8ed3c6c5484ae44a46f6538c117ab4ada4b90ab1
[pandora-kernel.git] / drivers / bluetooth / btusb.c
1 /*
2  *
3  *  Generic Bluetooth USB driver
4  *
5  *  Copyright (C) 2005-2008  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/kernel.h>
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/slab.h>
28 #include <linux/types.h>
29 #include <linux/sched.h>
30 #include <linux/errno.h>
31 #include <linux/skbuff.h>
32
33 #include <linux/usb.h>
34
35 #include <net/bluetooth/bluetooth.h>
36 #include <net/bluetooth/hci_core.h>
37
38 #define VERSION "0.6"
39
40 static int ignore_dga;
41 static int ignore_csr;
42 static int ignore_sniffer;
43 static int disable_scofix;
44 static int force_scofix;
45
46 static int reset = 1;
47
48 static struct usb_driver btusb_driver;
49
50 #define BTUSB_IGNORE            0x01
51 #define BTUSB_DIGIANSWER        0x02
52 #define BTUSB_CSR               0x04
53 #define BTUSB_SNIFFER           0x08
54 #define BTUSB_BCM92035          0x10
55 #define BTUSB_BROKEN_ISOC       0x20
56 #define BTUSB_WRONG_SCO_MTU     0x40
57 #define BTUSB_ATH3012           0x80
58 #define BTUSB_INTEL_BOOT        0x200
59
60 static struct usb_device_id btusb_table[] = {
61         /* Generic Bluetooth USB device */
62         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
63
64         /* Apple-specific (Broadcom) devices */
65         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
66
67         /* MediaTek MT76x0E */
68         { USB_DEVICE(0x0e8d, 0x763f) },
69
70         /* Broadcom SoftSailing reporting vendor specific */
71         { USB_DEVICE(0x0a5c, 0x21e1) },
72
73         /* Apple MacBookPro 7,1 */
74         { USB_DEVICE(0x05ac, 0x8213) },
75
76         /* Apple iMac11,1 */
77         { USB_DEVICE(0x05ac, 0x8215) },
78
79         /* Apple MacBookPro6,2 */
80         { USB_DEVICE(0x05ac, 0x8218) },
81
82         /* Apple MacBookAir3,1, MacBookAir3,2 */
83         { USB_DEVICE(0x05ac, 0x821b) },
84
85         /* Apple MacBookAir4,1 */
86         { USB_DEVICE(0x05ac, 0x821f) },
87
88         /* Apple MacBookPro8,2 */
89         { USB_DEVICE(0x05ac, 0x821a) },
90
91         /* Apple MacMini5,1 */
92         { USB_DEVICE(0x05ac, 0x8281) },
93
94         /* AVM BlueFRITZ! USB v2.0 */
95         { USB_DEVICE(0x057c, 0x3800) },
96
97         /* Bluetooth Ultraport Module from IBM */
98         { USB_DEVICE(0x04bf, 0x030a) },
99
100         /* ALPS Modules with non-standard id */
101         { USB_DEVICE(0x044e, 0x3001) },
102         { USB_DEVICE(0x044e, 0x3002) },
103
104         /* Ericsson with non-standard id */
105         { USB_DEVICE(0x0bdb, 0x1002) },
106
107         /* Canyon CN-BTU1 with HID interfaces */
108         { USB_DEVICE(0x0c10, 0x0000) },
109
110         /* Broadcom BCM20702A0 */
111         { USB_DEVICE(0x0489, 0xe042) },
112         { USB_DEVICE(0x04ca, 0x2003) },
113         { USB_DEVICE(0x0b05, 0x17b5) },
114         { USB_DEVICE(0x0b05, 0x17cb) },
115         { USB_DEVICE(0x413c, 0x8197) },
116
117         /* Foxconn - Hon Hai */
118         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
119
120         /* Broadcom devices with vendor specific id */
121         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
122
123         /* Belkin F8065bf - Broadcom based */
124         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
125
126         /* IMC Networks - Broadcom based */
127         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
128
129         /* Intel Bluetooth USB Bootloader (RAM module) */
130         { USB_DEVICE(0x8087, 0x0a5a), .driver_info = BTUSB_INTEL_BOOT },
131
132         { }     /* Terminating entry */
133 };
134
135 MODULE_DEVICE_TABLE(usb, btusb_table);
136
137 static struct usb_device_id blacklist_table[] = {
138         /* CSR BlueCore devices */
139         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
140
141         /* Broadcom BCM2033 without firmware */
142         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
143
144         /* Atheros 3011 with sflash firmware */
145         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
146         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
147         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
148         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
149         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
150         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
151
152         /* Atheros AR9285 Malbec with sflash firmware */
153         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
154
155         /* Atheros 3012 with sflash firmware */
156         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
157         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
158         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
159         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
160         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
161         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
162         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
163         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
164         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
165         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
166         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
167         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
168         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
169         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
170         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
171         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
172         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
