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         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 199
 200         /* Atheros AR5BBU12 with sflash firmware */
 201         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 202
 203         /* Atheros AR5BBU12 with sflash firmware */
 204         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 206
 207         /* Broadcom BCM2035 */
 208         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 209         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 210         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 211
 212         /* Broadcom BCM2045 */
 213         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 214         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 215
 216         /* IBM/Lenovo ThinkPad with Broadcom chip */
 217         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 218         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 219
 220         /* HP laptop with Broadcom chip */
 221         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 222
 223         /* Dell laptop with Broadcom chip */
 224         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 225
 226         /* Dell Wireless 370 and 410 devices */
 227         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 228         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 229
 230         /* Belkin F8T012 and F8T013 devices */
 231         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 232         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 233
 234         /* Asus WL-BTD202 device */
 235         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 236
 237         /* Kensington Bluetooth USB adapter */
 238         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 239
 240         /* RTX Telecom based adapters with buggy SCO support */
 241         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 242         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 243
 244         /* CONWISE Technology based adapters with buggy SCO support */
 245         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 246
 247         /* Digianswer devices */
 248         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 249         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 250
 251         /* CSR BlueCore Bluetooth Sniffer */
 252         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 253
 254         /* Frontline ComProbe Bluetooth Sniffer */
 255         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 256
 257         { }     /* Terminating entry */
 258 };
 259
 260 #define BTUSB_MAX_ISOC_FRAMES   10
 261
 262 #define BTUSB_INTR_RUNNING      0
 263 #define BTUSB_BULK_RUNNING      1
 264 #define BTUSB_ISOC_RUNNING      2
 265 #define BTUSB_SUSPENDING        3
 266 #define BTUSB_DID_ISO_RESUME    4
 267
 268 struct btusb_data {
 269         struct hci_dev       *hdev;
 270         struct usb_device    *udev;
 271         struct usb_interface *intf;
 272         struct usb_interface *isoc;
 273
 274         spinlock_t lock;
 275
 276         unsigned long flags;
 277
 278         struct work_struct work;
 279         struct work_struct waker;
 280
 281         struct usb_anchor tx_anchor;
 282         struct usb_anchor intr_anchor;
 283         struct usb_anchor bulk_anchor;
 284         struct usb_anchor isoc_anchor;
 285         struct usb_anchor deferred;
 286         int tx_in_flight;
 287         spinlock_t txlock;
 288
 289         struct usb_endpoint_descriptor *intr_ep;
 290         struct usb_endpoint_descriptor *bulk_tx_ep;
 291         struct usb_endpoint_descriptor *bulk_rx_ep;
 292         struct usb_endpoint_descriptor *isoc_tx_ep;
 293         struct usb_endpoint_descriptor *isoc_rx_ep;
 294
 295         __u8 cmdreq_type;
 296
 297         unsigned int sco_num;
 298         int isoc_altsetting;
 299         int suspend_count;
 300 };
 301
 302 static int inc_tx(struct btusb_data *data)
 303 {
 304         unsigned long flags;
 305         int rv;
 306
 307         spin_lock_irqsave(&data->txlock, flags);
 308         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 309         if (!rv)
 310                 data->tx_in_flight++;
 311         spin_unlock_irqrestore(&data->txlock, flags);
 312
 313         return rv;
 314 }
 315
 316 static void btusb_intr_complete(struct urb *urb)
 317 {
 318         struct hci_dev *hdev = urb->context;
 319         struct btusb_data *data = hdev->driver_data;
 320         int err;
 321
 322         BT_DBG("%s urb %p status %d count %d", hdev->name,
 323                                         urb, urb->status, urb->actual_length);
 324
 325         if (!test_bit(HCI_RUNNING, &hdev->flags))
 326                 return;
 327
 328         if (urb->status == 0) {
 329                 hdev->stat.byte_rx += urb->actual_length;
 330
 331                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 332                                                 urb->transfer_buffer,
