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 #define BTUSB_INTEL_BOOT        0x200
  59
  60 static struct usb_device_id btusb_table[] = {
  61         /* Generic Bluetooth USB device */
  62         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  63
  64         /* Apple-specific (Broadcom) devices */
  65         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  66
  67         /* MediaTek MT76x0E */
  68         { USB_DEVICE(0x0e8d, 0x763f) },
  69
  70         /* Broadcom SoftSailing reporting vendor specific */
  71         { USB_DEVICE(0x0a5c, 0x21e1) },
  72
  73         /* Apple MacBookPro 7,1 */
  74         { USB_DEVICE(0x05ac, 0x8213) },
  75
  76         /* Apple iMac11,1 */
  77         { USB_DEVICE(0x05ac, 0x8215) },
  78
  79         /* Apple MacBookPro6,2 */
  80         { USB_DEVICE(0x05ac, 0x8218) },
  81
  82         /* Apple MacBookAir3,1, MacBookAir3,2 */
  83         { USB_DEVICE(0x05ac, 0x821b) },
  84
  85         /* Apple MacBookAir4,1 */
  86         { USB_DEVICE(0x05ac, 0x821f) },
  87
  88         /* Apple MacBookPro8,2 */
  89         { USB_DEVICE(0x05ac, 0x821a) },
  90
  91         /* Apple MacMini5,1 */
  92         { USB_DEVICE(0x05ac, 0x8281) },
  93
  94         /* AVM BlueFRITZ! USB v2.0 */
  95         { USB_DEVICE(0x057c, 0x3800) },
  96
  97         /* Bluetooth Ultraport Module from IBM */
  98         { USB_DEVICE(0x04bf, 0x030a) },
  99
 100         /* ALPS Modules with non-standard id */
 101         { USB_DEVICE(0x044e, 0x3001) },
 102         { USB_DEVICE(0x044e, 0x3002) },
 103
 104         /* Ericsson with non-standard id */
 105         { USB_DEVICE(0x0bdb, 0x1002) },
 106
 107         /* Canyon CN-BTU1 with HID interfaces */
 108         { USB_DEVICE(0x0c10, 0x0000) },
 109
 110         /* Broadcom BCM20702A0 */
 111         { USB_DEVICE(0x0489, 0xe042) },
 112         { USB_DEVICE(0x04ca, 0x2003) },
 113         { USB_DEVICE(0x0b05, 0x17b5) },
 114         { USB_DEVICE(0x0b05, 0x17cb) },
 115         { USB_DEVICE(0x413c, 0x8197) },
 116
 117         /* Foxconn - Hon Hai */
 118         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 119
 120         /* Broadcom devices with vendor specific id */
 121         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
 122
 123         /* ASUSTek Computer - Broadcom based */
 124         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01) },
 125
 126         /* Belkin F8065bf - Broadcom based */
 127         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 128
 129         /* IMC Networks - Broadcom based */
 130         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 131
 132         /* Intel Bluetooth USB Bootloader (RAM module) */
 133         { USB_DEVICE(0x8087, 0x0a5a),
 134           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 135
 136         { }     /* Terminating entry */
 137 };
 138
 139 MODULE_DEVICE_TABLE(usb, btusb_table);
 140
 141 static struct usb_device_id blacklist_table[] = {
 142         /* CSR BlueCore devices */
 143         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 144
 145         /* Broadcom BCM2033 without firmware */
 146         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 147
 148         /* Atheros 3011 with sflash firmware */
 149         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 150         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 151         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 152         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 153         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 154         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 155         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 156
 157         /* Atheros AR9285 Malbec with sflash firmware */
 158         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 159
 160         /* Atheros 3012 with sflash firmware */
 161         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 191         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 198
 199         /* Atheros AR5BBU12 with sflash firmware */
 200         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 201
 202         /* Atheros AR5BBU12 with sflash firmware */
 203         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 205
 206         /* Broadcom BCM2035 */
 207         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 208         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 209         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 210
 211         /* Broadcom BCM2045 */
 212         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 213         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 214
 215         /* IBM/Lenovo ThinkPad with Broadcom chip */
 216         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 217         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 218
 219         /* HP laptop with Broadcom chip */
 220         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 221
 222         /* Dell laptop with Broadcom chip */
 223         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 224
 225         /* Dell Wireless 370 and 410 devices */
 226         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 227         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 228
 229         /* Belkin F8T012 and F8T013 devices */
 230         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 231         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 232
