linux/drivers/bluetooth/bfusb.c
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   1/*
   2 *
   3 *  AVM BlueFRITZ! USB driver
   4 *
   5 *  Copyright (C) 2003-2006  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/module.h>
  25
  26#include <linux/kernel.h>
  27#include <linux/init.h>
  28#include <linux/slab.h>
  29#include <linux/types.h>
  30#include <linux/errno.h>
  31#include <linux/skbuff.h>
  32
  33#include <linux/device.h>
  34#include <linux/firmware.h>
  35
  36#include <linux/usb.h>
  37
  38#include <net/bluetooth/bluetooth.h>
  39#include <net/bluetooth/hci_core.h>
  40
  41#define VERSION "1.2"
  42
  43static struct usb_driver bfusb_driver;
  44
  45static const struct usb_device_id bfusb_table[] = {
  46        /* AVM BlueFRITZ! USB */
  47        { USB_DEVICE(0x057c, 0x2200) },
  48
  49        { }     /* Terminating entry */
  50};
  51
  52MODULE_DEVICE_TABLE(usb, bfusb_table);
  53
  54#define BFUSB_MAX_BLOCK_SIZE    256
  55
  56#define BFUSB_BLOCK_TIMEOUT     3000
  57
  58#define BFUSB_TX_PROCESS        1
  59#define BFUSB_TX_WAKEUP         2
  60
  61#define BFUSB_MAX_BULK_TX       2
  62#define BFUSB_MAX_BULK_RX       2
  63
  64struct bfusb_data {
  65        struct hci_dev          *hdev;
  66
  67        unsigned long           state;
  68
  69        struct usb_device       *udev;
  70
  71        unsigned int            bulk_in_ep;
  72        unsigned int            bulk_out_ep;
  73        unsigned int            bulk_pkt_size;
  74
  75        rwlock_t                lock;
  76
  77        struct sk_buff_head     transmit_q;
  78
  79        struct sk_buff          *reassembly;
  80
  81        atomic_t                pending_tx;
  82        struct sk_buff_head     pending_q;
  83        struct sk_buff_head     completed_q;
  84};
  85
  86struct bfusb_data_scb {
  87        struct urb *urb;
  88};
  89
  90static void bfusb_tx_complete(struct urb *urb);
  91static void bfusb_rx_complete(struct urb *urb);
  92
  93static struct urb *bfusb_get_completed(struct bfusb_data *data)
  94{
  95        struct sk_buff *skb;
  96        struct urb *urb = NULL;
  97
  98        BT_DBG("bfusb %p", data);
  99
 100        skb = skb_dequeue(&data->completed_q);
 101        if (skb) {
 102                urb = ((struct bfusb_data_scb *) skb->cb)->urb;
 103                kfree_skb(skb);
 104        }
 105
 106        return urb;
 107}
 108
 109static void bfusb_unlink_urbs(struct bfusb_data *data)
 110{
 111        struct sk_buff *skb;
 112        struct urb *urb;
 113
 114        BT_DBG("bfusb %p", data);
 115
 116        while ((skb = skb_dequeue(&data->pending_q))) {
 117                urb = ((struct bfusb_data_scb *) skb->cb)->urb;
 118                usb_kill_urb(urb);
 119                skb_queue_tail(&data->completed_q, skb);
 120        }
 121
 122        while ((urb = bfusb_get_completed(data)))
 123                usb_free_urb(urb);
 124}
 125
 126static int bfusb_send_bulk(struct bfusb_data *data, struct sk_buff *skb)
 127{
 128        struct bfusb_data_scb *scb = (void *) skb->cb;
 129        struct urb *urb = bfusb_get_completed(data);
 130        int err, pipe;
 131
 132        BT_DBG("bfusb %p skb %p len %d", data, skb, skb->len);
 133
 134        if (!urb) {
 135                urb = usb_alloc_urb(0, GFP_ATOMIC);
 136                if (!urb)
 137                        return -ENOMEM;
 138        }
 139
 140        pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep);
 141
 142        usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, skb->len,
 143                        bfusb_tx_complete, skb);
 144
 145        scb->urb = urb;
 146
 147        skb_queue_tail(&data->pending_q, skb);
 148
 149        err = usb_submit_urb(urb, GFP_ATOMIC);
 150        if (err) {
 151                BT_ERR("%s bulk tx submit failed urb %p err %d", 
 152                                        data->hdev->name, urb, err);
 153                skb_unlink(skb, &data->pending_q);
