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         /* Belkin F8065bf - Broadcom based */
 123         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 124
 125         { }     /* Terminating entry */
 126 };
 127
 128 MODULE_DEVICE_TABLE(usb, btusb_table);
 129
 130 static struct usb_device_id blacklist_table[] = {
 131         /* CSR BlueCore devices */
 132         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 133
 134         /* Broadcom BCM2033 without firmware */
 135         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 136
 137         /* Atheros 3011 with sflash firmware */
 138         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 139         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 140         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 141         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 142         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 143         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 144
 145         /* Atheros AR9285 Malbec with sflash firmware */
 146         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 147
 148         /* Atheros 3012 with sflash firmware */
 149         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 175
 176         /* Atheros AR5BBU12 with sflash firmware */
 177         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 178
 179         /* Atheros AR5BBU12 with sflash firmware */
 180         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 182
 183         /* Broadcom BCM2035 */
 184         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 185         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 186         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 187
 188         /* Broadcom BCM2045 */
 189         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 190         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 191
 192         /* IBM/Lenovo ThinkPad with Broadcom chip */
 193         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 194         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 195
 196         /* HP laptop with Broadcom chip */
 197         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 198
 199         /* Dell laptop with Broadcom chip */
 200         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 201
 202         /* Dell Wireless 370 and 410 devices */
 203         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 204         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 205
 206         /* Belkin F8T012 and F8T013 devices */
 207         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 208         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 209
 210         /* Asus WL-BTD202 device */
 211         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 212
 213         /* Kensington Bluetooth USB adapter */
 214         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 215
 216         /* RTX Telecom based adapters with buggy SCO support */
 217         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 218         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 219
 220         /* CONWISE Technology based adapters with buggy SCO support */
 221         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 222
 223         /* Digianswer devices */
 224         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 225         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 226
 227         /* CSR BlueCore Bluetooth Sniffer */
 228         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 229
 230         /* Frontline ComProbe Bluetooth Sniffer */
 231         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 232
 233         { }     /* Terminating entry */
 234 };
 235
 236 #define BTUSB_MAX_ISOC_FRAMES   10
 237
 238 #define BTUSB_INTR_RUNNING      0
 239 #define BTUSB_BULK_RUNNING      1
 240 #define BTUSB_ISOC_RUNNING      2
 241 #define BTUSB_SUSPENDING        3
 242 #define BTUSB_DID_ISO_RESUME    4
 243
 244 struct btusb_data {
 245         struct hci_dev       *hdev;
 246         struct usb_device    *udev;
 247         struct usb_interface *intf;
 248         struct usb_interface *isoc;
 249
 250         spinlock_t lock;
 251
 252         unsigned long flags;
 253
 254         struct work_struct work;
 255         struct work_struct waker;
 256
 257         struct usb_anchor tx_anchor;
 258         struct usb_anchor intr_anchor;
 259         struct usb_anchor bulk_anchor;
 260         struct usb_anchor isoc_anchor;
 261         struct usb_anchor deferred;
 262         int tx_in_flight;
 263         spinlock_t txlock;
 264
 265         struct usb_endpoint_descriptor *intr_ep;
 266         struct usb_endpoint_descriptor *bulk_tx_ep;
 267         struct usb_endpoint_descriptor *bulk_rx_ep;
 268         struct usb_endpoint_descriptor *isoc_tx_ep;
 269         struct usb_endpoint_descriptor *isoc_rx_ep;
 270
 271         __u8 cmdreq_type;
 272
 273         unsigned int sco_num;
 274         int isoc_altsetting;
 275         int suspend_count;
 276 };
 277
