[Bluetooth] Removal of unnecessary ignore module parameter
[linux-2.6.git] / 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 #ifndef CONFIG_BT_HCIBFUSB_DEBUG
42 #undef  BT_DBG
43 #define BT_DBG(D...)
44 #endif
45
46 #define VERSION "1.2"
47
48 static struct usb_driver bfusb_driver;
49
50 static struct usb_device_id bfusb_table[] = {
51         /* AVM BlueFRITZ! USB */
52         { USB_DEVICE(0x057c, 0x2200) },
53
54         { }     /* Terminating entry */
55 };
56
57 MODULE_DEVICE_TABLE(usb, bfusb_table);
58
59 #define BFUSB_MAX_BLOCK_SIZE    256
60
61 #define BFUSB_BLOCK_TIMEOUT     3000
62
63 #define BFUSB_TX_PROCESS        1
64 #define BFUSB_TX_WAKEUP         2
65
66 #define BFUSB_MAX_BULK_TX       2
67 #define BFUSB_MAX_BULK_RX       2
68
69 struct bfusb_data {
70         struct hci_dev          *hdev;
71
72         unsigned long           state;
73
74         struct usb_device       *udev;
75
76         unsigned int            bulk_in_ep;
77         unsigned int            bulk_out_ep;
78         unsigned int            bulk_pkt_size;
79
80         rwlock_t                lock;
81
82         struct sk_buff_head     transmit_q;
83
84         struct sk_buff          *reassembly;
85
86         atomic_t                pending_tx;
87         struct sk_buff_head     pending_q;
88         struct sk_buff_head     completed_q;
89 };
90
91 struct bfusb_data_scb {
92         struct urb *urb;
93 };
94
95 static void bfusb_tx_complete(struct urb *urb);
96 static void bfusb_rx_complete(struct urb *urb);
97
98 static struct urb *bfusb_get_completed(struct bfusb_data *data)
99 {
100         struct sk_buff *skb;
101         struct urb *urb = NULL;
102
103         BT_DBG("bfusb %p", data);
104
105         skb = skb_dequeue(&data->completed_q);
106         if (skb) {
107                 urb = ((struct bfusb_data_scb *) skb->cb)->urb;
108                 kfree_skb(skb);
109         }
110
111         return urb;
112 }
113
114 static void bfusb_unlink_urbs(struct bfusb_data *data)
115 {
116         struct sk_buff *skb;
117         struct urb *urb;
118
119         BT_DBG("bfusb %p", data);
120
121         while ((skb = skb_dequeue(&data->pending_q))) {
122                 urb = ((struct bfusb_data_scb *) skb->cb)->urb;
123                 usb_kill_urb(urb);
124                 skb_queue_tail(&data->completed_q, skb);
125         }
126
127         while ((urb = bfusb_get_completed(data)))
128                 usb_free_urb(urb);
129 }
130
131 static int bfusb_send_bulk(struct bfusb_data *data, struct sk_buff *skb)
132 {
133         struct bfusb_data_scb *scb = (void *) skb->cb;
134         struct urb *urb = bfusb_get_completed(data);
135         int err, pipe;
136
137         BT_DBG("bfusb %p skb %p len %d", data, skb, skb->len);
138
139         if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC)))
140                 return -ENOMEM;
141
142         pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep);
143
144         usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, skb->len,
145                         bfusb_tx_complete, skb);
146
147         scb->urb = urb;
148
149         skb_queue_tail(&data->pending_q, skb);
150
151         err = usb_submit_urb(urb, GFP_ATOMIC);
152         if (err) {
153                 BT_ERR("%s bulk tx submit failed urb %p err %d", 
154                                         data->hdev->name, urb, err);
155                 skb_unlink(skb, &data->pending_q);
156                 usb_free_urb(urb);
157         } else
158                 atomic_inc(&data->pending_tx);
159
160         return err;
161 }
162
163 static void bfusb_tx_wakeup(struct bfusb_data *data)
164 {
165         struct sk_buff *skb;
166
167         BT_DBG("bfusb %p", data);
168
169         if (test_and_set_bit(BFUSB_TX_PROCESS, &data->state)) {
170                 set_bit(BFUSB_TX_WAKEUP, &data->state);
171                 return;
172         }
173
174         do {
175                 clear_bit(BFUSB_TX_WAKEUP, &data->state);
176
177                 while ((atomic_read(&data->pending_tx) < BFUSB_MAX_BULK_TX) &&
178                                 (skb = skb_dequeue(&data->transmit_q))) {
179                         if (bfusb_send_bulk(data, skb) < 0) {
180                                 skb_queue_head(&data->transmit_q, skb);