 233         /* Asus WL-BTD202 device */
 234         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 235
 236         /* Kensington Bluetooth USB adapter */
 237         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 238
 239         /* RTX Telecom based adapters with buggy SCO support */
 240         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 241         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 242
 243         /* CONWISE Technology based adapters with buggy SCO support */
 244         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 245
 246         /* Digianswer devices */
 247         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 248         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 249
 250         /* CSR BlueCore Bluetooth Sniffer */
 251         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 252
 253         /* Frontline ComProbe Bluetooth Sniffer */
 254         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 255
 256         { }     /* Terminating entry */
 257 };
 258
 259 #define BTUSB_MAX_ISOC_FRAMES   10
 260
 261 #define BTUSB_INTR_RUNNING      0
 262 #define BTUSB_BULK_RUNNING      1
 263 #define BTUSB_ISOC_RUNNING      2
 264 #define BTUSB_SUSPENDING        3
 265 #define BTUSB_DID_ISO_RESUME    4
 266
 267 struct btusb_data {
 268         struct hci_dev       *hdev;
 269         struct usb_device    *udev;
 270         struct usb_interface *intf;
 271         struct usb_interface *isoc;
 272
 273         spinlock_t lock;
 274
 275         unsigned long flags;
 276
 277         struct work_struct work;
 278         struct work_struct waker;
 279
 280         struct usb_anchor tx_anchor;
 281         struct usb_anchor intr_anchor;
 282         struct usb_anchor bulk_anchor;
 283         struct usb_anchor isoc_anchor;
 284         struct usb_anchor deferred;
 285         int tx_in_flight;
 286         spinlock_t txlock;
 287
 288         struct usb_endpoint_descriptor *intr_ep;
 289         struct usb_endpoint_descriptor *bulk_tx_ep;
 290         struct usb_endpoint_descriptor *bulk_rx_ep;
 291         struct usb_endpoint_descriptor *isoc_tx_ep;
 292         struct usb_endpoint_descriptor *isoc_rx_ep;
 293
 294         __u8 cmdreq_type;
 295
 296         unsigned int sco_num;
 297         int isoc_altsetting;
 298         int suspend_count;
 299 };
 300
 301 static int inc_tx(struct btusb_data *data)
 302 {
 303         unsigned long flags;
 304         int rv;
 305
 306         spin_lock_irqsave(&data->txlock, flags);
 307         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 308         if (!rv)
 309                 data->tx_in_flight++;
 310         spin_unlock_irqrestore(&data->txlock, flags);
 311
 312         return rv;
 313 }
 314
 315 static void btusb_intr_complete(struct urb *urb)
 316 {
 317         struct hci_dev *hdev = urb->context;
 318         struct btusb_data *data = hdev->driver_data;
 319         int err;
 320
 321         BT_DBG("%s urb %p status %d count %d", hdev->name,
 322                                         urb, urb->status, urb->actual_length);
 323
 324         if (!test_bit(HCI_RUNNING, &hdev->flags))
 325                 return;
 326
 327         if (urb->status == 0) {
 328                 hdev->stat.byte_rx += urb->actual_length;
 329
 330                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 331                                                 urb->transfer_buffer,
 332                                                 urb->actual_length) < 0) {
 333                         BT_ERR("%s corrupted event packet", hdev->name);
 334                         hdev->stat.err_rx++;
 335                 }
 336         } else if (urb->status == -ENOENT) {
 337                 /* Avoid suspend failed when usb_kill_urb */
 338                 return;
 339         }
 340
 341         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 342                 return;
 343
 344         usb_mark_last_busy(data->udev);
 345         usb_anchor_urb(urb, &data->intr_anchor);
 346
 347         err = usb_submit_urb(urb, GFP_ATOMIC);
 348         if (err < 0) {
 349                 /* -EPERM: urb is being killed;
 350                  * -ENODEV: device got disconnected */
 351                 if (err != -EPERM && err != -ENODEV)
 352                         BT_ERR("%s urb %p failed to resubmit (%d)",
 353                                                 hdev->name, urb, -err);
 354                 usb_unanchor_urb(urb);
 355         }
 356 }
 357
 358 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 359 {
 360         struct btusb_data *data = hdev->driver_data;
 361         struct urb *urb;
 362         unsigned char *buf;
 363         unsigned int pipe;
 364         int err, size;
 365
 366         BT_DBG("%s", hdev->name);
 367
 368         if (!data->intr_ep)
 369                 return -ENODEV;
 370
 371         urb = usb_alloc_urb(0, mem_flags);
 372         if (!urb)
 373                 return -ENOMEM;
 374
 375         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 376
 377         buf = kmalloc(size, mem_flags);
 378         if (!buf) {
 379                 usb_free_urb(urb);
 380                 return -ENOMEM;
 381         }
 382
 383         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 384
 385         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 386                                                 btusb_intr_complete, hdev,
