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, 0x311f), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 178
 179         /* Atheros AR5BBU12 with sflash firmware */
 180         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 181
 182         /* Atheros AR5BBU12 with sflash firmware */
 183         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 185
 186         /* Broadcom BCM2035 */
 187         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 188         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 189         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 190
 191         /* Broadcom BCM2045 */
 192         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 193         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 194
 195         /* IBM/Lenovo ThinkPad with Broadcom chip */
 196         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 197         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 198
 199         /* HP laptop with Broadcom chip */
 200         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 201
 202         /* Dell laptop with Broadcom chip */
 203         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 204
 205         /* Dell Wireless 370 and 410 devices */
 206         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 207         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 208
 209         /* Belkin F8T012 and F8T013 devices */
 210         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 211         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 212
 213         /* Asus WL-BTD202 device */
 214         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 215
 216         /* Kensington Bluetooth USB adapter */
 217         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 218
 219         /* RTX Telecom based adapters with buggy SCO support */
 220         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 221         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 222
 223         /* CONWISE Technology based adapters with buggy SCO support */
 224         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 225
 226         /* Digianswer devices */
 227         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 228         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 229
 230         /* CSR BlueCore Bluetooth Sniffer */
 231         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 232
 233         /* Frontline ComProbe Bluetooth Sniffer */
 234         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 235
 236         { }     /* Terminating entry */
 237 };
 238
 239 #define BTUSB_MAX_ISOC_FRAMES   10
 240
 241 #define BTUSB_INTR_RUNNING      0
 242 #define BTUSB_BULK_RUNNING      1
 243 #define BTUSB_ISOC_RUNNING      2
 244 #define BTUSB_SUSPENDING        3
 245 #define BTUSB_DID_ISO_RESUME    4
 246
 247 struct btusb_data {
 248         struct hci_dev       *hdev;
 249         struct usb_device    *udev;
 250         struct usb_interface *intf;
 251         struct usb_interface *isoc;
 252
 253         spinlock_t lock;
 254
 255         unsigned long flags;
 256
 257         struct work_struct work;
 258         struct work_struct waker;
 259
 260         struct usb_anchor tx_anchor;
 261         struct usb_anchor intr_anchor;
 262         struct usb_anchor bulk_anchor;
 263         struct usb_anchor isoc_anchor;
 264         struct usb_anchor deferred;
 265         int tx_in_flight;
 266         spinlock_t txlock;
 267
 268         struct usb_endpoint_descriptor *intr_ep;
 269         struct usb_endpoint_descriptor *bulk_tx_ep;
 270         struct usb_endpoint_descriptor *bulk_rx_ep;
 271         struct usb_endpoint_descriptor *isoc_tx_ep;
 272         struct usb_endpoint_descriptor *isoc_rx_ep;
 273
 274         __u8 cmdreq_type;
 275
 276         unsigned int sco_num;
 277         int isoc_altsetting;
 278         int suspend_count;
 279 };
 280
 281 static int inc_tx(struct btusb_data *data)
 282 {
 283         unsigned long flags;
 284         int rv;
 285
 286         spin_lock_irqsave(&data->txlock, flags);
 287         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 288         if (!rv)
 289                 data->tx_in_flight++;
 290         spin_unlock_irqrestore(&data->txlock, flags);
 291
 292         return rv;
 293 }
 294
 295 static void btusb_intr_complete(struct urb *urb)
 296 {
 297         struct hci_dev *hdev = urb->context;
 298         struct btusb_data *data = hdev->driver_data;
 299         int err;
 300
 301         BT_DBG("%s urb %p status %d count %d", hdev->name,
 302                                         urb, urb->status, urb->actual_length);
 303
 304         if (!test_bit(HCI_RUNNING, &hdev->flags))
 305                 return;
 306
 307         if (urb->status == 0) {
 308                 hdev->stat.byte_rx += urb->actual_length;
 309
 310                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 311                                                 urb->transfer_buffer,