 154                usb_free_urb(urb);
 155        } else
 156                atomic_inc(&data->pending_tx);
 157
 158        return err;
 159}
 160
 161static void bfusb_tx_wakeup(struct bfusb_data *data)
 162{
 163        struct sk_buff *skb;
 164
 165        BT_DBG("bfusb %p", data);
 166
 167        if (test_and_set_bit(BFUSB_TX_PROCESS, &data->state)) {
 168                set_bit(BFUSB_TX_WAKEUP, &data->state);
 169                return;
 170        }
 171
 172        do {
 173                clear_bit(BFUSB_TX_WAKEUP, &data->state);
 174
 175                while ((atomic_read(&data->pending_tx) < BFUSB_MAX_BULK_TX) &&
 176                                (skb = skb_dequeue(&data->transmit_q))) {
 177                        if (bfusb_send_bulk(data, skb) < 0) {
 178                                skb_queue_head(&data->transmit_q, skb);
 179                                break;
 180                        }
 181                }
 182
 183        } while (test_bit(BFUSB_TX_WAKEUP, &data->state));
 184
 185        clear_bit(BFUSB_TX_PROCESS, &data->state);
 186}
 187
 188static void bfusb_tx_complete(struct urb *urb)
 189{
 190        struct sk_buff *skb = (struct sk_buff *) urb->context;
 191        struct bfusb_data *data = (struct bfusb_data *) skb->dev;
 192
 193        BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len);
 194
 195        atomic_dec(&data->pending_tx);
 196
 197        if (!test_bit(HCI_RUNNING, &data->hdev->flags))
 198                return;
 199
 200        if (!urb->status)
 201                data->hdev->stat.byte_tx += skb->len;
 202        else
 203                data->hdev->stat.err_tx++;
 204
 205        read_lock(&data->lock);
 206
 207        skb_unlink(skb, &data->pending_q);
 208        skb_queue_tail(&data->completed_q, skb);
 209
 210        bfusb_tx_wakeup(data);
 211
 212        read_unlock(&data->lock);
 213}
 214
 215
 216static int bfusb_rx_submit(struct bfusb_data *data, struct urb *urb)
 217{
 218        struct bfusb_data_scb *scb;
 219        struct sk_buff *skb;
 220        int err, pipe, size = HCI_MAX_FRAME_SIZE + 32;
 221
 222        BT_DBG("bfusb %p urb %p", data, urb);
 223
 224        if (!urb) {
 225                urb = usb_alloc_urb(0, GFP_ATOMIC);
 226                if (!urb)
 227                        return -ENOMEM;
 228        }
 229
 230        skb = bt_skb_alloc(size, GFP_ATOMIC);
 231        if (!skb) {
 232                usb_free_urb(urb);
 233                return -ENOMEM;
 234        }
 235
 236        skb->dev = (void *) data;
 237
 238        scb = (struct bfusb_data_scb *) skb->cb;
 239        scb->urb = urb;
 240
 241        pipe = usb_rcvbulkpipe(data->udev, data->bulk_in_ep);
 242
 243        usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, size,
 244                        bfusb_rx_complete, skb);
 245
 246        skb_queue_tail(&data->pending_q, skb);
 247
 248        err = usb_submit_urb(urb, GFP_ATOMIC);
 249        if (err) {
 250                BT_ERR("%s bulk rx submit failed urb %p err %d",
 251                                        data->hdev->name, urb, err);
 252                skb_unlink(skb, &data->pending_q);
 253                kfree_skb(skb);
 254                usb_free_urb(urb);
 255        }
 256
 257        return err;
 258}
 259
 260static inline int bfusb_recv_block(struct bfusb_data *data, int hdr, unsigned char *buf, int len)
 261{
 262        BT_DBG("bfusb %p hdr 0x%02x data %p len %d", data, hdr, buf, len);
 263
 264        if (hdr & 0x10) {
 265                BT_ERR("%s error in block", data->hdev->name);
 266                kfree_skb(data->reassembly);
 267                data->reassembly = NULL;
 268                return -EIO;
 269        }
 270
 271        if (hdr & 0x04) {
 272                struct sk_buff *skb;
 273                unsigned char pkt_type;
 274                int pkt_len = 0;
 275
 276                if (data->reassembly) {