 387                                                 data->intr_ep->bInterval);
 388
 389         urb->transfer_flags |= URB_FREE_BUFFER;
 390
 391         usb_anchor_urb(urb, &data->intr_anchor);
 392
 393         err = usb_submit_urb(urb, mem_flags);
 394         if (err < 0) {
 395                 BT_ERR("%s urb %p submission failed (%d)",
 396                                                 hdev->name, urb, -err);
 397                 usb_unanchor_urb(urb);
 398         }
 399
 400         usb_free_urb(urb);
 401
 402         return err;
 403 }
 404
 405 static void btusb_bulk_complete(struct urb *urb)
 406 {
 407         struct hci_dev *hdev = urb->context;
 408         struct btusb_data *data = hdev->driver_data;
 409         int err;
 410
 411         BT_DBG("%s urb %p status %d count %d", hdev->name,
 412                                         urb, urb->status, urb->actual_length);
 413
 414         if (!test_bit(HCI_RUNNING, &hdev->flags))
 415                 return;
 416
 417         if (urb->status == 0) {
 418                 hdev->stat.byte_rx += urb->actual_length;
 419
 420                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 421                                                 urb->transfer_buffer,
 422                                                 urb->actual_length) < 0) {
 423                         BT_ERR("%s corrupted ACL packet", hdev->name);
 424                         hdev->stat.err_rx++;
 425                 }
 426         } else if (urb->status == -ENOENT) {
 427                 /* Avoid suspend failed when usb_kill_urb */
 428                 return;
 429         }
 430
 431         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 432                 return;
 433
 434         usb_anchor_urb(urb, &data->bulk_anchor);
 435         usb_mark_last_busy(data->udev);
 436
 437         err = usb_submit_urb(urb, GFP_ATOMIC);
 438         if (err < 0) {
 439                 /* -EPERM: urb is being killed;
 440                  * -ENODEV: device got disconnected */
 441                 if (err != -EPERM && err != -ENODEV)
 442                         BT_ERR("%s urb %p failed to resubmit (%d)",
 443                                                 hdev->name, urb, -err);
 444                 usb_unanchor_urb(urb);
 445         }
 446 }
 447
 448 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 449 {
 450         struct btusb_data *data = hdev->driver_data;
 451         struct urb *urb;
 452         unsigned char *buf;
 453         unsigned int pipe;
 454         int err, size = HCI_MAX_FRAME_SIZE;
 455
 456         BT_DBG("%s", hdev->name);
 457
 458         if (!data->bulk_rx_ep)
 459                 return -ENODEV;
 460
 461         urb = usb_alloc_urb(0, mem_flags);
 462         if (!urb)
 463                 return -ENOMEM;
 464
 465         buf = kmalloc(size, mem_flags);
 466         if (!buf) {
 467                 usb_free_urb(urb);
 468                 return -ENOMEM;
 469         }
 470
 471         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 472
 473         usb_fill_bulk_urb(urb, data->udev, pipe,
 474                                         buf, size, btusb_bulk_complete, hdev);
 475
 476         urb->transfer_flags |= URB_FREE_BUFFER;
 477
 478         usb_mark_last_busy(data->udev);
 479         usb_anchor_urb(urb, &data->bulk_anchor);
 480
 481         err = usb_submit_urb(urb, mem_flags);
 482         if (err < 0) {
 483                 BT_ERR("%s urb %p submission failed (%d)",
 484                                                 hdev->name, urb, -err);
 485                 usb_unanchor_urb(urb);
 486         }
 487
 488         usb_free_urb(urb);
 489
 490         return err;
 491 }
 492
 493 static void btusb_isoc_complete(struct urb *urb)
 494 {
 495         struct hci_dev *hdev = urb->context;
 496         struct btusb_data *data = hdev->driver_data;
 497         int i, err;
 498
 499         BT_DBG("%s urb %p status %d count %d", hdev->name,
 500                                         urb, urb->status, urb->actual_length);
 501
 502         if (!test_bit(HCI_RUNNING, &hdev->flags))
 503                 return;
 504
 505         if (urb->status == 0) {
 506                 for (i = 0; i < urb->number_of_packets; i++) {
 507                         unsigned int offset = urb->iso_frame_desc[i].offset;
 508                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 509
 510                         if (urb->iso_frame_desc[i].status)
 511                                 continue;
 512
 513                         hdev->stat.byte_rx += length;
 514
 515                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 516                                                 urb->transfer_buffer + offset,
 517                                                                 length) < 0) {
 518                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 519                                 hdev->stat.err_rx++;
 520                         }
 521                 }
 522         } else if (urb->status == -ENOENT) {
 523                 /* Avoid suspend failed when usb_kill_urb */
 524                 return;
 525         }
 526
 527         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 528                 return;
 529
 530         usb_anchor_urb(urb, &data->isoc_anchor);
 531
 532         err = usb_submit_urb(urb, GFP_ATOMIC);
 533         if (err < 0) {
 534                 /* -EPERM: urb is being killed;
