Merge branch 'irq-fixes-for-linus-4' of git://git.kernel.org/pub/scm/linux/kernel...
[linux-2.6] / drivers / bluetooth / bfusb.c
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
43 static struct usb_driver bfusb_driver;
44
45 static struct usb_device_id bfusb_table[] = {
46         /* AVM BlueFRITZ! USB */
47         { USB_DEVICE(0x057c, 0x2200) },
48
49         { }     /* Terminating entry */
50 };
51
52 MODULE_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
64 struct 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
86 struct bfusb_data_scb {
87         struct urb *urb;
88 };
89
90 static void bfusb_tx_complete(struct urb *urb);
91 static void bfusb_rx_complete(struct urb *urb);
92
93 static 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
109 static 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
126 static 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 && !(urb = usb_alloc_urb(0, GFP_ATOMIC)))
135                 return -ENOMEM;
136
137         pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep);
138
139         usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, skb->len,
140                         bfusb_tx_complete, skb);
141
142         scb->urb = urb;
143
144         skb_queue_tail(&data->pending_q, skb);
145
146         err = usb_submit_urb(urb, GFP_ATOMIC);
147         if (err) {
148                 BT_ERR("%s bulk tx submit failed urb %p err %d", 
149                                         data->hdev->name, urb, err);
150                 skb_unlink(skb, &data->pending_q);
151                 usb_free_urb(urb);
152         } else
153                 atomic_inc(&data->pending_tx);
154
155         return err;
156 }
157
158 static void bfusb_tx_wakeup(struct bfusb_data *data)
159 {
160         struct sk_buff *skb;
161
162         BT_DBG("bfusb %p", data);
163
164         if (test_and_set_bit(BFUSB_TX_PROCESS, &data->state)) {
165                 set_bit(BFUSB_TX_WAKEUP, &data->state);
166                 return;
167         }
168
169         do {
170                 clear_bit(BFUSB_TX_WAKEUP, &data->state);
171
172                 while ((atomic_read(&data->pending_tx) < BFUSB_MAX_BULK_TX) &&
173                                 (skb = skb_dequeue(&data->transmit_q))) {
174                         if (bfusb_send_bulk(data, skb) < 0) {
175                                 skb_queue_head(&data->transmit_q, skb);
176                                 break;
177                         }
178                 }
179
180         } while (test_bit(BFUSB_TX_WAKEUP, &data->state));
181
182         clear_bit(BFUSB_TX_PROCESS, &data->state);
183 }
184
185 static void bfusb_tx_complete(struct urb *urb)
186 {
187         struct sk_buff *skb = (struct sk_buff *) urb->context;
188         struct bfusb_data *data = (struct bfusb_data *) skb->dev;
189
190         BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len);
191
192         atomic_dec(&data->pending_tx);
193
194         if (!test_bit(HCI_RUNNING, &data->hdev->flags))
195                 return;
196
197         if (!urb->status)
198                 data->hdev->stat.byte_tx += skb->len;
199         else
200                 data->hdev->stat.err_tx++;
201
202         read_lock(&data->lock);
203
204         skb_unlink(skb, &data->pending_q);
205         skb_queue_tail(&data->completed_q, skb);
206
207         bfusb_tx_wakeup(data);
208
209         read_unlock(&data->lock);
210 }
211
212
213 static int bfusb_rx_submit(struct bfusb_data *data, struct urb *urb)
214 {
215         struct bfusb_data_scb *scb;
216         struct sk_buff *skb;
217         int err, pipe, size = HCI_MAX_FRAME_SIZE + 32;
218
219         BT_DBG("bfusb %p urb %p", data, urb);
220
221         if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC)))
222                 return -ENOMEM;
223
224         skb = bt_skb_alloc(size, GFP_ATOMIC);
225         if (!skb) {
226                 usb_free_urb(urb);
227                 return -ENOMEM;
228         }
229
230         skb->dev = (void *) data;
231
232         scb = (struct bfusb_data_scb *) skb->cb;
233         scb->urb = urb;
234
235         pipe = usb_rcvbulkpipe(data->udev, data->bulk_in_ep);
236
237         usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, size,
238                         bfusb_rx_complete, skb);
239
240         skb_queue_tail(&data->pending_q, skb);
241
242         err = usb_submit_urb(urb, GFP_ATOMIC);
243         if (err) {
244                 BT_ERR("%s bulk rx submit failed urb %p err %d",
