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(0x0489, 0xe042) },
 111         { USB_DEVICE(0x04ca, 0x2003) },
 112         { USB_DEVICE(0x0b05, 0x17b5) },
 113         { USB_DEVICE(0x0b05, 0x17cb) },
 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         /* IMC Networks - Broadcom based */
 126         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 127
 128         { }     /* Terminating entry */
 129 };
 130
 131 MODULE_DEVICE_TABLE(usb, btusb_table);
 132
 133 static struct usb_device_id blacklist_table[] = {
 134         /* CSR BlueCore devices */
 135         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 136
 137         /* Broadcom BCM2033 without firmware */
 138         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 139
 140         /* Atheros 3011 with sflash firmware */
 141         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 142         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 143         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 144         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 145         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 146         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 147
 148         /* Atheros AR9285 Malbec with sflash firmware */
 149         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 150
 151         /* Atheros 3012 with sflash firmware */
 152         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 181
 182         /* Atheros AR5BBU12 with sflash firmware */
 183         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 184
 185         /* Atheros AR5BBU12 with sflash firmware */
 186         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 188
 189         /* Broadcom BCM2035 */
 190         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 191         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 192         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 193
 194         /* Broadcom BCM2045 */
 195         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 196         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 197
 198         /* IBM/Lenovo ThinkPad with Broadcom chip */
 199         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 200         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 201
 202         /* HP laptop with Broadcom chip */
 203         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 204
 205         /* Dell laptop with Broadcom chip */
 206         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 207
 208         /* Dell Wireless 370 and 410 devices */
 209         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 210         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 211
 212         /* Belkin F8T012 and F8T013 devices */
 213         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 214         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 215
 216         /* Asus WL-BTD202 device */
 217         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 218
 219         /* Kensington Bluetooth USB adapter */
 220         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 221
 222         /* RTX Telecom based adapters with buggy SCO support */
 223         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 224         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 225
 226         /* CONWISE Technology based adapters with buggy SCO support */
 227         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 228
 229         /* Digianswer devices */
 230         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 231         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 232
 233         /* CSR BlueCore Bluetooth Sniffer */
 234         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 235
 236         /* Frontline ComProbe Bluetooth Sniffer */
 237         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 238
 239         { }     /* Terminating entry */
 240 };
 241
 242 #define BTUSB_MAX_ISOC_FRAMES   10
 243
 244 #define BTUSB_INTR_RUNNING      0
 245 #define BTUSB_BULK_RUNNING      1
 246 #define BTUSB_ISOC_RUNNING      2
 247 #define BTUSB_SUSPENDING        3
 248 #define BTUSB_DID_ISO_RESUME    4
 249
 250 struct btusb_data {
 251         struct hci_dev       *hdev;
 252         struct usb_device    *udev;
 253         struct usb_interface *intf;
 254         struct usb_interface *isoc;
 255
 256         spinlock_t lock;
 257
 258         unsigned long flags;
 259
 260         struct work_struct work;
 261         struct work_struct waker;
 262
 263         struct usb_anchor tx_anchor;
 264         struct usb_anchor intr_anchor;
 265         struct usb_anchor bulk_anchor;
 266         struct usb_anchor isoc_anchor;
 267         struct usb_anchor deferred;
 268         int tx_in_flight;
 269         spinlock_t txlock;
 270
 271         struct usb_endpoint_descriptor *intr_ep;
 272         struct usb_endpoint_descriptor *bulk_tx_ep;
 273         struct usb_endpoint_descriptor *bulk_rx_ep;
 274         struct usb_endpoint_descriptor *isoc_tx_ep;
 275         struct usb_endpoint_descriptor *isoc_rx_ep;
