6fba5c66aa626edde6433dd459a861e6117530c8
[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         /* ASUSTek Computer - Broadcom based */
124         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01) },
125
126         /* Belkin F8065bf - Broadcom based */
127         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
128
129         /* IMC Networks - Broadcom based */
130         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
131
132         /* Intel Bluetooth USB Bootloader (RAM module) */
133         { USB_DEVICE(0x8087, 0x0a5a),
134           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
135
136         { }     /* Terminating entry */
137 };
138
139 MODULE_DEVICE_TABLE(usb, btusb_table);
140
141 static struct usb_device_id blacklist_table[] = {
142         /* CSR BlueCore devices */
143         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
144
145         /* Broadcom BCM2033 without firmware */
146         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
147
148         /* Atheros 3011 with sflash firmware */
149         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
150         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
151         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
152         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
153         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
154         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
155
156         /* Atheros AR9285 Malbec with sflash firmware */
157         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
158
159         /* Atheros 3012 with sflash firmware */
160         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
161         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
162         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
163         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
164         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
165         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
166         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
167         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
168         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
169         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
170         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
171         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
172         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
173         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
174         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
175         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
176         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
177         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
178         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
179         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
180         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
181         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
182         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
183         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
184         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
185         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
186         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
187         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
188         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
189         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
190         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
191         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
192         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
193         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
194
195         /* Atheros AR5BBU12 with sflash firmware */
196         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
197
198         /* Atheros AR5BBU12 with sflash firmware */
199         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
200         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
201
202         /* Broadcom BCM2035 */
203         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
204         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
205         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
206
207         /* Broadcom BCM2045 */
208         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
209         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
210
211         /* IBM/Lenovo ThinkPad with Broadcom chip */
212         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
213         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
214
215         /* HP laptop with Broadcom chip */
216         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
217
218         /* Dell laptop with Broadcom chip */
219         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
220
221         /* Dell Wireless 370 and 410 devices */
222         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
223         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
224
225         /* Belkin F8T012 and F8T013 devices */
226         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
227         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