245                                         data->hdev->name, urb, err);
246                 skb_unlink(skb, &data->pending_q);
247                 kfree_skb(skb);
248                 usb_free_urb(urb);
249         }
250
251         return err;
252 }
253
254 static inline int bfusb_recv_block(struct bfusb_data *data, int hdr, unsigned char *buf, int len)
255 {
256         BT_DBG("bfusb %p hdr 0x%02x data %p len %d", data, hdr, buf, len);
257
258         if (hdr & 0x10) {
259                 BT_ERR("%s error in block", data->hdev->name);
260                 if (data->reassembly)
261                         kfree_skb(data->reassembly);
262                 data->reassembly = NULL;
263                 return -EIO;
264         }
265
266         if (hdr & 0x04) {
267                 struct sk_buff *skb;
268                 unsigned char pkt_type;
269                 int pkt_len = 0;
270
271                 if (data->reassembly) {
272                         BT_ERR("%s unexpected start block", data->hdev->name);
273                         kfree_skb(data->reassembly);
274                         data->reassembly = NULL;
275                 }
276
277                 if (len < 1) {
278                         BT_ERR("%s no packet type found", data->hdev->name);
279                         return -EPROTO;
280                 }
281
282                 pkt_type = *buf++; len--;
283
284                 switch (pkt_type) {
285                 case HCI_EVENT_PKT:
286                         if (len >= HCI_EVENT_HDR_SIZE) {
287                                 struct hci_event_hdr *hdr = (struct hci_event_hdr *) buf;
288                                 pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen;
289                         } else {
290                                 BT_ERR("%s event block is too short", data->hdev->name);
291                                 return -EILSEQ;
292                         }
293                         break;
294
295                 case HCI_ACLDATA_PKT:
296                         if (len >= HCI_ACL_HDR_SIZE) {
297                                 struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) buf;
298                                 pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen);
299                         } else {
300                                 BT_ERR("%s data block is too short", data->hdev->name);
301                                 return -EILSEQ;
302                         }
303                         break;
304
305                 case HCI_SCODATA_PKT:
306                         if (len >= HCI_SCO_HDR_SIZE) {
307                                 struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) buf;
308                                 pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen;
309                         } else {
310                                 BT_ERR("%s audio block is too short", data->hdev->name);
311                                 return -EILSEQ;
312                         }
313                         break;
314                 }
315
316                 skb = bt_skb_alloc(pkt_len, GFP_ATOMIC);
317                 if (!skb) {
318                         BT_ERR("%s no memory for the packet", data->hdev->name);
319                         return -ENOMEM;
320                 }
321
322                 skb->dev = (void *) data->hdev;
323                 bt_cb(skb)->pkt_type = pkt_type;
324
325                 data->reassembly = skb;
326         } else {
327                 if (!data->reassembly) {
328                         BT_ERR("%s unexpected continuation block", data->hdev->name);
329                         return -EIO;
330                 }
331         }
332
333         if (len > 0)
334                 memcpy(skb_put(data->reassembly, len), buf, len);
335
336         if (hdr & 0x08) {
337                 hci_recv_frame(data->reassembly);
338                 data->reassembly = NULL;
339         }
340
341         return 0;
342 }
343
344 static void bfusb_rx_complete(struct urb *urb)
345 {
346         struct sk_buff *skb = (struct sk_buff *) urb->context;
347         struct bfusb_data *data = (struct bfusb_data *) skb->dev;
348         unsigned char *buf = urb->transfer_buffer;
349         int count = urb->actual_length;
350         int err, hdr, len;
351
352         BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len);
353
354         read_lock(&data->lock);
355
