INIT_WORK(&data->waker, btusb_waker);
1031         spin_lock_init(&data->txlock);
1032
1033         init_usb_anchor(&data->tx_anchor);
1034         init_usb_anchor(&data->intr_anchor);
1035         init_usb_anchor(&data->bulk_anchor);
1036         init_usb_anchor(&data->isoc_anchor);
1037         init_usb_anchor(&data->deferred);
1038
1039         hdev = hci_alloc_dev();
1040         if (!hdev) {
1041                 kfree(data);
1042                 return -ENOMEM;
1043         }
1044
1045         hdev->bus = HCI_USB;
1046         hdev->driver_data = data;
1047
1048         data->hdev = hdev;
1049
1050         SET_HCIDEV_DEV(hdev, &intf->dev);
1051
1052         hdev->open     = btusb_open;
1053         hdev->close    = btusb_close;
1054         hdev->flush    = btusb_flush;
1055         hdev->send     = btusb_send_frame;
1056         hdev->destruct = btusb_destruct;
1057         hdev->notify   = btusb_notify;
1058
1059         hdev->owner = THIS_MODULE;
1060
1061         /* Interface numbers are hardcoded in the specification */
1062         data->isoc = usb_ifnum_to_if(data->udev, 1);
1063
1064         if (!reset)
1065                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1066
1067         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1068                 if (!disable_scofix)
1069                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1070         }
1071
1072         if (id->driver_info & BTUSB_BROKEN_ISOC)
1073                 data->isoc = NULL;
1074
1075         if (id->driver_info & BTUSB_DIGIANSWER) {
1076                 data->cmdreq_type = USB_TYPE_VENDOR;
1077                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1078         }
1079
1080         if (id->driver_info & BTUSB_CSR) {
1081                 struct usb_device *udev = data->udev;
1082
1083                 /* Old firmware would otherwise execute USB reset */
1084                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1085                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1086         }
1087
1088         if (id->driver_info & BTUSB_SNIFFER) {
1089                 struct usb_device *udev = data->udev;
1090
1091                 /* New sniffer firmware has crippled HCI interface */
1092                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1093                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1094
1095                 data->isoc = NULL;
1096         }
1097
1098         if (id->driver_info & BTUSB_BCM92035) {
1099                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1100                 struct sk_buff *skb;
1101
1102                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1103                 if (skb) {
1104                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1105                         skb_queue_tail(&hdev->driver_init, skb);
1106                 }
1107         }
1108
1109         if (data->isoc) {
1110                 err = usb_driver_claim_interface(&btusb_driver,
1111                                                         data->isoc, data);
1112                 if (err < 0) {
1113                         hci_free_dev(hdev);
1114                         kfree(data);
1115                         return err;
1116                 }
1117         }
1118
1119         err = hci_register_dev(hdev);
1120         if (err < 0) {
1121                 hci_free_dev(hdev);
1122                 kfree(data);
1123                 return err;
1124         }
1125
1126         usb_set_intfdata(intf, data);
1127
1128         return 0;
1129 }
1130
1131 static void btusb_disconnect(struct usb_interface *intf)
1132 {
1133         struct btusb_data *data = usb_get_intfdata(intf);
1134         struct hci_dev *hdev;
1135
1136         BT_DBG("intf %p", intf);
1137
1138         if (!data)
1139                 return;
1140
1141         hdev = data->hdev;
1142
1143         __hci_dev_hold(hdev);
1144
1145         usb_set_intfdata(data->intf, NULL);
1146
1147         if (data->isoc)
1148                 usb_set_intfdata(data->isoc, NULL);
1149
1150         hci_unregister_dev(hdev);
1151
1152         if (intf == data->isoc)
1153                 usb_driver_release_interface(&btusb_driver, data->intf);
1154         else if (data->isoc)
1155                 usb_driver_release_interface(&btusb_driver, data->isoc);
1156
1157         __hci_dev_put(hdev);
1158
1159         hci_free_dev(hdev);
1160 }
1161
1162 #ifdef CONFIG_PM
1163 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1164 {
1165         struct btusb_data *data = usb_get_intfdata(intf);
1166
1167         BT_DBG("intf %p", intf);
1168
