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