356         if (!test_bit(HCI_RUNNING, &data->hdev->flags))
357                 goto unlock;
358
359         if (urb->status || !count)
360                 goto resubmit;
361
362         data->hdev->stat.byte_rx += count;
363
364         skb_put(skb, count);
365
366         while (count) {
367                 hdr = buf[0] | (buf[1] << 8);
368
369                 if (hdr & 0x4000) {
370                         len = 0;
371                         count -= 2;
372                         buf   += 2;
373                 } else {
374                         len = (buf[2] == 0) ? 256 : buf[2];
375                         count -= 3;
376                         buf   += 3;
377                 }
378
379                 if (count < len) {
380                         BT_ERR("%s block extends over URB buffer ranges",
381                                         data->hdev->name);
382                 }
383
384                 if ((hdr & 0xe1) == 0xc1)
385                         bfusb_recv_block(data, hdr, buf, len);
386
387                 count -= len;
388                 buf   += len;
389         }
390
391         skb_unlink(skb, &data->pending_q);
392         kfree_skb(skb);
393
394         bfusb_rx_submit(data, urb);
395
396         read_unlock(&data->lock);
397
398         return;
399
400 resubmit:
401         urb->dev = data->udev;
402
403         err = usb_submit_urb(urb, GFP_ATOMIC);
404         if (err) {
405                 BT_ERR("%s bulk resubmit failed urb %p err %d",
406                                         data->hdev->name, urb, err);
407         }
408
409 unlock:
410         read_unlock(&data->lock);
411 }
412
413 static int bfusb_open(struct hci_dev *hdev)
414 {
415         struct bfusb_data *data = hdev->driver_data;
416         unsigned long flags;
417         int i, err;
418
419         BT_DBG("hdev %p bfusb %p", hdev, data);
420
421         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
422                 return 0;
423
424         write_lock_irqsave(&data->lock, flags);
425
426         err = bfusb_rx_submit(data, NULL);
427         if (!err) {
428                 for (i = 1; i < BFUSB_MAX_BULK_RX; i++)
429                         bfusb_rx_submit(data, NULL);
430         } else {
431                 clear_bit(HCI_RUNNING, &hdev->flags);
432         }
433
434         write_unlock_irqrestore(&data->lock, flags);
435
436         return err;
437 }
438
439 static int bfusb_flush(struct hci_dev *hdev)
440 {
441         struct bfusb_data *data = hdev->driver_data;
442
443         BT_DBG("hdev %p bfusb %p", hdev, data);
444
445         skb_queue_purge(&data->transmit_q);
446
447         return 0;
448 }
449
450 static int bfusb_close(struct hci_dev *hdev)
451 {
452         struct bfusb_data *data = hdev->driver_data;
453         unsigned long flags;
454
455         BT_DBG("hdev %p bfusb %p", hdev, data);
456
457         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
458                 return 0;
459
460         write_lock_irqsave(&data->lock, flags);
461         write_unlock_irqrestore(&data->lock, flags);
462
463         bfusb_unlink_urbs(data);
464         bfusb_flush(hdev);
465
466         return 0;
467 }
468
469 static int bfusb_send_frame(struct sk_buff *skb)
470 {
471         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
472         struct bfusb_data *data;
473         struct sk_buff *nskb;
474         unsigned char buf[3];
475         int sent = 0, size, count;
476
477         BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, bt_cb(skb)->pkt_type, skb->len);
478
479         if (!hdev) {
480                 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
481                 return -ENODEV;
482         }
483
484         if (!test_bit(HCI_RUNNING, &hdev->flags))
485                 return -EBUSY;
486
487         data = hdev->driver_data;
488
489         switch (bt_cb(skb)->pkt_type) {
490         case HCI_COMMAND_PKT:
491                 hdev->stat.cmd_tx++;
492                 break;
493         case HCI_ACLDATA_PKT:
494                 hdev->stat.acl_tx++;
495                 break;
496         case HCI_SCODATA_PKT:
497                 hdev->stat.sco_tx++;
498                 break;
499         };
500
501         /* Prepend skb with frame type */
502         memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
503
504         count = skb->len;
505
506         /* Max HCI frame size seems to be 1511 + 1 */
507         nskb = bt_skb_alloc(count + 32, GFP_ATOMIC);
