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a84fab3c CL |
1 | /* |
2 | * Atheros CARL9170 driver | |
3 | * | |
4 | * USB - frontend | |
5 | * | |
6 | * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> | |
7 | * Copyright 2009, 2010, Christian Lamparter <chunkeey@googlemail.com> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; see the file COPYING. If not, see | |
21 | * http://www.gnu.org/licenses/. | |
22 | * | |
23 | * This file incorporates work covered by the following copyright and | |
24 | * permission notice: | |
25 | * Copyright (c) 2007-2008 Atheros Communications, Inc. | |
26 | * | |
27 | * Permission to use, copy, modify, and/or distribute this software for any | |
28 | * purpose with or without fee is hereby granted, provided that the above | |
29 | * copyright notice and this permission notice appear in all copies. | |
30 | * | |
31 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
32 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
33 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
34 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
35 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
36 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
37 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
38 | */ | |
39 | ||
40 | #include <linux/module.h> | |
41 | #include <linux/slab.h> | |
42 | #include <linux/usb.h> | |
43 | #include <linux/firmware.h> | |
44 | #include <linux/etherdevice.h> | |
45 | #include <linux/device.h> | |
46 | #include <net/mac80211.h> | |
47 | #include "carl9170.h" | |
48 | #include "cmd.h" | |
49 | #include "hw.h" | |
50 | #include "fwcmd.h" | |
51 | ||
52 | MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>"); | |
53 | MODULE_AUTHOR("Christian Lamparter <chunkeey@googlemail.com>"); | |
54 | MODULE_LICENSE("GPL"); | |
55 | MODULE_DESCRIPTION("Atheros AR9170 802.11n USB wireless"); | |
56 | MODULE_FIRMWARE(CARL9170FW_NAME); | |
57 | MODULE_ALIAS("ar9170usb"); | |
58 | MODULE_ALIAS("arusb_lnx"); | |
59 | ||
60 | /* | |
61 | * Note: | |
62 | * | |
63 | * Always update our wiki's device list (located at: | |
64 | * http://wireless.kernel.org/en/users/Drivers/ar9170/devices ), | |
65 | * whenever you add a new device. | |
66 | */ | |
67 | static struct usb_device_id carl9170_usb_ids[] = { | |
68 | /* Atheros 9170 */ | |
69 | { USB_DEVICE(0x0cf3, 0x9170) }, | |
70 | /* Atheros TG121N */ | |
71 | { USB_DEVICE(0x0cf3, 0x1001) }, | |
72 | /* TP-Link TL-WN821N v2 */ | |
73 | { USB_DEVICE(0x0cf3, 0x1002), .driver_info = CARL9170_WPS_BUTTON | | |
74 | CARL9170_ONE_LED }, | |
75 | /* 3Com Dual Band 802.11n USB Adapter */ | |
76 | { USB_DEVICE(0x0cf3, 0x1010) }, | |
77 | /* H3C Dual Band 802.11n USB Adapter */ | |
78 | { USB_DEVICE(0x0cf3, 0x1011) }, | |
79 | /* Cace Airpcap NX */ | |
80 | { USB_DEVICE(0xcace, 0x0300) }, | |
81 | /* D-Link DWA 160 A1 */ | |
82 | { USB_DEVICE(0x07d1, 0x3c10) }, | |
83 | /* D-Link DWA 160 A2 */ | |
84 | { USB_DEVICE(0x07d1, 0x3a09) }, | |
8df86db9 CL |
85 | /* D-Link DWA 130 D */ |
86 | { USB_DEVICE(0x07d1, 0x3a0f) }, | |
a84fab3c CL |
87 | /* Netgear WNA1000 */ |
88 | { USB_DEVICE(0x0846, 0x9040) }, | |
8df86db9 | 89 | /* Netgear WNDA3100 (v1) */ |
a84fab3c CL |
90 | { USB_DEVICE(0x0846, 0x9010) }, |
91 | /* Netgear WN111 v2 */ | |
92 | { USB_DEVICE(0x0846, 0x9001), .driver_info = CARL9170_ONE_LED }, | |
93 | /* Zydas ZD1221 */ | |
94 | { USB_DEVICE(0x0ace, 0x1221) }, | |
95 | /* Proxim ORiNOCO 802.11n USB */ | |
96 | { USB_DEVICE(0x1435, 0x0804) }, | |
97 | /* WNC Generic 11n USB Dongle */ | |
98 | { USB_DEVICE(0x1435, 0x0326) }, | |
99 | /* ZyXEL NWD271N */ | |
100 | { USB_DEVICE(0x0586, 0x3417) }, | |
101 | /* Z-Com UB81 BG */ | |
102 | { USB_DEVICE(0x0cde, 0x0023) }, | |
103 | /* Z-Com UB82 ABG */ | |
104 | { USB_DEVICE(0x0cde, 0x0026) }, | |
105 | /* Sphairon Homelink 1202 */ | |
106 | { USB_DEVICE(0x0cde, 0x0027) }, | |
107 | /* Arcadyan WN7512 */ | |
108 | { USB_DEVICE(0x083a, 0xf522) }, | |
109 | /* Planex GWUS300 */ | |
110 | { USB_DEVICE(0x2019, 0x5304) }, | |
111 | /* IO-Data WNGDNUS2 */ | |
112 | { USB_DEVICE(0x04bb, 0x093f) }, | |
113 | /* NEC WL300NU-G */ | |
114 | { USB_DEVICE(0x0409, 0x0249) }, | |
06a86ddb CL |
115 | /* NEC WL300NU-AG */ |
116 | { USB_DEVICE(0x0409, 0x02b4) }, | |
a84fab3c CL |
117 | /* AVM FRITZ!WLAN USB Stick N */ |
118 | { USB_DEVICE(0x057c, 0x8401) }, | |