 276
 277         __u8 cmdreq_type;
 278
 279         unsigned int sco_num;
 280         int isoc_altsetting;
 281         int suspend_count;
 282 };
 283
 284 static int inc_tx(struct btusb_data *data)
 285 {
 286         unsigned long flags;
 287         int rv;
 288
 289         spin_lock_irqsave(&data->txlock, flags);
 290         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 291         if (!rv)
 292                 data->tx_in_flight++;
 293         spin_unlock_irqrestore(&data->txlock, flags);
 294
 295         return rv;
 296 }
 297
 298 static void btusb_intr_complete(struct urb *urb)
 299 {
 300         struct hci_dev *hdev = urb->context;
 301         struct btusb_data *data = hdev->driver_data;
 302         int err;
 303
 304         BT_DBG("%s urb %p status %d count %d", hdev->name,
 305                                         urb, urb->status, urb->actual_length);
 306
 307         if (!test_bit(HCI_RUNNING, &hdev->flags))
 308                 return;
 309
 310         if (urb->status == 0) {
 311                 hdev->stat.byte_rx += urb->actual_length;
 312
 313                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 314                                                 urb->transfer_buffer,
 315                                                 urb->actual_length) < 0) {
 316                         BT_ERR("%s corrupted event packet", hdev->name);
 317                         hdev->stat.err_rx++;
 318                 }
 319         } else if (urb->status == -ENOENT) {
 320                 /* Avoid suspend failed when usb_kill_urb */
 321                 return;
 322         }
 323
 324         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 325                 return;
 326
 327         usb_mark_last_busy(data->udev);
 328         usb_anchor_urb(urb, &data->intr_anchor);
 329
 330         err = usb_submit_urb(urb, GFP_ATOMIC);
 331         if (err < 0) {
 332                 /* -EPERM: urb is being killed;
 333                  * -ENODEV: device got disconnected */
 334                 if (err != -EPERM && err != -ENODEV)
 335                         BT_ERR("%s urb %p failed to resubmit (%d)",
 336                                                 hdev->name, urb, -err);
 337                 usb_unanchor_urb(urb);
 338         }
 339 }
 340
 341 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 342 {
 343         struct btusb_data *data = hdev->driver_data;
 344         struct urb *urb;
 345         unsigned char *buf;
 346         unsigned int pipe;
 347         int err, size;
 348
 349         BT_DBG("%s", hdev->name);
 350
 351         if (!data->intr_ep)
 352                 return -ENODEV;
 353
 354         urb = usb_alloc_urb(0, mem_flags);
 355         if (!urb)
 356                 return -ENOMEM;
 357
 358         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 359
 360         buf = kmalloc(size, mem_flags);
 361         if (!buf) {
 362                 usb_free_urb(urb);
 363                 return -ENOMEM;
 364         }
 365
 366         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 367
 368         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 369                                                 btusb_intr_complete, hdev,
 370                                                 data->intr_ep->bInterval);
 371
 372         urb->transfer_flags |= URB_FREE_BUFFER;
 373
 374         usb_anchor_urb(urb, &data->intr_anchor);
 375
 376         err = usb_submit_urb(urb, mem_flags);
 377         if (err < 0) {
 378                 BT_ERR("%s urb %p submission failed (%d)",
 379                                                 hdev->name, urb, -err);
 380                 usb_unanchor_urb(urb);
 381         }
 382
 383         usb_free_urb(urb);
 384
 385         return err;
 386 }
 387
 388 static void btusb_bulk_complete(struct urb *urb)
 389 {
 390         struct hci_dev *hdev = urb->context;
 391         struct btusb_data *data = hdev->driver_data;
 392         int err;
 393
 394         BT_DBG("%s urb %p status %d count %d", hdev->name,
 395                                         urb, urb->status, urb->actual_length);
 396
 397         if (!test_bit(HCI_RUNNING, &hdev->flags))
 398                 return;
 399
 400         if (urb->status == 0) {
 401                 hdev->stat.byte_rx += urb->actual_length;
 402
 403                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 404                                                 urb->transfer_buffer,
 405                                                 urb->actual_length) < 0) {
 406                         BT_ERR("%s corrupted ACL packet", hdev->name);
 407                         hdev->stat.err_rx++;
 408                 }
 409         } else if (urb->status == -ENOENT) {
 410                 /* Avoid suspend failed when usb_kill_urb */
 411                 return;
 412         }
 413
 414         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 415                 return;
 416
 417         usb_anchor_urb(urb, &data->bulk_anchor);
 418         usb_mark_last_busy(data->udev);
 419
 420         err = usb_submit_urb(urb, GFP_ATOMIC);