 535                  * -ENODEV: device got disconnected */
 536                 if (err != -EPERM && err != -ENODEV)
 537                         BT_ERR("%s urb %p failed to resubmit (%d)",
 538                                                 hdev->name, urb, -err);
 539                 usb_unanchor_urb(urb);
 540         }
 541 }
 542
 543 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 544 {
 545         int i, offset = 0;
 546
 547         BT_DBG("len %d mtu %d", len, mtu);
 548
 549         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 550                                         i++, offset += mtu, len -= mtu) {
 551                 urb->iso_frame_desc[i].offset = offset;
 552                 urb->iso_frame_desc[i].length = mtu;
 553         }
 554
 555         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 556                 urb->iso_frame_desc[i].offset = offset;
 557                 urb->iso_frame_desc[i].length = len;
 558                 i++;
 559         }
 560
 561         urb->number_of_packets = i;
 562 }
 563
 564 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 565 {
 566         struct btusb_data *data = hdev->driver_data;
 567         struct urb *urb;
 568         unsigned char *buf;
 569         unsigned int pipe;
 570         int err, size;
 571
 572         BT_DBG("%s", hdev->name);
 573
 574         if (!data->isoc_rx_ep)
 575                 return -ENODEV;
 576
 577         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 578         if (!urb)
 579                 return -ENOMEM;
 580
 581         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 582                                                 BTUSB_MAX_ISOC_FRAMES;
 583
 584         buf = kmalloc(size, mem_flags);
 585         if (!buf) {
 586                 usb_free_urb(urb);
 587                 return -ENOMEM;
 588         }
 589
 590         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 591
 592         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 593                                 hdev, data->isoc_rx_ep->bInterval);
 594
 595         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 596
 597         __fill_isoc_descriptor(urb, size,
 598                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 599
 600         usb_anchor_urb(urb, &data->isoc_anchor);
 601
 602         err = usb_submit_urb(urb, mem_flags);
 603         if (err < 0) {
 604                 BT_ERR("%s urb %p submission failed (%d)",
 605                                                 hdev->name, urb, -err);
 606                 usb_unanchor_urb(urb);
 607         }
 608
 609         usb_free_urb(urb);
 610
 611         return err;
 612 }
 613
 614 static void btusb_tx_complete(struct urb *urb)
 615 {
 616         struct sk_buff *skb = urb->context;
 617         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 618         struct btusb_data *data = hdev->driver_data;
 619
 620         BT_DBG("%s urb %p status %d count %d", hdev->name,
 621                                         urb, urb->status, urb->actual_length);
 622
 623         if (!test_bit(HCI_RUNNING, &hdev->flags))
 624                 goto done;
 625
 626         if (!urb->status)
 627                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 628         else
 629                 hdev->stat.err_tx++;
 630
 631 done:
 632         spin_lock(&data->txlock);
 633         data->tx_in_flight--;
 634         spin_unlock(&data->txlock);
 635
 636         kfree(urb->setup_packet);
 637
 638         kfree_skb(skb);
 639 }
 640
 641 static void btusb_isoc_tx_complete(struct urb *urb)
 642 {
 643         struct sk_buff *skb = urb->context;
 644         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 645
 646         BT_DBG("%s urb %p status %d count %d", hdev->name,
 647                                         urb, urb->status, urb->actual_length);
 648
 649         if (!test_bit(HCI_RUNNING, &hdev->flags))
 650                 goto done;
 651
 652         if (!urb->status)
 653                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 654         else
 655                 hdev->stat.err_tx++;
 656
 657 done:
 658         kfree(urb->setup_packet);
 659
 660         kfree_skb(skb);
 661 }
 662
 663 static int btusb_open(struct hci_dev *hdev)
 664 {
 665         struct btusb_data *data = hdev->driver_data;
 666         int err;
 667
 668         BT_DBG("%s", hdev->name);
 669
 670         err = usb_autopm_get_interface(data->intf);
 671         if (err < 0)
 672                 return err;
 673
 674         data->intf->needs_remote_wakeup = 1;
 675
 676         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 677                 goto done;
 678
 679         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 680                 goto done;
 681
 682         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 683         if (err < 0)
 684                 goto failed;
 685
 686         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 687         if (err < 0) {
 688                 usb_kill_anchored_urbs(&data->intr_anchor);
 689                 goto failed;
 690         }
 691
 692         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 693         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 694
 695 done:
 696         usb_autopm_put_interface(data->intf);
 697         return 0;
 698
 699 failed:
 700         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 701         clear_bit(HCI_RUNNING, &hdev->flags);