 278 static int inc_tx(struct btusb_data *data)
 279 {
 280         unsigned long flags;
 281         int rv;
 282
 283         spin_lock_irqsave(&data->txlock, flags);
 284         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 285         if (!rv)
 286                 data->tx_in_flight++;
 287         spin_unlock_irqrestore(&data->txlock, flags);
 288
 289         return rv;
 290 }
 291
 292 static void btusb_intr_complete(struct urb *urb)
 293 {
 294         struct hci_dev *hdev = urb->context;
 295         struct btusb_data *data = hdev->driver_data;
 296         int err;
 297
 298         BT_DBG("%s urb %p status %d count %d", hdev->name,
 299                                         urb, urb->status, urb->actual_length);
 300
 301         if (!test_bit(HCI_RUNNING, &hdev->flags))
 302                 return;
 303
 304         if (urb->status == 0) {
 305                 hdev->stat.byte_rx += urb->actual_length;
 306
 307                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 308                                                 urb->transfer_buffer,
 309                                                 urb->actual_length) < 0) {
 310                         BT_ERR("%s corrupted event packet", hdev->name);
 311                         hdev->stat.err_rx++;
 312                 }
 313         } else if (urb->status == -ENOENT) {
 314                 /* Avoid suspend failed when usb_kill_urb */
 315                 return;
 316         }
 317
 318         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 319                 return;
 320
 321         usb_mark_last_busy(data->udev);
 322         usb_anchor_urb(urb, &data->intr_anchor);
 323
 324         err = usb_submit_urb(urb, GFP_ATOMIC);
 325         if (err < 0) {
 326                 /* -EPERM: urb is being killed;
 327                  * -ENODEV: device got disconnected */
 328                 if (err != -EPERM && err != -ENODEV)
 329                         BT_ERR("%s urb %p failed to resubmit (%d)",
 330                                                 hdev->name, urb, -err);
 331                 usb_unanchor_urb(urb);
 332         }
 333 }
 334
 335 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 336 {
 337         struct btusb_data *data = hdev->driver_data;
 338         struct urb *urb;
 339         unsigned char *buf;
 340         unsigned int pipe;
 341         int err, size;
 342
 343         BT_DBG("%s", hdev->name);
 344
 345         if (!data->intr_ep)
 346                 return -ENODEV;
 347
 348         urb = usb_alloc_urb(0, mem_flags);
 349         if (!urb)
 350                 return -ENOMEM;
 351
 352         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 353
 354         buf = kmalloc(size, mem_flags);
 355         if (!buf) {
 356                 usb_free_urb(urb);
 357                 return -ENOMEM;
 358         }
 359
 360         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 361
 362         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 363                                                 btusb_intr_complete, hdev,
 364                                                 data->intr_ep->bInterval);
 365
 366         urb->transfer_flags |= URB_FREE_BUFFER;
 367
 368         usb_anchor_urb(urb, &data->intr_anchor);
 369
 370         err = usb_submit_urb(urb, mem_flags);
 371         if (err < 0) {
 372                 BT_ERR("%s urb %p submission failed (%d)",
 373                                                 hdev->name, urb, -err);
 374                 usb_unanchor_urb(urb);
 375         }
 376
 377         usb_free_urb(urb);
 378
 379         return err;
 380 }
 381
 382 static void btusb_bulk_complete(struct urb *urb)
 383 {
 384         struct hci_dev *hdev = urb->context;
 385         struct btusb_data *data = hdev->driver_data;
 386         int err;
 387
 388         BT_DBG("%s urb %p status %d count %d", hdev->name,
 389                                         urb, urb->status, urb->actual_length);
 390
 391         if (!test_bit(HCI_RUNNING, &hdev->flags))
 392                 return;
 393
 394         if (urb->status == 0) {
 395                 hdev->stat.byte_rx += urb->actual_length;
 396
 397                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 398                                                 urb->transfer_buffer,
 399                                                 urb->actual_length) < 0) {
 400                         BT_ERR("%s corrupted ACL packet", hdev->name);
 401                         hdev->stat.err_rx++;
 402                 }
 403         } else if (urb->status == -ENOENT) {
 404                 /* Avoid suspend failed when usb_kill_urb */
 405                 return;
 406         }
 407
 408         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 409                 return;
 410
 411         usb_anchor_urb(urb, &data->bulk_anchor);
 412         usb_mark_last_busy(data->udev);
 413
 414         err = usb_submit_urb(urb, GFP_ATOMIC);
 415         if (err < 0) {
 416                 /* -EPERM: urb is being killed;
 417                  * -ENODEV: device got disconnected */