173         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
174         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
175         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
176         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
177         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
178         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
179         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
180         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
181         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
182         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
183         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
184         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
185         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
186
187         /* Atheros AR5BBU12 with sflash firmware */
188         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
189
190         /* Atheros AR5BBU12 with sflash firmware */
191         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
192         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
193
194         /* Broadcom BCM2035 */
195         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
196         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
197         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
198
199         /* Broadcom BCM2045 */
200         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
201         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
202
203         /* IBM/Lenovo ThinkPad with Broadcom chip */
204         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
205         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
206
207         /* HP laptop with Broadcom chip */
208         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
209
210         /* Dell laptop with Broadcom chip */
211         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
212
213         /* Dell Wireless 370 and 410 devices */
214         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
215         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
216
217         /* Belkin F8T012 and F8T013 devices */
218         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
219         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
220
221         /* Asus WL-BTD202 device */
222         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
223
224         /* Kensington Bluetooth USB adapter */
225         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
226
227         /* RTX Telecom based adapters with buggy SCO support */
228         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
229         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
230
231         /* CONWISE Technology based adapters with buggy SCO support */
232         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
233
234         /* Digianswer devices */
235         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
236         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
237
238         /* CSR BlueCore Bluetooth Sniffer */
239         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
240
241         /* Frontline ComProbe Bluetooth Sniffer */
242         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
243
244         { }     /* Terminating entry */
245 };
246
247 #define BTUSB_MAX_ISOC_FRAMES   10
248
249 #define BTUSB_INTR_RUNNING      0
250 #define BTUSB_BULK_RUNNING      1
251 #define BTUSB_ISOC_RUNNING      2
252 #define BTUSB_SUSPENDING        3
253 #define BTUSB_DID_ISO_RESUME    4
254
255 struct btusb_data {
256         struct hci_dev       *hdev;
257         struct usb_device    *udev;
258         struct usb_interface *intf;
259         struct usb_interface *isoc;
260
261         spinlock_t lock;
262
263         unsigned long flags;
264
265         struct work_struct work;
266         struct work_struct waker;
267
268         struct usb_anchor tx_anchor;
269         struct usb_anchor intr_anchor;
270         struct usb_anchor bulk_anchor;
271         struct usb_anchor isoc_anchor;
272         struct usb_anchor deferred;
273         int tx_in_flight;
274         spinlock_t txlock;
275
276         struct usb_endpoint_descriptor *intr_ep;
277         struct usb_endpoint_descriptor *bulk_tx_ep;
278         struct usb_endpoint_descriptor *bulk_rx_ep;
279         struct usb_endpoint_descriptor *isoc_tx_ep;
280         struct usb_endpoint_descriptor *isoc_rx_ep;
281
282         __u8 cmdreq_type;
283
284         unsigned int sco_num;
285         int isoc_altsetting;
286         int suspend_count;
287 };
288
289 static int inc_tx(struct btusb_data *data)
290 {
291         unsigned long flags;
292         int rv;
293
294         spin_lock_irqsave(&data->txlock, flags);
295         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
296         if (!rv)
297                 data->tx_in_flight++;
298         spin_unlock_irqrestore(&data->txlock, flags);
299
300         return rv;
301 }
302
303 static void btusb_intr_complete(struct urb *urb)
304 {
305         struct hci_dev *hdev = urb->context;
306         struct btusb_data *data = hdev->driver_data;
307         int err;
308
309         BT_DBG("%s urb %p status %d count %d", hdev->name,
310                                         urb, urb->status, urb->actual_length);
311
312         if (!test_bit(HCI_RUNNING, &hdev->flags))
313                 return;
314
315         if (urb->status == 0) {
316                 hdev->stat.byte_rx += urb->actual_length;
317
318                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
319                                                 urb->transfer_buffer,