 702         usb_autopm_put_interface(data->intf);
 703         return err;
 704 }
 705
 706 static void btusb_stop_traffic(struct btusb_data *data)
 707 {
 708         usb_kill_anchored_urbs(&data->intr_anchor);
 709         usb_kill_anchored_urbs(&data->bulk_anchor);
 710         usb_kill_anchored_urbs(&data->isoc_anchor);
 711 }
 712
 713 static int btusb_close(struct hci_dev *hdev)
 714 {
 715         struct btusb_data *data = hdev->driver_data;
 716         int err;
 717
 718         BT_DBG("%s", hdev->name);
 719
 720         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 721                 return 0;
 722
 723         cancel_work_sync(&data->work);
 724         cancel_work_sync(&data->waker);
 725
 726         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 727         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 728         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 729
 730         btusb_stop_traffic(data);
 731         err = usb_autopm_get_interface(data->intf);
 732         if (err < 0)
 733                 goto failed;
 734
 735         data->intf->needs_remote_wakeup = 0;
 736         usb_autopm_put_interface(data->intf);
 737
 738 failed:
 739         usb_scuttle_anchored_urbs(&data->deferred);
 740         return 0;
 741 }
 742
 743 static int btusb_flush(struct hci_dev *hdev)
 744 {
 745         struct btusb_data *data = hdev->driver_data;
 746
 747         BT_DBG("%s", hdev->name);
 748
 749         usb_kill_anchored_urbs(&data->tx_anchor);
 750
 751         return 0;
 752 }
 753
 754 static int btusb_send_frame(struct sk_buff *skb)
 755 {
 756         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 757         struct btusb_data *data = hdev->driver_data;
 758         struct usb_ctrlrequest *dr;
 759         struct urb *urb;
 760         unsigned int pipe;
 761         int err;
 762
 763         BT_DBG("%s", hdev->name);
 764
 765         if (!test_bit(HCI_RUNNING, &hdev->flags))
 766                 return -EBUSY;
 767
 768         switch (bt_cb(skb)->pkt_type) {
 769         case HCI_COMMAND_PKT:
 770                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 771                 if (!urb)
 772                         return -ENOMEM;
 773
 774                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 775                 if (!dr) {
 776                         usb_free_urb(urb);
 777                         return -ENOMEM;
 778                 }
 779
 780                 dr->bRequestType = data->cmdreq_type;
 781                 dr->bRequest     = 0;
 782                 dr->wIndex       = 0;
 783                 dr->wValue       = 0;
 784                 dr->wLength      = __cpu_to_le16(skb->len);
 785
 786                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 787
 788                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 789                                 skb->data, skb->len, btusb_tx_complete, skb);
 790
 791                 hdev->stat.cmd_tx++;
 792                 break;
 793
 794         case HCI_ACLDATA_PKT:
 795                 if (!data->bulk_tx_ep)
 796                         return -ENODEV;
 797
 798                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 799                 if (!urb)
 800                         return -ENOMEM;
 801
 802                 pipe = usb_sndbulkpipe(data->udev,
 803                                         data->bulk_tx_ep->bEndpointAddress);
 804
 805                 usb_fill_bulk_urb(urb, data->udev, pipe,
 806                                 skb->data, skb->len, btusb_tx_complete, skb);
 807
 808                 hdev->stat.acl_tx++;
 809                 break;
 810
 811         case HCI_SCODATA_PKT:
 812                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 813                         return -ENODEV;
 814
 815                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 816                 if (!urb)
 817                         return -ENOMEM;
 818
 819                 pipe = usb_sndisocpipe(data->udev,
 820                                         data->isoc_tx_ep->bEndpointAddress);
 821
 822                 usb_fill_int_urb(urb, data->udev, pipe,
 823                                 skb->data, skb->len, btusb_isoc_tx_complete,
 824                                 skb, data->isoc_tx_ep->bInterval);
 825
 826                 urb->transfer_flags  = URB_ISO_ASAP;
 827
 828                 __fill_isoc_descriptor(urb, skb->len,
 829                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 830
 831                 hdev->stat.sco_tx++;
 832                 goto skip_waking;
 833
 834         default:
 835                 return -EILSEQ;
 836         }
 837
 838         err = inc_tx(data);
 839         if (err) {
 840                 usb_anchor_urb(urb, &data->deferred);
 841                 schedule_work(&data->waker);
 842                 err = 0;
 843                 goto done;
 844         }
 845
 846 skip_waking:
 847         usb_anchor_urb(urb, &data->tx_anchor);
 848
 849         err = usb_submit_urb(urb, GFP_ATOMIC);
 850         if (err < 0) {
 851                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 852                 kfree(urb->setup_packet);
 853                 usb_unanchor_urb(urb);
 854         } else {
 855                 usb_mark_last_busy(data->udev);
 856         }
 857
 858 done:
 859         usb_free_urb(urb);
 860         return err;
 861 }
 862
 863 static void btusb_destruct(struct hci_dev *hdev)
