drivers/bluetooth/bfusb.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *
   4  *  AVM BlueFRITZ! USB driver
   5  *
   6  *  Copyright (C) 2003-2006  Marcel Holtmann <marcel@holtmann.org>
   7  */
   8
   9 #include <linux/module.h>
  10
  11 #include <linux/kernel.h>
  12 #include <linux/init.h>
  13 #include <linux/slab.h>
  14 #include <linux/types.h>
  15 #include <linux/errno.h>
  16 #include <linux/skbuff.h>
  17
  18 #include <linux/device.h>
  19 #include <linux/firmware.h>
  20
  21 #include <linux/usb.h>
  22
  23 #include <net/bluetooth/bluetooth.h>
  24 #include <net/bluetooth/hci_core.h>
  25
  26 #define VERSION "1.2"
  27
  28 static struct usb_driver bfusb_driver;
  29
  30 static const struct usb_device_id bfusb_table[] = {
  31         /* AVM BlueFRITZ! USB */
  32         { USB_DEVICE(0x057c, 0x2200) },
  33
  34         { }     /* Terminating entry */
  35 };
  36
  37 MODULE_DEVICE_TABLE(usb, bfusb_table);
  38
  39 #define BFUSB_MAX_BLOCK_SIZE    256
  40
  41 #define BFUSB_BLOCK_TIMEOUT     3000
  42
  43 #define BFUSB_TX_PROCESS        1
  44 #define BFUSB_TX_WAKEUP         2
  45
  46 #define BFUSB_MAX_BULK_TX       2
  47 #define BFUSB_MAX_BULK_RX       2
  48
  49 struct bfusb_data {
  50         struct hci_dev          *hdev;
  51
  52         unsigned long           state;
  53
  54         struct usb_device       *udev;
  55
  56         unsigned int            bulk_in_ep;
  57         unsigned int            bulk_out_ep;
  58         unsigned int            bulk_pkt_size;
  59
  60         rwlock_t                lock;
  61
  62         struct sk_buff_head     transmit_q;
  63
  64         struct sk_buff          *reassembly;
  65
  66         atomic_t                pending_tx;
  67         struct sk_buff_head     pending_q;
  68         struct sk_buff_head     completed_q;
  69 };
  70
  71 struct bfusb_data_scb {
  72         struct urb *urb;
  73 };
  74
  75 static void bfusb_tx_complete(struct urb *urb);
  76 static void bfusb_rx_complete(struct urb *urb);
  77
  78 static struct urb *bfusb_get_completed(struct bfusb_data *data)
  79 {
  80         struct sk_buff *skb;
  81         struct urb *urb = NULL;
  82
  83         BT_DBG("bfusb %p", data);
  84
  85         skb = skb_dequeue(&data->completed_q);
  86         if (skb) {
  87                 urb = ((struct bfusb_data_scb *) skb->cb)->urb;
  88                 kfree_skb(skb);
  89         }
  90
  91         return urb;
  92 }
  93
  94 static void bfusb_unlink_urbs(struct bfusb_data *data)
  95 {
  96         struct sk_buff *skb;
  97         struct urb *urb;
  98
  99         BT_DBG("bfusb %p", data);
 100
 101         while ((skb = skb_dequeue(&data->pending_q))) {
 102                 urb = ((struct bfusb_data_scb *) skb->cb)->urb;
 103                 usb_kill_urb(urb);
 104                 skb_queue_tail(&data->completed_q, skb);
 105         }
 106
 107         while ((urb = bfusb_get_completed(data)))
 108                 usb_free_urb(urb);
 109 }
 110
 111 static int bfusb_send_bulk(struct bfusb_data *data, struct sk_buff *skb)
 112 {
 113         struct bfusb_data_scb *scb = (void *) skb->cb;
 114         struct urb *urb = bfusb_get_completed(data);
 115         int err, pipe;
 116
 117         BT_DBG("bfusb %p skb %p len %d", data, skb, skb->len);
 118
 119         if (!urb) {
 120                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 121                 if (!urb)
 122                         return -ENOMEM;
 123         }
 124
 125         pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep);
 126
 127         usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, skb->len,
 128                         bfusb_tx_complete, skb);
 129
 130         scb->urb = urb;
 131
 132         skb_queue_tail(&data->pending_q, skb);
 133
 134         err = usb_submit_urb(urb, GFP_ATOMIC);
 135         if (err) {
 136                 BT_ERR("%s bulk tx submit failed urb %p err %d",