 333                                                 urb->actual_length) < 0) {
 334                         BT_ERR("%s corrupted event packet", hdev->name);
 335                         hdev->stat.err_rx++;
 336                 }
 337         } else if (urb->status == -ENOENT) {
 338                 /* Avoid suspend failed when usb_kill_urb */
 339                 return;
 340         }
 341
 342         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 343                 return;
 344
 345         usb_mark_last_busy(data->udev);
 346         usb_anchor_urb(urb, &data->intr_anchor);
 347
 348         err = usb_submit_urb(urb, GFP_ATOMIC);
 349         if (err < 0) {
 350                 /* -EPERM: urb is being killed;
 351                  * -ENODEV: device got disconnected */
 352                 if (err != -EPERM && err != -ENODEV)
 353                         BT_ERR("%s urb %p failed to resubmit (%d)",
 354                                                 hdev->name, urb, -err);
 355                 usb_unanchor_urb(urb);
 356         }
 357 }
 358
 359 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 360 {
 361         struct btusb_data *data = hdev->driver_data;
 362         struct urb *urb;
 363         unsigned char *buf;
 364         unsigned int pipe;
 365         int err, size;
 366
 367         BT_DBG("%s", hdev->name);
 368
 369         if (!data->intr_ep)
 370                 return -ENODEV;
 371
 372         urb = usb_alloc_urb(0, mem_flags);
 373         if (!urb)
 374                 return -ENOMEM;
 375
 376         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 377
 378         buf = kmalloc(size, mem_flags);
 379         if (!buf) {
 380                 usb_free_urb(urb);
 381                 return -ENOMEM;
 382         }
 383
 384         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 385
 386         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 387                                                 btusb_intr_complete, hdev,
 388                                                 data->intr_ep->bInterval);
 389
 390         urb->transfer_flags |= URB_FREE_BUFFER;
 391
 392         usb_anchor_urb(urb, &data->intr_anchor);
 393
 394         err = usb_submit_urb(urb, mem_flags);
 395         if (err < 0) {
 396                 BT_ERR("%s urb %p submission failed (%d)",
 397                                                 hdev->name, urb, -err);
 398                 usb_unanchor_urb(urb);
 399         }
 400
 401         usb_free_urb(urb);
 402
 403         return err;
 404 }
 405
 406 static void btusb_bulk_complete(struct urb *urb)
 407 {
 408         struct hci_dev *hdev = urb->context;
 409         struct btusb_data *data = hdev->driver_data;
 410         int err;
 411
 412         BT_DBG("%s urb %p status %d count %d", hdev->name,
 413                                         urb, urb->status, urb->actual_length);
 414
 415         if (!test_bit(HCI_RUNNING, &hdev->flags))
 416                 return;
 417
 418         if (urb->status == 0) {
 419                 hdev->stat.byte_rx += urb->actual_length;
 420
 421                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 422                                                 urb->transfer_buffer,
 423                                                 urb->actual_length) < 0) {
 424                         BT_ERR("%s corrupted ACL packet", hdev->name);
 425                         hdev->stat.err_rx++;
 426                 }
 427         } else if (urb->status == -ENOENT) {
 428                 /* Avoid suspend failed when usb_kill_urb */
 429                 return;
 430         }
 431
 432         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 433                 return;
 434
 435         usb_anchor_urb(urb, &data->bulk_anchor);
 436         usb_mark_last_busy(data->udev);
 437
 438         err = usb_submit_urb(urb, GFP_ATOMIC);
 439         if (err < 0) {
 440                 /* -EPERM: urb is being killed;
 441                  * -ENODEV: device got disconnected */
 442                 if (err != -EPERM && err != -ENODEV)
 443                         BT_ERR("%s urb %p failed to resubmit (%d)",
 444                                                 hdev->name, urb, -err);
 445                 usb_unanchor_urb(urb);
 446         }
 447 }
 448
 449 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 450 {
 451         struct btusb_data *data = hdev->driver_data;
 452         struct urb *urb;
 453         unsigned char *buf;
 454         unsigned int pipe;
 455         int err, size = HCI_MAX_FRAME_SIZE;
 456
 457         BT_DBG("%s", hdev->name);
 458
 459         if (!data->bulk_rx_ep)
 460                 return -ENODEV;
 461
 462         urb = usb_alloc_urb(0, mem_flags);
 463         if (!urb)
 464                 return -ENOMEM;
 465
 466         buf = kmalloc(size, mem_flags);
 467         if (!buf) {
 468                 usb_free_urb(urb);
 469                 return -ENOMEM;