 312                                                 urb->actual_length) < 0) {
 313                         BT_ERR("%s corrupted event packet", hdev->name);
 314                         hdev->stat.err_rx++;
 315                 }
 316         } else if (urb->status == -ENOENT) {
 317                 /* Avoid suspend failed when usb_kill_urb */
 318                 return;
 319         }
 320
 321         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 322                 return;
 323
 324         usb_mark_last_busy(data->udev);
 325         usb_anchor_urb(urb, &data->intr_anchor);
 326
 327         err = usb_submit_urb(urb, GFP_ATOMIC);
 328         if (err < 0) {
 329                 /* -EPERM: urb is being killed;
 330                  * -ENODEV: device got disconnected */
 331                 if (err != -EPERM && err != -ENODEV)
 332                         BT_ERR("%s urb %p failed to resubmit (%d)",
 333                                                 hdev->name, urb, -err);
 334                 usb_unanchor_urb(urb);
 335         }
 336 }
 337
 338 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 339 {
 340         struct btusb_data *data = hdev->driver_data;
 341         struct urb *urb;
 342         unsigned char *buf;
 343         unsigned int pipe;
 344         int err, size;
 345
 346         BT_DBG("%s", hdev->name);
 347
 348         if (!data->intr_ep)
 349                 return -ENODEV;
 350
 351         urb = usb_alloc_urb(0, mem_flags);
 352         if (!urb)
 353                 return -ENOMEM;
 354
 355         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 356
 357         buf = kmalloc(size, mem_flags);
 358         if (!buf) {
 359                 usb_free_urb(urb);
 360                 return -ENOMEM;
 361         }
 362
 363         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 364
 365         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 366                                                 btusb_intr_complete, hdev,
 367                                                 data->intr_ep->bInterval);
 368
 369         urb->transfer_flags |= URB_FREE_BUFFER;
 370
 371         usb_anchor_urb(urb, &data->intr_anchor);
 372
 373         err = usb_submit_urb(urb, mem_flags);
 374         if (err < 0) {
 375                 BT_ERR("%s urb %p submission failed (%d)",
 376                                                 hdev->name, urb, -err);
 377                 usb_unanchor_urb(urb);
 378         }
 379
 380         usb_free_urb(urb);
 381
 382         return err;
 383 }
 384
 385 static void btusb_bulk_complete(struct urb *urb)
 386 {
 387         struct hci_dev *hdev = urb->context;
 388         struct btusb_data *data = hdev->driver_data;
 389         int err;
 390
 391         BT_DBG("%s urb %p status %d count %d", hdev->name,
 392                                         urb, urb->status, urb->actual_length);
 393
 394         if (!test_bit(HCI_RUNNING, &hdev->flags))
 395                 return;
 396
 397         if (urb->status == 0) {
 398                 hdev->stat.byte_rx += urb->actual_length;
 399
 400                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 401                                                 urb->transfer_buffer,
 402                                                 urb->actual_length) < 0) {
 403                         BT_ERR("%s corrupted ACL packet", hdev->name);
 404                         hdev->stat.err_rx++;
 405                 }
 406         } else if (urb->status == -ENOENT) {
 407                 /* Avoid suspend failed when usb_kill_urb */
 408                 return;
 409         }
 410
 411         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 412                 return;
 413
 414         usb_anchor_urb(urb, &data->bulk_anchor);
 415         usb_mark_last_busy(data->udev);
 416
 417         err = usb_submit_urb(urb, GFP_ATOMIC);
 418         if (err < 0) {
 419                 /* -EPERM: urb is being killed;
 420                  * -ENODEV: device got disconnected */
 421                 if (err != -EPERM && err != -ENODEV)
 422                         BT_ERR("%s urb %p failed to resubmit (%d)",
 423                                                 hdev->name, urb, -err);
 424                 usb_unanchor_urb(urb);
 425         }
 426 }
 427
 428 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 429 {
 430         struct btusb_data *data = hdev->driver_data;
 431         struct urb *urb;
 432         unsigned char *buf;
 433         unsigned int pipe;
 434         int err, size = HCI_MAX_FRAME_SIZE;
 435
 436         BT_DBG("%s", hdev->name);
 437
 438         if (!data->bulk_rx_ep)
 439                 return -ENODEV;
 440
 441         urb = usb_alloc_urb(0, mem_flags);
 442         if (!urb)
 443                 return -ENOMEM;
 444
 445         buf = kmalloc(size, mem_flags);
 446         if (!buf) {
 447                 usb_free_urb(urb);