 418                 if (err != -EPERM && err != -ENODEV)
 419                         BT_ERR("%s urb %p failed to resubmit (%d)",
 420                                                 hdev->name, urb, -err);
 421                 usb_unanchor_urb(urb);
 422         }
 423 }
 424
 425 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 426 {
 427         struct btusb_data *data = hdev->driver_data;
 428         struct urb *urb;
 429         unsigned char *buf;
 430         unsigned int pipe;
 431         int err, size = HCI_MAX_FRAME_SIZE;
 432
 433         BT_DBG("%s", hdev->name);
 434
 435         if (!data->bulk_rx_ep)
 436                 return -ENODEV;
 437
 438         urb = usb_alloc_urb(0, mem_flags);
 439         if (!urb)
 440                 return -ENOMEM;
 441
 442         buf = kmalloc(size, mem_flags);
 443         if (!buf) {
 444                 usb_free_urb(urb);
 445                 return -ENOMEM;
 446         }
 447
 448         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 449
 450         usb_fill_bulk_urb(urb, data->udev, pipe,
 451                                         buf, size, btusb_bulk_complete, hdev);
 452
 453         urb->transfer_flags |= URB_FREE_BUFFER;
 454
 455         usb_mark_last_busy(data->udev);
 456         usb_anchor_urb(urb, &data->bulk_anchor);
 457
 458         err = usb_submit_urb(urb, mem_flags);
 459         if (err < 0) {
 460                 BT_ERR("%s urb %p submission failed (%d)",
 461                                                 hdev->name, urb, -err);
 462                 usb_unanchor_urb(urb);
 463         }
 464
 465         usb_free_urb(urb);
 466
 467         return err;
 468 }
 469
 470 static void btusb_isoc_complete(struct urb *urb)
 471 {
 472         struct hci_dev *hdev = urb->context;
 473         struct btusb_data *data = hdev->driver_data;
 474         int i, err;
 475
 476         BT_DBG("%s urb %p status %d count %d", hdev->name,
 477                                         urb, urb->status, urb->actual_length);
 478
 479         if (!test_bit(HCI_RUNNING, &hdev->flags))
 480                 return;
 481
 482         if (urb->status == 0) {
 483                 for (i = 0; i < urb->number_of_packets; i++) {
 484                         unsigned int offset = urb->iso_frame_desc[i].offset;
 485                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 486
 487                         if (urb->iso_frame_desc[i].status)
 488                                 continue;
 489
 490                         hdev->stat.byte_rx += length;
 491
 492                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 493                                                 urb->transfer_buffer + offset,
 494                                                                 length) < 0) {
 495                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 496                                 hdev->stat.err_rx++;
 497                         }
 498                 }
 499         } else if (urb->status == -ENOENT) {
 500                 /* Avoid suspend failed when usb_kill_urb */
 501                 return;
 502         }
 503
 504         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 505                 return;
 506
 507         usb_anchor_urb(urb, &data->isoc_anchor);
 508
 509         err = usb_submit_urb(urb, GFP_ATOMIC);
 510         if (err < 0) {
 511                 /* -EPERM: urb is being killed;
 512                  * -ENODEV: device got disconnected */
 513                 if (err != -EPERM && err != -ENODEV)
 514                         BT_ERR("%s urb %p failed to resubmit (%d)",
 515                                                 hdev->name, urb, -err);
 516                 usb_unanchor_urb(urb);
 517         }
 518 }
 519
 520 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 521 {
 522         int i, offset = 0;
 523
 524         BT_DBG("len %d mtu %d", len, mtu);
 525
 526         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 527                                         i++, offset += mtu, len -= mtu) {
 528                 urb->iso_frame_desc[i].offset = offset;
 529                 urb->iso_frame_desc[i].length = mtu;
 530         }
 531
 532         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 533                 urb->iso_frame_desc[i].offset = offset;
 534                 urb->iso_frame_desc[i].length = len;
 535                 i++;
 536         }
 537
 538         urb->number_of_packets = i;
 539 }
 540
 541 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 542 {
 543         struct btusb_data *data = hdev->driver_data;
 544         struct urb *urb;
 545         unsigned char *buf;
 546         unsigned int pipe;
 547         int err, size;
 548
 549         BT_DBG("%s", hdev->name);
 550
 551         if (!data->isoc_rx_ep)
 552                 return -ENODEV;
 553
 554         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 555         if (!urb)
 556                 return -ENOMEM;
 557
 558         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 559                                                 BTUSB_MAX_ISOC_FRAMES;
 560
