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, 0x311e), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 177
 178         /* Atheros AR5BBU12 with sflash firmware */
 179         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 180
 181         /* Atheros AR5BBU12 with sflash firmware */
 182         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 184
 185         /* Broadcom BCM2035 */
 186         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 187         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 188         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 189
 190         /* Broadcom BCM2045 */
 191         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 192         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 193
 194         /* IBM/Lenovo ThinkPad with Broadcom chip */
 195         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 196         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 197
 198         /* HP laptop with Broadcom chip */
 199         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 200
 201         /* Dell laptop with Broadcom chip */
 202         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 203
 204         /* Dell Wireless 370 and 410 devices */
 205         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 206         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 207
 208         /* Belkin F8T012 and F8T013 devices */
 209         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 210         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 211
 212         /* Asus WL-BTD202 device */
 213         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 214
 215         /* Kensington Bluetooth USB adapter */
 216         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 217
 218         /* RTX Telecom based adapters with buggy SCO support */
 219         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 220         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 221
 222         /* CONWISE Technology based adapters with buggy SCO support */
 223         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 224
 225         /* Digianswer devices */
 226         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 227         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 228
 229         /* CSR BlueCore Bluetooth Sniffer */
 230         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 231
 232         /* Frontline ComProbe Bluetooth Sniffer */
 233         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 234
 235         { }     /* Terminating entry */
 236 };
 237
 238 #define BTUSB_MAX_ISOC_FRAMES   10
 239
 240 #define BTUSB_INTR_RUNNING      0
 241 #define BTUSB_BULK_RUNNING      1
 242 #define BTUSB_ISOC_RUNNING      2
 243 #define BTUSB_SUSPENDING        3
 244 #define BTUSB_DID_ISO_RESUME    4
 245
 246 struct btusb_data {
 247         struct hci_dev       *hdev;
 248         struct usb_device    *udev;
 249         struct usb_interface *intf;
 250         struct usb_interface *isoc;
 251
 252         spinlock_t lock;
 253
 254         unsigned long flags;
 255
 256         struct work_struct work;
 257         struct work_struct waker;
 258
 259         struct usb_anchor tx_anchor;
 260         struct usb_anchor intr_anchor;
 261         struct usb_anchor bulk_anchor;
 262         struct usb_anchor isoc_anchor;
 263         struct usb_anchor deferred;
 264         int tx_in_flight;
 265         spinlock_t txlock;
 266
 267         struct usb_endpoint_descriptor *intr_ep;
 268         struct usb_endpoint_descriptor *bulk_tx_ep;
 269         struct usb_endpoint_descriptor *bulk_rx_ep;
 270         struct usb_endpoint_descriptor *isoc_tx_ep;
 271         struct usb_endpoint_descriptor *isoc_rx_ep;
 272
 273         __u8 cmdreq_type;
 274
 275         unsigned int sco_num;
 276         int isoc_altsetting;
 277         int suspend_count;
 278 };
 279
 280 static int inc_tx(struct btusb_data *data)
 281 {
 282         unsigned long flags;
 283         int rv;
 284
 285         spin_lock_irqsave(&data->txlock, flags);
 286         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 287         if (!rv)
 288                 data->tx_in_flight++;
 289         spin_unlock_irqrestore(&data->txlock, flags);
 290
 291         return rv;
 292 }
 293
 294 static void btusb_intr_complete(struct urb *urb)
 295 {
 296         struct hci_dev *hdev = urb->context;
 297         struct btusb_data *data = hdev->driver_data;
 298         int err;
 299
 300         BT_DBG("%s urb %p status %d count %d", hdev->name,
 301                                         urb, urb->status, urb->actual_length);
 302
 303         if (!test_bit(HCI_RUNNING, &hdev->flags))
 304                 return;
 305
 306         if (urb->status == 0) {
 307                 hdev->stat.byte_rx += urb->actual_length;
 308
 309                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 310                                                 urb->transfer_buffer,