320                                                 urb->actual_length) < 0) {
321                         BT_ERR("%s corrupted event packet", hdev->name);
322                         hdev->stat.err_rx++;
323                 }
324         } else if (urb->status == -ENOENT) {
325                 /* Avoid suspend failed when usb_kill_urb */
326                 return;
327         }
328
329         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
330                 return;
331
332         usb_mark_last_busy(data->udev);
333         usb_anchor_urb(urb, &data->intr_anchor);
334
335         err = usb_submit_urb(urb, GFP_ATOMIC);
336         if (err < 0) {
337                 /* -EPERM: urb is being killed;
338                  * -ENODEV: device got disconnected */
339                 if (err != -EPERM && err != -ENODEV)
340                         BT_ERR("%s urb %p failed to resubmit (%d)",
341                                                 hdev->name, urb, -err);
342                 usb_unanchor_urb(urb);
343         }
344 }
345
346 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
347 {
348         struct btusb_data *data = hdev->driver_data;
349         struct urb *urb;
350         unsigned char *buf;
351         unsigned int pipe;
352         int err, size;
353
354         BT_DBG("%s", hdev->name);
355
356         if (!data->intr_ep)
357                 return -ENODEV;
358
359         urb = usb_alloc_urb(0, mem_flags);
360         if (!urb)
361                 return -ENOMEM;
362
363         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
364
365         buf = kmalloc(size, mem_flags);
366         if (!buf) {
367                 usb_free_urb(urb);
368                 return -ENOMEM;
369         }
370
371         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
372
373         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
374                                                 btusb_intr_complete, hdev,
375                                                 data->intr_ep->bInterval);
376
377         urb->transfer_flags |= URB_FREE_BUFFER;
378
379         usb_anchor_urb(urb, &data->intr_anchor);
380
381         err = usb_submit_urb(urb, mem_flags);
382         if (err < 0) {
383                 BT_ERR("%s urb %p submission failed (%d)",
384                                                 hdev->name, urb, -err);
385                 usb_unanchor_urb(urb);
386         }
387
388         usb_free_urb(urb);
389
390         return err;
391 }
392
393 static void btusb_bulk_complete(struct urb *urb)
394 {
395         struct hci_dev *hdev = urb->context;
396         struct btusb_data *data = hdev->driver_data;
397         int err;
398
399         BT_DBG("%s urb %p status %d count %d", hdev->name,
400                                         urb, urb->status, urb->actual_length);
401
402         if (!test_bit(HCI_RUNNING, &hdev->flags))
403                 return;
404
405         if (urb->status == 0) {
406                 hdev->stat.byte_rx += urb->actual_length;
407
408                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
409                                                 urb->transfer_buffer,
410                                                 urb->actual_length) < 0) {
411                         BT_ERR("%s corrupted ACL packet", hdev->name);
412                         hdev->stat.err_rx++;
413                 }
414         } else if (urb->status == -ENOENT) {
415                 /* Avoid suspend failed when usb_kill_urb */
416                 return;
417         }
418
419         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
420                 return;
421
422         usb_anchor_urb(urb, &data->bulk_anchor);
423         usb_mark_last_busy(data->udev);
424
425         err = usb_submit_urb(urb, GFP_ATOMIC);
426         if (err < 0) {
427                 /* -EPERM: urb is being killed;
428                  * -ENODEV: device got disconnected */
429                 if (err != -EPERM && err != -ENODEV)
430                         BT_ERR("%s urb %p failed to resubmit (%d)",
431                                                 hdev->name, urb, -err);
432                 usb_unanchor_urb(urb);
433         }
434 }
435
436 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
437 {
438         struct btusb_data *data = hdev->driver_data;
439         struct urb *urb;
440         unsigned char *buf;
441         unsigned int pipe;
442         int err, size = HCI_MAX_FRAME_SIZE;
443
444         BT_DBG("%s", hdev->name);
445
446         if (!data->bulk_rx_ep)
447                 return -ENODEV;
448
449         urb = usb_alloc_urb(0, mem_flags);
450         if (!urb)
451                 return -ENOMEM;
452
453         buf = kmalloc(size, mem_flags);
454         if (!buf) {
455                 usb_free_urb(urb);
456                 return -ENOMEM;
457         }
458
459         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
460
461         usb_fill_bulk_urb(urb, data->udev, pipe,
462                                         buf, size, btusb_bulk_complete, hdev);
463
464         urb->transfer_flags |= URB_FREE_BUFFER;
465
466         usb_mark_last_busy(data->udev);
467         usb_anchor_urb(urb, &data->bulk_anchor);
468
469         err = usb_submit_urb(urb, mem_flags);
470         if (err < 0) {
471                 BT_ERR("%s urb %p submission failed (%d)",
472                                                 hdev->name, urb, -err);
473                 usb_unanchor_urb(urb);
474         }
475
476         usb_free_urb(urb);
477
478         return err;
479 }
480
481 static void btusb_isoc_complete(struct urb *urb)
482 {
483         struct hci_dev *hdev = urb->context;
484         struct btusb_data *data = hdev->driver_data;