119 | /* AVM FRITZ!WLAN USB Stick N 2.4 */ | |
120 | { USB_DEVICE(0x057c, 0x8402) }, | |
121 | /* Qwest/Actiontec 802AIN Wireless N USB Network Adapter */ | |
122 | { USB_DEVICE(0x1668, 0x1200) }, | |
c86664e5 JP |
123 | /* Airlive X.USB a/b/g/n */ |
124 | { USB_DEVICE(0x1b75, 0x9170) }, | |
a84fab3c CL |
125 | |
126 | /* terminate */ | |
127 | {} | |
128 | }; | |
129 | MODULE_DEVICE_TABLE(usb, carl9170_usb_ids); | |
130 | ||
131 | static void carl9170_usb_submit_data_urb(struct ar9170 *ar) | |
132 | { | |
133 | struct urb *urb; | |
134 | int err; | |
135 | ||
136 | if (atomic_inc_return(&ar->tx_anch_urbs) > AR9170_NUM_TX_URBS) | |
137 | goto err_acc; | |
138 | ||
139 | urb = usb_get_from_anchor(&ar->tx_wait); | |
140 | if (!urb) | |
141 | goto err_acc; | |
142 | ||
143 | usb_anchor_urb(urb, &ar->tx_anch); | |
144 | ||
145 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
146 | if (unlikely(err)) { | |
147 | if (net_ratelimit()) { | |
148 | dev_err(&ar->udev->dev, "tx submit failed (%d)\n", | |
149 | urb->status); | |
150 | } | |
151 | ||
152 | usb_unanchor_urb(urb); | |
153 | usb_anchor_urb(urb, &ar->tx_err); | |
154 | } | |
155 | ||
156 | usb_free_urb(urb); | |
157 | ||
158 | if (likely(err == 0)) | |
159 | return; | |
160 | ||
161 | err_acc: | |
162 | atomic_dec(&ar->tx_anch_urbs); | |
163 | } | |
164 | ||
165 | static void carl9170_usb_tx_data_complete(struct urb *urb) | |
166 | { | |
b2767363 | 167 | struct ar9170 *ar = usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0)); |
a84fab3c CL |
168 | |
169 | if (WARN_ON_ONCE(!ar)) { | |
170 | dev_kfree_skb_irq(urb->context); | |
171 | return; | |
172 | } | |
173 | ||
174 | atomic_dec(&ar->tx_anch_urbs); | |
175 | ||
176 | switch (urb->status) { | |
177 | /* everything is fine */ | |
178 | case 0: | |
179 | carl9170_tx_callback(ar, (void *)urb->context); | |
180 | break; | |
181 | ||
182 | /* disconnect */ | |
183 | case -ENOENT: | |
184 | case -ECONNRESET: | |
185 | case -ENODEV: | |
186 | case -ESHUTDOWN: | |
187 | /* | |
188 | * Defer the frame clean-up to the tasklet worker. | |
189 | * This is necessary, because carl9170_tx_drop | |
190 | * does not work in an irqsave context. | |
191 | */ | |
192 | usb_anchor_urb(urb, &ar->tx_err); | |
193 | return; | |
194 | ||
195 | /* a random transmission error has occurred? */ | |
196 | default: | |
197 | if (net_ratelimit()) { | |
198 | dev_err(&ar->udev->dev, "tx failed (%d)\n", | |
199 | urb->status); | |
200 | } | |
201 | ||
202 | usb_anchor_urb(urb, &ar->tx_err); | |
203 | break; | |
204 | } | |
205 | ||
206 | if (likely(IS_STARTED(ar))) | |
207 | carl9170_usb_submit_data_urb(ar); | |
208 | } | |
209 | ||
210 | static int carl9170_usb_submit_cmd_urb(struct ar9170 *ar) | |
211 | { | |
212 | struct urb *urb; | |
213 | int err; | |
214 | ||
215 | if (atomic_inc_return(&ar->tx_cmd_urbs) != 1) { | |
216 | atomic_dec(&ar->tx_cmd_urbs); | |
217 | return 0; | |
218 | } | |
219 | ||
220 | urb = usb_get_from_anchor(&ar->tx_cmd); | |
221 | if (!urb) { | |
222 | atomic_dec(&ar->tx_cmd_urbs); | |
223 | return 0; | |
224 | } | |
225 | ||
226 | usb_anchor_urb(urb, &ar->tx_anch); | |
227 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
228 | if (unlikely(err)) { | |
229 | usb_unanchor_urb(urb); | |
230 | atomic_dec(&ar->tx_cmd_urbs); | |
231 | } | |
232 | usb_free_urb(urb); | |
233 | ||
234 | return err; | |
235 | } | |
236 | ||
237 | static void carl9170_usb_cmd_complete(struct urb *urb) | |
238 | { | |
239 | struct ar9170 *ar = urb->context; | |
240 | int err = 0; | |
241 | ||
242 | if (WARN_ON_ONCE(!ar)) | |
243 | return; | |
244 | ||
245 | atomic_dec(&ar->tx_cmd_urbs); | |
246 | ||
247 | switch (urb->status) { | |
248 | /* everything is fine */ | |
249 | case 0: | |
250 | break; | |
251 | ||
252 | /* disconnect */ | |
253 | case -ENOENT: | |
254 | case -ECONNRESET: | |
255 | case -ENODEV: | |
256 | case -ESHUTDOWN: | |
257 | return; | |
258 | ||
259 | default: | |
260 | err = urb->status; | |
261 | break; | |
262 | } | |
263 | ||
264 | if (!IS_INITIALIZED(ar)) | |
265 | return; | |
266 | ||
267 | if (err) | |
268 | dev_err(&ar->udev->dev, "submit cmd cb failed (%d).\n", err); | |
269 | ||
270 | err = carl9170_usb_submit_cmd_urb(ar); | |
271 | if (err) | |
272 | dev_err(&ar->udev->dev, "submit cmd failed (%d).\n", err); | |
273 | } | |
274 | ||
275 | static void carl9170_usb_rx_irq_complete(struct urb *urb) | |