 470         }
 471
 472         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 473
 474         usb_fill_bulk_urb(urb, data->udev, pipe,
 475                                         buf, size, btusb_bulk_complete, hdev);
 476
 477         urb->transfer_flags |= URB_FREE_BUFFER;
 478
 479         usb_mark_last_busy(data->udev);
 480         usb_anchor_urb(urb, &data->bulk_anchor);
 481
 482         err = usb_submit_urb(urb, mem_flags);
 483         if (err < 0) {
 484                 BT_ERR("%s urb %p submission failed (%d)",
 485                                                 hdev->name, urb, -err);
 486                 usb_unanchor_urb(urb);
 487         }
 488
 489         usb_free_urb(urb);
 490
 491         return err;
 492 }
 493
 494 static void btusb_isoc_complete(struct urb *urb)
 495 {
 496         struct hci_dev *hdev = urb->context;
 497         struct btusb_data *data = hdev->driver_data;
 498         int i, err;
 499
 500         BT_DBG("%s urb %p status %d count %d", hdev->name,
 501                                         urb, urb->status, urb->actual_length);
 502
 503         if (!test_bit(HCI_RUNNING, &hdev->flags))
 504                 return;
 505
 506         if (urb->status == 0) {
 507                 for (i = 0; i < urb->number_of_packets; i++) {
 508                         unsigned int offset = urb->iso_frame_desc[i].offset;
 509                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 510
 511                         if (urb->iso_frame_desc[i].status)
 512                                 continue;
 513
 514                         hdev->stat.byte_rx += length;
 515
 516                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 517                                                 urb->transfer_buffer + offset,
 518                                                                 length) < 0) {
 519                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 520                                 hdev->stat.err_rx++;
 521                         }
 522                 }
 523         } else if (urb->status == -ENOENT) {
 524                 /* Avoid suspend failed when usb_kill_urb */
 525                 return;
 526         }
 527
 528         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 529                 return;
 530
 531         usb_anchor_urb(urb, &data->isoc_anchor);
 532
 533         err = usb_submit_urb(urb, GFP_ATOMIC);
 534         if (err < 0) {
 535                 /* -EPERM: urb is being killed;
 536                  * -ENODEV: device got disconnected */
 537                 if (err != -EPERM && err != -ENODEV)
 538                         BT_ERR("%s urb %p failed to resubmit (%d)",
 539                                                 hdev->name, urb, -err);
 540                 usb_unanchor_urb(urb);
 541         }
 542 }
 543
 544 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 545 {
 546         int i, offset = 0;
 547
 548         BT_DBG("len %d mtu %d", len, mtu);
 549
 550         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 551                                         i++, offset += mtu, len -= mtu) {
 552                 urb->iso_frame_desc[i].offset = offset;
 553                 urb->iso_frame_desc[i].length = mtu;
 554         }
 555
 556         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 557                 urb->iso_frame_desc[i].offset = offset;
 558                 urb->iso_frame_desc[i].length = len;
 559                 i++;
 560         }
 561
 562         urb->number_of_packets = i;
 563 }
 564
 565 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 566 {
 567         struct btusb_data *data = hdev->driver_data;
 568         struct urb *urb;
 569         unsigned char *buf;
 570         unsigned int pipe;
 571         int err, size;
 572
 573         BT_DBG("%s", hdev->name);
 574
 575         if (!data->isoc_rx_ep)
 576                 return -ENODEV;
 577
 578         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 579         if (!urb)
 580                 return -ENOMEM;
 581
 582         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 583                                                 BTUSB_MAX_ISOC_FRAMES;
 584
 585         buf = kmalloc(size, mem_flags);
 586         if (!buf) {
 587                 usb_free_urb(urb);
 588                 return -ENOMEM;
 589         }
 590
 591         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 592
 593         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 594                                 hdev, data->isoc_rx_ep->bInterval);
 595
 596         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 597
 598         __fill_isoc_descriptor(urb, size,
 599                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 600
 601         usb_anchor_urb(urb, &data->isoc_anchor);
 602
 603         err = usb_submit_urb(urb, mem_flags);
 604         if (err < 0) {
 605                 BT_ERR("%s urb %p submission failed (%d)",