485         int i, err;
486
487         BT_DBG("%s urb %p status %d count %d", hdev->name,
488                                         urb, urb->status, urb->actual_length);
489
490         if (!test_bit(HCI_RUNNING, &hdev->flags))
491                 return;
492
493         if (urb->status == 0) {
494                 for (i = 0; i < urb->number_of_packets; i++) {
495                         unsigned int offset = urb->iso_frame_desc[i].offset;
496                         unsigned int length = urb->iso_frame_desc[i].actual_length;
497
498                         if (urb->iso_frame_desc[i].status)
499                                 continue;
500
501                         hdev->stat.byte_rx += length;
502
503                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
504                                                 urb->transfer_buffer + offset,
505                                                                 length) < 0) {
506                                 BT_ERR("%s corrupted SCO packet", hdev->name);
507                                 hdev->stat.err_rx++;
508                         }
509                 }
510         } else if (urb->status == -ENOENT) {
511                 /* Avoid suspend failed when usb_kill_urb */
512                 return;
513         }
514
515         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
516                 return;
517
518         usb_anchor_urb(urb, &data->isoc_anchor);
519
520         err = usb_submit_urb(urb, GFP_ATOMIC);
521         if (err < 0) {
522                 /* -EPERM: urb is being killed;
523                  * -ENODEV: device got disconnected */
524                 if (err != -EPERM && err != -ENODEV)
525                         BT_ERR("%s urb %p failed to resubmit (%d)",
526                                                 hdev->name, urb, -err);
527                 usb_unanchor_urb(urb);
528         }
529 }
530
531 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
532 {
533         int i, offset = 0;
534
535         BT_DBG("len %d mtu %d", len, mtu);
536
537         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
538                                         i++, offset += mtu, len -= mtu) {
539                 urb->iso_frame_desc[i].offset = offset;
540                 urb->iso_frame_desc[i].length = mtu;
541         }
542
543         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
544                 urb->iso_frame_desc[i].offset = offset;
545                 urb->iso_frame_desc[i].length = len;
546                 i++;
547         }
548
549         urb->number_of_packets = i;
550 }
551
552 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
553 {
554         struct btusb_data *data = hdev->driver_data;
555         struct urb *urb;
556         unsigned char *buf;
557         unsigned int pipe;
558         int err, size;
559
560         BT_DBG("%s", hdev->name);
561
562         if (!data->isoc_rx_ep)
563                 return -ENODEV;
564
565         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
566         if (!urb)
567                 return -ENOMEM;
568
569         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
570                                                 BTUSB_MAX_ISOC_FRAMES;
571
572         buf = kmalloc(size, mem_flags);
573         if (!buf) {
574                 usb_free_urb(urb);
575                 return -ENOMEM;
576         }
577
578         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
579
580         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
581                                 hdev, data->isoc_rx_ep->bInterval);
582
583         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
584
585         __fill_isoc_descriptor(urb, size,
586                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
587
588         usb_anchor_urb(urb, &data->isoc_anchor);
589
590         err = usb_submit_urb(urb, mem_flags);
591         if (err < 0) {
592                 BT_ERR("%s urb %p submission failed (%d)",
593                                                 hdev->name, urb, -err);
594                 usb_unanchor_urb(urb);
595         }
596
597         usb_free_urb(urb);
598
599         return err;
600 }
601
602 static void btusb_tx_complete(struct urb *urb)
603 {
604         struct sk_buff *skb = urb->context;
605         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
606         struct btusb_data *data = hdev->driver_data;
607
608         BT_DBG("%s urb %p status %d count %d", hdev->name,
609                                         urb, urb->status, urb->actual_length);
610
611         if (!test_bit(HCI_RUNNING, &hdev->flags))
612                 goto done;
613
614         if (!urb->status)
615                 hdev->stat.byte_tx += urb->transfer_buffer_length;
616         else
617                 hdev->stat.err_tx++;
618
619 done:
620         spin_lock(&data->txlock);
621         data->tx_in_flight--;
622         spin_unlock(&data->txlock);
623
624         kfree(urb->setup_packet);
625
626         kfree_skb(skb);
627 }
628
629 static void btusb_isoc_tx_complete(struct urb *urb)
630 {
631         struct sk_buff *skb = urb->context;
632         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
633
634         BT_DBG("%s urb %p status %d count %d", hdev->name,
635                                         urb, urb->status, urb->actual_length);
636
637         if (!test_bit(HCI_RUNNING, &hdev->flags))
638                 goto done;
639
640         if (!urb->status)
641                 hdev->stat.byte_tx += urb->transfer_buffer_length;
642         else
643                 hdev->stat.err_tx++;
644
645 done:
646         kfree(urb->setup_packet);
647
648         kfree_skb(skb);
649 }