 277                        BT_ERR("%s unexpected start block", data->hdev->name);
 278                        kfree_skb(data->reassembly);
 279                        data->reassembly = NULL;
 280                }
 281
 282                if (len < 1) {
 283                        BT_ERR("%s no packet type found", data->hdev->name);
 284                        return -EPROTO;
 285                }
 286
 287                pkt_type = *buf++; len--;
 288
 289                switch (pkt_type) {
 290                case HCI_EVENT_PKT:
 291                        if (len >= HCI_EVENT_HDR_SIZE) {
 292                                struct hci_event_hdr *hdr = (struct hci_event_hdr *) buf;
 293                                pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen;
 294                        } else {
 295                                BT_ERR("%s event block is too short", data->hdev->name);
 296                                return -EILSEQ;
 297                        }
 298                        break;
 299
 300                case HCI_ACLDATA_PKT:
 301                        if (len >= HCI_ACL_HDR_SIZE) {
 302                                struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) buf;
 303                                pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen);
 304                        } else {
 305                                BT_ERR("%s data block is too short", data->hdev->name);
 306                                return -EILSEQ;
 307                        }
 308                        break;
 309
 310                case HCI_SCODATA_PKT:
 311                        if (len >= HCI_SCO_HDR_SIZE) {
 312                                struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) buf;
 313                                pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen;
 314                        } else {
 315                                BT_ERR("%s audio block is too short", data->hdev->name);
 316                                return -EILSEQ;
 317                        }
 318                        break;
 319                }
 320
 321                skb = bt_skb_alloc(pkt_len, GFP_ATOMIC);
 322                if (!skb) {
 323                        BT_ERR("%s no memory for the packet", data->hdev->name);
 324                        return -ENOMEM;
 325                }
 326
 327                bt_cb(skb)->pkt_type = pkt_type;
 328
 329                data->reassembly = skb;
 330        } else {
 331                if (!data->reassembly) {
 332                        BT_ERR("%s unexpected continuation block", data->hdev->name);
 333                        return -EIO;
 334                }
 335        }
 336
 337        if (len > 0)
 338                memcpy(skb_put(data->reassembly, len), buf, len);
 339
 340        if (hdr & 0x08) {
 341                hci_recv_frame(data->hdev, data->reassembly);
 342                data->reassembly = NULL;
 343        }
 344
 345        return 0;
 346}
 347
 348static void bfusb_rx_complete(struct urb *urb)
 349{
 350        struct sk_buff *skb = (struct sk_buff *) urb->context;
 351        struct bfusb_data *data = (struct bfusb_data *) skb->dev;
 352        unsigned char *buf = urb->transfer_buffer;
 353        int count = urb->actual_length;
 354        int err, hdr, len;
 355
 356        BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len);
 357
 358        read_lock(&data->lock);
 359
 360        if (!test_bit(HCI_RUNNING, &data->hdev->flags))
 361                goto unlock;
 362
 363        if (urb->status || !count)
 364                goto resubmit;
 365
 366        data->hdev->stat.byte_rx += count;
 367
 368        skb_put(skb, count);
 369
 370        while (count) {
 371                hdr = buf[0] | (buf[1] << 8);
 372
 373                if (hdr & 0x4000) {
 374                        len = 0;
 375                        count -= 2;
 376                        buf   += 2;
 377                } else {