276 | { | |
277 | struct ar9170 *ar = urb->context; | |
278 | ||
279 | if (WARN_ON_ONCE(!ar)) | |
280 | return; | |
281 | ||
282 | switch (urb->status) { | |
283 | /* everything is fine */ | |
284 | case 0: | |
285 | break; | |
286 | ||
287 | /* disconnect */ | |
288 | case -ENOENT: | |
289 | case -ECONNRESET: | |
290 | case -ENODEV: | |
291 | case -ESHUTDOWN: | |
292 | return; | |
293 | ||
294 | default: | |
295 | goto resubmit; | |
296 | } | |
297 | ||
b4764c80 CL |
298 | /* |
299 | * While the carl9170 firmware does not use this EP, the | |
300 | * firmware loader in the EEPROM unfortunately does. | |
301 | * Therefore we need to be ready to handle out-of-band | |
302 | * responses and traps in case the firmware crashed and | |
303 | * the loader took over again. | |
304 | */ | |
a84fab3c CL |
305 | carl9170_handle_command_response(ar, urb->transfer_buffer, |
306 | urb->actual_length); | |
307 | ||
308 | resubmit: | |
309 | usb_anchor_urb(urb, &ar->rx_anch); | |
310 | if (unlikely(usb_submit_urb(urb, GFP_ATOMIC))) | |
311 | usb_unanchor_urb(urb); | |
312 | } | |
313 | ||
314 | static int carl9170_usb_submit_rx_urb(struct ar9170 *ar, gfp_t gfp) | |
315 | { | |
316 | struct urb *urb; | |
317 | int err = 0, runs = 0; | |
318 | ||
319 | while ((atomic_read(&ar->rx_anch_urbs) < AR9170_NUM_RX_URBS) && | |
320 | (runs++ < AR9170_NUM_RX_URBS)) { | |
321 | err = -ENOSPC; | |
322 | urb = usb_get_from_anchor(&ar->rx_pool); | |
323 | if (urb) { | |
324 | usb_anchor_urb(urb, &ar->rx_anch); | |
325 | err = usb_submit_urb(urb, gfp); | |
326 | if (unlikely(err)) { | |
327 | usb_unanchor_urb(urb); | |
328 | usb_anchor_urb(urb, &ar->rx_pool); | |
329 | } else { | |
330 | atomic_dec(&ar->rx_pool_urbs); | |
331 | atomic_inc(&ar->rx_anch_urbs); | |
332 | } | |
333 | usb_free_urb(urb); | |
334 | } | |
335 | } | |
336 | ||
337 | return err; | |
338 | } | |
339 | ||
340 | static void carl9170_usb_rx_work(struct ar9170 *ar) | |
341 | { | |
342 | struct urb *urb; | |
343 | int i; | |
344 | ||
345 | for (i = 0; i < AR9170_NUM_RX_URBS_POOL; i++) { | |
346 | urb = usb_get_from_anchor(&ar->rx_work); | |
347 | if (!urb) | |
348 | break; | |
349 | ||
350 | atomic_dec(&ar->rx_work_urbs); | |
351 | if (IS_INITIALIZED(ar)) { | |
352 | carl9170_rx(ar, urb->transfer_buffer, | |
353 | urb->actual_length); | |
354 | } | |
355 | ||
356 | usb_anchor_urb(urb, &ar->rx_pool); | |
357 | atomic_inc(&ar->rx_pool_urbs); | |
358 | ||
359 | usb_free_urb(urb); | |
360 | ||
361 | carl9170_usb_submit_rx_urb(ar, GFP_ATOMIC); | |
362 | } | |
363 | } | |
364 | ||
365 | void carl9170_usb_handle_tx_err(struct ar9170 *ar) | |
366 | { | |
367 | struct urb *urb; | |
368 | ||
369 | while ((urb = usb_get_from_anchor(&ar->tx_err))) { | |
370 | struct sk_buff *skb = (void *)urb->context; | |
371 | ||
372 | carl9170_tx_drop(ar, skb); | |
373 | carl9170_tx_callback(ar, skb); | |
374 | usb_free_urb(urb); | |
375 | } | |
376 | } | |
377 | ||
378 | static void carl9170_usb_tasklet(unsigned long data) | |
379 | { | |
380 | struct ar9170 *ar = (struct ar9170 *) data; | |
381 | ||
cf6487d0 CL |
382 | if (!IS_INITIALIZED(ar)) |
383 | return; | |
384 | ||
a84fab3c CL |
385 | carl9170_usb_rx_work(ar); |
386 | ||
387 | /* | |
388 | * Strictly speaking: The tx scheduler is not part of the USB system. | |
389 | * But the rx worker returns frames back to the mac80211-stack and | |
390 | * this is the _perfect_ place to generate the next transmissions. | |
391 | */ | |
392 | if (IS_STARTED(ar)) | |
393 | carl9170_tx_scheduler(ar); | |
394 | } | |
395 | ||
396 | static void carl9170_usb_rx_complete(struct urb *urb) | |
397 | { | |
398 | struct ar9170 *ar = (struct ar9170 *)urb->context; | |
399 | int err; | |
400 | ||
401 | if (WARN_ON_ONCE(!ar)) | |
402 | return; | |
403 | ||
404 | atomic_dec(&ar->rx_anch_urbs); | |
405 | ||
406 | switch (urb->status) { | |
407 | case 0: | |
408 | /* rx path */ | |
409 | usb_anchor_urb(urb, &ar->rx_work); | |
410 | atomic_inc(&ar->rx_work_urbs); | |
411 | break; | |
412 | ||
413 | case -ENOENT: | |
414 | case -ECONNRESET: | |
415 | case -ENODEV: | |
416 | case -ESHUTDOWN: | |
417 | /* handle disconnect events*/ | |
418 | return; | |
419 | ||
420 | default: | |
421 | /* handle all other errors */ | |
422 | usb_anchor_urb(urb, &ar->rx_pool); | |
423 | atomic_inc(&ar->rx_pool_urbs); | |
424 | break; | |
425 | } | |
426 | ||