228
229         /* Asus WL-BTD202 device */
230         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
231
232         /* Kensington Bluetooth USB adapter */
233         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
234
235         /* RTX Telecom based adapters with buggy SCO support */
236         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
237         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
238
239         /* CONWISE Technology based adapters with buggy SCO support */
240         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
241
242         /* Digianswer devices */
243         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
244         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
245
246         /* CSR BlueCore Bluetooth Sniffer */
247         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
248
249         /* Frontline ComProbe Bluetooth Sniffer */
250         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
251
252         { }     /* Terminating entry */
253 };
254
255 #define BTUSB_MAX_ISOC_FRAMES   10
256
257 #define BTUSB_INTR_RUNNING      0
258 #define BTUSB_BULK_RUNNING      1
259 #define BTUSB_ISOC_RUNNING      2
260 #define BTUSB_SUSPENDING        3
261 #define BTUSB_DID_ISO_RESUME    4
262
263 struct btusb_data {
264         struct hci_dev       *hdev;
265         struct usb_device    *udev;
266         struct usb_interface *intf;
267         struct usb_interface *isoc;
268
269         spinlock_t lock;
270
271         unsigned long flags;
272
273         struct work_struct work;
274         struct work_struct waker;
275
276         struct usb_anchor tx_anchor;
277         struct usb_anchor intr_anchor;
278         struct usb_anchor bulk_anchor;
279         struct usb_anchor isoc_anchor;
280         struct usb_anchor deferred;
281         int tx_in_flight;
282         spinlock_t txlock;
283
284         struct usb_endpoint_descriptor *intr_ep;
285         struct usb_endpoint_descriptor *bulk_tx_ep;
286         struct usb_endpoint_descriptor *bulk_rx_ep;
287         struct usb_endpoint_descriptor *isoc_tx_ep;
288         struct usb_endpoint_descriptor *isoc_rx_ep;
289
290         __u8 cmdreq_type;
291
292         unsigned int sco_num;
293         int isoc_altsetting;
294         int suspend_count;
295 };
296
297 static int inc_tx(struct btusb_data *data)
298 {
299         unsigned long flags;
300         int rv;
301
302         spin_lock_irqsave(&data->txlock, flags);
303         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
304         if (!rv)
305                 data->tx_in_flight++;
306         spin_unlock_irqrestore(&data->txlock, flags);
307
308         return rv;
309 }
310
311 static void btusb_intr_complete(struct urb *urb)
312 {
313         struct hci_dev *hdev = urb->context;
314         struct btusb_data *data = hdev->driver_data;
315         int err;
316
317         BT_DBG("%s urb %p status %d count %d", hdev->name,
318                                         urb, urb->status, urb->actual_length);
319
320         if (!test_bit(HCI_RUNNING, &hdev->flags))
321                 return;
322
323         if (urb->status == 0) {
324                 hdev->stat.byte_rx += urb->actual_length;
325
326                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
327                                                 urb->transfer_buffer,
328                                                 urb->actual_length) < 0) {
329                         BT_ERR("%s corrupted event packet", hdev->name);
330                         hdev->stat.err_rx++;
331                 }
332         } else if (urb->status == -ENOENT) {
333                 /* Avoid suspend failed when usb_kill_urb */
334                 return;
335         }
336
337         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
338                 return;
339
340         usb_mark_last_busy(data->udev);
341         usb_anchor_urb(urb, &data->intr_anchor);
342
343         err = usb_submit_urb(urb, GFP_ATOMIC);
344         if (err < 0) {
345                 /* -EPERM: urb is being killed;
346                  * -ENODEV: device got disconnected */
347                 if (err != -EPERM && err != -ENODEV)
348                         BT_ERR("%s urb %p failed to resubmit (%d)",
349                                                 hdev->name, urb, -err);
350                 usb_unanchor_urb(urb);
351         }
352 }
353
354 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
355 {
356         struct btusb_data *data = hdev->driver_data;
357         struct urb *urb;
358         unsigned char *buf;
359         unsigned int pipe;
360         int err, size;
361
362         BT_DBG("%s", hdev->name);
363
364         if (!data->intr_ep)
365                 return -ENODEV;
366
367         urb = usb_alloc_urb(0, mem_flags);
368         if (!urb)
369                 return -ENOMEM;
370
371         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
372
373         buf = kmalloc(size, mem_flags);
374         if (!buf) {
375                 usb_free_urb(urb);
376                 return -ENOMEM;
377         }
378
379         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
380
381         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
382                                                 btusb_intr_complete, hdev,
383                                                 data->intr_ep->bInterval);