 378                        len = (buf[2] == 0) ? 256 : buf[2];
 379                        count -= 3;
 380                        buf   += 3;
 381                }
 382
 383                if (count < len) {
 384                        BT_ERR("%s block extends over URB buffer ranges",
 385                                        data->hdev->name);
 386                }
 387
 388                if ((hdr & 0xe1) == 0xc1)
 389                        bfusb_recv_block(data, hdr, buf, len);
 390
 391                count -= len;
 392                buf   += len;
 393        }
 394
 395        skb_unlink(skb, &data->pending_q);
 396        kfree_skb(skb);
 397
 398        bfusb_rx_submit(data, urb);
 399
 400        read_unlock(&data->lock);
 401
 402        return;
 403
 404resubmit:
 405        urb->dev = data->udev;
 406
 407        err = usb_submit_urb(urb, GFP_ATOMIC);
 408        if (err) {
 409                BT_ERR("%s bulk resubmit failed urb %p err %d",
 410                                        data->hdev->name, urb, err);
 411        }
 412
 413unlock:
 414        read_unlock(&data->lock);
 415}
 416
 417static int bfusb_open(struct hci_dev *hdev)
 418{
 419        struct bfusb_data *data = hci_get_drvdata(hdev);
 420        unsigned long flags;
 421        int i, err;
 422
 423        BT_DBG("hdev %p bfusb %p", hdev, data);
 424
 425        if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 426                return 0;
 427
 428        write_lock_irqsave(&data->lock, flags);
 429
 430        err = bfusb_rx_submit(data, NULL);
 431        if (!err) {
 432                for (i = 1; i < BFUSB_MAX_BULK_RX; i++)
 433                        bfusb_rx_submit(data, NULL);
 434        } else {
 435                clear_bit(HCI_RUNNING, &hdev->flags);
 436        }
 437
 438        write_unlock_irqrestore(&data->lock, flags);
 439
 440        return err;
 441}
 442
 443static int bfusb_flush(struct hci_dev *hdev)
 444{
 445        struct bfusb_data *data = hci_get_drvdata(hdev);
 446
 447        BT_DBG("hdev %p bfusb %p", hdev, data);
 448
 449        skb_queue_purge(&data->transmit_q);
 450
 451        return 0;
 452}
 453
 454static int bfusb_close(struct hci_dev *hdev)
 455{
 456        struct bfusb_data *data = hci_get_drvdata(hdev);
 457        unsigned long flags;
 458
 459        BT_DBG("hdev %p bfusb %p", hdev, data);
 460
 461        if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 462                return 0;
 463
 464        write_lock_irqsave(&data->lock, flags);
 465        write_unlock_irqrestore(&data->lock, flags);
 466
 467        bfusb_unlink_urbs(data);
 468        bfusb_flush(hdev);
 469
 470        return 0;
 471}
 472
 473static int bfusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 474{
 475        struct bfusb_data *data = hci_get_drvdata(hdev);
 476        struct sk_buff *nskb;
 477        unsigned char buf[3];
 478        int sent = 0, size, count;
 479
 480        BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, bt_cb(skb)->pkt_type, skb->len);
 481
 482        if (!test_bit(HCI_RUNNING, &hdev->flags))
 483                return -EBUSY;
 484
 485        switch (bt_cb(skb)->pkt_type) {
 486        case HCI_COMMAND_PKT:
 487                hdev->stat.cmd_tx++;
 488                break;
 489        case HCI_ACLDATA_PKT:
 490                hdev->stat.acl_tx++;
 491                break;
 492        case HCI_SCODATA_PKT:
 493                hdev->stat.sco_tx++;
 494                break;
 495        };
 496
 497        /* Prepend skb with frame type */
 498        memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
 499
 500        count = skb->len;
 501
 502        /* Max HCI frame size seems to be 1511 + 1 */
 503        nskb = bt_skb_alloc(count + 32, GFP_ATOMIC);
 504        if (!nskb) {
 505                BT_ERR("Can't allocate memory for new packet");
 506                return -ENOMEM;
 507        }
 508
 509        nskb->dev = (void *) data;