650
651 static int btusb_open(struct hci_dev *hdev)
652 {
653         struct btusb_data *data = hdev->driver_data;
654         int err;
655
656         BT_DBG("%s", hdev->name);
657
658         err = usb_autopm_get_interface(data->intf);
659         if (err < 0)
660                 return err;
661
662         data->intf->needs_remote_wakeup = 1;
663
664         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
665                 goto done;
666
667         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
668                 goto done;
669
670         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
671         if (err < 0)
672                 goto failed;
673
674         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
675         if (err < 0) {
676                 usb_kill_anchored_urbs(&data->intr_anchor);
677                 goto failed;
678         }
679
680         set_bit(BTUSB_BULK_RUNNING, &data->flags);
681         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
682
683 done:
684         usb_autopm_put_interface(data->intf);
685         return 0;
686
687 failed:
688         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
689         clear_bit(HCI_RUNNING, &hdev->flags);
690         usb_autopm_put_interface(data->intf);
691         return err;
692 }
693
694 static void btusb_stop_traffic(struct btusb_data *data)
695 {
696         usb_kill_anchored_urbs(&data->intr_anchor);
697         usb_kill_anchored_urbs(&data->bulk_anchor);
698         usb_kill_anchored_urbs(&data->isoc_anchor);
699 }
700
701 static int btusb_close(struct hci_dev *hdev)
702 {
703         struct btusb_data *data = hdev->driver_data;
704         int err;
705
706         BT_DBG("%s", hdev->name);
707
708         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
709                 return 0;
710
711         cancel_work_sync(&data->work);
712         cancel_work_sync(&data->waker);
713
714         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
715         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
716         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
717
718         btusb_stop_traffic(data);
719         err = usb_autopm_get_interface(data->intf);
720         if (err < 0)
721                 goto failed;
722
723         data->intf->needs_remote_wakeup = 0;
724         usb_autopm_put_interface(data->intf);
725
726 failed:
727         usb_scuttle_anchored_urbs(&data->deferred);
728         return 0;
729 }
730
731 static int btusb_flush(struct hci_dev *hdev)
732 {
733         struct btusb_data *data = hdev->driver_data;
734
735         BT_DBG("%s", hdev->name);
736
737         usb_kill_anchored_urbs(&data->tx_anchor);
738
739         return 0;
740 }
741
742 static int btusb_send_frame(struct sk_buff *skb)
743 {
744         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
745         struct btusb_data *data = hdev->driver_data;
746         struct usb_ctrlrequest *dr;
747         struct urb *urb;
748         unsigned int pipe;
749         int err;
750
751         BT_DBG("%s", hdev->name);
752
753         if (!test_bit(HCI_RUNNING, &hdev->flags))
754                 return -EBUSY;
755
756         switch (bt_cb(skb)->pkt_type) {
757         case HCI_COMMAND_PKT:
758                 urb = usb_alloc_urb(0, GFP_ATOMIC);
759                 if (!urb)
760                         return -ENOMEM;
761
762                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
763                 if (!dr) {
764                         usb_free_urb(urb);
765                         return -ENOMEM;
766                 }
767
768                 dr->bRequestType = data->cmdreq_type;
769                 dr->bRequest     = 0;
770                 dr->wIndex       = 0;
771                 dr->wValue       = 0;
772                 dr->wLength      = __cpu_to_le16(skb->len);
773
774                 pipe = usb_sndctrlpipe(data->udev, 0x00);
775
776                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
777                                 skb->data, skb->len, btusb_tx_complete, skb);
778
779                 hdev->stat.cmd_tx++;
780                 break;
781
782         case HCI_ACLDATA_PKT:
783                 if (!data->bulk_tx_ep)
784                         return -ENODEV;
785
786                 urb = usb_alloc_urb(0, GFP_ATOMIC);
787                 if (!urb)
788                         return -ENOMEM;
789
790                 pipe = usb_sndbulkpipe(data->udev,
791                                         data->bulk_tx_ep->bEndpointAddress);
792
793                 usb_fill_bulk_urb(urb, data->udev, pipe,
794                                 skb->data, skb->len, btusb_tx_complete, skb);
795
796                 hdev->stat.acl_tx++;
797                 break;
798
799         case HCI_SCODATA_PKT:
800                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
801                         return -ENODEV;
802
803                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
804                 if (!urb)
805                         return -ENOMEM;
806
807                 pipe = usb_sndisocpipe(data->udev,
808                                         data->isoc_tx_ep->bEndpointAddress);
809
810                 usb_fill_int_urb(urb, data->udev, pipe,
811                                 skb->data, skb->len, btusb_isoc_tx_complete,
812                                 skb, data->isoc_tx_ep->bInterval);
813
814                 urb->transfer_flags  = URB_ISO_ASAP;
815
816                 __fill_isoc_descriptor(urb, skb->len,
817                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
818
819                 hdev->stat.sco_tx++;
820                 goto skip_waking;
821
822         default:
823                 return -EILSEQ;
824         }
825
826         err = inc_tx(data);
827         if (err) {
828                 usb_anchor_urb(urb, &data->deferred);
829                 schedule_work(&data->waker);
830                 err = 0;
831                 goto done;
832         }
833
834 skip_waking:
835         usb_anchor_urb(urb, &data->tx_anchor);
836
837         err = usb_submit_urb(urb, GFP_ATOMIC);
838         if (err < 0) {
839                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
840                 kfree(urb->setup_packet);
841                 usb_unanchor_urb(urb);
842         } else {
843                 usb_mark_last_busy(data->udev);
844         }
845
846 done:
847         usb_free_urb(urb);
848         return err;
849 }
850
851 static void btusb_destruct(struct hci_dev *hdev)
852 {
853         struct btusb_data *data = hdev->driver_data;
854
855         BT_DBG("%s", hdev->name);
856
857         kfree(data);
858 }
859
860 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
861 {
862         struct btusb_data *data = hdev->driver_data;
863
864         BT_DBG("%s evt %d", hdev->name, evt);
865
866         if (hdev->conn_hash.sco_num != data->sco_num) {
867                 data->sco_num = hdev->conn_hash.sco_num;
868                 schedule_work(&data->work);
869         }
870 }
871
872 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
873 {
874         struct btusb_data *data = hdev->driver_data;
875         struct usb_interface *intf = data->isoc;
876         struct usb_endpoint_descriptor *ep_desc;
877         int i, err;
878
879         if (!data->isoc)
880                 return -ENODEV;
881
882         err = usb_set_interface(data->udev, 1, altsetting);
883         if (err < 0) {
884                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
885                 return err;
886         }
887
888         data->isoc_altsetting = altsetting;
889
890         data->isoc_tx_ep = NULL;
891         data->isoc_rx_ep = NULL;
892
893         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
894                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
895
896                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
897                         data->isoc_tx_ep = ep_desc;
898                         continue;
899                 }
900
901                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
902                         data->isoc_rx_ep = ep_desc;
903                         continue;
904                 }
905         }
906
907         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
908                 BT_ERR("%s invalid SCO descriptors", hdev->name);
909                 return -ENODEV;
910         }
911
912         return 0;
913 }
914
915 static void btusb_work(struct work_struct *work)
916 {
917         struct btusb_data *data = container_of(work, struct btusb_data, work);
918         struct hci_dev *hdev = data->hdev;
919         int err;
920
921         if (hdev->conn_hash.sco_num > 0) {
922                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
923                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
924                         if (err < 0) {
925                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
926                                 usb_kill_anchored_urbs(&data->isoc_anchor);
927                                 return;
928                         }
929
930                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
931                 }
932                 if (data->isoc_altsetting != 2) {
933                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
934                         usb_kill_anchored_urbs(&data->isoc_anchor);
935
936                         if (__set_isoc_interface(hdev, 2) < 0)
937                                 return;
938                 }
939
940                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
941                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
942                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
943                         else
944                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
945                 }
946         } else {
947                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
948                 usb_kill_anchored_urbs(&data->isoc_anchor);
949
950                 __set_isoc_interface(hdev, 0);
951                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
952                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
953         }
954 }
955
956 static void btusb_waker(struct work_struct *work)
957 {
958         struct btusb_data *data = container_of(work, struct btusb_data, waker);
959         int err;
960
961         err = usb_autopm_get_interface(data->intf);
962         if (err < 0)
963                 return;
964
965         usb_autopm_put_interface(data->intf);
966 }
967
968 static int btusb_probe(struct usb_interface *intf,
969                                 const struct usb_device_id *id)
970 {
971         struct usb_endpoint_descriptor *ep_desc;
972         struct btusb_data *data;
973         struct hci_dev *hdev;
974         int i, err;
975
976         BT_DBG("intf %p id %p", intf, id);
977
978         /* interface numbers are hardcoded in the spec */
979         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
980                 return -ENODEV;
981
982         if (!id->driver_info) {
983                 const struct usb_device_id *match;
984                 match = usb_match_id(intf, blacklist_table);
985                 if (match)
986                         id = match;
987         }
988
989         if (id->driver_info == BTUSB_IGNORE)