384
385         urb->transfer_flags |= URB_FREE_BUFFER;
386
387         usb_anchor_urb(urb, &data->intr_anchor);
388
389         err = usb_submit_urb(urb, mem_flags);
390         if (err < 0) {
391                 BT_ERR("%s urb %p submission failed (%d)",
392                                                 hdev->name, urb, -err);
393                 usb_unanchor_urb(urb);
394         }
395
396         usb_free_urb(urb);
397
398         return err;
399 }
400
401 static void btusb_bulk_complete(struct urb *urb)
402 {
403         struct hci_dev *hdev = urb->context;
404         struct btusb_data *data = hdev->driver_data;
405         int err;
406
407         BT_DBG("%s urb %p status %d count %d", hdev->name,
408                                         urb, urb->status, urb->actual_length);
409
410         if (!test_bit(HCI_RUNNING, &hdev->flags))
411                 return;
412
413         if (urb->status == 0) {
414                 hdev->stat.byte_rx += urb->actual_length;
415
416                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
417                                                 urb->transfer_buffer,
418                                                 urb->actual_length) < 0) {
419                         BT_ERR("%s corrupted ACL packet", hdev->name);
420                         hdev->stat.err_rx++;
421                 }
422         } else if (urb->status == -ENOENT) {
423                 /* Avoid suspend failed when usb_kill_urb */
424                 return;
425         }
426
427         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
428                 return;
429
430         usb_anchor_urb(urb, &data->bulk_anchor);
431         usb_mark_last_busy(data->udev);
432
433         err = usb_submit_urb(urb, GFP_ATOMIC);
434         if (err < 0) {
435                 /* -EPERM: urb is being killed;
436                  * -ENODEV: device got disconnected */
437                 if (err != -EPERM && err != -ENODEV)
438                         BT_ERR("%s urb %p failed to resubmit (%d)",
439                                                 hdev->name, urb, -err);
440                 usb_unanchor_urb(urb);
441         }
442 }
443
444 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
445 {
446         struct btusb_data *data = hdev->driver_data;
447         struct urb *urb;
448         unsigned char *buf;
449         unsigned int pipe;
450         int err, size = HCI_MAX_FRAME_SIZE;
451
452         BT_DBG("%s", hdev->name);
453
454         if (!data->bulk_rx_ep)
455                 return -ENODEV;
456
457         urb = usb_alloc_urb(0, mem_flags);
458         if (!urb)
459                 return -ENOMEM;
460
461         buf = kmalloc(size, mem_flags);
462         if (!buf) {
463                 usb_free_urb(urb);
464                 return -ENOMEM;
465         }
466
467         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
468
469         usb_fill_bulk_urb(urb, data->udev, pipe,
470                                         buf, size, btusb_bulk_complete, hdev);
471
472         urb->transfer_flags |= URB_FREE_BUFFER;
473
474         usb_mark_last_busy(data->udev);
475         usb_anchor_urb(urb, &data->bulk_anchor);
476
477         err = usb_submit_urb(urb, mem_flags);
478         if (err < 0) {
479                 BT_ERR("%s urb %p submission failed (%d)",
480                                                 hdev->name, urb, -err);
481                 usb_unanchor_urb(urb);
482         }
483
484         usb_free_urb(urb);
485
486         return err;
487 }
488
489 static void btusb_isoc_complete(struct urb *urb)
490 {
491         struct hci_dev *hdev = urb->context;
492         struct btusb_data *data = hdev->driver_data;
493         int i, err;
494
495         BT_DBG("%s urb %p status %d count %d", hdev->name,
496                                         urb, urb->status, urb->actual_length);
497
498         if (!test_bit(HCI_RUNNING, &hdev->flags))
499                 return;
500
501         if (urb->status == 0) {
502                 for (i = 0; i < urb->number_of_packets; i++) {
503                         unsigned int offset = urb->iso_frame_desc[i].offset;
504                         unsigned int length = urb->iso_frame_desc[i].actual_length;
505
506                         if (urb->iso_frame_desc[i].status)
507                                 continue;
508
509                         hdev->stat.byte_rx += length;
510
511                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
512                                                 urb->transfer_buffer + offset,
513                                                                 length) < 0) {
514                                 BT_ERR("%s corrupted SCO packet", hdev->name);
515                                 hdev->stat.err_rx++;
516                         }
517                 }
518         } else if (urb->status == -ENOENT) {
519                 /* Avoid suspend failed when usb_kill_urb */
520                 return;
521         }
522
523         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
524                 return;
525
526         usb_anchor_urb(urb, &data->isoc_anchor);
527
528         err = usb_submit_urb(urb, GFP_ATOMIC);
529         if (err < 0) {
530                 /* -EPERM: urb is being killed;
531                  * -ENODEV: device got disconnected */