508         if (!nskb) {
509                 BT_ERR("Can't allocate memory for new packet");
510                 return -ENOMEM;
511         }
512
513         nskb->dev = (void *) data;
514
515         while (count) {
516                 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE);
517
518                 buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0);
519                 buf[1] = 0x00;
520                 buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size;
521
522                 memcpy(skb_put(nskb, 3), buf, 3);
523                 skb_copy_from_linear_data_offset(skb, sent, skb_put(nskb, size), size);
524
525                 sent  += size;
526                 count -= size;
527         }
528
529         /* Don't send frame with multiple size of bulk max packet */
530         if ((nskb->len % data->bulk_pkt_size) == 0) {
531                 buf[0] = 0xdd;
532                 buf[1] = 0x00;
533                 memcpy(skb_put(nskb, 2), buf, 2);
534         }
535
536         read_lock(&data->lock);
537
538         skb_queue_tail(&data->transmit_q, nskb);
539         bfusb_tx_wakeup(data);
540
541         read_unlock(&data->lock);
542
543         kfree_skb(skb);
544
545         return 0;
546 }
547
548 static void bfusb_destruct(struct hci_dev *hdev)
549 {
550         struct bfusb_data *data = hdev->driver_data;
551
552         BT_DBG("hdev %p bfusb %p", hdev, data);
553
554         kfree(data);
555 }
556
557 static int bfusb_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
558 {
559         return -ENOIOCTLCMD;
560 }
561
562 static int bfusb_load_firmware(struct bfusb_data *data,
563                                const unsigned char *firmware, int count)
564 {
565         unsigned char *buf;
566         int err, pipe, len, size, sent = 0;
567
568         BT_DBG("bfusb %p udev %p", data, data->udev);
569
570         BT_INFO("BlueFRITZ! USB loading firmware");
571
572         pipe = usb_sndctrlpipe(data->udev, 0);
573
574         if (usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
575                                 0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) {
576                 BT_ERR("Can't change to loading configuration");
577                 return -EBUSY;
578         }
579
580         data->udev->toggle[0] = data->udev->toggle[1] = 0;
581
582         buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_ATOMIC);
583         if (!buf) {
584                 BT_ERR("Can't allocate memory chunk for firmware");
585                 return -ENOMEM;
586         }
587
588         pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep);
589
590         while (count) {
591                 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3);
592
593                 memcpy(buf, firmware + sent, size);
594
595                 err = usb_bulk_msg(data->udev, pipe, buf, size,
596                                         &len, BFUSB_BLOCK_TIMEOUT);
597
598                 if (err || (len != size)) {
599                         BT_ERR("Error in firmware loading");
600                         goto error;
601                 }
602
603                 sent  += size;
604                 count -= size;
605         }
606
607         err = usb_bulk_msg(data->udev, pipe, NULL, 0,
608                                         &len, BFUSB_BLOCK_TIMEOUT);
609         if (err < 0) {
610                 BT_ERR("Error in null packet request");
611                 goto error;
612         }
613
614         pipe = usb_sndctrlpipe(data->udev, 0);
615
616         err = usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
617                                 0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
618         if (err < 0) {
619                 BT_ERR("Can't change to running configuration");
620                 goto error;
621         }
622
623         data->udev->toggle[0] = data->udev->toggle[1] = 0;
624
625         BT_INFO("BlueFRITZ! USB device ready");
626
627         kfree(buf);
628         return 0;
629
630 error:
631         kfree(buf);
632
633         pipe = usb_sndctrlpipe(data->udev, 0);
634
635         usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
636                                 0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
637
638         return err;
639 }
640
641 static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
642 {
643         const struct firmware *firmware;
644         struct usb_device *udev = interface_to_usbdev(intf);