 311                                                 urb->actual_length) < 0) {
 312                         BT_ERR("%s corrupted event packet", hdev->name);
 313                         hdev->stat.err_rx++;
 314                 }
 315         } else if (urb->status == -ENOENT) {
 316                 /* Avoid suspend failed when usb_kill_urb */
 317                 return;
 318         }
 319
 320         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 321                 return;
 322
 323         usb_mark_last_busy(data->udev);
 324         usb_anchor_urb(urb, &data->intr_anchor);
 325
 326         err = usb_submit_urb(urb, GFP_ATOMIC);
 327         if (err < 0) {
 328                 /* -EPERM: urb is being killed;
 329                  * -ENODEV: device got disconnected */
 330                 if (err != -EPERM && err != -ENODEV)
 331                         BT_ERR("%s urb %p failed to resubmit (%d)",
 332                                                 hdev->name, urb, -err);
 333                 usb_unanchor_urb(urb);
 334         }
 335 }
 336
 337 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 338 {
 339         struct btusb_data *data = hdev->driver_data;
 340         struct urb *urb;
 341         unsigned char *buf;
 342         unsigned int pipe;
 343         int err, size;
 344
 345         BT_DBG("%s", hdev->name);
 346
 347         if (!data->intr_ep)
 348                 return -ENODEV;
 349
 350         urb = usb_alloc_urb(0, mem_flags);
 351         if (!urb)
 352                 return -ENOMEM;
 353
 354         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 355
 356         buf = kmalloc(size, mem_flags);
 357         if (!buf) {
 358                 usb_free_urb(urb);
 359                 return -ENOMEM;
 360         }
 361
 362         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 363
 364         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 365                                                 btusb_intr_complete, hdev,
 366                                                 data->intr_ep->bInterval);
 367
 368         urb->transfer_flags |= URB_FREE_BUFFER;
 369
 370         usb_anchor_urb(urb, &data->intr_anchor);
 371
 372         err = usb_submit_urb(urb, mem_flags);
 373         if (err < 0) {
 374                 BT_ERR("%s urb %p submission failed (%d)",
 375                                                 hdev->name, urb, -err);
 376                 usb_unanchor_urb(urb);
 377         }
 378
 379         usb_free_urb(urb);
 380
 381         return err;
 382 }
 383
 384 static void btusb_bulk_complete(struct urb *urb)
 385 {
 386         struct hci_dev *hdev = urb->context;
 387         struct btusb_data *data = hdev->driver_data;
 388         int err;
 389
 390         BT_DBG("%s urb %p status %d count %d", hdev->name,
 391                                         urb, urb->status, urb->actual_length);
 392
 393         if (!test_bit(HCI_RUNNING, &hdev->flags))
 394                 return;
 395
 396         if (urb->status == 0) {
 397                 hdev->stat.byte_rx += urb->actual_length;
 398
 399                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 400                                                 urb->transfer_buffer,
 401                                                 urb->actual_length) < 0) {
 402                         BT_ERR("%s corrupted ACL packet", hdev->name);
 403                         hdev->stat.err_rx++;
 404                 }
 405         } else if (urb->status == -ENOENT) {
 406                 /* Avoid suspend failed when usb_kill_urb */
 407                 return;
 408         }
 409
 410         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 411                 return;
 412
 413         usb_anchor_urb(urb, &data->bulk_anchor);
 414         usb_mark_last_busy(data->udev);
 415
 416         err = usb_submit_urb(urb, GFP_ATOMIC);
 417         if (err < 0) {
 418                 /* -EPERM: urb is being killed;
 419                  * -ENODEV: device got disconnected */
 420                 if (err != -EPERM && err != -ENODEV)
 421                         BT_ERR("%s urb %p failed to resubmit (%d)",
 422                                                 hdev->name, urb, -err);
 423                 usb_unanchor_urb(urb);
 424         }
 425 }
 426
 427 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 428 {
 429         struct btusb_data *data = hdev->driver_data;
 430         struct urb *urb;
 431         unsigned char *buf;
 432         unsigned int pipe;
 433         int err, size = HCI_MAX_FRAME_SIZE;
 434
 435         BT_DBG("%s", hdev->name);
 436
 437         if (!data->bulk_rx_ep)
 438                 return -ENODEV;
 439
 440         urb = usb_alloc_urb(0, mem_flags);
 441         if (!urb)
 442                 return -ENOMEM;
 443
 444         buf = kmalloc(size, mem_flags);
 445         if (!buf) {
 446                 usb_free_urb(urb);