532                 if (err != -EPERM && err != -ENODEV)
533                         BT_ERR("%s urb %p failed to resubmit (%d)",
534                                                 hdev->name, urb, -err);
535                 usb_unanchor_urb(urb);
536         }
537 }
538
539 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
540 {
541         int i, offset = 0;
542
543         BT_DBG("len %d mtu %d", len, mtu);
544
545         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
546                                         i++, offset += mtu, len -= mtu) {
547                 urb->iso_frame_desc[i].offset = offset;
548                 urb->iso_frame_desc[i].length = mtu;
549         }
550
551         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
552                 urb->iso_frame_desc[i].offset = offset;
553                 urb->iso_frame_desc[i].length = len;
554                 i++;
555         }
556
557         urb->number_of_packets = i;
558 }
559
560 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
561 {
562         struct btusb_data *data = hdev->driver_data;
563         struct urb *urb;
564         unsigned char *buf;
565         unsigned int pipe;
566         int err, size;
567
568         BT_DBG("%s", hdev->name);
569
570         if (!data->isoc_rx_ep)
571                 return -ENODEV;
572
573         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
574         if (!urb)
575                 return -ENOMEM;
576
577         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
578                                                 BTUSB_MAX_ISOC_FRAMES;
579
580         buf = kmalloc(size, mem_flags);
581         if (!buf) {
582                 usb_free_urb(urb);
583                 return -ENOMEM;
584         }
585
586         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
587
588         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
589                                 hdev, data->isoc_rx_ep->bInterval);
590
591         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
592
593         __fill_isoc_descriptor(urb, size,
594                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
595
596         usb_anchor_urb(urb, &data->isoc_anchor);
597
598         err = usb_submit_urb(urb, mem_flags);
599         if (err < 0) {
600                 BT_ERR("%s urb %p submission failed (%d)",
601                                                 hdev->name, urb, -err);
602                 usb_unanchor_urb(urb);
603         }
604
605         usb_free_urb(urb);
606
607         return err;
608 }
609
610 static void btusb_tx_complete(struct urb *urb)
611 {
612         struct sk_buff *skb = urb->context;
613         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
614         struct btusb_data *data = hdev->driver_data;
615
616         BT_DBG("%s urb %p status %d count %d", hdev->name,
617                                         urb, urb->status, urb->actual_length);
618
619         if (!test_bit(HCI_RUNNING, &hdev->flags))
620                 goto done;
621
622         if (!urb->status)
623                 hdev->stat.byte_tx += urb->transfer_buffer_length;
624         else
625                 hdev->stat.err_tx++;
626
627 done:
628         spin_lock(&data->txlock);
629         data->tx_in_flight--;
630         spin_unlock(&data->txlock);
631
632         kfree(urb->setup_packet);
633
634         kfree_skb(skb);
635 }
636
637 static void btusb_isoc_tx_complete(struct urb *urb)
638 {
639         struct sk_buff *skb = urb->context;
640         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
641
642         BT_DBG("%s urb %p status %d count %d", hdev->name,
643                                         urb, urb->status, urb->actual_length);
644
645         if (!test_bit(HCI_RUNNING, &hdev->flags))
646                 goto done;
647
648         if (!urb->status)
649                 hdev->stat.byte_tx += urb->transfer_buffer_length;
650         else
651                 hdev->stat.err_tx++;
652
653 done:
654         kfree(urb->setup_packet);
655
656         kfree_skb(skb);
657 }
658
659 static int btusb_open(struct hci_dev *hdev)
660 {
661         struct btusb_data *data = hdev->driver_data;
662         int err;
663
664         BT_DBG("%s", hdev->name);
665
666         err = usb_autopm_get_interface(data->intf);
667         if (err < 0)
668                 return err;
669
670         data->intf->needs_remote_wakeup = 1;
671
672         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
673                 goto done;
674
675         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
676                 goto done;
677
678         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
679         if (err < 0)
680                 goto failed;
681
682         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
683         if (err < 0) {
684                 usb_kill_anchored_urbs(&data->intr_anchor);
685                 goto failed;
686         }
687
688         set_bit(BTUSB_BULK_RUNNING, &data->flags);
689         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
690
691 done:
692         usb_autopm_put_interface(data->intf);
693         return 0;
694
695 failed:
696         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
697         clear_bit(HCI_RUNNING, &hdev->flags);
698         usb_autopm_put_interface(data->intf);
699         return err;
700 }
701
702 static void btusb_stop_traffic(struct btusb_data *data)