 421         if (err < 0) {
 422                 /* -EPERM: urb is being killed;
 423                  * -ENODEV: device got disconnected */
 424                 if (err != -EPERM && err != -ENODEV)
 425                         BT_ERR("%s urb %p failed to resubmit (%d)",
 426                                                 hdev->name, urb, -err);
 427                 usb_unanchor_urb(urb);
 428         }
 429 }
 430
 431 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 432 {
 433         struct btusb_data *data = hdev->driver_data;
 434         struct urb *urb;
 435         unsigned char *buf;
 436         unsigned int pipe;
 437         int err, size = HCI_MAX_FRAME_SIZE;
 438
 439         BT_DBG("%s", hdev->name);
 440
 441         if (!data->bulk_rx_ep)
 442                 return -ENODEV;
 443
 444         urb = usb_alloc_urb(0, mem_flags);
 445         if (!urb)
 446                 return -ENOMEM;
 447
 448         buf = kmalloc(size, mem_flags);
 449         if (!buf) {
 450                 usb_free_urb(urb);
 451                 return -ENOMEM;
 452         }
 453
 454         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 455
 456         usb_fill_bulk_urb(urb, data->udev, pipe,
 457                                         buf, size, btusb_bulk_complete, hdev);
 458
 459         urb->transfer_flags |= URB_FREE_BUFFER;
 460
 461         usb_mark_last_busy(data->udev);
 462         usb_anchor_urb(urb, &data->bulk_anchor);
 463
 464         err = usb_submit_urb(urb, mem_flags);
 465         if (err < 0) {
 466                 BT_ERR("%s urb %p submission failed (%d)",
 467                                                 hdev->name, urb, -err);
 468                 usb_unanchor_urb(urb);
 469         }
 470
 471         usb_free_urb(urb);
 472
 473         return err;
 474 }
 475
 476 static void btusb_isoc_complete(struct urb *urb)
 477 {
 478         struct hci_dev *hdev = urb->context;
 479         struct btusb_data *data = hdev->driver_data;
 480         int i, err;
 481
 482         BT_DBG("%s urb %p status %d count %d", hdev->name,
 483                                         urb, urb->status, urb->actual_length);
 484
 485         if (!test_bit(HCI_RUNNING, &hdev->flags))
 486                 return;
 487
 488         if (urb->status == 0) {
 489                 for (i = 0; i < urb->number_of_packets; i++) {
 490                         unsigned int offset = urb->iso_frame_desc[i].offset;
 491                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 492
 493                         if (urb->iso_frame_desc[i].status)
 494                                 continue;
 495
 496                         hdev->stat.byte_rx += length;
 497
 498                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 499                                                 urb->transfer_buffer + offset,
 500                                                                 length) < 0) {
 501                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 502                                 hdev->stat.err_rx++;
 503                         }
 504                 }
 505         } else if (urb->status == -ENOENT) {
 506                 /* Avoid suspend failed when usb_kill_urb */
 507                 return;
 508         }
 509
 510         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 511                 return;
 512
 513         usb_anchor_urb(urb, &data->isoc_anchor);
 514
 515         err = usb_submit_urb(urb, GFP_ATOMIC);
 516         if (err < 0) {
 517                 /* -EPERM: urb is being killed;
 518                  * -ENODEV: device got disconnected */
 519                 if (err != -EPERM && err != -ENODEV)
 520                         BT_ERR("%s urb %p failed to resubmit (%d)",
 521                                                 hdev->name, urb, -err);
 522                 usb_unanchor_urb(urb);
 523         }
 524 }
 525
 526 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 527 {
 528         int i, offset = 0;
 529
 530         BT_DBG("len %d mtu %d", len, mtu);
 531
 532         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 533                                         i++, offset += mtu, len -= mtu) {
 534                 urb->iso_frame_desc[i].offset = offset;
 535                 urb->iso_frame_desc[i].length = mtu;
 536         }
 537
 538         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 539                 urb->iso_frame_desc[i].offset = offset;
 540                 urb->iso_frame_desc[i].length = len;
 541                 i++;
 542         }
 543
 544         urb->number_of_packets = i;
 545 }
 546
 547 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 548 {
 549         struct btusb_data *data = hdev->driver_data;
 550         struct urb *urb;
 551         unsigned char *buf;
 552         unsigned int pipe;
 553         int err, size;
 554
 555         BT_DBG("%s", hdev->name);
 556
 557         if (!data->isoc_rx_ep)
 558                 return -ENODEV;
 559
 560         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 561         if (!urb)
 562                 return -ENOMEM;
 563