 447                 return -ENOMEM;
 448         }
 449
 450         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 451
 452         usb_fill_bulk_urb(urb, data->udev, pipe,
 453                                         buf, size, btusb_bulk_complete, hdev);
 454
 455         urb->transfer_flags |= URB_FREE_BUFFER;
 456
 457         usb_mark_last_busy(data->udev);
 458         usb_anchor_urb(urb, &data->bulk_anchor);
 459
 460         err = usb_submit_urb(urb, mem_flags);
 461         if (err < 0) {
 462                 BT_ERR("%s urb %p submission failed (%d)",
 463                                                 hdev->name, urb, -err);
 464                 usb_unanchor_urb(urb);
 465         }
 466
 467         usb_free_urb(urb);
 468
 469         return err;
 470 }
 471
 472 static void btusb_isoc_complete(struct urb *urb)
 473 {
 474         struct hci_dev *hdev = urb->context;
 475         struct btusb_data *data = hdev->driver_data;
 476         int i, err;
 477
 478         BT_DBG("%s urb %p status %d count %d", hdev->name,
 479                                         urb, urb->status, urb->actual_length);
 480
 481         if (!test_bit(HCI_RUNNING, &hdev->flags))
 482                 return;
 483
 484         if (urb->status == 0) {
 485                 for (i = 0; i < urb->number_of_packets; i++) {
 486                         unsigned int offset = urb->iso_frame_desc[i].offset;
 487                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 488
 489                         if (urb->iso_frame_desc[i].status)
 490                                 continue;
 491
 492                         hdev->stat.byte_rx += length;
 493
 494                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 495                                                 urb->transfer_buffer + offset,
 496                                                                 length) < 0) {
 497                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 498                                 hdev->stat.err_rx++;
 499                         }
 500                 }
 501         } else if (urb->status == -ENOENT) {
 502                 /* Avoid suspend failed when usb_kill_urb */
 503                 return;
 504         }
 505
 506         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 507                 return;
 508
 509         usb_anchor_urb(urb, &data->isoc_anchor);
 510
 511         err = usb_submit_urb(urb, GFP_ATOMIC);
 512         if (err < 0) {
 513                 /* -EPERM: urb is being killed;
 514                  * -ENODEV: device got disconnected */
 515                 if (err != -EPERM && err != -ENODEV)
 516                         BT_ERR("%s urb %p failed to resubmit (%d)",
 517                                                 hdev->name, urb, -err);
 518                 usb_unanchor_urb(urb);
 519         }
 520 }
 521
 522 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 523 {
 524         int i, offset = 0;
 525
 526         BT_DBG("len %d mtu %d", len, mtu);
 527
 528         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 529                                         i++, offset += mtu, len -= mtu) {
 530                 urb->iso_frame_desc[i].offset = offset;
 531                 urb->iso_frame_desc[i].length = mtu;
 532         }
 533
 534         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 535                 urb->iso_frame_desc[i].offset = offset;
 536                 urb->iso_frame_desc[i].length = len;
 537                 i++;
 538         }
 539
 540         urb->number_of_packets = i;
 541 }
 542
 543 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 544 {
 545         struct btusb_data *data = hdev->driver_data;
 546         struct urb *urb;
 547         unsigned char *buf;
 548         unsigned int pipe;
 549         int err, size;
 550
 551         BT_DBG("%s", hdev->name);
 552
 553         if (!data->isoc_rx_ep)
 554                 return -ENODEV;
 555
 556         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 557         if (!urb)
 558                 return -ENOMEM;
 559
 560         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 561                                                 BTUSB_MAX_ISOC_FRAMES;
 562
 563         buf = kmalloc(size, mem_flags);
 564         if (!buf) {
 565                 usb_free_urb(urb);
 566                 return -ENOMEM;
 567         }
 568
 569         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 570
 571         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 572                                 hdev, data->isoc_rx_ep->bInterval);
 573
 574         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 575
 576         __fill_isoc_descriptor(urb, size,
 577                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 578
 579         usb_anchor_urb(urb, &data->isoc_anchor);
 580
 581         err = usb_submit_urb(urb, mem_flags);
 582         if (err < 0) {