 510
 511        while (count) {
 512                size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE);
 513
 514                buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0);
 515                buf[1] = 0x00;
 516                buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size;
 517
 518                memcpy(skb_put(nskb, 3), buf, 3);
 519                skb_copy_from_linear_data_offset(skb, sent, skb_put(nskb, size), size);
 520
 521                sent  += size;
 522                count -= size;
 523        }
 524
 525        /* Don't send frame with multiple size of bulk max packet */
 526        if ((nskb->len % data->bulk_pkt_size) == 0) {
 527                buf[0] = 0xdd;
 528                buf[1] = 0x00;
 529                memcpy(skb_put(nskb, 2), buf, 2);
 530        }
 531
 532        read_lock(&data->lock);
 533
 534        skb_queue_tail(&data->transmit_q, nskb);
 535        bfusb_tx_wakeup(data);
 536
 537        read_unlock(&data->lock);
 538
 539        kfree_skb(skb);
 540
 541        return 0;
 542}
 543
 544static int bfusb_load_firmware(struct bfusb_data *data,
 545                               const unsigned char *firmware, int count)
 546{
 547        unsigned char *buf;
 548        int err, pipe, len, size, sent = 0;
 549
 550        BT_DBG("bfusb %p udev %p", data, data->udev);
 551
 552        BT_INFO("BlueFRITZ! USB loading firmware");
 553
 554        buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_KERNEL);
 555        if (!buf) {
 556                BT_ERR("Can't allocate memory chunk for firmware");
 557                return -ENOMEM;
 558        }
 559
 560        pipe = usb_sndctrlpipe(data->udev, 0);
 561
 562        if (usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
 563                                0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) {
 564                BT_ERR("Can't change to loading configuration");
 565                kfree(buf);
 566                return -EBUSY;
 567        }
 568
 569        data->udev->toggle[0] = data->udev->toggle[1] = 0;
 570
 571        pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep);
 572
 573        while (count) {
 574                size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3);
 575
 576                memcpy(buf, firmware + sent, size);
 577
 578                err = usb_bulk_msg(data->udev, pipe, buf, size,
 579                                        &len, BFUSB_BLOCK_TIMEOUT);
 580
 581                if (err || (len != size)) {
 582                        BT_ERR("Error in firmware loading");
 583                        goto error;
 584                }
 585
 586                sent  += size;
 587                count -= size;
 588        }
 589
 590        err = usb_bulk_msg(data->udev, pipe, NULL, 0,
 591                                        &len, BFUSB_BLOCK_TIMEOUT);
 592        if (err < 0) {
 593                BT_ERR("Error in null packet request");
 594                goto error;
 595        }
 596
 597        pipe = usb_sndctrlpipe(data->udev, 0);
 598
 599        err = usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
 600                                0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
 601        if (err < 0) {
 602                BT_ERR("Can't change to running configuration");
 603                goto error;
 604        }
 605
 606        data->udev->toggle[0] = data->udev->toggle[1] = 0;
 607
 608        BT_INFO("BlueFRITZ! USB device ready");
 609
 610        kfree(buf);
 611        return 0;
 612
 613error:
 614        kfree(buf);
 615
 616        pipe = usb_sndctrlpipe(data->udev, 0);
 617
 618        usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
 619                                0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
 620
 621        return err;
 622}
 623
 624static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
 625{
 626        const struct firmware *firmware;