990                 return -ENODEV;
991
992         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
993                 return -ENODEV;
994
995         if (ignore_csr && id->driver_info & BTUSB_CSR)
996                 return -ENODEV;
997
998         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
999                 return -ENODEV;
1000
1001         if (id->driver_info & BTUSB_ATH3012) {
1002                 struct usb_device *udev = interface_to_usbdev(intf);
1003
1004                 /* Old firmware would otherwise let ath3k driver load
1005                  * patch and sysconfig files */
1006                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1007                         return -ENODEV;
1008         }
1009
1010         data = kzalloc(sizeof(*data), GFP_KERNEL);
1011         if (!data)
1012                 return -ENOMEM;
1013
1014         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1015                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1016
1017                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1018                         data->intr_ep = ep_desc;
1019                         continue;
1020                 }
1021
1022                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1023                         data->bulk_tx_ep = ep_desc;
1024                         continue;
1025                 }
1026
1027                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1028                         data->bulk_rx_ep = ep_desc;
1029                         continue;
1030                 }
1031         }
1032
1033         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
1034                 kfree(data);
1035                 return -ENODEV;
1036         }
1037
1038         data->cmdreq_type = USB_TYPE_CLASS;
1039
1040         data->udev = interface_to_usbdev(intf);
1041         data->intf = intf;
1042
1043         spin_lock_init(&data->lock);
1044
1045         INIT_WORK(&data->work, btusb_work);
1046         INIT_WORK(&data->waker, btusb_waker);
1047         spin_lock_init(&data->txlock);
1048
1049         init_usb_anchor(&data->tx_anchor);
1050         init_usb_anchor(&data->intr_anchor);
1051         init_usb_anchor(&data->bulk_anchor);
1052         init_usb_anchor(&data->isoc_anchor);
1053         init_usb_anchor(&data->deferred);
1054
1055         hdev = hci_alloc_dev();
1056         if (!hdev) {
1057                 kfree(data);
1058                 return -ENOMEM;
1059         }
1060
1061         hdev->bus = HCI_USB;
1062         hdev->driver_data = data;
1063
1064         data->hdev = hdev;
1065
1066         SET_HCIDEV_DEV(hdev, &intf->dev);
1067
1068         hdev->open     = btusb_open;
1069         hdev->close    = btusb_close;
1070         hdev->flush    = btusb_flush;
1071         hdev->send     = btusb_send_frame;
1072         hdev->destruct = btusb_destruct;
1073         hdev->notify   = btusb_notify;
1074
1075         hdev->owner = THIS_MODULE;
1076
1077         if (id->driver_info & BTUSB_INTEL_BOOT)
1078                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1079
1080         /* Interface numbers are hardcoded in the specification */
1081         data->isoc = usb_ifnum_to_if(data->udev, 1);
1082
1083         if (!reset)
1084                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1085
1086         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1087                 if (!disable_scofix)
1088                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1089         }
1090
1091         if (id->driver_info & BTUSB_BROKEN_ISOC)
1092                 data->isoc = NULL;
1093
1094         if (id->driver_info & BTUSB_DIGIANSWER) {
1095                 data->cmdreq_type = USB_TYPE_VENDOR;
1096                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1097         }
1098
1099         if (id->driver_info & BTUSB_CSR) {
1100                 struct usb_device *udev = data->udev;
1101
1102                 /* Old firmware would otherwise execute USB reset */
1103                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1104                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1105         }
1106
1107         if (id->driver_info & BTUSB_SNIFFER) {
1108                 struct usb_device *udev = data->udev;
1109
1110                 /* New sniffer firmware has crippled HCI interface */
1111                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1112                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1113
1114                 data->isoc = NULL;
1115         }
1116
1117         if (id->driver_info & BTUSB_BCM92035) {
1118                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1119                 struct sk_buff *skb;
1120
1121                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1122                 if (skb) {
1123                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1124                         skb_queue_tail(&hdev->driver_init, skb);
1125                 }
1126         }
1127
1128         if (data->isoc) {
1129                 err = usb_driver_claim_interface(&btusb_driver,
1130                                                         data->isoc, data);
1131                 if (err < 0) {
1132                         hci_free_dev(hdev);
1133                         kfree(data);
1134                         return err;
1135                 }
1136         }
1137
1138         err = hci_register_dev(hdev);
1139         if (err < 0) {
1140                 hci_free_dev(hdev);
1141                 kfree(data);
1142                 return err;
1143         }
1144
1145         usb_set_intfdata(intf, data);
1146
1147         return 0;
1148 }