 583                 BT_ERR("%s urb %p submission failed (%d)",
 584                                                 hdev->name, urb, -err);
 585                 usb_unanchor_urb(urb);
 586         }
 587
 588         usb_free_urb(urb);
 589
 590         return err;
 591 }
 592
 593 static void btusb_tx_complete(struct urb *urb)
 594 {
 595         struct sk_buff *skb = urb->context;
 596         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 597         struct btusb_data *data = hdev->driver_data;
 598
 599         BT_DBG("%s urb %p status %d count %d", hdev->name,
 600                                         urb, urb->status, urb->actual_length);
 601
 602         if (!test_bit(HCI_RUNNING, &hdev->flags))
 603                 goto done;
 604
 605         if (!urb->status)
 606                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 607         else
 608                 hdev->stat.err_tx++;
 609
 610 done:
 611         spin_lock(&data->txlock);
 612         data->tx_in_flight--;
 613         spin_unlock(&data->txlock);
 614
 615         kfree(urb->setup_packet);
 616
 617         kfree_skb(skb);
 618 }
 619
 620 static void btusb_isoc_tx_complete(struct urb *urb)
 621 {
 622         struct sk_buff *skb = urb->context;
 623         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 624
 625         BT_DBG("%s urb %p status %d count %d", hdev->name,
 626                                         urb, urb->status, urb->actual_length);
 627
 628         if (!test_bit(HCI_RUNNING, &hdev->flags))
 629                 goto done;
 630
 631         if (!urb->status)
 632                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 633         else
 634                 hdev->stat.err_tx++;
 635
 636 done:
 637         kfree(urb->setup_packet);
 638
 639         kfree_skb(skb);
 640 }
 641
 642 static int btusb_open(struct hci_dev *hdev)
 643 {
 644         struct btusb_data *data = hdev->driver_data;
 645         int err;
 646
 647         BT_DBG("%s", hdev->name);
 648
 649         err = usb_autopm_get_interface(data->intf);
 650         if (err < 0)
 651                 return err;
 652
 653         data->intf->needs_remote_wakeup = 1;
 654
 655         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 656                 goto done;
 657
 658         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 659                 goto done;
 660
 661         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 662         if (err < 0)
 663                 goto failed;
 664
 665         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 666         if (err < 0) {
 667                 usb_kill_anchored_urbs(&data->intr_anchor);
 668                 goto failed;
 669         }
 670
 671         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 672         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 673
 674 done:
 675         usb_autopm_put_interface(data->intf);
 676         return 0;
 677
 678 failed:
 679         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 680         clear_bit(HCI_RUNNING, &hdev->flags);
 681         usb_autopm_put_interface(data->intf);
 682         return err;
 683 }
 684
 685 static void btusb_stop_traffic(struct btusb_data *data)
 686 {
 687         usb_kill_anchored_urbs(&data->intr_anchor);
 688         usb_kill_anchored_urbs(&data->bulk_anchor);
 689         usb_kill_anchored_urbs(&data->isoc_anchor);
 690 }
 691
 692 static int btusb_close(struct hci_dev *hdev)
 693 {
 694         struct btusb_data *data = hdev->driver_data;
 695         int err;
 696
 697         BT_DBG("%s", hdev->name);
 698
 699         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 700                 return 0;
 701
 702         cancel_work_sync(&data->work);
 703         cancel_work_sync(&data->waker);
 704
 705         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 706         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 707         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 708
 709         btusb_stop_traffic(data);
 710         err = usb_autopm_get_interface(data->intf);
 711         if (err < 0)
 712                 goto failed;
 713
 714         data->intf->needs_remote_wakeup = 0;
 715         usb_autopm_put_interface(data->intf);
 716
 717 failed:
 718         usb_scuttle_anchored_urbs(&data->deferred);
 719         return 0;
 720 }
 721
 722 static int btusb_flush(struct hci_dev *hdev)
 723 {
 724         struct btusb_data *data = hdev->driver_data;
 725
 726         BT_DBG("%s", hdev->name);
 727
 728         usb_kill_anchored_urbs(&data->tx_anchor);
 729
 730         return 0;
 731 }
 732
 733 static int btusb_send_frame(struct sk_buff *skb)
 734 {
 735         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 736         struct btusb_data *data = hdev->driver_data;
 737         struct usb_ctrlrequest *dr;
 738         struct urb *urb;
 739         unsigned int pipe;
 740         int err;
 741
 742         BT_DBG("%s", hdev->name);