 606                                                 hdev->name, urb, -err);
 607                 usb_unanchor_urb(urb);
 608         }
 609
 610         usb_free_urb(urb);
 611
 612         return err;
 613 }
 614
 615 static void btusb_tx_complete(struct urb *urb)
 616 {
 617         struct sk_buff *skb = urb->context;
 618         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 619         struct btusb_data *data = hdev->driver_data;
 620
 621         BT_DBG("%s urb %p status %d count %d", hdev->name,
 622                                         urb, urb->status, urb->actual_length);
 623
 624         if (!test_bit(HCI_RUNNING, &hdev->flags))
 625                 goto done;
 626
 627         if (!urb->status)
 628                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 629         else
 630                 hdev->stat.err_tx++;
 631
 632 done:
 633         spin_lock(&data->txlock);
 634         data->tx_in_flight--;
 635         spin_unlock(&data->txlock);
 636
 637         kfree(urb->setup_packet);
 638
 639         kfree_skb(skb);
 640 }
 641
 642 static void btusb_isoc_tx_complete(struct urb *urb)
 643 {
 644         struct sk_buff *skb = urb->context;
 645         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 646
 647         BT_DBG("%s urb %p status %d count %d", hdev->name,
 648                                         urb, urb->status, urb->actual_length);
 649
 650         if (!test_bit(HCI_RUNNING, &hdev->flags))
 651                 goto done;
 652
 653         if (!urb->status)
 654                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 655         else
 656                 hdev->stat.err_tx++;
 657
 658 done:
 659         kfree(urb->setup_packet);
 660
 661         kfree_skb(skb);
 662 }
 663
 664 static int btusb_open(struct hci_dev *hdev)
 665 {
 666         struct btusb_data *data = hdev->driver_data;
 667         int err;
 668
 669         BT_DBG("%s", hdev->name);
 670
 671         err = usb_autopm_get_interface(data->intf);
 672         if (err < 0)
 673                 return err;
 674
 675         data->intf->needs_remote_wakeup = 1;
 676
 677         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 678                 goto done;
 679
 680         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 681                 goto done;
 682
 683         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 684         if (err < 0)
 685                 goto failed;
 686
 687         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 688         if (err < 0) {
 689                 usb_kill_anchored_urbs(&data->intr_anchor);
 690                 goto failed;
 691         }
 692
 693         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 694         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 695
 696 done:
 697         usb_autopm_put_interface(data->intf);
 698         return 0;
 699
 700 failed:
 701         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 702         clear_bit(HCI_RUNNING, &hdev->flags);
 703         usb_autopm_put_interface(data->intf);
 704         return err;
 705 }
 706
 707 static void btusb_stop_traffic(struct btusb_data *data)
 708 {
 709         usb_kill_anchored_urbs(&data->intr_anchor);
 710         usb_kill_anchored_urbs(&data->bulk_anchor);
 711         usb_kill_anchored_urbs(&data->isoc_anchor);
 712 }
 713
 714 static int btusb_close(struct hci_dev *hdev)
 715 {
 716         struct btusb_data *data = hdev->driver_data;
 717         int err;
 718
 719         BT_DBG("%s", hdev->name);
 720
 721         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 722                 return 0;
 723
 724         cancel_work_sync(&data->work);
 725         cancel_work_sync(&data->waker);
 726
 727         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 728         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 729         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 730
 731         btusb_stop_traffic(data);
 732         err = usb_autopm_get_interface(data->intf);
 733         if (err < 0)
 734                 goto failed;
 735
 736         data->intf->needs_remote_wakeup = 0;
 737         usb_autopm_put_interface(data->intf);
 738
 739 failed:
 740         usb_scuttle_anchored_urbs(&data->deferred);
 741         return 0;
 742 }
 743
 744 static int btusb_flush(struct hci_dev *hdev)
 745 {
 746         struct btusb_data *data = hdev->driver_data;
 747
 748         BT_DBG("%s", hdev->name);
 749
 750         usb_kill_anchored_urbs(&data->tx_anchor);
 751
 752         return 0;
 753 }
 754
 755 static int btusb_send_frame(struct sk_buff *skb)
 756 {
 757         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 758         struct btusb_data *data = hdev->driver_data;
 759         struct usb_ctrlrequest *dr;
 760         struct urb *urb;
 761         unsigned int pipe;
 762         int err;
 763
 764         BT_DBG("%s", hdev->name);
 765
 766         if (!test_bit(HCI_RUNNING, &hdev->flags))