 864 {
 865         struct btusb_data *data = hdev->driver_data;
 866
 867         BT_DBG("%s", hdev->name);
 868
 869         kfree(data);
 870 }
 871
 872 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 873 {
 874         struct btusb_data *data = hdev->driver_data;
 875
 876         BT_DBG("%s evt %d", hdev->name, evt);
 877
 878         if (hdev->conn_hash.sco_num != data->sco_num) {
 879                 data->sco_num = hdev->conn_hash.sco_num;
 880                 schedule_work(&data->work);
 881         }
 882 }
 883
 884 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 885 {
 886         struct btusb_data *data = hdev->driver_data;
 887         struct usb_interface *intf = data->isoc;
 888         struct usb_endpoint_descriptor *ep_desc;
 889         int i, err;
 890
 891         if (!data->isoc)
 892                 return -ENODEV;
 893
 894         err = usb_set_interface(data->udev, 1, altsetting);
 895         if (err < 0) {
 896                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 897                 return err;
 898         }
 899
 900         data->isoc_altsetting = altsetting;
 901
 902         data->isoc_tx_ep = NULL;
 903         data->isoc_rx_ep = NULL;
 904
 905         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 906                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 907
 908                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 909                         data->isoc_tx_ep = ep_desc;
 910                         continue;
 911                 }
 912
 913                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 914                         data->isoc_rx_ep = ep_desc;
 915                         continue;
 916                 }
 917         }
 918
 919         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 920                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 921                 return -ENODEV;
 922         }
 923
 924         return 0;
 925 }
 926
 927 static void btusb_work(struct work_struct *work)
 928 {
 929         struct btusb_data *data = container_of(work, struct btusb_data, work);
 930         struct hci_dev *hdev = data->hdev;
 931         int err;
 932
 933         if (hdev->conn_hash.sco_num > 0) {
 934                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 935                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 936                         if (err < 0) {
 937                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 938                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 939                                 return;
 940                         }
 941
 942                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 943                 }
 944                 if (data->isoc_altsetting != 2) {
 945                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 946                         usb_kill_anchored_urbs(&data->isoc_anchor);
 947
 948                         if (__set_isoc_interface(hdev, 2) < 0)
 949                                 return;
 950                 }
 951
 952                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 953                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 954                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 955                         else
 956                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 957                 }
 958         } else {
 959                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 960                 usb_kill_anchored_urbs(&data->isoc_anchor);
 961
 962                 __set_isoc_interface(hdev, 0);
 963                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 964                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 965         }
 966 }
 967
 968 static void btusb_waker(struct work_struct *work)
 969 {
 970         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 971         int err;
 972
 973         err = usb_autopm_get_interface(data->intf);
 974         if (err < 0)
 975                 return;
 976
 977         usb_autopm_put_interface(data->intf);
 978 }
 979
 980 static int btusb_probe(struct usb_interface *intf,
 981                                 const struct usb_device_id *id)
 982 {
 983         struct usb_endpoint_descriptor *ep_desc;
 984         struct btusb_data *data;
 985         struct hci_dev *hdev;
 986         int i, err;
 987
 988         BT_DBG("intf %p id %p", intf, id);
 989
 990         /* interface numbers are hardcoded in the spec */
 991         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 992                 return -ENODEV;
 993
 994         if (!id->driver_info) {
 995                 const struct usb_device_id *match;
 996                 match = usb_match_id(intf, blacklist_table);
 997                 if (match)
 998                         id = match;
 999         }
1000
1001         if (id->driver_info == BTUSB_IGNORE)
1002                 return -ENODEV;
1003
1004         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1005                 return -ENODEV;
1006
1007         if (ignore_csr && id->driver_info & BTUSB_CSR)
1008                 return -ENODEV;
1009
1010         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1011                 return -ENODEV;
1012
1013         if (id->driver_info & BTUSB_ATH3012) {
1014                 struct usb_device *udev = interface_to_usbdev(intf);