 743
 744         if (!test_bit(HCI_RUNNING, &hdev->flags))
 745                 return -EBUSY;
 746
 747         switch (bt_cb(skb)->pkt_type) {
 748         case HCI_COMMAND_PKT:
 749                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 750                 if (!urb)
 751                         return -ENOMEM;
 752
 753                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 754                 if (!dr) {
 755                         usb_free_urb(urb);
 756                         return -ENOMEM;
 757                 }
 758
 759                 dr->bRequestType = data->cmdreq_type;
 760                 dr->bRequest     = 0;
 761                 dr->wIndex       = 0;
 762                 dr->wValue       = 0;
 763                 dr->wLength      = __cpu_to_le16(skb->len);
 764
 765                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 766
 767                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 768                                 skb->data, skb->len, btusb_tx_complete, skb);
 769
 770                 hdev->stat.cmd_tx++;
 771                 break;
 772
 773         case HCI_ACLDATA_PKT:
 774                 if (!data->bulk_tx_ep)
 775                         return -ENODEV;
 776
 777                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 778                 if (!urb)
 779                         return -ENOMEM;
 780
 781                 pipe = usb_sndbulkpipe(data->udev,
 782                                         data->bulk_tx_ep->bEndpointAddress);
 783
 784                 usb_fill_bulk_urb(urb, data->udev, pipe,
 785                                 skb->data, skb->len, btusb_tx_complete, skb);
 786
 787                 hdev->stat.acl_tx++;
 788                 break;
 789
 790         case HCI_SCODATA_PKT:
 791                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 792                         return -ENODEV;
 793
 794                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 795                 if (!urb)
 796                         return -ENOMEM;
 797
 798                 pipe = usb_sndisocpipe(data->udev,
 799                                         data->isoc_tx_ep->bEndpointAddress);
 800
 801                 usb_fill_int_urb(urb, data->udev, pipe,
 802                                 skb->data, skb->len, btusb_isoc_tx_complete,
 803                                 skb, data->isoc_tx_ep->bInterval);
 804
 805                 urb->transfer_flags  = URB_ISO_ASAP;
 806
 807                 __fill_isoc_descriptor(urb, skb->len,
 808                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 809
 810                 hdev->stat.sco_tx++;
 811                 goto skip_waking;
 812
 813         default:
 814                 return -EILSEQ;
 815         }
 816
 817         err = inc_tx(data);
 818         if (err) {
 819                 usb_anchor_urb(urb, &data->deferred);
 820                 schedule_work(&data->waker);
 821                 err = 0;
 822                 goto done;
 823         }
 824
 825 skip_waking:
 826         usb_anchor_urb(urb, &data->tx_anchor);
 827
 828         err = usb_submit_urb(urb, GFP_ATOMIC);
 829         if (err < 0) {
 830                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 831                 kfree(urb->setup_packet);
 832                 usb_unanchor_urb(urb);
 833         } else {
 834                 usb_mark_last_busy(data->udev);
 835         }
 836
 837 done:
 838         usb_free_urb(urb);
 839         return err;
 840 }
 841
 842 static void btusb_destruct(struct hci_dev *hdev)
 843 {
 844         struct btusb_data *data = hdev->driver_data;
 845
 846         BT_DBG("%s", hdev->name);
 847
 848         kfree(data);
 849 }
 850
 851 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 852 {
 853         struct btusb_data *data = hdev->driver_data;
 854
 855         BT_DBG("%s evt %d", hdev->name, evt);
 856
 857         if (hdev->conn_hash.sco_num != data->sco_num) {
 858                 data->sco_num = hdev->conn_hash.sco_num;
 859                 schedule_work(&data->work);
 860         }
 861 }
 862
 863 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 864 {
 865         struct btusb_data *data = hdev->driver_data;
 866         struct usb_interface *intf = data->isoc;
 867         struct usb_endpoint_descriptor *ep_desc;
 868         int i, err;
 869
 870         if (!data->isoc)
 871                 return -ENODEV;
 872
 873         err = usb_set_interface(data->udev, 1, altsetting);
 874         if (err < 0) {
 875                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 876                 return err;
 877         }
 878
 879         data->isoc_altsetting = altsetting;
 880
 881         data->isoc_tx_ep = NULL;
 882         data->isoc_rx_ep = NULL;
 883
 884         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 885                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 886