 627        struct usb_device *udev = interface_to_usbdev(intf);
 628        struct usb_host_endpoint *bulk_out_ep;
 629        struct usb_host_endpoint *bulk_in_ep;
 630        struct hci_dev *hdev;
 631        struct bfusb_data *data;
 632
 633        BT_DBG("intf %p id %p", intf, id);
 634
 635        /* Check number of endpoints */
 636        if (intf->cur_altsetting->desc.bNumEndpoints < 2)
 637                return -EIO;
 638
 639        bulk_out_ep = &intf->cur_altsetting->endpoint[0];
 640        bulk_in_ep  = &intf->cur_altsetting->endpoint[1];
 641
 642        if (!bulk_out_ep || !bulk_in_ep) {
 643                BT_ERR("Bulk endpoints not found");
 644                goto done;
 645        }
 646
 647        /* Initialize control structure and load firmware */
 648        data = devm_kzalloc(&intf->dev, sizeof(struct bfusb_data), GFP_KERNEL);
 649        if (!data) {
 650                BT_ERR("Can't allocate memory for control structure");
 651                goto done;
 652        }
 653
 654        data->udev = udev;
 655        data->bulk_in_ep    = bulk_in_ep->desc.bEndpointAddress;
 656        data->bulk_out_ep   = bulk_out_ep->desc.bEndpointAddress;
 657        data->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize);
 658
 659        rwlock_init(&data->lock);
 660
 661        data->reassembly = NULL;
 662
 663        skb_queue_head_init(&data->transmit_q);
 664        skb_queue_head_init(&data->pending_q);
 665        skb_queue_head_init(&data->completed_q);
 666
 667        if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) {
 668                BT_ERR("Firmware request failed");
 669                goto done;
 670        }
 671
 672        BT_DBG("firmware data %p size %zu", firmware->data, firmware->size);
 673
 674        if (bfusb_load_firmware(data, firmware->data, firmware->size) < 0) {
 675                BT_ERR("Firmware loading failed");
 676                goto release;
 677        }
 678
 679        release_firmware(firmware);
 680
 681        /* Initialize and register HCI device */
 682        hdev = hci_alloc_dev();
 683        if (!hdev) {
 684                BT_ERR("Can't allocate HCI device");
 685                goto done;
 686        }
 687
 688        data->hdev = hdev;
 689
 690        hdev->bus = HCI_USB;
 691        hci_set_drvdata(hdev, data);
 692        SET_HCIDEV_DEV(hdev, &intf->dev);
 693
 694        hdev->open  = bfusb_open;
 695        hdev->close = bfusb_close;
 696        hdev->flush = bfusb_flush;
 697        hdev->send  = bfusb_send_frame;
 698
 699        if (hci_register_dev(hdev) < 0) {
 700                BT_ERR("Can't register HCI device");
 701                hci_free_dev(hdev);
 702                goto done;
 703        }
 704
 705        usb_set_intfdata(intf, data);
 706
 707        return 0;
 708
 709release:
 710        release_firmware(firmware);
 711
 712done:
 713        return -EIO;
 714}
 715
 716static void bfusb_disconnect(struct usb_interface *intf)
 717{
 718        struct bfusb_data *data = usb_get_intfdata(intf);
 719        struct hci_dev *hdev = data->hdev;
 720
 721        BT_DBG("intf %p", intf);
 722
 723        if (!hdev)
 724                return;
 725
 726        usb_set_intfdata(intf, NULL);
 727
 728        bfusb_close(hdev);
 729
 730        hci_unregister_dev(hdev);
 731        hci_free_dev(hdev);
 732}
 733
 734static struct usb_driver bfusb_driver = {
 735        .name           = "bfusb",
 736        .probe          = bfusb_probe,
 737        .disconnect     = bfusb_disconnect,
 738        .id_table       = bfusb_table,
 739        .disable_hub_initiated_lpm = 1,
 740};
 741
 742module_usb_driver(bfusb_driver);
 743
 744MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
 745MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION);
 746MODULE_VERSION(VERSION);
 747MODULE_LICENSE("GPL");
 748MODULE_FIRMWARE("bfubase.frm");
 749
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