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