427 | err = carl9170_usb_submit_rx_urb(ar, GFP_ATOMIC); | |
428 | if (unlikely(err)) { | |
429 | /* | |
430 | * usb_submit_rx_urb reported a problem. | |
431 | * In case this is due to a rx buffer shortage, | |
432 | * elevate the tasklet worker priority to | |
433 | * the highest available level. | |
434 | */ | |
435 | tasklet_hi_schedule(&ar->usb_tasklet); | |
436 | ||
437 | if (atomic_read(&ar->rx_anch_urbs) == 0) { | |
438 | /* | |
439 | * The system is too slow to cope with | |
440 | * the enormous workload. We have simply | |
441 | * run out of active rx urbs and this | |
25985edc | 442 | * unfortunately leads to an unpredictable |
a84fab3c CL |
443 | * device. |
444 | */ | |
445 | ||
e4a668c5 | 446 | ieee80211_queue_work(ar->hw, &ar->ping_work); |
a84fab3c CL |
447 | } |
448 | } else { | |
449 | /* | |
450 | * Using anything less than _high_ priority absolutely | |
451 | * kills the rx performance my UP-System... | |
452 | */ | |
453 | tasklet_hi_schedule(&ar->usb_tasklet); | |
454 | } | |
455 | } | |
456 | ||
457 | static struct urb *carl9170_usb_alloc_rx_urb(struct ar9170 *ar, gfp_t gfp) | |
458 | { | |
459 | struct urb *urb; | |
460 | void *buf; | |
461 | ||
462 | buf = kmalloc(ar->fw.rx_size, gfp); | |
463 | if (!buf) | |
464 | return NULL; | |
465 | ||
466 | urb = usb_alloc_urb(0, gfp); | |
467 | if (!urb) { | |
468 | kfree(buf); | |
469 | return NULL; | |
470 | } | |
471 | ||
472 | usb_fill_bulk_urb(urb, ar->udev, usb_rcvbulkpipe(ar->udev, | |
473 | AR9170_USB_EP_RX), buf, ar->fw.rx_size, | |
474 | carl9170_usb_rx_complete, ar); | |
475 | ||
476 | urb->transfer_flags |= URB_FREE_BUFFER; | |
477 | ||
478 | return urb; | |
479 | } | |
480 | ||
481 | static int carl9170_usb_send_rx_irq_urb(struct ar9170 *ar) | |
482 | { | |
483 | struct urb *urb = NULL; | |
484 | void *ibuf; | |
485 | int err = -ENOMEM; | |
486 | ||
487 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
488 | if (!urb) | |
489 | goto out; | |
490 | ||
491 | ibuf = kmalloc(AR9170_USB_EP_CTRL_MAX, GFP_KERNEL); | |
492 | if (!ibuf) | |
493 | goto out; | |
494 | ||
495 | usb_fill_int_urb(urb, ar->udev, usb_rcvintpipe(ar->udev, | |
496 | AR9170_USB_EP_IRQ), ibuf, AR9170_USB_EP_CTRL_MAX, | |
497 | carl9170_usb_rx_irq_complete, ar, 1); | |
498 | ||
499 | urb->transfer_flags |= URB_FREE_BUFFER; | |
500 | ||
501 | usb_anchor_urb(urb, &ar->rx_anch); | |
502 | err = usb_submit_urb(urb, GFP_KERNEL); | |
503 | if (err) | |
504 | usb_unanchor_urb(urb); | |
505 | ||
506 | out: | |
507 | usb_free_urb(urb); | |
508 | return err; | |
509 | } | |
510 | ||
511 | static int carl9170_usb_init_rx_bulk_urbs(struct ar9170 *ar) | |
512 | { | |
513 | struct urb *urb; | |
514 | int i, err = -EINVAL; | |
515 | ||
516 | /* | |
517 | * The driver actively maintains a second shadow | |
518 | * pool for inactive, but fully-prepared rx urbs. | |
519 | * | |
520 | * The pool should help the driver to master huge | |
521 | * workload spikes without running the risk of | |
522 | * undersupplying the hardware or wasting time by | |
523 | * processing rx data (streams) inside the urb | |
524 | * completion (hardirq context). | |
525 | */ | |
526 | for (i = 0; i < AR9170_NUM_RX_URBS_POOL; i++) { | |
527 | urb = carl9170_usb_alloc_rx_urb(ar, GFP_KERNEL); | |
528 | if (!urb) { | |
529 | err = -ENOMEM; | |
530 | goto err_out; | |
531 | } | |
532 | ||
533 | usb_anchor_urb(urb, &ar->rx_pool); | |
534 | atomic_inc(&ar->rx_pool_urbs); | |
535 | usb_free_urb(urb); | |
536 | } | |
537 | ||
538 | err = carl9170_usb_submit_rx_urb(ar, GFP_KERNEL); | |
539 | if (err) | |
540 | goto err_out; | |
541 | ||
542 | /* the device now waiting for the firmware. */ | |
543 | carl9170_set_state_when(ar, CARL9170_STOPPED, CARL9170_IDLE); | |
544 | return 0; | |
545 | ||
546 | err_out: | |
547 | ||
548 | usb_scuttle_anchored_urbs(&ar->rx_pool); | |
549 | usb_scuttle_anchored_urbs(&ar->rx_work); | |
550 | usb_kill_anchored_urbs(&ar->rx_anch); | |
551 | return err; | |
552 | } | |
553 | ||
554 | static int carl9170_usb_flush(struct ar9170 *ar) | |
555 | { | |
556 | struct urb *urb; | |
557 | int ret, err = 0; | |
558 | ||
559 | while ((urb = usb_get_from_anchor(&ar->tx_wait))) { | |
560 | struct sk_buff *skb = (void *)urb->context; | |
561 | carl9170_tx_drop(ar, skb); | |
562 | carl9170_tx_callback(ar, skb); | |
563 | usb_free_urb(urb); | |
564 | } | |
565 | ||