1015
1016                 /* Old firmware would otherwise let ath3k driver load
1017                  * patch and sysconfig files */
1018                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1019                         return -ENODEV;
1020         }
1021
1022         data = kzalloc(sizeof(*data), GFP_KERNEL);
1023         if (!data)
1024                 return -ENOMEM;
1025
1026         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1027                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1028
1029                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1030                         data->intr_ep = ep_desc;
1031                         continue;
1032                 }
1033
1034                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1035                         data->bulk_tx_ep = ep_desc;
1036                         continue;
1037                 }
1038
1039                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1040                         data->bulk_rx_ep = ep_desc;
1041                         continue;
1042                 }
1043         }
1044
1045         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
1046                 kfree(data);
1047                 return -ENODEV;
1048         }
1049
1050         data->cmdreq_type = USB_TYPE_CLASS;
1051
1052         data->udev = interface_to_usbdev(intf);
1053         data->intf = intf;
1054
1055         spin_lock_init(&data->lock);
1056
1057         INIT_WORK(&data->work, btusb_work);
1058         INIT_WORK(&data->waker, btusb_waker);
1059         spin_lock_init(&data->txlock);
1060
1061         init_usb_anchor(&data->tx_anchor);
1062         init_usb_anchor(&data->intr_anchor);
1063         init_usb_anchor(&data->bulk_anchor);
1064         init_usb_anchor(&data->isoc_anchor);
1065         init_usb_anchor(&data->deferred);
1066
1067         hdev = hci_alloc_dev();
1068         if (!hdev) {
1069                 kfree(data);
1070                 return -ENOMEM;
1071         }
1072
1073         hdev->bus = HCI_USB;
1074         hdev->driver_data = data;
1075
1076         data->hdev = hdev;
1077
1078         SET_HCIDEV_DEV(hdev, &intf->dev);
1079
1080         hdev->open     = btusb_open;
1081         hdev->close    = btusb_close;
1082         hdev->flush    = btusb_flush;
1083         hdev->send     = btusb_send_frame;
1084         hdev->destruct = btusb_destruct;
1085         hdev->notify   = btusb_notify;
1086
1087         hdev->owner = THIS_MODULE;
1088
1089         if (id->driver_info & BTUSB_INTEL_BOOT)
1090                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1091
1092         /* Interface numbers are hardcoded in the specification */
1093         data->isoc = usb_ifnum_to_if(data->udev, 1);
1094
1095         if (!reset)
1096                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1097
1098         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1099                 if (!disable_scofix)
1100                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1101         }
1102
1103         if (id->driver_info & BTUSB_BROKEN_ISOC)
1104                 data->isoc = NULL;
1105
1106         if (id->driver_info & BTUSB_DIGIANSWER) {
1107                 data->cmdreq_type = USB_TYPE_VENDOR;
1108                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1109         }
1110
1111         if (id->driver_info & BTUSB_CSR) {
1112                 struct usb_device *udev = data->udev;
1113
1114                 /* Old firmware would otherwise execute USB reset */
1115                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1116                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1117         }
1118
1119         if (id->driver_info & BTUSB_SNIFFER) {
1120                 struct usb_device *udev = data->udev;
1121
1122                 /* New sniffer firmware has crippled HCI interface */
1123                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1124                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1125
1126                 data->isoc = NULL;
1127         }
1128
1129         if (id->driver_info & BTUSB_BCM92035) {
1130                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1131                 struct sk_buff *skb;
1132
1133                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1134                 if (skb) {
1135                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1136                         skb_queue_tail(&hdev->driver_init, skb);
1137                 }
1138         }
1139
1140         if (data->isoc) {
1141                 err = usb_driver_claim_interface(&btusb_driver,
1142                                                         data->isoc, data);
1143                 if (err < 0) {
1144                         hci_free_dev(hdev);
1145                         kfree(data);
1146                         return err;
1147                 }
1148         }
1149
1150         err = hci_register_dev(hdev);
1151         if (err < 0) {
1152                 hci_free_dev(hdev);
1153                 kfree(data);
1154                 return err;
1155         }
1156
1157         usb_set_intfdata(intf, data);
1158
1159         return 0;
1160 }
1161
1162 static void btusb_disconnect(struct usb_interface *intf)
1163 {
1164         struct btusb_data *data = usb_get_intfdata(intf);
1165         struct hci_dev *hdev;
1166
1167         BT_DBG("intf %p", intf);
1168
1169         if (!data)