 137                                         data->hdev->name, urb, err);
 138                 skb_unlink(skb, &data->pending_q);
 139                 usb_free_urb(urb);
 140         } else
 141                 atomic_inc(&data->pending_tx);
 142
 143         return err;
 144 }
 145
 146 static void bfusb_tx_wakeup(struct bfusb_data *data)
 147 {
 148         struct sk_buff *skb;
 149
 150         BT_DBG("bfusb %p", data);
 151
 152         if (test_and_set_bit(BFUSB_TX_PROCESS, &data->state)) {
 153                 set_bit(BFUSB_TX_WAKEUP, &data->state);
 154                 return;
 155         }
 156
 157         do {
 158                 clear_bit(BFUSB_TX_WAKEUP, &data->state);
 159
 160                 while ((atomic_read(&data->pending_tx) < BFUSB_MAX_BULK_TX) &&
 161                                 (skb = skb_dequeue(&data->transmit_q))) {
 162                         if (bfusb_send_bulk(data, skb) < 0) {
 163                                 skb_queue_head(&data->transmit_q, skb);
 164                                 break;
 165                         }
 166                 }
 167
 168         } while (test_bit(BFUSB_TX_WAKEUP, &data->state));
 169
 170         clear_bit(BFUSB_TX_PROCESS, &data->state);
 171 }
 172
 173 static void bfusb_tx_complete(struct urb *urb)
 174 {
 175         struct sk_buff *skb = (struct sk_buff *) urb->context;
 176         struct bfusb_data *data = (struct bfusb_data *) skb->dev;
 177
 178         BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len);
 179
 180         atomic_dec(&data->pending_tx);
 181
 182         if (!test_bit(HCI_RUNNING, &data->hdev->flags))
 183                 return;
 184
 185         if (!urb->status)
 186                 data->hdev->stat.byte_tx += skb->len;
 187         else
 188                 data->hdev->stat.err_tx++;
 189
 190         read_lock(&data->lock);
 191
 192         skb_unlink(skb, &data->pending_q);
 193         skb_queue_tail(&data->completed_q, skb);
 194
 195         bfusb_tx_wakeup(data);
 196
 197         read_unlock(&data->lock);
 198 }
 199
 200
 201 static int bfusb_rx_submit(struct bfusb_data *data, struct urb *urb)
 202 {
 203         struct bfusb_data_scb *scb;
 204         struct sk_buff *skb;
 205         int err, pipe, size = HCI_MAX_FRAME_SIZE + 32;
 206
 207         BT_DBG("bfusb %p urb %p", data, urb);
 208
 209         if (!urb) {
 210                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 211                 if (!urb)
 212                         return -ENOMEM;
 213         }
 214
 215         skb = bt_skb_alloc(size, GFP_ATOMIC);
 216         if (!skb) {
 217                 usb_free_urb(urb);
 218                 return -ENOMEM;
 219         }
 220
 221         skb->dev = (void *) data;
 222
 223         scb = (struct bfusb_data_scb *) skb->cb;
 224         scb->urb = urb;
 225
 226         pipe = usb_rcvbulkpipe(data->udev, data->bulk_in_ep);
 227
 228         usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, size,
 229                         bfusb_rx_complete, skb);
 230
 231         skb_queue_tail(&data->pending_q, skb);
 232
 233         err = usb_submit_urb(urb, GFP_ATOMIC);
 234         if (err) {
 235                 BT_ERR("%s bulk rx submit failed urb %p err %d",
 236                                         data->hdev->name, urb, err);
 237                 skb_unlink(skb, &data->pending_q);
 238                 kfree_skb(skb);
 239                 usb_free_urb(urb);
 240         }
 241
 242         return err;
 243 }
 244
 245 static inline int bfusb_recv_block(struct bfusb_data *data, int hdr, unsigned char *buf, int len)
 246 {
 247         BT_DBG("bfusb %p hdr 0x%02x data %p len %d", data, hdr, buf, len);
 248
 249         if (hdr & 0x10) {
 250                 BT_ERR("%s error in block", data->hdev->name);
 251                 kfree_skb(data->reassembly);
 252                 data->reassembly = NULL;
 253                 return -EIO;
 254         }
 255
 256         if (hdr & 0x04) {
 257                 struct sk_buff *skb;