 448                 return -ENOMEM;
 449         }
 450
 451         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 452
 453         usb_fill_bulk_urb(urb, data->udev, pipe,
 454                                         buf, size, btusb_bulk_complete, hdev);
 455
 456         urb->transfer_flags |= URB_FREE_BUFFER;
 457
 458         usb_mark_last_busy(data->udev);
 459         usb_anchor_urb(urb, &data->bulk_anchor);
 460
 461         err = usb_submit_urb(urb, mem_flags);
 462         if (err < 0) {
 463                 BT_ERR("%s urb %p submission failed (%d)",
 464                                                 hdev->name, urb, -err);
 465                 usb_unanchor_urb(urb);
 466         }
 467
 468         usb_free_urb(urb);
 469
 470         return err;
 471 }
 472
 473 static void btusb_isoc_complete(struct urb *urb)
 474 {
 475         struct hci_dev *hdev = urb->context;
 476         struct btusb_data *data = hdev->driver_data;
 477         int i, err;
 478
 479         BT_DBG("%s urb %p status %d count %d", hdev->name,
 480                                         urb, urb->status, urb->actual_length);
 481
 482         if (!test_bit(HCI_RUNNING, &hdev->flags))
 483                 return;
 484
 485         if (urb->status == 0) {
 486                 for (i = 0; i < urb->number_of_packets; i++) {
 487                         unsigned int offset = urb->iso_frame_desc[i].offset;
 488                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 489
 490                         if (urb->iso_frame_desc[i].status)
 491                                 continue;
 492
 493                         hdev->stat.byte_rx += length;
 494
 495                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 496                                                 urb->transfer_buffer + offset,
 497                                                                 length) < 0) {
 498                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 499                                 hdev->stat.err_rx++;
 500                         }
 501                 }
 502         } else if (urb->status == -ENOENT) {
 503                 /* Avoid suspend failed when usb_kill_urb */
 504                 return;
 505         }
 506
 507         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 508                 return;
 509
 510         usb_anchor_urb(urb, &data->isoc_anchor);
 511
 512         err = usb_submit_urb(urb, GFP_ATOMIC);
 513         if (err < 0) {
 514                 /* -EPERM: urb is being killed;
 515                  * -ENODEV: device got disconnected */
 516                 if (err != -EPERM && err != -ENODEV)
 517                         BT_ERR("%s urb %p failed to resubmit (%d)",
 518                                                 hdev->name, urb, -err);
 519                 usb_unanchor_urb(urb);
 520         }
 521 }
 522
 523 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 524 {
 525         int i, offset = 0;
 526
 527         BT_DBG("len %d mtu %d", len, mtu);
 528
 529         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 530                                         i++, offset += mtu, len -= mtu) {
 531                 urb->iso_frame_desc[i].offset = offset;
 532                 urb->iso_frame_desc[i].length = mtu;
 533         }
 534
 535         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 536                 urb->iso_frame_desc[i].offset = offset;
 537                 urb->iso_frame_desc[i].length = len;
 538                 i++;
 539         }
 540
 541         urb->number_of_packets = i;
 542 }
 543
 544 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 545 {
 546         struct btusb_data *data = hdev->driver_data;
 547         struct urb *urb;
 548         unsigned char *buf;
 549         unsigned int pipe;
 550         int err, size;
 551
 552         BT_DBG("%s", hdev->name);
 553
 554         if (!data->isoc_rx_ep)
 555                 return -ENODEV;
 556
 557         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 558         if (!urb)
 559                 return -ENOMEM;
 560
 561         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 562                                                 BTUSB_MAX_ISOC_FRAMES;
 563
 564         buf = kmalloc(size, mem_flags);
 565         if (!buf) {
 566                 usb_free_urb(urb);
 567                 return -ENOMEM;
 568         }
 569
 570         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 571
 572         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 573                                 hdev, data->isoc_rx_ep->bInterval);
 574
 575         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 576
 577         __fill_isoc_descriptor(urb, size,
 578                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 579
 580         usb_anchor_urb(urb, &data->isoc_anchor);
 581
 582         err = usb_submit_urb(urb, mem_flags);
 583         if (err < 0) {