 561         buf = kmalloc(size, mem_flags);
 562         if (!buf) {
 563                 usb_free_urb(urb);
 564                 return -ENOMEM;
 565         }
 566
 567         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 568
 569         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 570                                 hdev, data->isoc_rx_ep->bInterval);
 571
 572         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 573
 574         __fill_isoc_descriptor(urb, size,
 575                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 576
 577         usb_anchor_urb(urb, &data->isoc_anchor);
 578
 579         err = usb_submit_urb(urb, mem_flags);
 580         if (err < 0) {
 581                 BT_ERR("%s urb %p submission failed (%d)",
 582                                                 hdev->name, urb, -err);
 583                 usb_unanchor_urb(urb);
 584         }
 585
 586         usb_free_urb(urb);
 587
 588         return err;
 589 }
 590
 591 static void btusb_tx_complete(struct urb *urb)
 592 {
 593         struct sk_buff *skb = urb->context;
 594         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 595         struct btusb_data *data = hdev->driver_data;
 596
 597         BT_DBG("%s urb %p status %d count %d", hdev->name,
 598                                         urb, urb->status, urb->actual_length);
 599
 600         if (!test_bit(HCI_RUNNING, &hdev->flags))
 601                 goto done;
 602
 603         if (!urb->status)
 604                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 605         else
 606                 hdev->stat.err_tx++;
 607
 608 done:
 609         spin_lock(&data->txlock);
 610         data->tx_in_flight--;
 611         spin_unlock(&data->txlock);
 612
 613         kfree(urb->setup_packet);
 614
 615         kfree_skb(skb);
 616 }
 617
 618 static void btusb_isoc_tx_complete(struct urb *urb)
 619 {
 620         struct sk_buff *skb = urb->context;
 621         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 622
 623         BT_DBG("%s urb %p status %d count %d", hdev->name,
 624                                         urb, urb->status, urb->actual_length);
 625
 626         if (!test_bit(HCI_RUNNING, &hdev->flags))
 627                 goto done;
 628
 629         if (!urb->status)
 630                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 631         else
 632                 hdev->stat.err_tx++;
 633
 634 done:
 635         kfree(urb->setup_packet);
 636
 637         kfree_skb(skb);
 638 }
 639
 640 static int btusb_open(struct hci_dev *hdev)
 641 {
 642         struct btusb_data *data = hdev->driver_data;
 643         int err;
 644
 645         BT_DBG("%s", hdev->name);
 646
 647         err = usb_autopm_get_interface(data->intf);
 648         if (err < 0)
 649                 return err;
 650
 651         data->intf->needs_remote_wakeup = 1;
 652
 653         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 654                 goto done;
 655
 656         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 657                 goto done;
 658
 659         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 660         if (err < 0)
 661                 goto failed;
 662
 663         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 664         if (err < 0) {
 665                 usb_kill_anchored_urbs(&data->intr_anchor);
 666                 goto failed;
 667         }
 668
 669         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 670         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 671
 672 done:
 673         usb_autopm_put_interface(data->intf);
 674         return 0;
 675
 676 failed:
 677         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 678         clear_bit(HCI_RUNNING, &hdev->flags);
 679         usb_autopm_put_interface(data->intf);
 680         return err;
 681 }
 682
 683 static void btusb_stop_traffic(struct btusb_data *data)
 684 {
 685         usb_kill_anchored_urbs(&data->intr_anchor);
 686         usb_kill_anchored_urbs(&data->bulk_anchor);
 687         usb_kill_anchored_urbs(&data->isoc_anchor);
 688 }
 689
 690 static int btusb_close(struct hci_dev *hdev)
 691 {
 692         struct btusb_data *data = hdev->driver_data;
 693         int err;
 694
 695         BT_DBG("%s", hdev->name);
 696
 697         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 698                 return 0;
 699
 700         cancel_work_sync(&data->work);
 701         cancel_work_sync(&data->waker);
 702
 703         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 704         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 705         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 706
 707         btusb_stop_traffic(data);
 708         err = usb_autopm_get_interface(data->intf);
 709         if (err < 0)
 710                 goto failed;
 711
 712         data->intf->needs_remote_wakeup = 0;
 713         usb_autopm_put_interface(data->intf);
 714
 715 failed:
 716         usb_scuttle_anchored_urbs(&data->deferred);
 717         return 0;
 718 }
 719
 720 static int btusb_flush(struct hci_dev *hdev)