703 {
704         usb_kill_anchored_urbs(&data->intr_anchor);
705         usb_kill_anchored_urbs(&data->bulk_anchor);
706         usb_kill_anchored_urbs(&data->isoc_anchor);
707 }
708
709 static int btusb_close(struct hci_dev *hdev)
710 {
711         struct btusb_data *data = hdev->driver_data;
712         int err;
713
714         BT_DBG("%s", hdev->name);
715
716         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
717                 return 0;
718
719         cancel_work_sync(&data->work);
720         cancel_work_sync(&data->waker);
721
722         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
723         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
724         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
725
726         btusb_stop_traffic(data);
727         err = usb_autopm_get_interface(data->intf);
728         if (err < 0)
729                 goto failed;
730
731         data->intf->needs_remote_wakeup = 0;
732         usb_autopm_put_interface(data->intf);
733
734 failed:
735         usb_scuttle_anchored_urbs(&data->deferred);
736         return 0;
737 }
738
739 static int btusb_flush(struct hci_dev *hdev)
740 {
741         struct btusb_data *data = hdev->driver_data;
742
743         BT_DBG("%s", hdev->name);
744
745         usb_kill_anchored_urbs(&data->tx_anchor);
746
747         return 0;
748 }
749
750 static int btusb_send_frame(struct sk_buff *skb)
751 {
752         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
753         struct btusb_data *data = hdev->driver_data;
754         struct usb_ctrlrequest *dr;
755         struct urb *urb;
756         unsigned int pipe;
757         int err;
758
759         BT_DBG("%s", hdev->name);
760
761         if (!test_bit(HCI_RUNNING, &hdev->flags))
762                 return -EBUSY;
763
764         switch (bt_cb(skb)->pkt_type) {
765         case HCI_COMMAND_PKT:
766                 urb = usb_alloc_urb(0, GFP_ATOMIC);
767                 if (!urb)
768                         return -ENOMEM;
769
770                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
771                 if (!dr) {
772                         usb_free_urb(urb);
773                         return -ENOMEM;
774                 }
775
776                 dr->bRequestType = data->cmdreq_type;
777                 dr->bRequest     = 0;
778                 dr->wIndex       = 0;
779                 dr->wValue       = 0;
780                 dr->wLength      = __cpu_to_le16(skb->len);
781
782                 pipe = usb_sndctrlpipe(data->udev, 0x00);
783
784                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
785                                 skb->data, skb->len, btusb_tx_complete, skb);
786
787                 hdev->stat.cmd_tx++;
788                 break;
789
790         case HCI_ACLDATA_PKT:
791                 if (!data->bulk_tx_ep)
792                         return -ENODEV;
793
794                 urb = usb_alloc_urb(0, GFP_ATOMIC);
795                 if (!urb)
796                         return -ENOMEM;
797
798                 pipe = usb_sndbulkpipe(data->udev,
799                                         data->bulk_tx_ep->bEndpointAddress);
800
801                 usb_fill_bulk_urb(urb, data->udev, pipe,
802                                 skb->data, skb->len, btusb_tx_complete, skb);
803
804                 hdev->stat.acl_tx++;
805                 break;
806
807         case HCI_SCODATA_PKT:
808                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
809                         return -ENODEV;
810
811                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
812                 if (!urb)
813                         return -ENOMEM;
814
815                 pipe = usb_sndisocpipe(data->udev,
816                                         data->isoc_tx_ep->bEndpointAddress);
817
818                 usb_fill_int_urb(urb, data->udev, pipe,
819                                 skb->data, skb->len, btusb_isoc_tx_complete,
820                                 skb, data->isoc_tx_ep->bInterval);
821
822                 urb->transfer_flags  = URB_ISO_ASAP;
823
824                 __fill_isoc_descriptor(urb, skb->len,
825                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
826
827                 hdev->stat.sco_tx++;
828                 goto skip_waking;
829
830         default:
831                 return -EILSEQ;
832         }
833
834         err = inc_tx(data);
835         if (err) {
836                 usb_anchor_urb(urb, &data->deferred);
837                 schedule_work(&data->waker);
838                 err = 0;
839                 goto done;
840         }
841
842 skip_waking:
843         usb_anchor_urb(urb, &data->tx_anchor);
844
845         err = usb_submit_urb(urb, GFP_ATOMIC);
846         if (err < 0) {
847                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
848                 kfree(urb->setup_packet);
849                 usb_unanchor_urb(urb);
850         } else {
851                 usb_mark_last_busy(data->udev);
852         }
853
854 done:
855         usb_free_urb(urb);
856         return err;
857 }
858
859 static void btusb_destruct(struct hci_dev *hdev)
860 {
861         struct btusb_data *data = hdev->driver_data;
862
863         BT_DBG("%s", hdev->name);
864
865         kfree(data);
866 }
867
868 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
869 {