181                                 break;
182                         }
183                 }
184
185         } while (test_bit(BFUSB_TX_WAKEUP, &data->state));
186
187         clear_bit(BFUSB_TX_PROCESS, &data->state);
188 }
189
190 static void bfusb_tx_complete(struct urb *urb)
191 {
192         struct sk_buff *skb = (struct sk_buff *) urb->context;
193         struct bfusb_data *data = (struct bfusb_data *) skb->dev;
194
195         BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len);
196
197         atomic_dec(&data->pending_tx);
198
199         if (!test_bit(HCI_RUNNING, &data->hdev->flags))
200                 return;
201
202         if (!urb->status)
203                 data->hdev->stat.byte_tx += skb->len;
204         else
205                 data->hdev->stat.err_tx++;
206
207         read_lock(&data->lock);
208
209         skb_unlink(skb, &data->pending_q);
210         skb_queue_tail(&data->completed_q, skb);
211
212         bfusb_tx_wakeup(data);
213
214         read_unlock(&data->lock);
215 }
216
217
218 static int bfusb_rx_submit(struct bfusb_data *data, struct urb *urb)
219 {
220         struct bfusb_data_scb *scb;
221         struct sk_buff *skb;
222         int err, pipe, size = HCI_MAX_FRAME_SIZE + 32;
223
224         BT_DBG("bfusb %p urb %p", bfusb, urb);
225
226         if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC)))
227                 return -ENOMEM;
228
229         skb = bt_skb_alloc(size, GFP_ATOMIC);
230         if (!skb) {
231                 usb_free_urb(urb);
232                 return -ENOMEM;
233         }
234
235         skb->dev = (void *) data;
236
237         scb = (struct bfusb_data_scb *) skb->cb;
238         scb->urb = urb;
239
240         pipe = usb_rcvbulkpipe(data->udev, data->bulk_in_ep);
241
242         usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, size,
243                         bfusb_rx_complete, skb);
244
245         skb_queue_tail(&data->pending_q, skb);
246
247         err = usb_submit_urb(urb, GFP_ATOMIC);
248         if (err) {
249                 BT_ERR("%s bulk rx submit failed urb %p err %d",
250                                         data->hdev->name, urb, err);
251                 skb_unlink(skb, &data->pending_q);
252                 kfree_skb(skb);
253                 usb_free_urb(urb);
254         }
255
256         return err;
257 }
258
259 static inline int bfusb_recv_block(struct bfusb_data *data, int hdr, unsigned char *buf, int len)
260 {
261         BT_DBG("bfusb %p hdr 0x%02x data %p len %d", data, hdr, buf, len);
262
263         if (hdr & 0x10) {
264                 BT_ERR("%s error in block", data->hdev->name);
265                 if (data->reassembly)
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                 skb->dev = (void *) data->hdev;
328                 bt_cb(skb)->pkt_type = pkt_type;
329
330                 data->reassembly = skb;
331         } else {
332                 if (!data->reassembly) {
333                         BT_ERR("%s unexpected continuation block", data->hdev->name);
334                         return -EIO;
335                 }
336         }
337
338         if (len > 0)
339                 memcpy(skb_put(data->reassembly, len), buf, len);
340
341         if (hdr & 0x08) {
342                 hci_recv_frame(data->reassembly);
343                 data->reassembly = NULL;
344         }
345
346         return 0;
347 }
348
349 static void bfusb_rx_complete(struct urb *urb)
350 {
351         struct sk_buff *skb = (struct sk_buff *) urb->context;
352         struct bfusb_data *data = (struct bfusb_data *) skb->dev;
353         unsigned char *buf = urb->transfer_buffer;
354         int count = urb->actual_length;
355         int err, hdr, len;
356
357         BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len);
358
359         read_lock(&data->lock);
360
361         if (!test_bit(HCI_RUNNING, &data->hdev->flags))
362                 goto unlock;
363
364         if (urb->status || !count)
365                 goto resubmit;
366
367         data->hdev->stat.byte_rx += count;
368
369         skb_put(skb, count);
370
371         while (count) {
372                 hdr = buf[0] | (buf[1] << 8);
373
374                 if (hdr & 0x4000) {
375                         len = 0;
376                         count -= 2;
377                         buf   += 2;