 584                 BT_ERR("%s urb %p submission failed (%d)",
 585                                                 hdev->name, urb, -err);
 586                 usb_unanchor_urb(urb);
 587         }
 588
 589         usb_free_urb(urb);
 590
 591         return err;
 592 }
 593
 594 static void btusb_tx_complete(struct urb *urb)
 595 {
 596         struct sk_buff *skb = urb->context;
 597         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 598         struct btusb_data *data = hdev->driver_data;
 599
 600         BT_DBG("%s urb %p status %d count %d", hdev->name,
 601                                         urb, urb->status, urb->actual_length);
 602
 603         if (!test_bit(HCI_RUNNING, &hdev->flags))
 604                 goto done;
 605
 606         if (!urb->status)
 607                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 608         else
 609                 hdev->stat.err_tx++;
 610
 611 done:
 612         spin_lock(&data->txlock);
 613         data->tx_in_flight--;
 614         spin_unlock(&data->txlock);
 615
 616         kfree(urb->setup_packet);
 617
 618         kfree_skb(skb);
 619 }
 620
 621 static void btusb_isoc_tx_complete(struct urb *urb)
 622 {
 623         struct sk_buff *skb = urb->context;
 624         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 625
 626         BT_DBG("%s urb %p status %d count %d", hdev->name,
 627                                         urb, urb->status, urb->actual_length);
 628
 629         if (!test_bit(HCI_RUNNING, &hdev->flags))
 630                 goto done;
 631
 632         if (!urb->status)
 633                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 634         else
 635                 hdev->stat.err_tx++;
 636
 637 done:
 638         kfree(urb->setup_packet);
 639
 640         kfree_skb(skb);
 641 }
 642
 643 static int btusb_open(struct hci_dev *hdev)
 644 {
 645         struct btusb_data *data = hdev->driver_data;
 646         int err;
 647
 648         BT_DBG("%s", hdev->name);
 649
 650         err = usb_autopm_get_interface(data->intf);
 651         if (err < 0)
 652                 return err;
 653
 654         data->intf->needs_remote_wakeup = 1;
 655
 656         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 657                 goto done;
 658
 659         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 660                 goto done;
 661
 662         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 663         if (err < 0)
 664                 goto failed;
 665
 666         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 667         if (err < 0) {
 668                 usb_kill_anchored_urbs(&data->intr_anchor);
 669                 goto failed;
 670         }
 671
 672         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 673         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 674
 675 done:
 676         usb_autopm_put_interface(data->intf);
 677         return 0;
 678
 679 failed:
 680         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 681         clear_bit(HCI_RUNNING, &hdev->flags);
 682         usb_autopm_put_interface(data->intf);
 683         return err;
 684 }
 685
 686 static void btusb_stop_traffic(struct btusb_data *data)
 687 {
 688         usb_kill_anchored_urbs(&data->intr_anchor);
 689         usb_kill_anchored_urbs(&data->bulk_anchor);
 690         usb_kill_anchored_urbs(&data->isoc_anchor);
 691 }
 692
 693 static int btusb_close(struct hci_dev *hdev)
 694 {
 695         struct btusb_data *data = hdev->driver_data;
 696         int err;
 697
 698         BT_DBG("%s", hdev->name);
 699
 700         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 701                 return 0;
 702
 703         cancel_work_sync(&data->work);
 704         cancel_work_sync(&data->waker);
 705
 706         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 707         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 708         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 709
 710         btusb_stop_traffic(data);
 711         err = usb_autopm_get_interface(data->intf);
 712         if (err < 0)
 713                 goto failed;
 714
 715         data->intf->needs_remote_wakeup = 0;
 716         usb_autopm_put_interface(data->intf);
 717
 718 failed:
 719         usb_scuttle_anchored_urbs(&data->deferred);
 720         return 0;
 721 }
 722
 723 static int btusb_flush(struct hci_dev *hdev)
 724 {
 725         struct btusb_data *data = hdev->driver_data;
 726
 727         BT_DBG("%s", hdev->name);
 728
 729         usb_kill_anchored_urbs(&data->tx_anchor);
 730
 731         return 0;
 732 }
 733
 734 static int btusb_send_frame(struct sk_buff *skb)
 735 {
 736         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 737         struct btusb_data *data = hdev->driver_data;
 738         struct usb_ctrlrequest *dr;
 739         struct urb *urb;
 740         unsigned int pipe;
 741         int err;
 742
 743         BT_DBG("%s", hdev->name);