 721 {
 722         struct btusb_data *data = hdev->driver_data;
 723
 724         BT_DBG("%s", hdev->name);
 725
 726         usb_kill_anchored_urbs(&data->tx_anchor);
 727
 728         return 0;
 729 }
 730
 731 static int btusb_send_frame(struct sk_buff *skb)
 732 {
 733         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 734         struct btusb_data *data = hdev->driver_data;
 735         struct usb_ctrlrequest *dr;
 736         struct urb *urb;
 737         unsigned int pipe;
 738         int err;
 739
 740         BT_DBG("%s", hdev->name);
 741
 742         if (!test_bit(HCI_RUNNING, &hdev->flags))
 743                 return -EBUSY;
 744
 745         switch (bt_cb(skb)->pkt_type) {
 746         case HCI_COMMAND_PKT:
 747                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 748                 if (!urb)
 749                         return -ENOMEM;
 750
 751                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 752                 if (!dr) {
 753                         usb_free_urb(urb);
 754                         return -ENOMEM;
 755                 }
 756
 757                 dr->bRequestType = data->cmdreq_type;
 758                 dr->bRequest     = 0;
 759                 dr->wIndex       = 0;
 760                 dr->wValue       = 0;
 761                 dr->wLength      = __cpu_to_le16(skb->len);
 762
 763                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 764
 765                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 766                                 skb->data, skb->len, btusb_tx_complete, skb);
 767
 768                 hdev->stat.cmd_tx++;
 769                 break;
 770
 771         case HCI_ACLDATA_PKT:
 772                 if (!data->bulk_tx_ep)
 773                         return -ENODEV;
 774
 775                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 776                 if (!urb)
 777                         return -ENOMEM;
 778
 779                 pipe = usb_sndbulkpipe(data->udev,
 780                                         data->bulk_tx_ep->bEndpointAddress);
 781
 782                 usb_fill_bulk_urb(urb, data->udev, pipe,
 783                                 skb->data, skb->len, btusb_tx_complete, skb);
 784
 785                 hdev->stat.acl_tx++;
 786                 break;
 787
 788         case HCI_SCODATA_PKT:
 789                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 790                         return -ENODEV;
 791
 792                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 793                 if (!urb)
 794                         return -ENOMEM;
 795
 796                 pipe = usb_sndisocpipe(data->udev,
 797                                         data->isoc_tx_ep->bEndpointAddress);
 798
 799                 usb_fill_int_urb(urb, data->udev, pipe,
 800                                 skb->data, skb->len, btusb_isoc_tx_complete,
 801                                 skb, data->isoc_tx_ep->bInterval);
 802
 803                 urb->transfer_flags  = URB_ISO_ASAP;
 804
 805                 __fill_isoc_descriptor(urb, skb->len,
 806                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 807
 808                 hdev->stat.sco_tx++;
 809                 goto skip_waking;
 810
 811         default:
 812                 return -EILSEQ;
 813         }
 814
 815         err = inc_tx(data);
 816         if (err) {
 817                 usb_anchor_urb(urb, &data->deferred);
 818                 schedule_work(&data->waker);
 819                 err = 0;
 820                 goto done;
 821         }
 822
 823 skip_waking:
 824         usb_anchor_urb(urb, &data->tx_anchor);
 825
 826         err = usb_submit_urb(urb, GFP_ATOMIC);
 827         if (err < 0) {
 828                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 829                 kfree(urb->setup_packet);
 830                 usb_unanchor_urb(urb);
 831         } else {
 832                 usb_mark_last_busy(data->udev);
 833         }
 834
 835 done:
 836         usb_free_urb(urb);
 837         return err;
 838 }
 839
 840 static void btusb_destruct(struct hci_dev *hdev)
 841 {
 842         struct btusb_data *data = hdev->driver_data;
 843
 844         BT_DBG("%s", hdev->name);
 845
 846         kfree(data);
 847 }
 848
 849 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 850 {
 851         struct btusb_data *data = hdev->driver_data;
 852
 853         BT_DBG("%s evt %d", hdev->name, evt);
 854
 855         if (hdev->conn_hash.sco_num != data->sco_num) {
 856                 data->sco_num = hdev->conn_hash.sco_num;
 857                 schedule_work(&data->work);
 858         }
 859 }
 860
 861 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 862 {
 863         struct btusb_data *data = hdev->driver_data;
 864         struct usb_interface *intf = data->isoc;
 865         struct usb_endpoint_descriptor *ep_desc;
 866         int i, err;
 867
 868         if (!data->isoc)
 869                 return -ENODEV;
 870
 871         err = usb_set_interface(data->udev, 1, altsetting);
 872         if (err < 0) {