 564         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 565                                                 BTUSB_MAX_ISOC_FRAMES;
 566
 567         buf = kmalloc(size, mem_flags);
 568         if (!buf) {
 569                 usb_free_urb(urb);
 570                 return -ENOMEM;
 571         }
 572
 573         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 574
 575         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 576                                 hdev, data->isoc_rx_ep->bInterval);
 577
 578         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 579
 580         __fill_isoc_descriptor(urb, size,
 581                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 582
 583         usb_anchor_urb(urb, &data->isoc_anchor);
 584
 585         err = usb_submit_urb(urb, mem_flags);
 586         if (err < 0) {
 587                 BT_ERR("%s urb %p submission failed (%d)",
 588                                                 hdev->name, urb, -err);
 589                 usb_unanchor_urb(urb);
 590         }
 591
 592         usb_free_urb(urb);
 593
 594         return err;
 595 }
 596
 597 static void btusb_tx_complete(struct urb *urb)
 598 {
 599         struct sk_buff *skb = urb->context;
 600         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 601         struct btusb_data *data = hdev->driver_data;
 602
 603         BT_DBG("%s urb %p status %d count %d", hdev->name,
 604                                         urb, urb->status, urb->actual_length);
 605
 606         if (!test_bit(HCI_RUNNING, &hdev->flags))
 607                 goto done;
 608
 609         if (!urb->status)
 610                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 611         else
 612                 hdev->stat.err_tx++;
 613
 614 done:
 615         spin_lock(&data->txlock);
 616         data->tx_in_flight--;
 617         spin_unlock(&data->txlock);
 618
 619         kfree(urb->setup_packet);
 620
 621         kfree_skb(skb);
 622 }
 623
 624 static void btusb_isoc_tx_complete(struct urb *urb)
 625 {
 626         struct sk_buff *skb = urb->context;
 627         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 628
 629         BT_DBG("%s urb %p status %d count %d", hdev->name,
 630                                         urb, urb->status, urb->actual_length);
 631
 632         if (!test_bit(HCI_RUNNING, &hdev->flags))
 633                 goto done;
 634
 635         if (!urb->status)
 636                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 637         else
 638                 hdev->stat.err_tx++;
 639
 640 done:
 641         kfree(urb->setup_packet);
 642
 643         kfree_skb(skb);
 644 }
 645
 646 static int btusb_open(struct hci_dev *hdev)
 647 {
 648         struct btusb_data *data = hdev->driver_data;
 649         int err;
 650
 651         BT_DBG("%s", hdev->name);
 652
 653         err = usb_autopm_get_interface(data->intf);
 654         if (err < 0)
 655                 return err;
 656
 657         data->intf->needs_remote_wakeup = 1;
 658
 659         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 660                 goto done;
 661
 662         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 663                 goto done;
 664
 665         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 666         if (err < 0)
 667                 goto failed;
 668
 669         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 670         if (err < 0) {
 671                 usb_kill_anchored_urbs(&data->intr_anchor);
 672                 goto failed;
 673         }
 674
 675         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 676         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 677
 678 done:
 679         usb_autopm_put_interface(data->intf);
 680         return 0;
 681
 682 failed:
 683         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 684         clear_bit(HCI_RUNNING, &hdev->flags);
 685         usb_autopm_put_interface(data->intf);
 686         return err;
 687 }
 688
 689 static void btusb_stop_traffic(struct btusb_data *data)
 690 {
 691         usb_kill_anchored_urbs(&data->intr_anchor);
 692         usb_kill_anchored_urbs(&data->bulk_anchor);
 693         usb_kill_anchored_urbs(&data->isoc_anchor);
 694 }
 695
 696 static int btusb_close(struct hci_dev *hdev)
 697 {
 698         struct btusb_data *data = hdev->driver_data;
 699         int err;
 700
 701         BT_DBG("%s", hdev->name);
 702
 703         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 704                 return 0;
 705
 706         cancel_work_sync(&data->work);
 707         cancel_work_sync(&data->waker);
 708
 709         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 710         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 711         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 712
 713         btusb_stop_traffic(data);
 714         err = usb_autopm_get_interface(data->intf);
 715         if (err < 0)
 716                 goto failed;
 717
 718         data->intf->needs_remote_wakeup = 0;
 719         usb_autopm_put_interface(data->intf);
 720
 721 failed:
 722         usb_scuttle_anchored_urbs(&data->deferred);
 723         return 0;
 724 }
 725
 726 static int btusb_flush(struct hci_dev *hdev)
 727 {
 728         struct btusb_data *data = hdev->driver_data;
 729
 730         BT_DBG("%s", hdev->name);
 731
 732         usb_kill_anchored_urbs(&data->tx_anchor);
 733
 734         return 0;
 735 }
 736
 737 static int btusb_send_frame(struct sk_buff *skb)
 738 {
 739         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 740         struct btusb_data *data = hdev->driver_data;
 741         struct usb_ctrlrequest *dr;
 742         struct urb *urb;
 743         unsigned int pipe;
 744         int err;
 745
 746         BT_DBG("%s", hdev->name);
 747
 748         if (!test_bit(HCI_RUNNING, &hdev->flags))
 749                 return -EBUSY;
 750
 751         switch (bt_cb(skb)->pkt_type) {
 752         case HCI_COMMAND_PKT:
 753                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 754                 if (!urb)
 755                         return -ENOMEM;
 756
 757                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 758                 if (!dr) {
 759                         usb_free_urb(urb);
 760                         return -ENOMEM;
 761                 }
 762
 763                 dr->bRequestType = data->cmdreq_type;
 764                 dr->bRequest     = 0;
 765                 dr->wIndex       = 0;
 766                 dr->wValue       = 0;
 767                 dr->wLength      = __cpu_to_le16(skb->len);
 768
 769                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 770
 771                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 772                                 skb->data, skb->len, btusb_tx_complete, skb);
 773
 774                 hdev->stat.cmd_tx++;
 775                 break;
 776
 777         case HCI_ACLDATA_PKT:
 778                 if (!data->bulk_tx_ep)
 779                         return -ENODEV;
 780
 781                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 782                 if (!urb)
 783                         return -ENOMEM;
 784
 785                 pipe = usb_sndbulkpipe(data->udev,
 786                                         data->bulk_tx_ep->bEndpointAddress);
 787
 788                 usb_fill_bulk_urb(urb, data->udev, pipe,
 789                                 skb->data, skb->len, btusb_tx_complete, skb);
 790
 791                 hdev->stat.acl_tx++;
 792                 break;
 793
 794         case HCI_SCODATA_PKT:
 795                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 796                         return -ENODEV;
 797
 798                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 799                 if (!urb)
 800                         return -ENOMEM;
 801
 802                 pipe = usb_sndisocpipe(data->udev,
 803                                         data->isoc_tx_ep->bEndpointAddress);
 804
 805                 usb_fill_int_urb(urb, data->udev, pipe,
 806                                 skb->data, skb->len, btusb_isoc_tx_complete,
 807                                 skb, data->isoc_tx_ep->bInterval);
 808
 809                 urb->transfer_flags  = URB_ISO_ASAP;
 810
 811                 __fill_isoc_descriptor(urb, skb->len,
 812                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 813
 814                 hdev->stat.sco_tx++;
 815                 goto skip_waking;
 816
 817         default:
 818                 return -EILSEQ;
 819         }
 820
 821         err = inc_tx(data);
 822         if (err) {
 823                 usb_anchor_urb(urb, &data->deferred);
 824                 schedule_work(&data->waker);
 825                 err = 0;
 826                 goto done;
 827         }
 828
 829 skip_waking:
 830         usb_anchor_urb(urb, &data->tx_anchor);
 831
 832         err = usb_submit_urb(urb, GFP_ATOMIC);
 833         if (err < 0) {
 834                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 835                 kfree(urb->setup_packet);
 836                 usb_unanchor_urb(urb);
 837         } else {
 838                 usb_mark_last_busy(data->udev);
 839         }
 840
 841 done:
 842         usb_free_urb(urb);
 843         return err;
 844 }
 845
 846 static void btusb_destruct(struct hci_dev *hdev)
 847 {
 848         struct btusb_data *data = hdev->driver_data;
 849
 850         BT_DBG("%s", hdev->name);
 851
 852         kfree(data);
 853 }
 854
 855 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 856 {
 857         struct btusb_data *data = hdev->driver_data;
 858
 859         BT_DBG("%s evt %d", hdev->name, evt);
 860
 861         if (hdev->conn_hash.sco_num != data->sco_num) {
 862                 data->sco_num = hdev->conn_hash.sco_num;
 863                 schedule_work(&data->work);
 864         }
 865 }
 866
 867 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 868 {
 869         struct btusb_data *data = hdev->driver_data;
 870         struct usb_interface *intf = data->isoc;
 871         struct usb_endpoint_descriptor *ep_desc;
 872         int i, err;
 873
 874         if (!data->isoc)
 875                 return -ENODEV;
 876