378                 } else {
379                         len = (buf[2] == 0) ? 256 : buf[2];
380                         count -= 3;
381                         buf   += 3;
382                 }
383
384                 if (count < len) {
385                         BT_ERR("%s block extends over URB buffer ranges",
386                                         data->hdev->name);
387                 }
388
389                 if ((hdr & 0xe1) == 0xc1)
390                         bfusb_recv_block(data, hdr, buf, len);
391
392                 count -= len;
393                 buf   += len;
394         }
395
396         skb_unlink(skb, &data->pending_q);
397         kfree_skb(skb);
398
399         bfusb_rx_submit(data, urb);
400
401         read_unlock(&data->lock);
402
403         return;
404
405 resubmit:
406         urb->dev = data->udev;
407
408         err = usb_submit_urb(urb, GFP_ATOMIC);
409         if (err) {
410                 BT_ERR("%s bulk resubmit failed urb %p err %d",
411                                         data->hdev->name, urb, err);
412         }
413
414 unlock:
415         read_unlock(&data->lock);
416 }
417
418 static int bfusb_open(struct hci_dev *hdev)
419 {
420         struct bfusb_data *data = hdev->driver_data;
421         unsigned long flags;
422         int i, err;
423
424         BT_DBG("hdev %p bfusb %p", hdev, data);
425
426         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
427                 return 0;
428
429         write_lock_irqsave(&data->lock, flags);
430
431         err = bfusb_rx_submit(data, NULL);
432         if (!err) {
433                 for (i = 1; i < BFUSB_MAX_BULK_RX; i++)
434                         bfusb_rx_submit(data, NULL);
435         } else {
436                 clear_bit(HCI_RUNNING, &hdev->flags);
437         }
438
439         write_unlock_irqrestore(&data->lock, flags);
440
441         return err;
442 }
443
444 static int bfusb_flush(struct hci_dev *hdev)
445 {
446         struct bfusb_data *data = hdev->driver_data;
447
448         BT_DBG("hdev %p bfusb %p", hdev, data);
449
450         skb_queue_purge(&data->transmit_q);
451
452         return 0;
453 }
454
455 static int bfusb_close(struct hci_dev *hdev)
456 {
457         struct bfusb_data *data = hdev->driver_data;
458         unsigned long flags;
459
460         BT_DBG("hdev %p bfusb %p", hdev, data);
461
462         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
463                 return 0;
464
465         write_lock_irqsave(&data->lock, flags);
466         write_unlock_irqrestore(&data->lock, flags);
467
468         bfusb_unlink_urbs(data);
469         bfusb_flush(hdev);
470
471         return 0;
472 }
473
474 static int bfusb_send_frame(struct sk_buff *skb)
475 {
476         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
477         struct bfusb_data *data;
478         struct sk_buff *nskb;
479         unsigned char buf[3];
480         int sent = 0, size, count;
481
482         BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, bt_cb(skb)->pkt_type, skb->len);
483
484         if (!hdev) {
485                 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
486                 return -ENODEV;
487         }
488
489         if (!test_bit(HCI_RUNNING, &hdev->flags))
490                 return -EBUSY;
491
492         data = hdev->driver_data;
493
494         switch (bt_cb(skb)->pkt_type) {
495         case HCI_COMMAND_PKT:
496                 hdev->stat.cmd_tx++;
497                 break;
498         case HCI_ACLDATA_PKT:
499                 hdev->stat.acl_tx++;
500                 break;
501         case HCI_SCODATA_PKT:
502                 hdev->stat.sco_tx++;
503                 break;
504         };
505
506         /* Prepend skb with frame type */
507         memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
508
509         count = skb->len;
510
511         /* Max HCI frame size seems to be 1511 + 1 */
512         nskb = bt_skb_alloc(count + 32, GFP_ATOMIC);
513         if (!nskb) {
514                 BT_ERR("Can't allocate memory for new packet");
515                 return -ENOMEM;
516         }
517
518         nskb->dev = (void *) data;
519
520         while (count) {
521                 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE);
522