 744
 745         if (!test_bit(HCI_RUNNING, &hdev->flags))
 746                 return -EBUSY;
 747
 748         switch (bt_cb(skb)->pkt_type) {
 749         case HCI_COMMAND_PKT:
 750                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 751                 if (!urb)
 752                         return -ENOMEM;
 753
 754                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 755                 if (!dr) {
 756                         usb_free_urb(urb);
 757                         return -ENOMEM;
 758                 }
 759
 760                 dr->bRequestType = data->cmdreq_type;
 761                 dr->bRequest     = 0;
 762                 dr->wIndex       = 0;
 763                 dr->wValue       = 0;
 764                 dr->wLength      = __cpu_to_le16(skb->len);
 765
 766                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 767
 768                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 769                                 skb->data, skb->len, btusb_tx_complete, skb);
 770
 771                 hdev->stat.cmd_tx++;
 772                 break;
 773
 774         case HCI_ACLDATA_PKT:
 775                 if (!data->bulk_tx_ep)
 776                         return -ENODEV;
 777
 778                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 779                 if (!urb)
 780                         return -ENOMEM;
 781
 782                 pipe = usb_sndbulkpipe(data->udev,
 783                                         data->bulk_tx_ep->bEndpointAddress);
 784
 785                 usb_fill_bulk_urb(urb, data->udev, pipe,
 786                                 skb->data, skb->len, btusb_tx_complete, skb);
 787
 788                 hdev->stat.acl_tx++;
 789                 break;
 790
 791         case HCI_SCODATA_PKT:
 792                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 793                         return -ENODEV;
 794
 795                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 796                 if (!urb)
 797                         return -ENOMEM;
 798
 799                 pipe = usb_sndisocpipe(data->udev,
 800                                         data->isoc_tx_ep->bEndpointAddress);
 801
 802                 usb_fill_int_urb(urb, data->udev, pipe,
 803                                 skb->data, skb->len, btusb_isoc_tx_complete,
 804                                 skb, data->isoc_tx_ep->bInterval);
 805
 806                 urb->transfer_flags  = URB_ISO_ASAP;
 807
 808                 __fill_isoc_descriptor(urb, skb->len,
 809                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 810
 811                 hdev->stat.sco_tx++;
 812                 goto skip_waking;
 813
 814         default:
 815                 return -EILSEQ;
 816         }
 817
 818         err = inc_tx(data);
 819         if (err) {
 820                 usb_anchor_urb(urb, &data->deferred);
 821                 schedule_work(&data->waker);
 822                 err = 0;
 823                 goto done;
 824         }
 825
 826 skip_waking:
 827         usb_anchor_urb(urb, &data->tx_anchor);
 828
 829         err = usb_submit_urb(urb, GFP_ATOMIC);
 830         if (err < 0) {
 831                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 832                 kfree(urb->setup_packet);
 833                 usb_unanchor_urb(urb);
 834         } else {
 835                 usb_mark_last_busy(data->udev);
 836         }
 837
 838 done:
 839         usb_free_urb(urb);
 840         return err;
 841 }
 842
 843 static void btusb_destruct(struct hci_dev *hdev)
 844 {
 845         struct btusb_data *data = hdev->driver_data;
 846
 847         BT_DBG("%s", hdev->name);
 848
 849         kfree(data);
 850 }
 851
 852 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 853 {
 854         struct btusb_data *data = hdev->driver_data;
 855
 856         BT_DBG("%s evt %d", hdev->name, evt);
 857
 858         if (hdev->conn_hash.sco_num != data->sco_num) {
 859                 data->sco_num = hdev->conn_hash.sco_num;
 860                 schedule_work(&data->work);
 861         }
 862 }
 863
 864 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 865 {
 866         struct btusb_data *data = hdev->driver_data;
 867         struct usb_interface *intf = data->isoc;
 868         struct usb_endpoint_descriptor *ep_desc;
 869         int i, err;
 870
 871         if (!data->isoc)
 872                 return -ENODEV;
 873
 874         err = usb_set_interface(data->udev, 1, altsetting);
 875         if (err < 0) {
 876                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 877                 return err;
 878         }
 879
 880         data->isoc_altsetting = altsetting;
 881
 882         data->isoc_tx_ep = NULL;
 883         data->isoc_rx_ep = NULL;
 884
 885         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 886                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 887