1170                 return;
1171
1172         hdev = data->hdev;
1173
1174         __hci_dev_hold(hdev);
1175
1176         usb_set_intfdata(data->intf, NULL);
1177
1178         if (data->isoc)
1179                 usb_set_intfdata(data->isoc, NULL);
1180
1181         hci_unregister_dev(hdev);
1182
1183         if (intf == data->isoc)
1184                 usb_driver_release_interface(&btusb_driver, data->intf);
1185         else if (data->isoc)
1186                 usb_driver_release_interface(&btusb_driver, data->isoc);
1187
1188         __hci_dev_put(hdev);
1189
1190         hci_free_dev(hdev);
1191 }
1192
1193 #ifdef CONFIG_PM
1194 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1195 {
1196         struct btusb_data *data = usb_get_intfdata(intf);
1197
1198         BT_DBG("intf %p", intf);
1199
1200         if (data->suspend_count++)
1201                 return 0;
1202
1203         spin_lock_irq(&data->txlock);
1204         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1205                 set_bit(BTUSB_SUSPENDING, &data->flags);
1206                 spin_unlock_irq(&data->txlock);
1207         } else {
1208                 spin_unlock_irq(&data->txlock);
1209                 data->suspend_count--;
1210                 return -EBUSY;
1211         }
1212
1213         cancel_work_sync(&data->work);
1214
1215         btusb_stop_traffic(data);
1216         usb_kill_anchored_urbs(&data->tx_anchor);
1217
1218         return 0;
1219 }
1220
1221 static void play_deferred(struct btusb_data *data)
1222 {
1223         struct urb *urb;
1224         int err;
1225
1226         while ((urb = usb_get_from_anchor(&data->deferred))) {
1227                 err = usb_submit_urb(urb, GFP_ATOMIC);
1228                 if (err < 0)
1229                         break;
1230
1231                 data->tx_in_flight++;
1232         }
1233         usb_scuttle_anchored_urbs(&data->deferred);
1234 }
1235
1236 static int btusb_resume(struct usb_interface *intf)
1237 {
1238         struct btusb_data *data = usb_get_intfdata(intf);
1239         struct hci_dev *hdev = data->hdev;
1240         int err = 0;
1241
1242         BT_DBG("intf %p", intf);
1243
1244         if (--data->suspend_count)
1245                 return 0;
1246
1247         if (!test_bit(HCI_RUNNING, &hdev->flags))
1248                 goto done;
1249
1250         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1251                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1252                 if (err < 0) {
1253                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1254                         goto failed;
1255                 }
1256         }
1257
1258         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1259                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1260                 if (err < 0) {
1261                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1262                         goto failed;
1263                 }
1264
1265                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1266         }
1267
1268         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1269                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1270                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1271                 else
1272                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1273         }
1274
1275         spin_lock_irq(&data->txlock);
1276         play_deferred(data);
1277         clear_bit(BTUSB_SUSPENDING, &data->flags);
1278         spin_unlock_irq(&data->txlock);
1279         schedule_work(&data->work);
1280
1281         return 0;
1282
1283 failed:
1284         usb_scuttle_anchored_urbs(&data->deferred);
1285 done:
1286         spin_lock_irq(&data->txlock);
1287         clear_bit(BTUSB_SUSPENDING, &data->flags);
1288         spin_unlock_irq(&data->txlock);
1289
1290         return err;
1291 }
1292 #endif
1293
1294 static struct usb_driver btusb_driver = {
1295         .name           = "btusb",
1296         .probe          = btusb_probe,
1297         .disconnect     = btusb_disconnect,
1298 #ifdef CONFIG_PM
1299         .suspend        = btusb_suspend,
1300         .resume         = btusb_resume,
1301 #endif
1302         .id_table       = btusb_table,
1303         .supports_autosuspend = 1,
1304 };
1305
1306 static int __init btusb_init(void)
1307 {
1308         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1309
1310         return usb_register(&btusb_driver);
1311 }
1312
1313 static void __exit btusb_exit(void)
1314 {
1315         usb_deregister(&btusb_driver);
1316 }
1317
1318 module_init(btusb_init);
1319 module_exit(btusb_exit);
1320
1321 module_param(ignore_dga, bool, 0644);
1322 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1323
1324 module_param(ignore_csr, bool, 0644);
1325 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1326
1327 module_param(ignore_sniffer, bool, 0644);
1328 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1329
1330 module_param(disable_scofix, bool, 0644);
1331 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1332
1333 module_param(force_scofix, bool, 0644);
1334 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1335
1336 module_param(reset, bool, 0644);
1337 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1338
1339 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1340 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1341 MODULE_VERSION(VERSION);
1342 MODULE_LICENSE("GPL");