1149
1150 static void btusb_disconnect(struct usb_interface *intf)
1151 {
1152         struct btusb_data *data = usb_get_intfdata(intf);
1153         struct hci_dev *hdev;
1154
1155         BT_DBG("intf %p", intf);
1156
1157         if (!data)
1158                 return;
1159
1160         hdev = data->hdev;
1161
1162         __hci_dev_hold(hdev);
1163
1164         usb_set_intfdata(data->intf, NULL);
1165
1166         if (data->isoc)
1167                 usb_set_intfdata(data->isoc, NULL);
1168
1169         hci_unregister_dev(hdev);
1170
1171         if (intf == data->isoc)
1172                 usb_driver_release_interface(&btusb_driver, data->intf);
1173         else if (data->isoc)
1174                 usb_driver_release_interface(&btusb_driver, data->isoc);
1175
1176         __hci_dev_put(hdev);
1177
1178         hci_free_dev(hdev);
1179 }
1180
1181 #ifdef CONFIG_PM
1182 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1183 {
1184         struct btusb_data *data = usb_get_intfdata(intf);
1185
1186         BT_DBG("intf %p", intf);
1187
1188         if (data->suspend_count++)
1189                 return 0;
1190
1191         spin_lock_irq(&data->txlock);
1192         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1193                 set_bit(BTUSB_SUSPENDING, &data->flags);
1194                 spin_unlock_irq(&data->txlock);
1195         } else {
1196                 spin_unlock_irq(&data->txlock);
1197                 data->suspend_count--;
1198                 return -EBUSY;
1199         }
1200
1201         cancel_work_sync(&data->work);
1202
1203         btusb_stop_traffic(data);
1204         usb_kill_anchored_urbs(&data->tx_anchor);
1205
1206         return 0;
1207 }
1208
1209 static void play_deferred(struct btusb_data *data)
1210 {
1211         struct urb *urb;
1212         int err;
1213
1214         while ((urb = usb_get_from_anchor(&data->deferred))) {
1215                 err = usb_submit_urb(urb, GFP_ATOMIC);
1216                 if (err < 0)
1217                         break;
1218
1219                 data->tx_in_flight++;
1220         }
1221         usb_scuttle_anchored_urbs(&data->deferred);
1222 }
1223
1224 static int btusb_resume(struct usb_interface *intf)
1225 {
1226         struct btusb_data *data = usb_get_intfdata(intf);
1227         struct hci_dev *hdev = data->hdev;
1228         int err = 0;
1229
1230         BT_DBG("intf %p", intf);
1231
1232         if (--data->suspend_count)
1233                 return 0;
1234
1235         if (!test_bit(HCI_RUNNING, &hdev->flags))
1236                 goto done;
1237
1238         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1239                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1240                 if (err < 0) {
1241                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1242                         goto failed;
1243                 }
1244         }
1245
1246         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1247                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1248                 if (err < 0) {
1249                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1250                         goto failed;
1251                 }
1252
1253                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1254         }
1255
1256         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1257                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1258                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1259                 else
1260                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1261         }
1262
1263         spin_lock_irq(&data->txlock);
1264         play_deferred(data);
1265         clear_bit(BTUSB_SUSPENDING, &data->flags);
1266         spin_unlock_irq(&data->txlock);
1267         schedule_work(&data->work);
1268
1269         return 0;
1270
1271 failed:
1272         usb_scuttle_anchored_urbs(&data->deferred);
1273 done:
1274         spin_lock_irq(&data->txlock);
1275         clear_bit(BTUSB_SUSPENDING, &data->flags);
1276         spin_unlock_irq(&data->txlock);
1277
1278         return err;
1279 }
1280 #endif
1281
1282 static struct usb_driver btusb_driver = {
1283         .name           = "btusb",
1284         .probe          = btusb_probe,
1285         .disconnect     = btusb_disconnect,
1286 #ifdef CONFIG_PM
1287         .suspend        = btusb_suspend,
1288         .resume         = btusb_resume,
1289 #endif
1290         .id_table       = btusb_table,
1291         .supports_autosuspend = 1,
1292 };
1293
1294 static int __init btusb_init(void)
1295 {
1296         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1297
1298         return usb_register(&btusb_driver);
1299 }
1300
1301 static void __exit btusb_exit(void)
1302 {
1303         usb_deregister(&btusb_driver);
1304 }
1305
1306 module_init(btusb_init);
1307 module_exit(btusb_exit);
1308
1309 module_param(ignore_dga, bool, 0644);
1310 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1311
1312 module_param(ignore_csr, bool, 0644);
1313 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1314
1315 module_param(ignore_sniffer, bool, 0644);
1316 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1317
1318 module_param(disable_scofix, bool, 0644);
1319 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1320
1321 module_param(force_scofix, bool, 0644);
1322 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1323
1324 module_param(reset, bool, 0644);
1325 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1326
1327 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1328 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1329 MODULE_VERSION(VERSION);
1330 MODULE_LICENSE("GPL");