 888                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 889                         data->isoc_tx_ep = ep_desc;
 890                         continue;
 891                 }
 892
 893                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 894                         data->isoc_rx_ep = ep_desc;
 895                         continue;
 896                 }
 897         }
 898
 899         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 900                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 901                 return -ENODEV;
 902         }
 903
 904         return 0;
 905 }
 906
 907 static void btusb_work(struct work_struct *work)
 908 {
 909         struct btusb_data *data = container_of(work, struct btusb_data, work);
 910         struct hci_dev *hdev = data->hdev;
 911         int err;
 912
 913         if (hdev->conn_hash.sco_num > 0) {
 914                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 915                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 916                         if (err < 0) {
 917                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 918                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 919                                 return;
 920                         }
 921
 922                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 923                 }
 924                 if (data->isoc_altsetting != 2) {
 925                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 926                         usb_kill_anchored_urbs(&data->isoc_anchor);
 927
 928                         if (__set_isoc_interface(hdev, 2) < 0)
 929                                 return;
 930                 }
 931
 932                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 933                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 934                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 935                         else
 936                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 937                 }
 938         } else {
 939                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 940                 usb_kill_anchored_urbs(&data->isoc_anchor);
 941
 942                 __set_isoc_interface(hdev, 0);
 943                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 944                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 945         }
 946 }
 947
 948 static void btusb_waker(struct work_struct *work)
 949 {
 950         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 951         int err;
 952
 953         err = usb_autopm_get_interface(data->intf);
 954         if (err < 0)
 955                 return;
 956
 957         usb_autopm_put_interface(data->intf);
 958 }
 959
 960 static int btusb_probe(struct usb_interface *intf,
 961                                 const struct usb_device_id *id)
 962 {
 963         struct usb_endpoint_descriptor *ep_desc;
 964         struct btusb_data *data;
 965         struct hci_dev *hdev;
 966         int i, err;
 967
 968         BT_DBG("intf %p id %p", intf, id);
 969
 970         /* interface numbers are hardcoded in the spec */
 971         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 972                 return -ENODEV;
 973
 974         if (!id->driver_info) {
 975                 const struct usb_device_id *match;
 976                 match = usb_match_id(intf, blacklist_table);
 977                 if (match)
 978                         id = match;
 979         }
 980
 981         if (id->driver_info == BTUSB_IGNORE)
 982                 return -ENODEV;
 983
 984         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 985                 return -ENODEV;
 986
 987         if (ignore_csr && id->driver_info & BTUSB_CSR)
 988                 return -ENODEV;
 989
 990         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 991                 return -ENODEV;
 992
 993         if (id->driver_info & BTUSB_ATH3012) {
 994                 struct usb_device *udev = interface_to_usbdev(intf);
 995
 996                 /* Old firmware would otherwise let ath3k driver load
 997                  * patch and sysconfig files */
 998                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 999                         return -ENODEV;
1000         }
1001
1002         data = kzalloc(sizeof(*data), GFP_KERNEL);
1003         if (!data)
1004                 return -ENOMEM;
1005
1006         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1007                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1008
1009                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1010                         data->intr_ep = ep_desc;
1011                         continue;
1012                 }
1013
1014                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1015                         data->bulk_tx_ep = ep_desc;
1016                         continue;