870         struct btusb_data *data = hdev->driver_data;
871
872         BT_DBG("%s evt %d", hdev->name, evt);
873
874         if (hdev->conn_hash.sco_num != data->sco_num) {
875                 data->sco_num = hdev->conn_hash.sco_num;
876                 schedule_work(&data->work);
877         }
878 }
879
880 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
881 {
882         struct btusb_data *data = hdev->driver_data;
883         struct usb_interface *intf = data->isoc;
884         struct usb_endpoint_descriptor *ep_desc;
885         int i, err;
886
887         if (!data->isoc)
888                 return -ENODEV;
889
890         err = usb_set_interface(data->udev, 1, altsetting);
891         if (err < 0) {
892                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
893                 return err;
894         }
895
896         data->isoc_altsetting = altsetting;
897
898         data->isoc_tx_ep = NULL;
899         data->isoc_rx_ep = NULL;
900
901         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
902                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
903
904                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
905                         data->isoc_tx_ep = ep_desc;
906                         continue;
907                 }
908
909                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
910                         data->isoc_rx_ep = ep_desc;
911                         continue;
912                 }
913         }
914
915         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
916                 BT_ERR("%s invalid SCO descriptors", hdev->name);
917                 return -ENODEV;
918         }
919
920         return 0;
921 }
922
923 static void btusb_work(struct work_struct *work)
924 {
925         struct btusb_data *data = container_of(work, struct btusb_data, work);
926         struct hci_dev *hdev = data->hdev;
927         int err;
928
929         if (hdev->conn_hash.sco_num > 0) {
930                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
931                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
932                         if (err < 0) {
933                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
934                                 usb_kill_anchored_urbs(&data->isoc_anchor);
935                                 return;
936                         }
937
938                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
939                 }
940                 if (data->isoc_altsetting != 2) {
941                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
942                         usb_kill_anchored_urbs(&data->isoc_anchor);
943
944                         if (__set_isoc_interface(hdev, 2) < 0)
945                                 return;
946                 }
947
948                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
949                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
950                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
951                         else
952                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
953                 }
954         } else {
955                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
956                 usb_kill_anchored_urbs(&data->isoc_anchor);
957
958                 __set_isoc_interface(hdev, 0);
959                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
960                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
961         }
962 }
963
964 static void btusb_waker(struct work_struct *work)
965 {
966         struct btusb_data *data = container_of(work, struct btusb_data, waker);
967         int err;
968
969         err = usb_autopm_get_interface(data->intf);
970         if (err < 0)
971                 return;
972
973         usb_autopm_put_interface(data->intf);
974 }
975
976 static int btusb_probe(struct usb_interface *intf,
977                                 const struct usb_device_id *id)
978 {
979         struct usb_endpoint_descriptor *ep_desc;
980         struct btusb_data *data;
981         struct hci_dev *hdev;
982         int i, err;
983
984         BT_DBG("intf %p id %p", intf, id);
985
986         /* interface numbers are hardcoded in the spec */
987         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
988                 return -ENODEV;
989
990         if (!id->driver_info) {
991                 const struct usb_device_id *match;
992                 match = usb_match_id(intf, blacklist_table);
993                 if (match)
994                         id = match;
995         }
996
997         if (id->driver_info == BTUSB_IGNORE)
998                 return -ENODEV;
999
1000         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1001                 return -ENODEV;
1002
1003         if (ignore_csr && id->driver_info & BTUSB_CSR)
1004                 return -ENODEV;
1005
1006         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1007                 return -ENODEV;
1008
1009         if (id->driver_info & BTUSB_ATH3012) {
1010                 struct usb_device *udev = interface_to_usbdev(intf);
1011
1012                 /* Old firmware would otherwise let ath3k driver load
1013                  * patch and sysconfig files */
1014                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1015                         return -ENODEV;