 873                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 874                 return err;
 875         }
 876
 877         data->isoc_altsetting = altsetting;
 878
 879         data->isoc_tx_ep = NULL;
 880         data->isoc_rx_ep = NULL;
 881
 882         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 883                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 884
 885                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 886                         data->isoc_tx_ep = ep_desc;
 887                         continue;
 888                 }
 889
 890                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 891                         data->isoc_rx_ep = ep_desc;
 892                         continue;
 893                 }
 894         }
 895
 896         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 897                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 898                 return -ENODEV;
 899         }
 900
 901         return 0;
 902 }
 903
 904 static void btusb_work(struct work_struct *work)
 905 {
 906         struct btusb_data *data = container_of(work, struct btusb_data, work);
 907         struct hci_dev *hdev = data->hdev;
 908         int err;
 909
 910         if (hdev->conn_hash.sco_num > 0) {
 911                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 912                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 913                         if (err < 0) {
 914                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 915                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 916                                 return;
 917                         }
 918
 919                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 920                 }
 921                 if (data->isoc_altsetting != 2) {
 922                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 923                         usb_kill_anchored_urbs(&data->isoc_anchor);
 924
 925                         if (__set_isoc_interface(hdev, 2) < 0)
 926                                 return;
 927                 }
 928
 929                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 930                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 931                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 932                         else
 933                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 934                 }
 935         } else {
 936                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 937                 usb_kill_anchored_urbs(&data->isoc_anchor);
 938
 939                 __set_isoc_interface(hdev, 0);
 940                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 941                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 942         }
 943 }
 944
 945 static void btusb_waker(struct work_struct *work)
 946 {
 947         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 948         int err;
 949
 950         err = usb_autopm_get_interface(data->intf);
 951         if (err < 0)
 952                 return;
 953
 954         usb_autopm_put_interface(data->intf);
 955 }
 956
 957 static int btusb_probe(struct usb_interface *intf,
 958                                 const struct usb_device_id *id)
 959 {
 960         struct usb_endpoint_descriptor *ep_desc;
 961         struct btusb_data *data;
 962         struct hci_dev *hdev;
 963         int i, err;
 964
 965         BT_DBG("intf %p id %p", intf, id);
 966
 967         /* interface numbers are hardcoded in the spec */
 968         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 969                 return -ENODEV;
 970
 971         if (!id->driver_info) {
 972                 const struct usb_device_id *match;
 973                 match = usb_match_id(intf, blacklist_table);
 974                 if (match)
 975                         id = match;
 976         }
 977
 978         if (id->driver_info == BTUSB_IGNORE)
 979                 return -ENODEV;
 980
 981         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 982                 return -ENODEV;
 983
 984         if (ignore_csr && id->driver_info & BTUSB_CSR)
 985                 return -ENODEV;
 986
 987         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 988                 return -ENODEV;
 989
 990         if (id->driver_info & BTUSB_ATH3012) {
 991                 struct usb_device *udev = interface_to_usbdev(intf);
 992
 993                 /* Old firmware would otherwise let ath3k driver load
 994                  * patch and sysconfig files */
 995                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 996                         return -ENODEV;
 997         }
 998
 999         data = kzalloc(sizeof(*data), GFP_KERNEL);
1000         if (!data)
1001                 return -ENOMEM;
1002
1003         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1004                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1005
1006                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1007                         data->intr_ep = ep_desc;