1017                 }
1018
1019                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1020                         data->bulk_rx_ep = ep_desc;
1021                         continue;
1022                 }
1023         }
1024
1025         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
1026                 kfree(data);
1027                 return -ENODEV;
1028         }
1029
1030         data->cmdreq_type = USB_TYPE_CLASS;
1031
1032         data->udev = interface_to_usbdev(intf);
1033         data->intf = intf;
1034
1035         spin_lock_init(&data->lock);
1036
1037         INIT_WORK(&data->work, btusb_work);
1038         INIT_WORK(&data->waker, btusb_waker);
1039         spin_lock_init(&data->txlock);
1040
1041         init_usb_anchor(&data->tx_anchor);
1042         init_usb_anchor(&data->intr_anchor);
1043         init_usb_anchor(&data->bulk_anchor);
1044         init_usb_anchor(&data->isoc_anchor);
1045         init_usb_anchor(&data->deferred);
1046
1047         hdev = hci_alloc_dev();
1048         if (!hdev) {
1049                 kfree(data);
1050                 return -ENOMEM;
1051         }
1052
1053         hdev->bus = HCI_USB;
1054         hdev->driver_data = data;
1055
1056         data->hdev = hdev;
1057
1058         SET_HCIDEV_DEV(hdev, &intf->dev);
1059
1060         hdev->open     = btusb_open;
1061         hdev->close    = btusb_close;
1062         hdev->flush    = btusb_flush;
1063         hdev->send     = btusb_send_frame;
1064         hdev->destruct = btusb_destruct;
1065         hdev->notify   = btusb_notify;
1066
1067         hdev->owner = THIS_MODULE;
1068
1069         /* Interface numbers are hardcoded in the specification */
1070         data->isoc = usb_ifnum_to_if(data->udev, 1);
1071
1072         if (!reset)
1073                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1074
1075         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1076                 if (!disable_scofix)
1077                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1078         }
1079
1080         if (id->driver_info & BTUSB_BROKEN_ISOC)
1081                 data->isoc = NULL;
1082
1083         if (id->driver_info & BTUSB_DIGIANSWER) {
1084                 data->cmdreq_type = USB_TYPE_VENDOR;
1085                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1086         }
1087
1088         if (id->driver_info & BTUSB_CSR) {
1089                 struct usb_device *udev = data->udev;
1090
1091                 /* Old firmware would otherwise execute USB reset */
1092                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1093                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1094         }
1095
1096         if (id->driver_info & BTUSB_SNIFFER) {
1097                 struct usb_device *udev = data->udev;
1098
1099                 /* New sniffer firmware has crippled HCI interface */
1100                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1101                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1102
1103                 data->isoc = NULL;
1104         }
1105
1106         if (id->driver_info & BTUSB_BCM92035) {
1107                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1108                 struct sk_buff *skb;
1109
1110                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1111                 if (skb) {
1112                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1113                         skb_queue_tail(&hdev->driver_init, skb);
1114                 }
1115         }
1116
1117         if (data->isoc) {
1118                 err = usb_driver_claim_interface(&btusb_driver,
1119                                                         data->isoc, data);
1120                 if (err < 0) {
1121                         hci_free_dev(hdev);
1122                         kfree(data);
1123                         return err;
1124                 }
1125         }
1126
1127         err = hci_register_dev(hdev);
1128         if (err < 0) {
1129                 hci_free_dev(hdev);
1130                 kfree(data);
1131                 return err;
1132         }
1133
1134         usb_set_intfdata(intf, data);
1135
1136         return 0;
1137 }
1138
1139 static void btusb_disconnect(struct usb_interface *intf)
1140 {
1141         struct btusb_data *data = usb_get_intfdata(intf);
1142         struct hci_dev *hdev;
1143
1144         BT_DBG("intf %p", intf);
1145
1146         if (!data)
1147                 return;
1148
1149         hdev = data->hdev;
1150
1151         __hci_dev_hold(hdev);
1152
1153         usb_set_intfdata(data->intf, NULL);
1154
1155         if (data->isoc)
1156                 usb_set_intfdata(data->isoc, NULL);
1157
1158         hci_unregister_dev(hdev);
1159
1160         if (intf == data->isoc)
1161                 usb_driver_release_interface(&btusb_driver, data->intf);
1162         else if (data->isoc)
1163                 usb_driver_release_interface(&btusb_driver, data->isoc);