dfa31fef | 566 | ret = usb_wait_anchor_empty_timeout(&ar->tx_cmd, 1000); |
a84fab3c CL |
567 | if (ret == 0) |
568 | err = -ETIMEDOUT; | |
569 | ||
570 | /* lets wait a while until the tx - queues are dried out */ | |
dfa31fef | 571 | ret = usb_wait_anchor_empty_timeout(&ar->tx_anch, 1000); |
a84fab3c CL |
572 | if (ret == 0) |
573 | err = -ETIMEDOUT; | |
574 | ||
575 | usb_kill_anchored_urbs(&ar->tx_anch); | |
576 | carl9170_usb_handle_tx_err(ar); | |
577 | ||
578 | return err; | |
579 | } | |
580 | ||
581 | static void carl9170_usb_cancel_urbs(struct ar9170 *ar) | |
582 | { | |
583 | int err; | |
584 | ||
585 | carl9170_set_state(ar, CARL9170_UNKNOWN_STATE); | |
586 | ||
587 | err = carl9170_usb_flush(ar); | |
588 | if (err) | |
589 | dev_err(&ar->udev->dev, "stuck tx urbs!\n"); | |
590 | ||
591 | usb_poison_anchored_urbs(&ar->tx_anch); | |
592 | carl9170_usb_handle_tx_err(ar); | |
593 | usb_poison_anchored_urbs(&ar->rx_anch); | |
594 | ||
595 | tasklet_kill(&ar->usb_tasklet); | |
596 | ||
597 | usb_scuttle_anchored_urbs(&ar->rx_work); | |
598 | usb_scuttle_anchored_urbs(&ar->rx_pool); | |
599 | usb_scuttle_anchored_urbs(&ar->tx_cmd); | |
600 | } | |
601 | ||
602 | int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd, | |
603 | const bool free_buf) | |
604 | { | |
605 | struct urb *urb; | |
cae7f953 | 606 | int err = 0; |
a84fab3c | 607 | |
cae7f953 CL |
608 | if (!IS_INITIALIZED(ar)) { |
609 | err = -EPERM; | |
610 | goto err_free; | |
611 | } | |
a84fab3c | 612 | |
cae7f953 CL |
613 | if (WARN_ON(cmd->hdr.len > CARL9170_MAX_CMD_LEN - 4)) { |
614 | err = -EINVAL; | |
615 | goto err_free; | |
616 | } | |
a84fab3c CL |
617 | |
618 | urb = usb_alloc_urb(0, GFP_ATOMIC); | |
cae7f953 CL |
619 | if (!urb) { |
620 | err = -ENOMEM; | |
621 | goto err_free; | |
622 | } | |
a84fab3c CL |
623 | |
624 | usb_fill_int_urb(urb, ar->udev, usb_sndintpipe(ar->udev, | |
625 | AR9170_USB_EP_CMD), cmd, cmd->hdr.len + 4, | |
626 | carl9170_usb_cmd_complete, ar, 1); | |
627 | ||
a84fab3c CL |
628 | if (free_buf) |
629 | urb->transfer_flags |= URB_FREE_BUFFER; | |
630 | ||
631 | usb_anchor_urb(urb, &ar->tx_cmd); | |
632 | usb_free_urb(urb); | |
633 | ||
634 | return carl9170_usb_submit_cmd_urb(ar); | |
cae7f953 CL |
635 | |
636 | err_free: | |
637 | if (free_buf) | |
638 | kfree(cmd); | |
639 | ||
640 | return err; | |
a84fab3c CL |
641 | } |
642 | ||
643 | int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids cmd, | |
644 | unsigned int plen, void *payload, unsigned int outlen, void *out) | |
645 | { | |
646 | int err = -ENOMEM; | |
647 | ||
648 | if (!IS_ACCEPTING_CMD(ar)) | |
649 | return -EIO; | |
650 | ||
651 | if (!(cmd & CARL9170_CMD_ASYNC_FLAG)) | |
652 | might_sleep(); | |
653 | ||
654 | ar->cmd.hdr.len = plen; | |
655 | ar->cmd.hdr.cmd = cmd; | |
656 | /* writing multiple regs fills this buffer already */ | |
657 | if (plen && payload != (u8 *)(ar->cmd.data)) | |
658 | memcpy(ar->cmd.data, payload, plen); | |
659 | ||
660 | spin_lock_bh(&ar->cmd_lock); | |
661 | ar->readbuf = (u8 *)out; | |
662 | ar->readlen = outlen; | |
663 | spin_unlock_bh(&ar->cmd_lock); | |
664 | ||
665 | err = __carl9170_exec_cmd(ar, &ar->cmd, false); | |
666 | ||
667 | if (!(cmd & CARL9170_CMD_ASYNC_FLAG)) { | |
668 | err = wait_for_completion_timeout(&ar->cmd_wait, HZ); | |
669 | if (err == 0) { | |
670 | err = -ETIMEDOUT; | |
671 | goto err_unbuf; | |
672 | } | |
673 | ||
674 | if (ar->readlen != outlen) { | |
675 | err = -EMSGSIZE; | |
676 | goto err_unbuf; | |
677 | } | |
678 | } | |
679 | ||
680 | return 0; | |
681 | ||
682 | err_unbuf: | |
683 | /* Maybe the device was removed in the moment we were waiting? */ | |
684 | if (IS_STARTED(ar)) { | |
685 | dev_err(&ar->udev->dev, "no command feedback " | |
686 | "received (%d).\n", err); | |
687 | ||
688 | /* provide some maybe useful debug information */ | |
689 | print_hex_dump_bytes("carl9170 cmd: ", DUMP_PREFIX_NONE, | |
690 | &ar->cmd, plen + 4); | |
691 | ||
692 | carl9170_restart(ar, CARL9170_RR_COMMAND_TIMEOUT); | |
693 | } | |
694 | ||
695 | /* invalidate to avoid completing the next command prematurely */ | |
696 | spin_lock_bh(&ar->cmd_lock); | |
697 | ar->readbuf = NULL; | |
698 | ar->readlen = 0; | |
699 | spin_unlock_bh(&ar->cmd_lock); | |
700 | ||
701 | return err; | |
702 | } | |
703 | ||
704 | void carl9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb) | |
705 | { | |