1169         if (data->suspend_count++)
1170                 return 0;
1171
1172         spin_lock_irq(&data->txlock);
1173         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1174                 set_bit(BTUSB_SUSPENDING, &data->flags);
1175                 spin_unlock_irq(&data->txlock);
1176         } else {
1177                 spin_unlock_irq(&data->txlock);
1178                 data->suspend_count--;
1179                 return -EBUSY;
1180         }
1181
1182         cancel_work_sync(&data->work);
1183
1184         btusb_stop_traffic(data);
1185         usb_kill_anchored_urbs(&data->tx_anchor);
1186
1187         return 0;
1188 }
1189
1190 static void play_deferred(struct btusb_data *data)
1191 {
1192         struct urb *urb;
1193         int err;
1194
1195         while ((urb = usb_get_from_anchor(&data->deferred))) {
1196                 err = usb_submit_urb(urb, GFP_ATOMIC);
1197                 if (err < 0)
1198                         break;
1199
1200                 data->tx_in_flight++;
1201         }
1202         usb_scuttle_anchored_urbs(&data->deferred);
1203 }
1204
1205 static int btusb_resume(struct usb_interface *intf)
1206 {
1207         struct btusb_data *data = usb_get_intfdata(intf);
1208         struct hci_dev *hdev = data->hdev;
1209         int err = 0;
1210
1211         BT_DBG("intf %p", intf);
1212
1213         if (--data->suspend_count)
1214                 return 0;
1215
1216         if (!test_bit(HCI_RUNNING, &hdev->flags))
1217                 goto done;
1218
1219         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1220                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1221                 if (err < 0) {
1222                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1223                         goto failed;
1224                 }
1225         }
1226
1227         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1228                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1229                 if (err < 0) {
1230                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1231                         goto failed;
1232                 }
1233
1234                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1235         }
1236
1237         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1238                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1239                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1240                 else
1241                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1242         }
1243
1244         spin_lock_irq(&data->txlock);
1245         play_deferred(data);
1246         clear_bit(BTUSB_SUSPENDING, &data->flags);
1247         spin_unlock_irq(&data->txlock);
1248         schedule_work(&data->work);
1249
1250         return 0;
1251
1252 failed:
1253         usb_scuttle_anchored_urbs(&data->deferred);
1254 done:
1255         spin_lock_irq(&data->txlock);
1256         clear_bit(BTUSB_SUSPENDING, &data->flags);
1257         spin_unlock_irq(&data->txlock);
1258
1259         return err;
1260 }
1261 #endif
1262
1263 static struct usb_driver btusb_driver = {
1264         .name           = "btusb",
1265         .probe          = btusb_probe,
1266         .disconnect     = btusb_disconnect,
1267 #ifdef CONFIG_PM
1268         .suspend        = btusb_suspend,
1269         .resume         = btusb_resume,
1270 #endif
1271         .id_table       = btusb_table,
1272         .supports_autosuspend = 1,
1273 };
1274
1275 static int __init btusb_init(void)
1276 {
1277         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1278
1279         return usb_register(&btusb_driver);
1280 }
1281
1282 static void __exit btusb_exit(void)
1283 {
1284         usb_deregister(&btusb_driver);
1285 }
1286
1287 module_init(btusb_init);
1288 module_exit(btusb_exit);
1289
1290 module_param(ignore_dga, bool, 0644);
1291 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1292
1293 module_param(ignore_csr, bool, 0644);
1294 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1295
1296 module_param(ignore_sniffer, bool, 0644);
1297 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1298
1299 module_param(disable_scofix, bool, 0644);
1300 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1301
1302 module_param(force_scofix, bool, 0644);
1303 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1304
1305 module_param(reset, bool, 0644);
1306 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1307
1308 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1309 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1310 MODULE_VERSION(VERSION);
1311 MODULE_LICENSE("GPL");