1164
1165         __hci_dev_put(hdev);
1166
1167         hci_free_dev(hdev);
1168 }
1169
1170 #ifdef CONFIG_PM
1171 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1172 {
1173         struct btusb_data *data = usb_get_intfdata(intf);
1174
1175         BT_DBG("intf %p", intf);
1176
1177         if (data->suspend_count++)
1178                 return 0;
1179
1180         spin_lock_irq(&data->txlock);
1181         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1182                 set_bit(BTUSB_SUSPENDING, &data->flags);
1183                 spin_unlock_irq(&data->txlock);
1184         } else {
1185                 spin_unlock_irq(&data->txlock);
1186                 data->suspend_count--;
1187                 return -EBUSY;
1188         }
1189
1190         cancel_work_sync(&data->work);
1191
1192         btusb_stop_traffic(data);
1193         usb_kill_anchored_urbs(&data->tx_anchor);
1194
1195         return 0;
1196 }
1197
1198 static void play_deferred(struct btusb_data *data)
1199 {
1200         struct urb *urb;
1201         int err;
1202
1203         while ((urb = usb_get_from_anchor(&data->deferred))) {
1204                 err = usb_submit_urb(urb, GFP_ATOMIC);
1205                 if (err < 0)
1206                         break;
1207
1208                 data->tx_in_flight++;
1209         }
1210         usb_scuttle_anchored_urbs(&data->deferred);
1211 }
1212
1213 static int btusb_resume(struct usb_interface *intf)
1214 {
1215         struct btusb_data *data = usb_get_intfdata(intf);
1216         struct hci_dev *hdev = data->hdev;
1217         int err = 0;
1218
1219         BT_DBG("intf %p", intf);
1220
1221         if (--data->suspend_count)
1222                 return 0;
1223
1224         if (!test_bit(HCI_RUNNING, &hdev->flags))
1225                 goto done;
1226
1227         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1228                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1229                 if (err < 0) {
1230                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1231                         goto failed;
1232                 }
1233         }
1234
1235         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1236                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1237                 if (err < 0) {
1238                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1239                         goto failed;
1240                 }
1241
1242                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1243         }
1244
1245         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1246                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1247                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1248                 else
1249                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1250         }
1251
1252         spin_lock_irq(&data->txlock);
1253         play_deferred(data);
1254         clear_bit(BTUSB_SUSPENDING, &data->flags);
1255         spin_unlock_irq(&data->txlock);
1256         schedule_work(&data->work);
1257
1258         return 0;
1259
1260 failed:
1261         usb_scuttle_anchored_urbs(&data->deferred);
1262 done:
1263         spin_lock_irq(&data->txlock);
1264         clear_bit(BTUSB_SUSPENDING, &data->flags);
1265         spin_unlock_irq(&data->txlock);
1266
1267         return err;
1268 }
1269 #endif
1270
1271 static struct usb_driver btusb_driver = {
1272         .name           = "btusb",
1273         .probe          = btusb_probe,
1274         .disconnect     = btusb_disconnect,
1275 #ifdef CONFIG_PM
1276         .suspend        = btusb_suspend,
1277         .resume         = btusb_resume,
1278 #endif
1279         .id_table       = btusb_table,
1280         .supports_autosuspend = 1,
1281 };
1282
1283 static int __init btusb_init(void)
1284 {
1285         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1286
1287         return usb_register(&btusb_driver);
1288 }
1289
1290 static void __exit btusb_exit(void)
1291 {
1292         usb_deregister(&btusb_driver);
1293 }
1294
1295 module_init(btusb_init);
1296 module_exit(btusb_exit);
1297
1298 module_param(ignore_dga, bool, 0644);
1299 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1300
1301 module_param(ignore_csr, bool, 0644);
1302 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1303
1304 module_param(ignore_sniffer, bool, 0644);
1305 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1306
1307 module_param(disable_scofix, bool, 0644);
1308 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1309
1310 module_param(force_scofix, bool, 0644);
1311 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1312
1313 module_param(reset, bool, 0644);
1314 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1315
1316 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1317 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1318 MODULE_VERSION(VERSION);
1319 MODULE_LICENSE("GPL");