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