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