 258                 unsigned char pkt_type;
 259                 int pkt_len = 0;
 260
 261                 if (data->reassembly) {
 262                         BT_ERR("%s unexpected start block", data->hdev->name);
 263                         kfree_skb(data->reassembly);
 264                         data->reassembly = NULL;
 265                 }
 266
 267                 if (len < 1) {
 268                         BT_ERR("%s no packet type found", data->hdev->name);
 269                         return -EPROTO;
 270                 }
 271
 272                 pkt_type = *buf++; len--;
 273
 274                 switch (pkt_type) {
 275                 case HCI_EVENT_PKT:
 276                         if (len >= HCI_EVENT_HDR_SIZE) {
 277                                 struct hci_event_hdr *hdr = (struct hci_event_hdr *) buf;
 278                                 pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen;
 279                         } else {
 280                                 BT_ERR("%s event block is too short", data->hdev->name);
 281                                 return -EILSEQ;
 282                         }
 283                         break;
 284
 285                 case HCI_ACLDATA_PKT:
 286                         if (len >= HCI_ACL_HDR_SIZE) {
 287                                 struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) buf;
 288                                 pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen);
 289                         } else {
 290                                 BT_ERR("%s data block is too short", data->hdev->name);
 291                                 return -EILSEQ;
 292                         }
 293                         break;
 294
 295                 case HCI_SCODATA_PKT:
 296                         if (len >= HCI_SCO_HDR_SIZE) {
 297                                 struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) buf;
 298                                 pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen;
 299                         } else {
 300                                 BT_ERR("%s audio block is too short", data->hdev->name);
 301                                 return -EILSEQ;
 302                         }
 303                         break;
 304                 }
 305
 306                 skb = bt_skb_alloc(pkt_len, GFP_ATOMIC);
 307                 if (!skb) {
 308                         BT_ERR("%s no memory for the packet", data->hdev->name);
 309                         return -ENOMEM;
 310                 }
 311
 312                 hci_skb_pkt_type(skb) = pkt_type;
 313
 314                 data->reassembly = skb;
 315         } else {
 316                 if (!data->reassembly) {
 317                         BT_ERR("%s unexpected continuation block", data->hdev->name);
 318                         return -EIO;
 319                 }
 320         }
 321
 322         if (len > 0)
 323                 skb_put_data(data->reassembly, buf, len);
 324
 325         if (hdr & 0x08) {
 326                 hci_recv_frame(data->hdev, data->reassembly);
 327                 data->reassembly = NULL;
 328         }
 329
 330         return 0;
 331 }
 332
 333 static void bfusb_rx_complete(struct urb *urb)
 334 {
 335         struct sk_buff *skb = (struct sk_buff *) urb->context;
 336         struct bfusb_data *data = (struct bfusb_data *) skb->dev;
 337         unsigned char *buf = urb->transfer_buffer;
 338         int count = urb->actual_length;
 339         int err, hdr, len;
 340
 341         BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len);
 342
 343         read_lock(&data->lock);
 344
 345         if (!test_bit(HCI_RUNNING, &data->hdev->flags))
 346                 goto unlock;
 347
 348         if (urb->status || !count)
 349                 goto resubmit;
 350
 351         data->hdev->stat.byte_rx += count;
 352
 353         skb_put(skb, count);
 354
 355         while (count) {