 887                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 888                         data->isoc_tx_ep = ep_desc;
 889                         continue;
 890                 }
 891
 892                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 893                         data->isoc_rx_ep = ep_desc;
 894                         continue;
 895                 }
 896         }
 897
 898         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 899                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 900                 return -ENODEV;
 901         }
 902
 903         return 0;
 904 }
 905
 906 static void btusb_work(struct work_struct *work)
 907 {
 908         struct btusb_data *data = container_of(work, struct btusb_data, work);
 909         struct hci_dev *hdev = data->hdev;
 910         int err;
 911
 912         if (hdev->conn_hash.sco_num > 0) {
 913                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 914                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 915                         if (err < 0) {
 916                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 917                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 918                                 return;
 919                         }
 920
 921                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 922                 }
 923                 if (data->isoc_altsetting != 2) {
 924                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 925                         usb_kill_anchored_urbs(&data->isoc_anchor);
 926
 927                         if (__set_isoc_interface(hdev, 2) < 0)
 928                                 return;
 929                 }
 930
 931                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 932                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 933                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 934                         else
 935                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 936                 }
 937         } else {
 938                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 939                 usb_kill_anchored_urbs(&data->isoc_anchor);
 940
 941                 __set_isoc_interface(hdev, 0);
 942                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 943                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 944         }
 945 }
 946
 947 static void btusb_waker(struct work_struct *work)
 948 {
 949         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 950         int err;
 951
 952         err = usb_autopm_get_interface(data->intf);
 953         if (err < 0)
 954                 return;
 955
 956         usb_autopm_put_interface(data->intf);
 957 }
 958
 959 static int btusb_probe(struct usb_interface *intf,
 960                                 const struct usb_device_id *id)
 961 {
 962         struct usb_endpoint_descriptor *ep_desc;
 963         struct btusb_data *data;
 964         struct hci_dev *hdev;
 965         int i, err;
 966
 967         BT_DBG("intf %p id %p", intf, id);
 968
 969         /* interface numbers are hardcoded in the spec */
 970         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 971                 return -ENODEV;
 972
 973         if (!id->driver_info) {
 974                 const struct usb_device_id *match;
 975                 match = usb_match_id(intf, blacklist_table);
 976                 if (match)
 977                         id = match;
 978         }
 979
 980         if (id->driver_info == BTUSB_IGNORE)
 981                 return -ENODEV;
 982
 983         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 984                 return -ENODEV;
 985
 986         if (ignore_csr && id->driver_info & BTUSB_CSR)
 987                 return -ENODEV;
 988
 989         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 990                 return -ENODEV;
 991
 992         if (id->driver_info & BTUSB_ATH3012) {
 993                 struct usb_device *udev = interface_to_usbdev(intf);
 994
 995                 /* Old firmware would otherwise let ath3k driver load
 996                  * patch and sysconfig files */
 997                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 998                         return -ENODEV;
 999         }
1000
1001         data = kzalloc(sizeof(*data), GFP_KERNEL);
1002         if (!data)
1003                 return -ENOMEM;
1004
1005         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1006                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1007
1008                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1009                         data->intr_ep = ep_desc;
1010                         continue;
1011                 }
1012
1013                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1014                         data->bulk_tx_ep = ep_desc;
1015                         continue;