 767                 return -EBUSY;
 768
 769         switch (bt_cb(skb)->pkt_type) {
 770         case HCI_COMMAND_PKT:
 771                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 772                 if (!urb)
 773                         return -ENOMEM;
 774
 775                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 776                 if (!dr) {
 777                         usb_free_urb(urb);
 778                         return -ENOMEM;
 779                 }
 780
 781                 dr->bRequestType = data->cmdreq_type;
 782                 dr->bRequest     = 0;
 783                 dr->wIndex       = 0;
 784                 dr->wValue       = 0;
 785                 dr->wLength      = __cpu_to_le16(skb->len);
 786
 787                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 788
 789                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 790                                 skb->data, skb->len, btusb_tx_complete, skb);
 791
 792                 hdev->stat.cmd_tx++;
 793                 break;
 794
 795         case HCI_ACLDATA_PKT:
 796                 if (!data->bulk_tx_ep)
 797                         return -ENODEV;
 798
 799                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 800                 if (!urb)
 801                         return -ENOMEM;
 802
 803                 pipe = usb_sndbulkpipe(data->udev,
 804                                         data->bulk_tx_ep->bEndpointAddress);
 805
 806                 usb_fill_bulk_urb(urb, data->udev, pipe,
 807                                 skb->data, skb->len, btusb_tx_complete, skb);
 808
 809                 hdev->stat.acl_tx++;
 810                 break;
 811
 812         case HCI_SCODATA_PKT:
 813                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 814                         return -ENODEV;
 815
 816                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 817                 if (!urb)
 818                         return -ENOMEM;
 819
 820                 pipe = usb_sndisocpipe(data->udev,
 821                                         data->isoc_tx_ep->bEndpointAddress);
 822
 823                 usb_fill_int_urb(urb, data->udev, pipe,
 824                                 skb->data, skb->len, btusb_isoc_tx_complete,
 825                                 skb, data->isoc_tx_ep->bInterval);
 826
 827                 urb->transfer_flags  = URB_ISO_ASAP;
 828
 829                 __fill_isoc_descriptor(urb, skb->len,
 830                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 831
 832                 hdev->stat.sco_tx++;
 833                 goto skip_waking;
 834
 835         default:
 836                 return -EILSEQ;
 837         }
 838
 839         err = inc_tx(data);
 840         if (err) {
 841                 usb_anchor_urb(urb, &data->deferred);
 842                 schedule_work(&data->waker);
 843                 err = 0;
 844                 goto done;
 845         }
 846
 847 skip_waking:
 848         usb_anchor_urb(urb, &data->tx_anchor);
 849
 850         err = usb_submit_urb(urb, GFP_ATOMIC);
 851         if (err < 0) {
 852                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 853                 kfree(urb->setup_packet);
 854                 usb_unanchor_urb(urb);
 855         } else {
 856                 usb_mark_last_busy(data->udev);
 857         }
 858
 859 done:
 860         usb_free_urb(urb);
 861         return err;
 862 }
 863
 864 static void btusb_destruct(struct hci_dev *hdev)
 865 {
 866         struct btusb_data *data = hdev->driver_data;
 867
 868         BT_DBG("%s", hdev->name);
 869
 870         kfree(data);
 871 }
 872
 873 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 874 {
 875         struct btusb_data *data = hdev->driver_data;
 876
 877         BT_DBG("%s evt %d", hdev->name, evt);
 878
 879         if (hdev->conn_hash.sco_num != data->sco_num) {
 880                 data->sco_num = hdev->conn_hash.sco_num;
 881                 schedule_work(&data->work);
 882         }
 883 }
 884
 885 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 886 {
 887         struct btusb_data *data = hdev->driver_data;
 888         struct usb_interface *intf = data->isoc;
 889         struct usb_endpoint_descriptor *ep_desc;
 890         int i, err;
 891
 892         if (!data->isoc)
 893                 return -ENODEV;
 894
 895         err = usb_set_interface(data->udev, 1, altsetting);
 896         if (err < 0) {
 897                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 898                 return err;
 899         }
 900
 901         data->isoc_altsetting = altsetting;
 902
 903         data->isoc_tx_ep = NULL;
 904         data->isoc_rx_ep = NULL;
 905
 906         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 907                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 908
 909                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 910                         data->isoc_tx_ep = ep_desc;