 356                 hdr = buf[0] | (buf[1] << 8);
 357
 358                 if (hdr & 0x4000) {
 359                         len = 0;
 360                         count -= 2;
 361                         buf   += 2;
 362                 } else {
 363                         len = (buf[2] == 0) ? 256 : buf[2];
 364                         count -= 3;
 365                         buf   += 3;
 366                 }
 367
 368                 if (count < len) {
 369                         BT_ERR("%s block extends over URB buffer ranges",
 370                                         data->hdev->name);
 371                 }
 372
 373                 if ((hdr & 0xe1) == 0xc1)
 374                         bfusb_recv_block(data, hdr, buf, len);
 375
 376                 count -= len;
 377                 buf   += len;
 378         }
 379
 380         skb_unlink(skb, &data->pending_q);
 381         kfree_skb(skb);
 382
 383         bfusb_rx_submit(data, urb);
 384
 385         read_unlock(&data->lock);
 386
 387         return;
 388
 389 resubmit:
 390         urb->dev = data->udev;
 391
 392         err = usb_submit_urb(urb, GFP_ATOMIC);
 393         if (err) {
 394                 BT_ERR("%s bulk resubmit failed urb %p err %d",
 395                                         data->hdev->name, urb, err);
 396         }
 397
 398 unlock:
 399         read_unlock(&data->lock);
 400 }
 401
 402 static int bfusb_open(struct hci_dev *hdev)
 403 {
 404         struct bfusb_data *data = hci_get_drvdata(hdev);
 405         unsigned long flags;
 406         int i, err;
 407
 408         BT_DBG("hdev %p bfusb %p", hdev, data);
 409
 410         write_lock_irqsave(&data->lock, flags);
 411
 412         err = bfusb_rx_submit(data, NULL);
 413         if (!err) {
 414                 for (i = 1; i < BFUSB_MAX_BULK_RX; i++)
 415                         bfusb_rx_submit(data, NULL);
 416         }
 417
 418         write_unlock_irqrestore(&data->lock, flags);
 419
 420         return err;
 421 }
 422
 423 static int bfusb_flush(struct hci_dev *hdev)
 424 {
 425         struct bfusb_data *data = hci_get_drvdata(hdev);
 426
 427         BT_DBG("hdev %p bfusb %p", hdev, data);
 428
 429         skb_queue_purge(&data->transmit_q);
 430
 431         return 0;
 432 }
 433
 434 static int bfusb_close(struct hci_dev *hdev)
 435 {
 436         struct bfusb_data *data = hci_get_drvdata(hdev);
 437         unsigned long flags;
 438
 439         BT_DBG("hdev %p bfusb %p", hdev, data);
 440
 441         write_lock_irqsave(&data->lock, flags);
 442         write_unlock_irqrestore(&data->lock, flags);
 443
 444         bfusb_unlink_urbs(data);
 445         bfusb_flush(hdev);
 446
 447         return 0;
 448 }
 449
 450 static int bfusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 451 {
 452         struct bfusb_data *data = hci_get_drvdata(hdev);
 453         struct sk_buff *nskb;
 454         unsigned char buf[3];
 455         int sent = 0, size, count;
 456
 457         BT_DBG("hdev %p skb %p type %d len %d", hdev, skb,
 458                hci_skb_pkt_type(skb), skb->len);
 459
 460         switch (hci_skb_pkt_type(skb)) {
 461         case HCI_COMMAND_PKT:
 462                 hdev->stat.cmd_tx++;
 463                 break;
 464         case HCI_ACLDATA_PKT:
 465                 hdev->stat.acl_tx++;
 466                 break;
 467         case HCI_SCODATA_PKT:
 468                 hdev->stat.sco_tx++;
 469                 break;
 470         }
 471
 472         /* Prepend skb with frame type */
 473         memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
 474
 475         count = skb->len;
 476
 477         /* Max HCI frame size seems to be 1511 + 1 */
 478         nskb = bt_skb_alloc(count + 32, GFP_KERNEL);
 479         if (!nskb) {
 480                 BT_ERR("Can't allocate memory for new packet");
 481                 return -ENOMEM;
 482         }
 483
 484         nskb->dev = (void *) data;
 485
 486         while (count) {