706 | struct urb *urb; | |
707 | struct ar9170_stream *tx_stream; | |
708 | void *data; | |
709 | unsigned int len; | |
710 | ||
711 | if (!IS_STARTED(ar)) | |
712 | goto err_drop; | |
713 | ||
714 | urb = usb_alloc_urb(0, GFP_ATOMIC); | |
715 | if (!urb) | |
716 | goto err_drop; | |
717 | ||
718 | if (ar->fw.tx_stream) { | |
719 | tx_stream = (void *) (skb->data - sizeof(*tx_stream)); | |
720 | ||
721 | len = skb->len + sizeof(*tx_stream); | |
722 | tx_stream->length = cpu_to_le16(len); | |
723 | tx_stream->tag = cpu_to_le16(AR9170_TX_STREAM_TAG); | |
724 | data = tx_stream; | |
725 | } else { | |
726 | data = skb->data; | |
727 | len = skb->len; | |
728 | } | |
729 | ||
730 | usb_fill_bulk_urb(urb, ar->udev, usb_sndbulkpipe(ar->udev, | |
731 | AR9170_USB_EP_TX), data, len, | |
732 | carl9170_usb_tx_data_complete, skb); | |
733 | ||
734 | urb->transfer_flags |= URB_ZERO_PACKET; | |
735 | ||
736 | usb_anchor_urb(urb, &ar->tx_wait); | |
737 | ||
738 | usb_free_urb(urb); | |
739 | ||
740 | carl9170_usb_submit_data_urb(ar); | |
741 | return; | |
742 | ||
743 | err_drop: | |
744 | carl9170_tx_drop(ar, skb); | |
745 | carl9170_tx_callback(ar, skb); | |
746 | } | |
747 | ||
748 | static void carl9170_release_firmware(struct ar9170 *ar) | |
749 | { | |
750 | if (ar->fw.fw) { | |
751 | release_firmware(ar->fw.fw); | |
752 | memset(&ar->fw, 0, sizeof(ar->fw)); | |
753 | } | |
754 | } | |
755 | ||
756 | void carl9170_usb_stop(struct ar9170 *ar) | |
757 | { | |
758 | int ret; | |
759 | ||
760 | carl9170_set_state_when(ar, CARL9170_IDLE, CARL9170_STOPPED); | |
761 | ||
762 | ret = carl9170_usb_flush(ar); | |
763 | if (ret) | |
764 | dev_err(&ar->udev->dev, "kill pending tx urbs.\n"); | |
765 | ||
766 | usb_poison_anchored_urbs(&ar->tx_anch); | |
767 | carl9170_usb_handle_tx_err(ar); | |
768 | ||
769 | /* kill any pending command */ | |
770 | spin_lock_bh(&ar->cmd_lock); | |
771 | ar->readlen = 0; | |
772 | spin_unlock_bh(&ar->cmd_lock); | |
773 | complete_all(&ar->cmd_wait); | |
774 | ||
775 | /* This is required to prevent an early completion on _start */ | |
16735d02 | 776 | reinit_completion(&ar->cmd_wait); |
a84fab3c CL |
777 | |
778 | /* | |
779 | * Note: | |
780 | * So far we freed all tx urbs, but we won't dare to touch any rx urbs. | |
781 | * Else we would end up with a unresponsive device... | |
782 | */ | |
783 | } | |
784 | ||
785 | int carl9170_usb_open(struct ar9170 *ar) | |
786 | { | |
787 | usb_unpoison_anchored_urbs(&ar->tx_anch); | |
788 | ||
789 | carl9170_set_state_when(ar, CARL9170_STOPPED, CARL9170_IDLE); | |
790 | return 0; | |
791 | } | |
792 | ||
793 | static int carl9170_usb_load_firmware(struct ar9170 *ar) | |
794 | { | |
795 | const u8 *data; | |
796 | u8 *buf; | |
797 | unsigned int transfer; | |
798 | size_t len; | |
799 | u32 addr; | |
800 | int err = 0; | |
801 | ||
802 | buf = kmalloc(4096, GFP_KERNEL); | |
803 | if (!buf) { | |
804 | err = -ENOMEM; | |
805 | goto err_out; | |
806 | } | |
807 | ||
808 | data = ar->fw.fw->data; | |
809 | len = ar->fw.fw->size; | |
810 | addr = ar->fw.address; | |
811 | ||
812 | /* this removes the miniboot image */ | |
813 | data += ar->fw.offset; | |
814 | len -= ar->fw.offset; | |
815 | ||
816 | while (len) { | |
817 | transfer = min_t(unsigned int, len, 4096u); | |
818 | memcpy(buf, data, transfer); | |
819 | ||
820 | err = usb_control_msg(ar->udev, usb_sndctrlpipe(ar->udev, 0), | |
821 | 0x30 /* FW DL */, 0x40 | USB_DIR_OUT, | |
822 | addr >> 8, 0, buf, transfer, 100); | |
823 | ||
824 | if (err < 0) { | |
825 | kfree(buf); | |
826 | goto err_out; | |
827 | } | |
828 | ||
829 | len -= transfer; | |
830 | data += transfer; | |
831 | addr += transfer; | |
832 | } | |
833 | kfree(buf); | |
834 | ||
835 | err = usb_control_msg(ar->udev, usb_sndctrlpipe(ar->udev, 0), | |
836 | 0x31 /* FW DL COMPLETE */, | |
837 | 0x40 | USB_DIR_OUT, 0, 0, NULL, 0, 200); | |
838 | ||
839 | if (wait_for_completion_timeout(&ar->fw_boot_wait, HZ) == 0) { | |
840 | err = -ETIMEDOUT; | |
841 | goto err_out; | |
842 | } | |
843 | ||
844 | err = carl9170_echo_test(ar, 0x4a110123); | |
845 | if (err) | |
846 | goto err_out; | |
847 | ||
97e2c402 | 848 | /* now, start the command response counter */ |
a84fab3c CL |
849 | ar->cmd_seq = -1; |
850 | ||
851 | return 0; | |
852 | ||
853 | err_out: | |
854 | dev_err(&ar->udev->dev, "firmware upload failed (%d).\n", err); | |