 911                         continue;
 912                 }
 913
 914                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 915                         data->isoc_rx_ep = ep_desc;
 916                         continue;
 917                 }
 918         }
 919
 920         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 921                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 922                 return -ENODEV;
 923         }
 924
 925         return 0;
 926 }
 927
 928 static void btusb_work(struct work_struct *work)
 929 {
 930         struct btusb_data *data = container_of(work, struct btusb_data, work);
 931         struct hci_dev *hdev = data->hdev;
 932         int err;
 933
 934         if (hdev->conn_hash.sco_num > 0) {
 935                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 936                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 937                         if (err < 0) {
 938                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 939                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 940                                 return;
 941                         }
 942
 943                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 944                 }
 945                 if (data->isoc_altsetting != 2) {
 946                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 947                         usb_kill_anchored_urbs(&data->isoc_anchor);
 948
 949                         if (__set_isoc_interface(hdev, 2) < 0)
 950                                 return;
 951                 }
 952
 953                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 954                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 955                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 956                         else
 957                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 958                 }
 959         } else {
 960                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 961                 usb_kill_anchored_urbs(&data->isoc_anchor);
 962
 963                 __set_isoc_interface(hdev, 0);
 964                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 965                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 966         }
 967 }
 968
 969 static void btusb_waker(struct work_struct *work)
 970 {
 971         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 972         int err;
 973
 974         err = usb_autopm_get_interface(data->intf);
 975         if (err < 0)
 976                 return;
 977
 978         usb_autopm_put_interface(data->intf);
 979 }
 980
 981 static int btusb_probe(struct usb_interface *intf,
 982                                 const struct usb_device_id *id)
 983 {
 984         struct usb_endpoint_descriptor *ep_desc;
 985         struct btusb_data *data;
 986         struct hci_dev *hdev;
 987         int i, err;
 988
 989         BT_DBG("intf %p id %p", intf, id);
 990
 991         /* interface numbers are hardcoded in the spec */
 992         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 993                 return -ENODEV;
 994
 995         if (!id->driver_info) {
 996                 const struct usb_device_id *match;
 997                 match = usb_match_id(intf, blacklist_table);
 998                 if (match)
 999                         id = match;
1000         }
1001
1002         if (id->driver_info == BTUSB_IGNORE)
1003                 return -ENODEV;
1004
1005         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1006                 return -ENODEV;
1007
1008         if (ignore_csr && id->driver_info & BTUSB_CSR)
1009                 return -ENODEV;
1010
1011         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1012                 return -ENODEV;
1013
1014         if (id->driver_info & BTUSB_ATH3012) {
1015                 struct usb_device *udev = interface_to_usbdev(intf);
1016
1017                 /* Old firmware would otherwise let ath3k driver load
1018                  * patch and sysconfig files */
1019                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1020                         return -ENODEV;
1021         }
1022
1023         data = kzalloc(sizeof(*data), GFP_KERNEL);
1024         if (!data)
1025                 return -ENOMEM;
1026
1027         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1028                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1029
1030                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1031                         data->intr_ep = ep_desc;
1032                         continue;
1033                 }
1034
1035                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1036                         data->bulk_tx_ep = ep_desc;
1037                         continue;
1038                 }
1039