1016                 }
1017
1018                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1019                         data->bulk_rx_ep = ep_desc;
1020                         continue;
1021                 }
1022         }
1023
1024         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
1025                 kfree(data);
1026                 return -ENODEV;
1027         }
1028
1029         data->cmdreq_type = USB_TYPE_CLASS;
1030
1031         data->udev = interface_to_usbdev(intf);
1032         data->intf = intf;
1033
1034         spin_lock_init(&data->lock);
1035
1036         INIT_WORK(&data->work, btusb_work);
1037         INIT_WORK(&data->waker, btusb_waker);
1038         spin_lock_init(&data->txlock);
1039
1040         init_usb_anchor(&data->tx_anchor);
1041         init_usb_anchor(&data->intr_anchor);
1042         init_usb_anchor(&data->bulk_anchor);
1043         init_usb_anchor(&data->isoc_anchor);
1044         init_usb_anchor(&data->deferred);
1045
1046         hdev = hci_alloc_dev();
1047         if (!hdev) {
1048                 kfree(data);
1049                 return -ENOMEM;
1050         }
1051
1052         hdev->bus = HCI_USB;
1053         hdev->driver_data = data;
1054
1055         data->hdev = hdev;
1056
1057         SET_HCIDEV_DEV(hdev, &intf->dev);
1058
1059         hdev->open     = btusb_open;
1060         hdev->close    = btusb_close;
1061         hdev->flush    = btusb_flush;
1062         hdev->send     = btusb_send_frame;
1063         hdev->destruct = btusb_destruct;
1064         hdev->notify   = btusb_notify;
1065
1066         hdev->owner = THIS_MODULE;
1067
1068         /* Interface numbers are hardcoded in the specification */
1069         data->isoc = usb_ifnum_to_if(data->udev, 1);
1070
1071         if (!reset)
1072                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1073
1074         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1075                 if (!disable_scofix)
1076                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1077         }
1078
1079         if (id->driver_info & BTUSB_BROKEN_ISOC)
1080                 data->isoc = NULL;
1081
1082         if (id->driver_info & BTUSB_DIGIANSWER) {
1083                 data->cmdreq_type = USB_TYPE_VENDOR;
1084                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1085         }
1086
1087         if (id->driver_info & BTUSB_CSR) {
1088                 struct usb_device *udev = data->udev;
1089
1090                 /* Old firmware would otherwise execute USB reset */
1091                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1092                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1093         }
1094
1095         if (id->driver_info & BTUSB_SNIFFER) {
1096                 struct usb_device *udev = data->udev;
1097
1098                 /* New sniffer firmware has crippled HCI interface */
1099                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1100                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1101
1102                 data->isoc = NULL;
1103         }
1104
1105         if (id->driver_info & BTUSB_BCM92035) {
1106                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1107                 struct sk_buff *skb;
1108
1109                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1110                 if (skb) {
1111                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1112                         skb_queue_tail(&hdev->driver_init, skb);
1113                 }
1114         }
1115
1116         if (data->isoc) {
1117                 err = usb_driver_claim_interface(&btusb_driver,
1118                                                         data->isoc, data);
1119                 if (err < 0) {
1120                         hci_free_dev(hdev);
1121                         kfree(data);
1122                         return err;
1123                 }
1124         }
1125
1126         err = hci_register_dev(hdev);
1127         if (err < 0) {
1128                 hci_free_dev(hdev);
1129                 kfree(data);
1130                 return err;
1131         }
1132
1133         usb_set_intfdata(intf, data);
1134
1135         return 0;
1136 }
1137
1138 static void btusb_disconnect(struct usb_interface *intf)
1139 {
1140         struct btusb_data *data = usb_get_intfdata(intf);
1141         struct hci_dev *hdev;
1142
1143         BT_DBG("intf %p", intf);
1144
1145         if (!data)
1146                 return;
1147
1148         hdev = data->hdev;
1149
1150         __hci_dev_hold(hdev);
1151
1152         usb_set_intfdata(data->intf, NULL);
1153
1154         if (data->isoc)
1155                 usb_set_intfdata(data->isoc, NULL);
1156
1157         hci_unregister_dev(hdev);
1158
1159         if (intf == data->isoc)
1160                 usb_driver_release_interface(&btusb_driver, data->intf);
1161         else if (data->isoc)
1162                 usb_driver_release_interface(&btusb_driver, data->isoc);