1008                         continue;
1009                 }
1010
1011                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1012                         data->bulk_tx_ep = ep_desc;
1013                         continue;
1014                 }
1015
1016                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1017                         data->bulk_rx_ep = ep_desc;
1018                         continue;
1019                 }
1020         }
1021
1022         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
1023                 kfree(data);
1024                 return -ENODEV;
1025         }
1026
1027         data->cmdreq_type = USB_TYPE_CLASS;
1028
1029         data->udev = interface_to_usbdev(intf);
1030         data->intf = intf;
1031
1032         spin_lock_init(&data->lock);
1033
1034         INIT_WORK(&data->work, btusb_work);
1035         INIT_WORK(&data->waker, btusb_waker);
1036         spin_lock_init(&data->txlock);
1037
1038         init_usb_anchor(&data->tx_anchor);
1039         init_usb_anchor(&data->intr_anchor);
1040         init_usb_anchor(&data->bulk_anchor);
1041         init_usb_anchor(&data->isoc_anchor);
1042         init_usb_anchor(&data->deferred);
1043
1044         hdev = hci_alloc_dev();
1045         if (!hdev) {
1046                 kfree(data);
1047                 return -ENOMEM;
1048         }
1049
1050         hdev->bus = HCI_USB;
1051         hdev->driver_data = data;
1052
1053         data->hdev = hdev;
1054
1055         SET_HCIDEV_DEV(hdev, &intf->dev);
1056
1057         hdev->open     = btusb_open;
1058         hdev->close    = btusb_close;
1059         hdev->flush    = btusb_flush;
1060         hdev->send     = btusb_send_frame;
1061         hdev->destruct = btusb_destruct;
1062         hdev->notify   = btusb_notify;
1063
1064         hdev->owner = THIS_MODULE;
1065
1066         /* Interface numbers are hardcoded in the specification */
1067         data->isoc = usb_ifnum_to_if(data->udev, 1);
1068
1069         if (!reset)
1070                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1071
1072         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1073                 if (!disable_scofix)
1074                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1075         }
1076
1077         if (id->driver_info & BTUSB_BROKEN_ISOC)
1078                 data->isoc = NULL;
1079
1080         if (id->driver_info & BTUSB_DIGIANSWER) {
1081                 data->cmdreq_type = USB_TYPE_VENDOR;
1082                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1083         }
1084
1085         if (id->driver_info & BTUSB_CSR) {
1086                 struct usb_device *udev = data->udev;
1087
1088                 /* Old firmware would otherwise execute USB reset */
1089                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1090                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1091         }
1092
1093         if (id->driver_info & BTUSB_SNIFFER) {
1094                 struct usb_device *udev = data->udev;
1095
1096                 /* New sniffer firmware has crippled HCI interface */
1097                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1098                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1099
1100                 data->isoc = NULL;
1101         }
1102
1103         if (id->driver_info & BTUSB_BCM92035) {
1104                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1105                 struct sk_buff *skb;
1106
1107                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1108                 if (skb) {
1109                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1110                         skb_queue_tail(&hdev->driver_init, skb);
1111                 }
1112         }
1113
1114         if (data->isoc) {
1115                 err = usb_driver_claim_interface(&btusb_driver,
1116                                                         data->isoc, data);
1117                 if (err < 0) {
1118                         hci_free_dev(hdev);
1119                         kfree(data);
1120                         return err;
1121                 }
1122         }
1123
1124         err = hci_register_dev(hdev);
1125         if (err < 0) {
1126                 hci_free_dev(hdev);
1127                 kfree(data);
1128                 return err;
1129         }
1130
1131         usb_set_intfdata(intf, data);
1132
1133         return 0;
1134 }
1135
1136 static void btusb_disconnect(struct usb_interface *intf)
1137 {
1138         struct btusb_data *data = usb_get_intfdata(intf);
1139         struct hci_dev *hdev;
1140
1141         BT_DBG("intf %p", intf);
1142
1143         if (!data)
1144                 return;
1145
1146         hdev = data->hdev;
1147
1148         __hci_dev_hold(hdev);
1149
1150         usb_set_intfdata(data->intf, NULL);
1151
1152         if (data->isoc)
1153                 usb_set_intfdata(data->isoc, NULL);
1154
1155         hci_unregister_dev(hdev);
1156
1157         if (intf == data->isoc)