 877         err = usb_set_interface(data->udev, 1, altsetting);
 878         if (err < 0) {
 879                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 880                 return err;
 881         }
 882
 883         data->isoc_altsetting = altsetting;
 884
 885         data->isoc_tx_ep = NULL;
 886         data->isoc_rx_ep = NULL;
 887
 888         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 889                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 890
 891                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 892                         data->isoc_tx_ep = ep_desc;
 893                         continue;
 894                 }
 895
 896                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 897                         data->isoc_rx_ep = ep_desc;
 898                         continue;
 899                 }
 900         }
 901
 902         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 903                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 904                 return -ENODEV;
 905         }
 906
 907         return 0;
 908 }
 909
 910 static void btusb_work(struct work_struct *work)
 911 {
 912         struct btusb_data *data = container_of(work, struct btusb_data, work);
 913         struct hci_dev *hdev = data->hdev;
 914         int err;
 915
 916         if (hdev->conn_hash.sco_num > 0) {
 917                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 918                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 919                         if (err < 0) {
 920                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 921                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 922                                 return;
 923                         }
 924
 925                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 926                 }
 927                 if (data->isoc_altsetting != 2) {
 928                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 929                         usb_kill_anchored_urbs(&data->isoc_anchor);
 930
 931                         if (__set_isoc_interface(hdev, 2) < 0)
 932                                 return;
 933                 }
 934
 935                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 936                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 937                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 938                         else
 939                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 940                 }
 941         } else {
 942                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 943                 usb_kill_anchored_urbs(&data->isoc_anchor);
 944
 945                 __set_isoc_interface(hdev, 0);
 946                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 947                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 948         }
 949 }
 950
 951 static void btusb_waker(struct work_struct *work)
 952 {
 953         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 954         int err;
 955
 956         err = usb_autopm_get_interface(data->intf);
 957         if (err < 0)
 958                 return;
 959
 960         usb_autopm_put_interface(data->intf);
 961 }
 962
 963 static int btusb_probe(struct usb_interface *intf,
 964                                 const struct usb_device_id *id)
 965 {
 966         struct usb_endpoint_descriptor *ep_desc;
 967         struct btusb_data *data;
 968         struct hci_dev *hdev;
 969         int i, err;
 970
 971         BT_DBG("intf %p id %p", intf, id);
 972
 973         /* interface numbers are hardcoded in the spec */
 974         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 975                 return -ENODEV;
 976
 977         if (!id->driver_info) {
 978                 const struct usb_device_id *match;
 979                 match = usb_match_id(intf, blacklist_table);
 980                 if (match)
 981                         id = match;
 982         }
 983
 984         if (id->driver_info == BTUSB_IGNORE)
 985                 return -ENODEV;
 986
 987         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 988                 return -ENODEV;
 989
 990         if (ignore_csr && id->driver_info & BTUSB_CSR)
 991                 return -ENODEV;
 992
 993         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 994                 return -ENODEV;
 995
 996         if (id->driver_info & BTUSB_ATH3012) {
 997                 struct usb_device *udev = interface_to_usbdev(intf);
 998
 999                 /* Old firmware would otherwise let ath3k driver load
1000                  * patch and sysconfig files */
1001                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1002                         return -ENODEV;
1003         }
1004
1005         data = kzalloc(sizeof(*data), GFP_KERNEL);
1006         if (!data)
1007                 return -ENOMEM;
1008
1009         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1010                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1011