1040                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1041                         data->bulk_rx_ep = ep_desc;
1042                         continue;
1043                 }
1044         }
1045
1046         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
1047                 kfree(data);
1048                 return -ENODEV;
1049         }
1050
1051         data->cmdreq_type = USB_TYPE_CLASS;
1052
1053         data->udev = interface_to_usbdev(intf);
1054         data->intf = intf;
1055
1056         spin_lock_init(&data->lock);
1057
1058         INIT_WORK(&data->work, btusb_work);
1059         INIT_WORK(&data->waker, btusb_waker);
1060         spin_lock_init(&data->txlock);
1061
1062         init_usb_anchor(&data->tx_anchor);
1063         init_usb_anchor(&data->intr_anchor);
1064         init_usb_anchor(&data->bulk_anchor);
1065         init_usb_anchor(&data->isoc_anchor);
1066         init_usb_anchor(&data->deferred);
1067
1068         hdev = hci_alloc_dev();
1069         if (!hdev) {
1070                 kfree(data);
1071                 return -ENOMEM;
1072         }
1073
1074         hdev->bus = HCI_USB;
1075         hdev->driver_data = data;
1076
1077         data->hdev = hdev;
1078
1079         SET_HCIDEV_DEV(hdev, &intf->dev);
1080
1081         hdev->open     = btusb_open;
1082         hdev->close    = btusb_close;
1083         hdev->flush    = btusb_flush;
1084         hdev->send     = btusb_send_frame;
1085         hdev->destruct = btusb_destruct;
1086         hdev->notify   = btusb_notify;
1087
1088         hdev->owner = THIS_MODULE;
1089
1090         if (id->driver_info & BTUSB_INTEL_BOOT)
1091                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1092
1093         /* Interface numbers are hardcoded in the specification */
1094         data->isoc = usb_ifnum_to_if(data->udev, 1);
1095
1096         if (!reset)
1097                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1098
1099         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1100                 if (!disable_scofix)
1101                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1102         }
1103
1104         if (id->driver_info & BTUSB_BROKEN_ISOC)
1105                 data->isoc = NULL;
1106
1107         if (id->driver_info & BTUSB_DIGIANSWER) {
1108                 data->cmdreq_type = USB_TYPE_VENDOR;
1109                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1110         }
1111
1112         if (id->driver_info & BTUSB_CSR) {
1113                 struct usb_device *udev = data->udev;
1114
1115                 /* Old firmware would otherwise execute USB reset */
1116                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1117                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1118         }
1119
1120         if (id->driver_info & BTUSB_SNIFFER) {
1121                 struct usb_device *udev = data->udev;
1122
1123                 /* New sniffer firmware has crippled HCI interface */
1124                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1125                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1126
1127                 data->isoc = NULL;
1128         }
1129
1130         if (id->driver_info & BTUSB_BCM92035) {
1131                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1132                 struct sk_buff *skb;
1133
1134                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1135                 if (skb) {
1136                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1137                         skb_queue_tail(&hdev->driver_init, skb);
1138                 }
1139         }
1140
1141         if (data->isoc) {
1142                 err = usb_driver_claim_interface(&btusb_driver,
1143                                                         data->isoc, data);
1144                 if (err < 0) {
1145                         hci_free_dev(hdev);
1146                         kfree(data);
1147                         return err;
1148                 }
1149         }
1150
1151         err = hci_register_dev(hdev);
1152         if (err < 0) {
1153                 hci_free_dev(hdev);
1154                 kfree(data);
1155                 return err;
1156         }
1157
1158         usb_set_intfdata(intf, data);
1159
1160         return 0;
1161 }
1162
1163 static void btusb_disconnect(struct usb_interface *intf)
1164 {
1165         struct btusb_data *data = usb_get_intfdata(intf);
1166         struct hci_dev *hdev;
1167
1168         BT_DBG("intf %p", intf);
1169
1170         if (!data)
1171                 return;
1172
1173         hdev = data->hdev;
1174
1175         __hci_dev_hold(hdev);
1176
1177         usb_set_intfdata(data->intf, NULL);
1178
1179         if (data->isoc)
1180                 usb_set_intfdata(data->isoc, NULL);
1181
1182         hci_unregister_dev(hdev);
1183
1184         if (intf == data->isoc)
1185                 usb_driver_release_interface(&btusb_driver, data->intf);
1186         else if (data->isoc)