1016         }
1017
1018         data = kzalloc(sizeof(*data), GFP_KERNEL);
1019         if (!data)
1020                 return -ENOMEM;
1021
1022         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1023                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1024
1025                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1026                         data->intr_ep = ep_desc;
1027                         continue;
1028                 }
1029
1030                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1031                         data->bulk_tx_ep = ep_desc;
1032                         continue;
1033                 }
1034
1035                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1036                         data->bulk_rx_ep = ep_desc;
1037                         continue;
1038                 }
1039         }
1040
1041         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
1042                 kfree(data);
1043                 return -ENODEV;
1044         }
1045
1046         data->cmdreq_type = USB_TYPE_CLASS;
1047
1048         data->udev = interface_to_usbdev(intf);
1049         data->intf = intf;
1050
1051         spin_lock_init(&data->lock);
1052
1053         INIT_WORK(&data->work, btusb_work);
1054         INIT_WORK(&data->waker, btusb_waker);
1055         spin_lock_init(&data->txlock);
1056
1057         init_usb_anchor(&data->tx_anchor);
1058         init_usb_anchor(&data->intr_anchor);
1059         init_usb_anchor(&data->bulk_anchor);
1060         init_usb_anchor(&data->isoc_anchor);
1061         init_usb_anchor(&data->deferred);
1062
1063         hdev = hci_alloc_dev();
1064         if (!hdev) {
1065                 kfree(data);
1066                 return -ENOMEM;
1067         }
1068
1069         hdev->bus = HCI_USB;
1070         hdev->driver_data = data;
1071
1072         data->hdev = hdev;
1073
1074         SET_HCIDEV_DEV(hdev, &intf->dev);
1075
1076         hdev->open     = btusb_open;
1077         hdev->close    = btusb_close;
1078         hdev->flush    = btusb_flush;
1079         hdev->send     = btusb_send_frame;
1080         hdev->destruct = btusb_destruct;
1081         hdev->notify   = btusb_notify;
1082
1083         hdev->owner = THIS_MODULE;
1084
1085         if (id->driver_info & BTUSB_INTEL_BOOT)
1086                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1087
1088         /* Interface numbers are hardcoded in the specification */
1089         data->isoc = usb_ifnum_to_if(data->udev, 1);
1090
1091         if (!reset)
1092                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1093
1094         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1095                 if (!disable_scofix)
1096                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1097         }
1098
1099         if (id->driver_info & BTUSB_BROKEN_ISOC)
1100                 data->isoc = NULL;
1101
1102         if (id->driver_info & BTUSB_DIGIANSWER) {
1103                 data->cmdreq_type = USB_TYPE_VENDOR;
1104                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1105         }
1106
1107         if (id->driver_info & BTUSB_CSR) {
1108                 struct usb_device *udev = data->udev;
1109
1110                 /* Old firmware would otherwise execute USB reset */
1111                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1112                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1113         }
1114
1115         if (id->driver_info & BTUSB_SNIFFER) {
1116                 struct usb_device *udev = data->udev;
1117
1118                 /* New sniffer firmware has crippled HCI interface */
1119                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1120                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1121
1122                 data->isoc = NULL;
1123         }
1124
1125         if (id->driver_info & BTUSB_BCM92035) {
1126                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1127                 struct sk_buff *skb;
1128
1129                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1130                 if (skb) {
1131                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1132                         skb_queue_tail(&hdev->driver_init, skb);
1133                 }
1134         }
1135
1136         if (data->isoc) {
1137                 err = usb_driver_claim_interface(&btusb_driver,
1138                                                         data->isoc, data);
1139                 if (err < 0) {
1140                         hci_free_dev(hdev);
1141                         kfree(data);
1142                         return err;
1143                 }
1144         }
1145
1146         err = hci_register_dev(hdev);
1147         if (err < 0) {
1148                 hci_free_dev(hdev);
1149                 kfree(data);
1150                 return err;
1151         }
1152
1153         usb_set_intfdata(intf, data);
1154
1155         return 0;
1156 }
1157
1158 static void btusb_disconnect(struct usb_interface *intf)
1159 {
1160         struct btusb_data *data = usb_get_intfdata(intf);
1161         struct hci_dev *hdev;
1162
1163         BT_DBG("intf %p", intf);
1164
1165         if (!data)
1166                 return;
1167
1168         hdev = data->hdev;
1169
1170         __hci_dev_hold(hdev);