1012                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1013                         data->intr_ep = ep_desc;
1014                         continue;
1015                 }
1016
1017                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1018                         data->bulk_tx_ep = ep_desc;
1019                         continue;
1020                 }
1021
1022                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1023                         data->bulk_rx_ep = ep_desc;
1024                         continue;
1025                 }
1026         }
1027
1028         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
1029                 kfree(data);
1030                 return -ENODEV;
1031         }
1032
1033         data->cmdreq_type = USB_TYPE_CLASS;
1034
1035         data->udev = interface_to_usbdev(intf);
1036         data->intf = intf;
1037
1038         spin_lock_init(&data->lock);
1039
1040         INIT_WORK(&data->work, btusb_work);
1041         INIT_WORK(&data->waker, btusb_waker);
1042         spin_lock_init(&data->txlock);
1043
1044         init_usb_anchor(&data->tx_anchor);
1045         init_usb_anchor(&data->intr_anchor);
1046         init_usb_anchor(&data->bulk_anchor);
1047         init_usb_anchor(&data->isoc_anchor);
1048         init_usb_anchor(&data->deferred);
1049
1050         hdev = hci_alloc_dev();
1051         if (!hdev) {
1052                 kfree(data);
1053                 return -ENOMEM;
1054         }
1055
1056         hdev->bus = HCI_USB;
1057         hdev->driver_data = data;
1058
1059         data->hdev = hdev;
1060
1061         SET_HCIDEV_DEV(hdev, &intf->dev);
1062
1063         hdev->open     = btusb_open;
1064         hdev->close    = btusb_close;
1065         hdev->flush    = btusb_flush;
1066         hdev->send     = btusb_send_frame;
1067         hdev->destruct = btusb_destruct;
1068         hdev->notify   = btusb_notify;
1069
1070         hdev->owner = THIS_MODULE;
1071
1072         /* Interface numbers are hardcoded in the specification */
1073         data->isoc = usb_ifnum_to_if(data->udev, 1);
1074
1075         if (!reset)
1076                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1077
1078         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1079                 if (!disable_scofix)
1080                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1081         }
1082
1083         if (id->driver_info & BTUSB_BROKEN_ISOC)
1084                 data->isoc = NULL;
1085
1086         if (id->driver_info & BTUSB_DIGIANSWER) {
1087                 data->cmdreq_type = USB_TYPE_VENDOR;
1088                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1089         }
1090
1091         if (id->driver_info & BTUSB_CSR) {
1092                 struct usb_device *udev = data->udev;
1093
1094                 /* Old firmware would otherwise execute USB reset */
1095                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1096                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1097         }
1098
1099         if (id->driver_info & BTUSB_SNIFFER) {
1100                 struct usb_device *udev = data->udev;
1101
1102                 /* New sniffer firmware has crippled HCI interface */
1103                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1104                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1105
1106                 data->isoc = NULL;
1107         }
1108
1109         if (id->driver_info & BTUSB_BCM92035) {
1110                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1111                 struct sk_buff *skb;
1112
1113                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1114                 if (skb) {
1115                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1116                         skb_queue_tail(&hdev->driver_init, skb);
1117                 }
1118         }
1119
1120         if (data->isoc) {
1121                 err = usb_driver_claim_interface(&btusb_driver,
1122                                                         data->isoc, data);
1123                 if (err < 0) {
1124                         hci_free_dev(hdev);
1125                         kfree(data);
1126                         return err;
1127                 }
1128         }
1129
1130         err = hci_register_dev(hdev);
1131         if (err < 0) {
1132                 hci_free_dev(hdev);
1133                 kfree(data);
1134                 return err;
1135         }
1136
1137         usb_set_intfdata(intf, data);
1138
1139         return 0;
1140 }
1141
1142 static void btusb_disconnect(struct usb_interface *intf)
1143 {
1144         struct btusb_data *data = usb_get_intfdata(intf);
1145         struct hci_dev *hdev;
1146
1147         BT_DBG("intf %p", intf);
1148
1149         if (!data)
1150                 return;
1151
1152         hdev = data->hdev;
1153
1154         __hci_dev_hold(hdev);
1155
1156         usb_set_intfdata(data->intf, NULL);
1157
1158         if (data->isoc)
1159                 usb_set_intfdata(data->isoc, NULL);
1160
1161         hci_unregister_dev(hdev);
1162
1163         if (intf == data->isoc)