523                 buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0);
524                 buf[1] = 0x00;
525                 buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size;
526
527                 memcpy(skb_put(nskb, 3), buf, 3);
528                 skb_copy_from_linear_data_offset(skb, sent, skb_put(nskb, size), size);
529
530                 sent  += size;
531                 count -= size;
532         }
533
534         /* Don't send frame with multiple size of bulk max packet */
535         if ((nskb->len % data->bulk_pkt_size) == 0) {
536                 buf[0] = 0xdd;
537                 buf[1] = 0x00;
538                 memcpy(skb_put(nskb, 2), buf, 2);
539         }
540
541         read_lock(&data->lock);
542
543         skb_queue_tail(&data->transmit_q, nskb);
544         bfusb_tx_wakeup(data);
545
546         read_unlock(&data->lock);
547
548         kfree_skb(skb);
549
550         return 0;
551 }
552
553 static void bfusb_destruct(struct hci_dev *hdev)
554 {
555         struct bfusb_data *data = hdev->driver_data;
556
557         BT_DBG("hdev %p bfusb %p", hdev, data);
558
559         kfree(data);
560 }
561
562 static int bfusb_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
563 {
564         return -ENOIOCTLCMD;
565 }
566
567 static int bfusb_load_firmware(struct bfusb_data *data,
568                                const unsigned char *firmware, int count)
569 {
570         unsigned char *buf;
571         int err, pipe, len, size, sent = 0;
572
573         BT_DBG("bfusb %p udev %p", data, data->udev);
574
575         BT_INFO("BlueFRITZ! USB loading firmware");
576
577         pipe = usb_sndctrlpipe(data->udev, 0);
578
579         if (usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
580                                 0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) {
581                 BT_ERR("Can't change to loading configuration");
582                 return -EBUSY;
583         }
584
585         data->udev->toggle[0] = data->udev->toggle[1] = 0;
586
587         buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_ATOMIC);
588         if (!buf) {
589                 BT_ERR("Can't allocate memory chunk for firmware");
590                 return -ENOMEM;
591         }
592
593         pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep);
594
595         while (count) {
596                 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3);
597
598                 memcpy(buf, firmware + sent, size);
599
600                 err = usb_bulk_msg(data->udev, pipe, buf, size,
601                                         &len, BFUSB_BLOCK_TIMEOUT);
602
603                 if (err || (len != size)) {
604                         BT_ERR("Error in firmware loading");
605                         goto error;
606                 }
607
608                 sent  += size;
609                 count -= size;
610         }
611
612         err = usb_bulk_msg(data->udev, pipe, NULL, 0,
613                                         &len, BFUSB_BLOCK_TIMEOUT);
614         if (err < 0) {
615                 BT_ERR("Error in null packet request");
616                 goto error;
617         }
618
619         pipe = usb_sndctrlpipe(data->udev, 0);
620
621         err = usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
622                                 0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
623         if (err < 0) {
624                 BT_ERR("Can't change to running configuration");
625                 goto error;
626         }
627
628         data->udev->toggle[0] = data->udev->toggle[1] = 0;
629
630         BT_INFO("BlueFRITZ! USB device ready");
631
632         kfree(buf);
633         return 0;
634
635 error:
636         kfree(buf);
637
638         pipe = usb_sndctrlpipe(data->udev, 0);
639
640         usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
641                                 0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
642
643         return err;
644 }
645
646 static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
647 {
648         const struct firmware *firmware;
649         struct usb_device *udev = interface_to_usbdev(intf);
650         struct usb_host_endpoint *bulk_out_ep;
651         struct usb_host_endpoint *bulk_in_ep;
652         struct hci_dev *hdev;