1171
1172         usb_set_intfdata(data->intf, NULL);
1173
1174         if (data->isoc)
1175                 usb_set_intfdata(data->isoc, NULL);
1176
1177         hci_unregister_dev(hdev);
1178
1179         if (intf == data->isoc)
1180                 usb_driver_release_interface(&btusb_driver, data->intf);
1181         else if (data->isoc)
1182                 usb_driver_release_interface(&btusb_driver, data->isoc);
1183
1184         __hci_dev_put(hdev);
1185
1186         hci_free_dev(hdev);
1187 }
1188
1189 #ifdef CONFIG_PM
1190 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1191 {
1192         struct btusb_data *data = usb_get_intfdata(intf);
1193
1194         BT_DBG("intf %p", intf);
1195
1196         if (data->suspend_count++)
1197                 return 0;
1198
1199         spin_lock_irq(&data->txlock);
1200         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1201                 set_bit(BTUSB_SUSPENDING, &data->flags);
1202                 spin_unlock_irq(&data->txlock);
1203         } else {
1204                 spin_unlock_irq(&data->txlock);
1205                 data->suspend_count--;
1206                 return -EBUSY;
1207         }
1208
1209         cancel_work_sync(&data->work);
1210
1211         btusb_stop_traffic(data);
1212         usb_kill_anchored_urbs(&data->tx_anchor);
1213
1214         return 0;
1215 }
1216
1217 static void play_deferred(struct btusb_data *data)
1218 {
1219         struct urb *urb;
1220         int err;
1221
1222         while ((urb = usb_get_from_anchor(&data->deferred))) {
1223                 err = usb_submit_urb(urb, GFP_ATOMIC);
1224                 if (err < 0)
1225                         break;
1226
1227                 data->tx_in_flight++;
1228         }
1229         usb_scuttle_anchored_urbs(&data->deferred);
1230 }
1231
1232 static int btusb_resume(struct usb_interface *intf)
1233 {
1234         struct btusb_data *data = usb_get_intfdata(intf);
1235         struct hci_dev *hdev = data->hdev;
1236         int err = 0;
1237
1238         BT_DBG("intf %p", intf);
1239
1240         if (--data->suspend_count)
1241                 return 0;
1242
1243         if (!test_bit(HCI_RUNNING, &hdev->flags))
1244                 goto done;
1245
1246         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1247                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1248                 if (err < 0) {
1249                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1250                         goto failed;
1251                 }
1252         }
1253
1254         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1255                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1256                 if (err < 0) {
1257                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1258                         goto failed;
1259                 }
1260
1261                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1262         }
1263
1264         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1265                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1266                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1267                 else
1268                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1269         }
1270
1271         spin_lock_irq(&data->txlock);
1272         play_deferred(data);
1273         clear_bit(BTUSB_SUSPENDING, &data->flags);
1274         spin_unlock_irq(&data->txlock);
1275         schedule_work(&data->work);
1276
1277         return 0;
1278
1279 failed:
1280         usb_scuttle_anchored_urbs(&data->deferred);
1281 done:
1282         spin_lock_irq(&data->txlock);
1283         clear_bit(BTUSB_SUSPENDING, &data->flags);
1284         spin_unlock_irq(&data->txlock);
1285
1286         return err;
1287 }
1288 #endif
1289
1290 static struct usb_driver btusb_driver = {
1291         .name           = "btusb",
1292         .probe          = btusb_probe,
1293         .disconnect     = btusb_disconnect,
1294 #ifdef CONFIG_PM
1295         .suspend        = btusb_suspend,
1296         .resume         = btusb_resume,
1297 #endif
1298         .id_table       = btusb_table,
1299         .supports_autosuspend = 1,
1300 };
1301
1302 static int __init btusb_init(void)
1303 {
1304         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1305
1306         return usb_register(&btusb_driver);
1307 }
1308
1309 static void __exit btusb_exit(void)
1310 {
1311         usb_deregister(&btusb_driver);
1312 }
1313
1314 module_init(btusb_init);
1315 module_exit(btusb_exit);
1316
1317 module_param(ignore_dga, bool, 0644);
1318 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1319
1320 module_param(ignore_csr, bool, 0644);
1321 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1322
1323 module_param(ignore_sniffer, bool, 0644);
1324 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1325
1326 module_param(disable_scofix, bool, 0644);
1327 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1328
1329 module_param(force_scofix, bool, 0644);
1330 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1331
1332 module_param(reset, bool, 0644);
1333 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1334
1335 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1336 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1337 MODULE_VERSION(VERSION);
1338 MODULE_LICENSE("GPL");