1163
1164         __hci_dev_put(hdev);
1165
1166         hci_free_dev(hdev);
1167 }
1168
1169 #ifdef CONFIG_PM
1170 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1171 {
1172         struct btusb_data *data = usb_get_intfdata(intf);
1173
1174         BT_DBG("intf %p", intf);
1175
1176         if (data->suspend_count++)
1177                 return 0;
1178
1179         spin_lock_irq(&data->txlock);
1180         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1181                 set_bit(BTUSB_SUSPENDING, &data->flags);
1182                 spin_unlock_irq(&data->txlock);
1183         } else {
1184                 spin_unlock_irq(&data->txlock);
1185                 data->suspend_count--;
1186                 return -EBUSY;
1187         }
1188
1189         cancel_work_sync(&data->work);
1190
1191         btusb_stop_traffic(data);
1192         usb_kill_anchored_urbs(&data->tx_anchor);
1193
1194         return 0;
1195 }
1196
1197 static void play_deferred(struct btusb_data *data)
1198 {
1199         struct urb *urb;
1200         int err;
1201
1202         while ((urb = usb_get_from_anchor(&data->deferred))) {
1203                 err = usb_submit_urb(urb, GFP_ATOMIC);
1204                 if (err < 0)
1205                         break;
1206
1207                 data->tx_in_flight++;
1208         }
1209         usb_scuttle_anchored_urbs(&data->deferred);
1210 }
1211
1212 static int btusb_resume(struct usb_interface *intf)
1213 {
1214         struct btusb_data *data = usb_get_intfdata(intf);
1215         struct hci_dev *hdev = data->hdev;
1216         int err = 0;
1217
1218         BT_DBG("intf %p", intf);
1219
1220         if (--data->suspend_count)
1221                 return 0;
1222
1223         if (!test_bit(HCI_RUNNING, &hdev->flags))
1224                 goto done;
1225
1226         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1227                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1228                 if (err < 0) {
1229                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1230                         goto failed;
1231                 }
1232         }
1233
1234         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1235                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1236                 if (err < 0) {
1237                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1238                         goto failed;
1239                 }
1240
1241                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1242         }
1243
1244         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1245                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1246                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1247                 else
1248                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1249         }
1250
1251         spin_lock_irq(&data->txlock);
1252         play_deferred(data);
1253         clear_bit(BTUSB_SUSPENDING, &data->flags);
1254         spin_unlock_irq(&data->txlock);
1255         schedule_work(&data->work);
1256
1257         return 0;
1258
1259 failed:
1260         usb_scuttle_anchored_urbs(&data->deferred);
1261 done:
1262         spin_lock_irq(&data->txlock);
1263         clear_bit(BTUSB_SUSPENDING, &data->flags);
1264         spin_unlock_irq(&data->txlock);
1265
1266         return err;
1267 }
1268 #endif
1269
1270 static struct usb_driver btusb_driver = {
1271         .name           = "btusb",
1272         .probe          = btusb_probe,
1273         .disconnect     = btusb_disconnect,
1274 #ifdef CONFIG_PM
1275         .suspend        = btusb_suspend,
1276         .resume         = btusb_resume,
1277 #endif
1278         .id_table       = btusb_table,
1279         .supports_autosuspend = 1,
1280 };
1281
1282 static int __init btusb_init(void)
1283 {
1284         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1285
1286         return usb_register(&btusb_driver);
1287 }
1288
1289 static void __exit btusb_exit(void)
1290 {
1291         usb_deregister(&btusb_driver);
1292 }
1293
1294 module_init(btusb_init);
1295 module_exit(btusb_exit);
1296
1297 module_param(ignore_dga, bool, 0644);
1298 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1299
1300 module_param(ignore_csr, bool, 0644);
1301 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1302
1303 module_param(ignore_sniffer, bool, 0644);
1304 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1305
1306 module_param(disable_scofix, bool, 0644);
1307 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1308
1309 module_param(force_scofix, bool, 0644);
1310 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1311
1312 module_param(reset, bool, 0644);
1313 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1314
1315 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1316 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1317 MODULE_VERSION(VERSION);
1318 MODULE_LICENSE("GPL");