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Now it works.
[cbs-scheduler.git] / drivers / bluetooth / bfusb.c
blobd3f14bee0f1939fcb1ff0261e6018b0f99e1689e
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");
A cbs scheduler for rt-kernel