1164                 usb_driver_release_interface(&btusb_driver, data->intf);
1165         else if (data->isoc)
1166                 usb_driver_release_interface(&btusb_driver, data->isoc);
1167
1168         __hci_dev_put(hdev);
1169
1170         hci_free_dev(hdev);
1171 }
1172
1173 #ifdef CONFIG_PM
1174 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1175 {
1176         struct btusb_data *data = usb_get_intfdata(intf);
1177
1178         BT_DBG("intf %p", intf);
1179
1180         if (data->suspend_count++)
1181                 return 0;
1182
1183         spin_lock_irq(&data->txlock);
1184         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1185                 set_bit(BTUSB_SUSPENDING, &data->flags);
1186                 spin_unlock_irq(&data->txlock);
1187         } else {
1188                 spin_unlock_irq(&data->txlock);
1189                 data->suspend_count--;
1190                 return -EBUSY;
1191         }
1192
1193         cancel_work_sync(&data->work);
1194
1195         btusb_stop_traffic(data);
1196         usb_kill_anchored_urbs(&data->tx_anchor);
1197
1198         return 0;
1199 }
1200
1201 static void play_deferred(struct btusb_data *data)
1202 {
1203         struct urb *urb;
1204         int err;
1205
1206         while ((urb = usb_get_from_anchor(&data->deferred))) {
1207                 err = usb_submit_urb(urb, GFP_ATOMIC);
1208                 if (err < 0)
1209                         break;
1210
1211                 data->tx_in_flight++;
1212         }
1213         usb_scuttle_anchored_urbs(&data->deferred);
1214 }
1215
1216 static int btusb_resume(struct usb_interface *intf)
1217 {
1218         struct btusb_data *data = usb_get_intfdata(intf);
1219         struct hci_dev *hdev = data->hdev;
1220         int err = 0;
1221
1222         BT_DBG("intf %p", intf);
1223
1224         if (--data->suspend_count)
1225                 return 0;
1226
1227         if (!test_bit(HCI_RUNNING, &hdev->flags))
1228                 goto done;
1229
1230         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1231                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1232                 if (err < 0) {
1233                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1234                         goto failed;
1235                 }
1236         }
1237
1238         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1239                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1240                 if (err < 0) {
1241                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1242                         goto failed;
1243                 }
1244
1245                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1246         }
1247
1248         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1249                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1250                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1251                 else
1252                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1253         }
1254
1255         spin_lock_irq(&data->txlock);
1256         play_deferred(data);
1257         clear_bit(BTUSB_SUSPENDING, &data->flags);
1258         spin_unlock_irq(&data->txlock);
1259         schedule_work(&data->work);
1260
1261         return 0;
1262
1263 failed:
1264         usb_scuttle_anchored_urbs(&data->deferred);
1265 done:
1266         spin_lock_irq(&data->txlock);
1267         clear_bit(BTUSB_SUSPENDING, &data->flags);
1268         spin_unlock_irq(&data->txlock);
1269
1270         return err;
1271 }
1272 #endif
1273
1274 static struct usb_driver btusb_driver = {
1275         .name           = "btusb",
1276         .probe          = btusb_probe,
1277         .disconnect     = btusb_disconnect,
1278 #ifdef CONFIG_PM
1279         .suspend        = btusb_suspend,
1280         .resume         = btusb_resume,
1281 #endif
1282         .id_table       = btusb_table,
1283         .supports_autosuspend = 1,
1284 };
1285
1286 static int __init btusb_init(void)
1287 {
1288         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1289
1290         return usb_register(&btusb_driver);
1291 }
1292
1293 static void __exit btusb_exit(void)
1294 {
1295         usb_deregister(&btusb_driver);
1296 }
1297
1298 module_init(btusb_init);
1299 module_exit(btusb_exit);
1300
1301 module_param(ignore_dga, bool, 0644);
1302 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1303
1304 module_param(ignore_csr, bool, 0644);
1305 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1306
1307 module_param(ignore_sniffer, bool, 0644);
1308 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1309
1310 module_param(disable_scofix, bool, 0644);
1311 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1312
1313 module_param(force_scofix, bool, 0644);
1314 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1315
1316 module_param(reset, bool, 0644);
1317 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1318
1319 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1320 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1321 MODULE_VERSION(VERSION);
1322 MODULE_LICENSE("GPL");