855 | return err; | |
856 | } | |
857 | ||
858 | int carl9170_usb_restart(struct ar9170 *ar) | |
859 | { | |
860 | int err = 0; | |
861 | ||
862 | if (ar->intf->condition != USB_INTERFACE_BOUND) | |
863 | return 0; | |
864 | ||
97e2c402 CL |
865 | /* |
866 | * Disable the command response sequence counter check. | |
867 | * We already know that the device/firmware is in a bad state. | |
868 | * So, no extra points are awarded to anyone who reminds the | |
869 | * driver about that. | |
870 | */ | |
a84fab3c CL |
871 | ar->cmd_seq = -2; |
872 | ||
873 | err = carl9170_reboot(ar); | |
874 | ||
875 | carl9170_usb_stop(ar); | |
876 | ||
a84fab3c CL |
877 | if (err) |
878 | goto err_out; | |
879 | ||
880 | tasklet_schedule(&ar->usb_tasklet); | |
881 | ||
882 | /* The reboot procedure can take quite a while to complete. */ | |
883 | msleep(1100); | |
884 | ||
885 | err = carl9170_usb_open(ar); | |
886 | if (err) | |
887 | goto err_out; | |
888 | ||
889 | err = carl9170_usb_load_firmware(ar); | |
890 | if (err) | |
891 | goto err_out; | |
892 | ||
893 | return 0; | |
894 | ||
895 | err_out: | |
896 | carl9170_usb_cancel_urbs(ar); | |
897 | return err; | |
898 | } | |
899 | ||
900 | void carl9170_usb_reset(struct ar9170 *ar) | |
901 | { | |
902 | /* | |
903 | * This is the last resort to get the device going again | |
904 | * without any *user replugging action*. | |
905 | * | |
906 | * But there is a catch: usb_reset really is like a physical | |
907 | * *reconnect*. The mac80211 state will be lost in the process. | |
908 | * Therefore a userspace application, which is monitoring | |
909 | * the link must step in. | |
910 | */ | |
911 | carl9170_usb_cancel_urbs(ar); | |
912 | ||
913 | carl9170_usb_stop(ar); | |
914 | ||
915 | usb_queue_reset_device(ar->intf); | |
916 | } | |
917 | ||
918 | static int carl9170_usb_init_device(struct ar9170 *ar) | |
919 | { | |
920 | int err; | |
921 | ||
97e2c402 CL |
922 | /* |
923 | * The carl9170 firmware let's the driver know when it's | |
924 | * ready for action. But we have to be prepared to gracefully | |
925 | * handle all spurious [flushed] messages after each (re-)boot. | |
926 | * Thus the command response counter remains disabled until it | |
927 | * can be safely synchronized. | |
928 | */ | |
929 | ar->cmd_seq = -2; | |
930 | ||
a84fab3c CL |
931 | err = carl9170_usb_send_rx_irq_urb(ar); |
932 | if (err) | |
933 | goto err_out; | |
934 | ||
935 | err = carl9170_usb_init_rx_bulk_urbs(ar); | |
936 | if (err) | |
937 | goto err_unrx; | |
938 | ||
97e2c402 CL |
939 | err = carl9170_usb_open(ar); |
940 | if (err) | |
941 | goto err_unrx; | |
942 | ||
a84fab3c CL |
943 | mutex_lock(&ar->mutex); |
944 | err = carl9170_usb_load_firmware(ar); | |
945 | mutex_unlock(&ar->mutex); | |
946 | if (err) | |
97e2c402 | 947 | goto err_stop; |
a84fab3c CL |
948 | |
949 | return 0; | |
950 | ||
97e2c402 CL |
951 | err_stop: |
952 | carl9170_usb_stop(ar); | |
953 | ||
a84fab3c CL |
954 | err_unrx: |
955 | carl9170_usb_cancel_urbs(ar); | |
956 | ||
957 | err_out: | |
958 | return err; | |
959 | } | |
960 | ||
961 | static void carl9170_usb_firmware_failed(struct ar9170 *ar) | |
962 | { | |
963 | struct device *parent = ar->udev->dev.parent; | |
964 | struct usb_device *udev; | |
965 | ||
966 | /* | |
967 | * Store a copy of the usb_device pointer locally. | |
968 | * This is because device_release_driver initiates | |
969 | * carl9170_usb_disconnect, which in turn frees our | |
970 | * driver context (ar). | |
971 | */ | |
972 | udev = ar->udev; | |
973 | ||
974 | complete(&ar->fw_load_wait); | |
975 | ||
976 | /* unbind anything failed */ | |
977 | if (parent) | |
978 | device_lock(parent); | |
979 | ||
980 | device_release_driver(&udev->dev); | |
981 | if (parent) | |
982 | device_unlock(parent); | |
983 | ||
984 | usb_put_dev(udev); | |
985 | } | |
986 | ||
987 | static void carl9170_usb_firmware_finish(struct ar9170 *ar) | |
988 | { | |
989 | int err; | |
990 | ||
991 | err = carl9170_parse_firmware(ar); | |
992 | if (err) | |
993 | goto err_freefw; | |
994 | ||
995 | err = carl9170_usb_init_device(ar); | |
996 | if (err) | |
997 | goto err_freefw; | |
998 | ||
a84fab3c CL |
999 | err = carl9170_register(ar); |
1000 | ||
1001 | carl9170_usb_stop(ar); | |
1002 | if (err) | |
1003 | goto err_unrx; | |
1004 | ||
1005 | complete(&ar->fw_load_wait); | |
1006 | usb_put_dev(ar->udev); | |