645         struct usb_host_endpoint *bulk_out_ep;
646         struct usb_host_endpoint *bulk_in_ep;
647         struct hci_dev *hdev;
648         struct bfusb_data *data;
649
650         BT_DBG("intf %p id %p", intf, id);
651
652         /* Check number of endpoints */
653         if (intf->cur_altsetting->desc.bNumEndpoints < 2)
654                 return -EIO;
655
656         bulk_out_ep = &intf->cur_altsetting->endpoint[0];
657         bulk_in_ep  = &intf->cur_altsetting->endpoint[1];
658
659         if (!bulk_out_ep || !bulk_in_ep) {
660                 BT_ERR("Bulk endpoints not found");
661                 goto done;
662         }
663
664         /* Initialize control structure and load firmware */
665         data = kzalloc(sizeof(struct bfusb_data), GFP_KERNEL);
666         if (!data) {
667                 BT_ERR("Can't allocate memory for control structure");
668                 goto done;
669         }
670
671         data->udev = udev;
672         data->bulk_in_ep    = bulk_in_ep->desc.bEndpointAddress;
673         data->bulk_out_ep   = bulk_out_ep->desc.bEndpointAddress;
674         data->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize);
675
676         rwlock_init(&data->lock);
677
678         data->reassembly = NULL;
679
680         skb_queue_head_init(&data->transmit_q);
681         skb_queue_head_init(&data->pending_q);
682         skb_queue_head_init(&data->completed_q);
683
684         if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) {
685                 BT_ERR("Firmware request failed");
686                 goto error;
687         }
688
689         BT_DBG("firmware data %p size %zu", firmware->data, firmware->size);
690
691         if (bfusb_load_firmware(data, firmware->data, firmware->size) < 0) {
692                 BT_ERR("Firmware loading failed");
693                 goto release;
694         }
695
696         release_firmware(firmware);
697
698         /* Initialize and register HCI device */
699         hdev = hci_alloc_dev();
700         if (!hdev) {
701                 BT_ERR("Can't allocate HCI device");
702                 goto error;
703         }
704
705         data->hdev = hdev;
706
707         hdev->type = HCI_USB;
708         hdev->driver_data = data;
709         SET_HCIDEV_DEV(hdev, &intf->dev);
710
711         hdev->open     = bfusb_open;
712         hdev->close    = bfusb_close;
713         hdev->flush    = bfusb_flush;
714         hdev->send     = bfusb_send_frame;
715         hdev->destruct = bfusb_destruct;
716         hdev->ioctl    = bfusb_ioctl;
717
718         hdev->owner = THIS_MODULE;
719
720         if (hci_register_dev(hdev) < 0) {
721                 BT_ERR("Can't register HCI device");
722                 hci_free_dev(hdev);
723                 goto error;
724         }
725
726         usb_set_intfdata(intf, data);
727
728         return 0;
729
730 release:
731         release_firmware(firmware);
732
733 error:
734         kfree(data);
735
736 done:
737         return -EIO;
738 }
739
740 static void bfusb_disconnect(struct usb_interface *intf)
741 {
742         struct bfusb_data *data = usb_get_intfdata(intf);
743         struct hci_dev *hdev = data->hdev;
744
745         BT_DBG("intf %p", intf);
746
747         if (!hdev)
748                 return;
749
750         usb_set_intfdata(intf, NULL);
751
752         bfusb_close(hdev);
753
754         if (hci_unregister_dev(hdev) < 0)
755                 BT_ERR("Can't unregister HCI device %s", hdev->name);
756
757         hci_free_dev(hdev);
758 }
759
760 static struct usb_driver bfusb_driver = {
761         .name           = "bfusb",
762         .probe          = bfusb_probe,
763         .disconnect     = bfusb_disconnect,
764         .id_table       = bfusb_table,
765 };
766
767 static int __init bfusb_init(void)
768 {
769         int err;
770
771         BT_INFO("BlueFRITZ! USB driver ver %s", VERSION);
772
773         err = usb_register(&bfusb_driver);
774         if (err < 0)
775                 BT_ERR("Failed to register BlueFRITZ! USB driver");
776
777         return err;
778 }
779
780 static void __exit bfusb_exit(void)
781 {
782         usb_deregister(&bfusb_driver);
783 }
784
785 module_init(bfusb_init);
786 module_exit(bfusb_exit);
787
788 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
789 MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION);
790 MODULE_VERSION(VERSION);
791 MODULE_LICENSE("GPL");
792 MODULE_FIRMWARE("bfubase.frm");