 487                 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE);
 488
 489                 buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0);
 490                 buf[1] = 0x00;
 491                 buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size;
 492
 493                 skb_put_data(nskb, buf, 3);
 494                 skb_copy_from_linear_data_offset(skb, sent, skb_put(nskb, size), size);
 495
 496                 sent  += size;
 497                 count -= size;
 498         }
 499
 500         /* Don't send frame with multiple size of bulk max packet */
 501         if ((nskb->len % data->bulk_pkt_size) == 0) {
 502                 buf[0] = 0xdd;
 503                 buf[1] = 0x00;
 504                 skb_put_data(nskb, buf, 2);
 505         }
 506
 507         read_lock(&data->lock);
 508
 509         skb_queue_tail(&data->transmit_q, nskb);
 510         bfusb_tx_wakeup(data);
 511
 512         read_unlock(&data->lock);
 513
 514         kfree_skb(skb);
 515
 516         return 0;
 517 }
 518
 519 static int bfusb_load_firmware(struct bfusb_data *data,
 520                                const unsigned char *firmware, int count)
 521 {
 522         unsigned char *buf;
 523         int err, pipe, len, size, sent = 0;
 524
 525         BT_DBG("bfusb %p udev %p", data, data->udev);
 526
 527         BT_INFO("BlueFRITZ! USB loading firmware");
 528
 529         buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_KERNEL);
 530         if (!buf) {
 531                 BT_ERR("Can't allocate memory chunk for firmware");
 532                 return -ENOMEM;
 533         }
 534
 535         pipe = usb_sndctrlpipe(data->udev, 0);
 536
 537         if (usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
 538                                 0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) {
 539                 BT_ERR("Can't change to loading configuration");
 540                 kfree(buf);
 541                 return -EBUSY;
 542         }
 543
 544         data->udev->toggle[0] = data->udev->toggle[1] = 0;
 545
 546         pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep);
 547
 548         while (count) {
 549                 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3);
 550
 551                 memcpy(buf, firmware + sent, size);
 552
 553                 err = usb_bulk_msg(data->udev, pipe, buf, size,
 554                                         &len, BFUSB_BLOCK_TIMEOUT);
 555
 556                 if (err || (len != size)) {
 557                         BT_ERR("Error in firmware loading");
 558                         goto error;
 559                 }
 560
 561                 sent  += size;
 562                 count -= size;
 563         }
 564
 565         err = usb_bulk_msg(data->udev, pipe, NULL, 0,
 566                                         &len, BFUSB_BLOCK_TIMEOUT);
 567         if (err < 0) {
 568                 BT_ERR("Error in null packet request");
 569                 goto error;
 570         }
 571
 572         pipe = usb_sndctrlpipe(data->udev, 0);
 573
 574         err = usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
 575                                 0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
 576         if (err < 0) {
 577                 BT_ERR("Can't change to running configuration");
 578                 goto error;
 579         }
 580
 581         data->udev->toggle[0] = data->udev->toggle[1] = 0;
 582
 583         BT_INFO("BlueFRITZ! USB device ready");
 584
 585         kfree(buf);
 586         return 0;
 587
 588 error:
 589         kfree(buf);
 590
 591         pipe = usb_sndctrlpipe(data->udev, 0);
 592
 593         usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
 594                                 0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
 595
 596         return err;
 597 }
 598
 599 static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
 600 {
 601         const struct firmware *firmware;