1187                 usb_driver_release_interface(&btusb_driver, data->isoc);
1188
1189         __hci_dev_put(hdev);
1190
1191         hci_free_dev(hdev);
1192 }
1193
1194 #ifdef CONFIG_PM
1195 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1196 {
1197         struct btusb_data *data = usb_get_intfdata(intf);
1198
1199         BT_DBG("intf %p", intf);
1200
1201         if (data->suspend_count++)
1202                 return 0;
1203
1204         spin_lock_irq(&data->txlock);
1205         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1206                 set_bit(BTUSB_SUSPENDING, &data->flags);
1207                 spin_unlock_irq(&data->txlock);
1208         } else {
1209                 spin_unlock_irq(&data->txlock);
1210                 data->suspend_count--;
1211                 return -EBUSY;
1212         }
1213
1214         cancel_work_sync(&data->work);
1215
1216         btusb_stop_traffic(data);
1217         usb_kill_anchored_urbs(&data->tx_anchor);
1218
1219         return 0;
1220 }
1221
1222 static void play_deferred(struct btusb_data *data)
1223 {
1224         struct urb *urb;
1225         int err;
1226
1227         while ((urb = usb_get_from_anchor(&data->deferred))) {
1228                 err = usb_submit_urb(urb, GFP_ATOMIC);
1229                 if (err < 0)
1230                         break;
1231
1232                 data->tx_in_flight++;
1233         }
1234         usb_scuttle_anchored_urbs(&data->deferred);
1235 }
1236
1237 static int btusb_resume(struct usb_interface *intf)
1238 {
1239         struct btusb_data *data = usb_get_intfdata(intf);
1240         struct hci_dev *hdev = data->hdev;
1241         int err = 0;
1242
1243         BT_DBG("intf %p", intf);
1244
1245         if (--data->suspend_count)
1246                 return 0;
1247
1248         if (!test_bit(HCI_RUNNING, &hdev->flags))
1249                 goto done;
1250
1251         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1252                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1253                 if (err < 0) {
1254                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1255                         goto failed;
1256                 }
1257         }
1258
1259         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1260                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1261                 if (err < 0) {
1262                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1263                         goto failed;
1264                 }
1265
1266                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1267         }
1268
1269         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1270                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1271                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1272                 else
1273                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1274         }
1275
1276         spin_lock_irq(&data->txlock);
1277         play_deferred(data);
1278         clear_bit(BTUSB_SUSPENDING, &data->flags);
1279         spin_unlock_irq(&data->txlock);
1280         schedule_work(&data->work);
1281
1282         return 0;
1283
1284 failed:
1285         usb_scuttle_anchored_urbs(&data->deferred);
1286 done:
1287         spin_lock_irq(&data->txlock);
1288         clear_bit(BTUSB_SUSPENDING, &data->flags);
1289         spin_unlock_irq(&data->txlock);
1290
1291         return err;
1292 }
1293 #endif
1294
1295 static struct usb_driver btusb_driver = {
1296         .name           = "btusb",
1297         .probe          = btusb_probe,
1298         .disconnect     = btusb_disconnect,
1299 #ifdef CONFIG_PM
1300         .suspend        = btusb_suspend,
1301         .resume         = btusb_resume,
1302 #endif
1303         .id_table       = btusb_table,
1304         .supports_autosuspend = 1,
1305 };
1306
1307 static int __init btusb_init(void)
1308 {
1309         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1310
1311         return usb_register(&btusb_driver);
1312 }
1313
1314 static void __exit btusb_exit(void)
1315 {
1316         usb_deregister(&btusb_driver);
1317 }
1318
1319 module_init(btusb_init);
1320 module_exit(btusb_exit);
1321
1322 module_param(ignore_dga, bool, 0644);
1323 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1324
1325 module_param(ignore_csr, bool, 0644);
1326 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1327
1328 module_param(ignore_sniffer, bool, 0644);
1329 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1330
1331 module_param(disable_scofix, bool, 0644);
1332 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1333
1334 module_param(force_scofix, bool, 0644);
1335 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1336
1337 module_param(reset, bool, 0644);
1338 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1339
1340 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1341 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1342 MODULE_VERSION(VERSION);
1343 MODULE_LICENSE("GPL");