1158                 usb_driver_release_interface(&btusb_driver, data->intf);
1159         else if (data->isoc)
1160                 usb_driver_release_interface(&btusb_driver, data->isoc);
1161
1162         __hci_dev_put(hdev);
1163
1164         hci_free_dev(hdev);
1165 }
1166
1167 #ifdef CONFIG_PM
1168 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1169 {
1170         struct btusb_data *data = usb_get_intfdata(intf);
1171
1172         BT_DBG("intf %p", intf);
1173
1174         if (data->suspend_count++)
1175                 return 0;
1176
1177         spin_lock_irq(&data->txlock);
1178         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1179                 set_bit(BTUSB_SUSPENDING, &data->flags);
1180                 spin_unlock_irq(&data->txlock);
1181         } else {
1182                 spin_unlock_irq(&data->txlock);
1183                 data->suspend_count--;
1184                 return -EBUSY;
1185         }
1186
1187         cancel_work_sync(&data->work);
1188
1189         btusb_stop_traffic(data);
1190         usb_kill_anchored_urbs(&data->tx_anchor);
1191
1192         return 0;
1193 }
1194
1195 static void play_deferred(struct btusb_data *data)
1196 {
1197         struct urb *urb;
1198         int err;
1199
1200         while ((urb = usb_get_from_anchor(&data->deferred))) {
1201                 err = usb_submit_urb(urb, GFP_ATOMIC);
1202                 if (err < 0)
1203                         break;
1204
1205                 data->tx_in_flight++;
1206         }
1207         usb_scuttle_anchored_urbs(&data->deferred);
1208 }
1209
1210 static int btusb_resume(struct usb_interface *intf)
1211 {
1212         struct btusb_data *data = usb_get_intfdata(intf);
1213         struct hci_dev *hdev = data->hdev;
1214         int err = 0;
1215
1216         BT_DBG("intf %p", intf);
1217
1218         if (--data->suspend_count)
1219                 return 0;
1220
1221         if (!test_bit(HCI_RUNNING, &hdev->flags))
1222                 goto done;
1223
1224         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1225                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1226                 if (err < 0) {
1227                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1228                         goto failed;
1229                 }
1230         }
1231
1232         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1233                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1234                 if (err < 0) {
1235                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1236                         goto failed;
1237                 }
1238
1239                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1240         }
1241
1242         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1243                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1244                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1245                 else
1246                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1247         }
1248
1249         spin_lock_irq(&data->txlock);
1250         play_deferred(data);
1251         clear_bit(BTUSB_SUSPENDING, &data->flags);
1252         spin_unlock_irq(&data->txlock);
1253         schedule_work(&data->work);
1254
1255         return 0;
1256
1257 failed:
1258         usb_scuttle_anchored_urbs(&data->deferred);
1259 done:
1260         spin_lock_irq(&data->txlock);
1261         clear_bit(BTUSB_SUSPENDING, &data->flags);
1262         spin_unlock_irq(&data->txlock);
1263
1264         return err;
1265 }
1266 #endif
1267
1268 static struct usb_driver btusb_driver = {
1269         .name           = "btusb",
1270         .probe          = btusb_probe,
1271         .disconnect     = btusb_disconnect,
1272 #ifdef CONFIG_PM
1273         .suspend        = btusb_suspend,
1274         .resume         = btusb_resume,
1275 #endif
1276         .id_table       = btusb_table,
1277         .supports_autosuspend = 1,
1278 };
1279
1280 static int __init btusb_init(void)
1281 {
1282         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1283
1284         return usb_register(&btusb_driver);
1285 }
1286
1287 static void __exit btusb_exit(void)
1288 {
1289         usb_deregister(&btusb_driver);
1290 }
1291
1292 module_init(btusb_init);
1293 module_exit(btusb_exit);
1294
1295 module_param(ignore_dga, bool, 0644);
1296 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1297
1298 module_param(ignore_csr, bool, 0644);
1299 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1300
1301 module_param(ignore_sniffer, bool, 0644);
1302 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1303
1304 module_param(disable_scofix, bool, 0644);
1305 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1306
1307 module_param(force_scofix, bool, 0644);
1308 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1309
1310 module_param(reset, bool, 0644);
1311 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1312
1313 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1314 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1315 MODULE_VERSION(VERSION);
1316 MODULE_LICENSE("GPL");