 602         struct usb_device *udev = interface_to_usbdev(intf);
 603         struct usb_host_endpoint *bulk_out_ep;
 604         struct usb_host_endpoint *bulk_in_ep;
 605         struct hci_dev *hdev;
 606         struct bfusb_data *data;
 607
 608         BT_DBG("intf %p id %p", intf, id);
 609
 610         /* Check number of endpoints */
 611         if (intf->cur_altsetting->desc.bNumEndpoints < 2)
 612                 return -EIO;
 613
 614         bulk_out_ep = &intf->cur_altsetting->endpoint[0];
 615         bulk_in_ep  = &intf->cur_altsetting->endpoint[1];
 616
 617         if (!bulk_out_ep || !bulk_in_ep) {
 618                 BT_ERR("Bulk endpoints not found");
 619                 goto done;
 620         }
 621
 622         /* Initialize control structure and load firmware */
 623         data = devm_kzalloc(&intf->dev, sizeof(struct bfusb_data), GFP_KERNEL);
 624         if (!data)
 625                 return -ENOMEM;
 626
 627         data->udev = udev;
 628         data->bulk_in_ep    = bulk_in_ep->desc.bEndpointAddress;
 629         data->bulk_out_ep   = bulk_out_ep->desc.bEndpointAddress;
 630         data->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize);
 631
 632         rwlock_init(&data->lock);
 633
 634         data->reassembly = NULL;
 635
 636         skb_queue_head_init(&data->transmit_q);
 637         skb_queue_head_init(&data->pending_q);
 638         skb_queue_head_init(&data->completed_q);
 639
 640         if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) {
 641                 BT_ERR("Firmware request failed");
 642                 goto done;
 643         }
 644
 645         BT_DBG("firmware data %p size %zu", firmware->data, firmware->size);
 646
 647         if (bfusb_load_firmware(data, firmware->data, firmware->size) < 0) {
 648                 BT_ERR("Firmware loading failed");
 649                 goto release;
 650         }
 651
 652         release_firmware(firmware);
 653
 654         /* Initialize and register HCI device */
 655         hdev = hci_alloc_dev();
 656         if (!hdev) {
 657                 BT_ERR("Can't allocate HCI device");
 658                 goto done;
 659         }
 660
 661         data->hdev = hdev;
 662
 663         hdev->bus = HCI_USB;
 664         hci_set_drvdata(hdev, data);
 665         SET_HCIDEV_DEV(hdev, &intf->dev);
 666
 667         hdev->open  = bfusb_open;
 668         hdev->close = bfusb_close;
 669         hdev->flush = bfusb_flush;
 670         hdev->send  = bfusb_send_frame;
 671
 672         set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
 673
 674         if (hci_register_dev(hdev) < 0) {
 675                 BT_ERR("Can't register HCI device");
 676                 hci_free_dev(hdev);
 677                 goto done;
 678         }
 679
 680         usb_set_intfdata(intf, data);
 681
 682         return 0;
 683
 684 release:
 685         release_firmware(firmware);
 686
 687 done:
 688         return -EIO;
 689 }
 690
 691 static void bfusb_disconnect(struct usb_interface *intf)
 692 {
 693         struct bfusb_data *data = usb_get_intfdata(intf);
 694         struct hci_dev *hdev = data->hdev;
 695
 696         BT_DBG("intf %p", intf);
 697
 698         if (!hdev)
 699                 return;
 700
 701         usb_set_intfdata(intf, NULL);
 702
 703         bfusb_close(hdev);
 704
 705         hci_unregister_dev(hdev);
 706         hci_free_dev(hdev);
 707 }
 708
 709 static struct usb_driver bfusb_driver = {
 710         .name           = "bfusb",
 711         .probe          = bfusb_probe,
 712         .disconnect     = bfusb_disconnect,
 713         .id_table       = bfusb_table,
 714         .disable_hub_initiated_lpm = 1,
 715 };
 716
 717 module_usb_driver(bfusb_driver);
 718
 719 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
 720 MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION);
 721 MODULE_VERSION(VERSION);
 722 MODULE_LICENSE("GPL");
 723 MODULE_FIRMWARE("bfubase.frm");