653         struct bfusb_data *data;
654
655         BT_DBG("intf %p id %p", intf, id);
656
657         /* Check number of endpoints */
658         if (intf->cur_altsetting->desc.bNumEndpoints < 2)
659                 return -EIO;
660
661         bulk_out_ep = &intf->cur_altsetting->endpoint[0];
662         bulk_in_ep  = &intf->cur_altsetting->endpoint[1];
663
664         if (!bulk_out_ep || !bulk_in_ep) {
665                 BT_ERR("Bulk endpoints not found");
666                 goto done;
667         }
668
669         /* Initialize control structure and load firmware */
670         data = kzalloc(sizeof(struct bfusb_data), GFP_KERNEL);
671         if (!data) {
672                 BT_ERR("Can't allocate memory for control structure");
673                 goto done;
674         }
675
676         data->udev = udev;
677         data->bulk_in_ep    = bulk_in_ep->desc.bEndpointAddress;
678         data->bulk_out_ep   = bulk_out_ep->desc.bEndpointAddress;
679         data->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize);
680
681         rwlock_init(&data->lock);
682
683         data->reassembly = NULL;
684
685         skb_queue_head_init(&data->transmit_q);
686         skb_queue_head_init(&data->pending_q);
687         skb_queue_head_init(&data->completed_q);
688
689         if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) {
690                 BT_ERR("Firmware request failed");
691                 goto error;
692         }
693
694         BT_DBG("firmware data %p size %d", firmware->data, firmware->size);
695
696         if (bfusb_load_firmware(data, firmware->data, firmware->size) < 0) {
697                 BT_ERR("Firmware loading failed");
698                 goto release;
699         }
700
701         release_firmware(firmware);
702
703         /* Initialize and register HCI device */
704         hdev = hci_alloc_dev();
705         if (!hdev) {
706                 BT_ERR("Can't allocate HCI device");
707                 goto error;
708         }
709
710         data->hdev = hdev;
711
712         hdev->type = HCI_USB;
713         hdev->driver_data = data;
714         SET_HCIDEV_DEV(hdev, &intf->dev);
715
716         hdev->open     = bfusb_open;
717         hdev->close    = bfusb_close;
718         hdev->flush    = bfusb_flush;
719         hdev->send     = bfusb_send_frame;
720         hdev->destruct = bfusb_destruct;
721         hdev->ioctl    = bfusb_ioctl;
722
723         hdev->owner = THIS_MODULE;
724
725         if (hci_register_dev(hdev) < 0) {
726                 BT_ERR("Can't register HCI device");
727                 hci_free_dev(hdev);
728                 goto error;
729         }
730
731         usb_set_intfdata(intf, data);
732
733         return 0;
734
735 release:
736         release_firmware(firmware);
737
738 error:
739         kfree(data);
740
741 done:
742         return -EIO;
743 }
744
745 static void bfusb_disconnect(struct usb_interface *intf)
746 {
747         struct bfusb_data *data = usb_get_intfdata(intf);
748         struct hci_dev *hdev = data->hdev;
749
750         BT_DBG("intf %p", intf);
751
752         if (!hdev)
753                 return;
754
755         usb_set_intfdata(intf, NULL);
756
757         bfusb_close(hdev);
758
759         if (hci_unregister_dev(hdev) < 0)
760                 BT_ERR("Can't unregister HCI device %s", hdev->name);
761
762         hci_free_dev(hdev);
763 }
764
765 static struct usb_driver bfusb_driver = {
766         .name           = "bfusb",
767         .probe          = bfusb_probe,
768         .disconnect     = bfusb_disconnect,
769         .id_table       = bfusb_table,
770 };
771
772 static int __init bfusb_init(void)
773 {
774         int err;
775
776         BT_INFO("BlueFRITZ! USB driver ver %s", VERSION);
777
778         err = usb_register(&bfusb_driver);
779         if (err < 0)
780                 BT_ERR("Failed to register BlueFRITZ! USB driver");
781
782         return err;
783 }
784
785 static void __exit bfusb_exit(void)
786 {
787         usb_deregister(&bfusb_driver);
788 }
789
790 module_init(bfusb_init);
791 module_exit(bfusb_exit);
792
793 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
794 MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION);
795 MODULE_VERSION(VERSION);
796 MODULE_LICENSE("GPL");
797 MODULE_FIRMWARE("bfubase.frm");