1007 | return; | |
1008 | ||
1009 | err_unrx: | |
1010 | carl9170_usb_cancel_urbs(ar); | |
1011 | ||
1012 | err_freefw: | |
1013 | carl9170_release_firmware(ar); | |
1014 | carl9170_usb_firmware_failed(ar); | |
1015 | } | |
1016 | ||
1017 | static void carl9170_usb_firmware_step2(const struct firmware *fw, | |
1018 | void *context) | |
1019 | { | |
1020 | struct ar9170 *ar = context; | |
1021 | ||
1022 | if (fw) { | |
1023 | ar->fw.fw = fw; | |
1024 | carl9170_usb_firmware_finish(ar); | |
1025 | return; | |
1026 | } | |
1027 | ||
1028 | dev_err(&ar->udev->dev, "firmware not found.\n"); | |
1029 | carl9170_usb_firmware_failed(ar); | |
1030 | } | |
1031 | ||
1032 | static int carl9170_usb_probe(struct usb_interface *intf, | |
1033 | const struct usb_device_id *id) | |
1034 | { | |
1035 | struct ar9170 *ar; | |
1036 | struct usb_device *udev; | |
1037 | int err; | |
1038 | ||
1039 | err = usb_reset_device(interface_to_usbdev(intf)); | |
1040 | if (err) | |
1041 | return err; | |
1042 | ||
1043 | ar = carl9170_alloc(sizeof(*ar)); | |
1044 | if (IS_ERR(ar)) | |
1045 | return PTR_ERR(ar); | |
1046 | ||
1047 | udev = interface_to_usbdev(intf); | |
1048 | usb_get_dev(udev); | |
1049 | ar->udev = udev; | |
1050 | ar->intf = intf; | |
1051 | ar->features = id->driver_info; | |
1052 | ||
1053 | usb_set_intfdata(intf, ar); | |
1054 | SET_IEEE80211_DEV(ar->hw, &intf->dev); | |
1055 | ||
1056 | init_usb_anchor(&ar->rx_anch); | |
1057 | init_usb_anchor(&ar->rx_pool); | |
1058 | init_usb_anchor(&ar->rx_work); | |
1059 | init_usb_anchor(&ar->tx_wait); | |
1060 | init_usb_anchor(&ar->tx_anch); | |
1061 | init_usb_anchor(&ar->tx_cmd); | |
1062 | init_usb_anchor(&ar->tx_err); | |
1063 | init_completion(&ar->cmd_wait); | |
1064 | init_completion(&ar->fw_boot_wait); | |
1065 | init_completion(&ar->fw_load_wait); | |
1066 | tasklet_init(&ar->usb_tasklet, carl9170_usb_tasklet, | |
1067 | (unsigned long)ar); | |
1068 | ||
1069 | atomic_set(&ar->tx_cmd_urbs, 0); | |
1070 | atomic_set(&ar->tx_anch_urbs, 0); | |
1071 | atomic_set(&ar->rx_work_urbs, 0); | |
1072 | atomic_set(&ar->rx_anch_urbs, 0); | |
1073 | atomic_set(&ar->rx_pool_urbs, 0); | |
a84fab3c CL |
1074 | |
1075 | usb_get_dev(ar->udev); | |
1076 | ||
1077 | carl9170_set_state(ar, CARL9170_STOPPED); | |
1078 | ||
1079 | return request_firmware_nowait(THIS_MODULE, 1, CARL9170FW_NAME, | |
1080 | &ar->udev->dev, GFP_KERNEL, ar, carl9170_usb_firmware_step2); | |
1081 | } | |
1082 | ||
1083 | static void carl9170_usb_disconnect(struct usb_interface *intf) | |
1084 | { | |
1085 | struct ar9170 *ar = usb_get_intfdata(intf); | |
1086 | struct usb_device *udev; | |
1087 | ||
1088 | if (WARN_ON(!ar)) | |
1089 | return; | |
1090 | ||
1091 | udev = ar->udev; | |
1092 | wait_for_completion(&ar->fw_load_wait); | |
1093 | ||
1094 | if (IS_INITIALIZED(ar)) { | |
1095 | carl9170_reboot(ar); | |
1096 | carl9170_usb_stop(ar); | |
1097 | } | |
1098 | ||
1099 | carl9170_usb_cancel_urbs(ar); | |
1100 | carl9170_unregister(ar); | |
1101 | ||
1102 | usb_set_intfdata(intf, NULL); | |
1103 | ||
1104 | carl9170_release_firmware(ar); | |
1105 | carl9170_free(ar); | |
1106 | usb_put_dev(udev); | |
1107 | } | |
1108 | ||
1109 | #ifdef CONFIG_PM | |
1110 | static int carl9170_usb_suspend(struct usb_interface *intf, | |
1111 | pm_message_t message) | |
1112 | { | |
1113 | struct ar9170 *ar = usb_get_intfdata(intf); | |
1114 | ||
1115 | if (!ar) | |
1116 | return -ENODEV; | |
1117 | ||
1118 | carl9170_usb_cancel_urbs(ar); | |
1119 | ||
a84fab3c CL |
1120 | return 0; |
1121 | } | |
1122 | ||
1123 | static int carl9170_usb_resume(struct usb_interface *intf) | |
1124 | { | |
1125 | struct ar9170 *ar = usb_get_intfdata(intf); | |
1126 | int err; | |
1127 | ||
1128 | if (!ar) | |
1129 | return -ENODEV; | |
1130 | ||
1131 | usb_unpoison_anchored_urbs(&ar->rx_anch); | |
97e2c402 | 1132 | carl9170_set_state(ar, CARL9170_STOPPED); |
a84fab3c | 1133 | |
97e2c402 CL |
1134 | /* |
1135 | * The USB documentation demands that [for suspend] all traffic | |
1136 | * to and from the device has to stop. This would be fine, but | |
1137 | * there's a catch: the device[usb phy] does not come back. | |
1138 | * | |
1139 | * Upon resume the firmware will "kill" itself and the | |
1140 | * boot-code sorts out the magic voodoo. | |
1141 | * Not very nice, but there's not much what could go wrong. | |
1142 | */ | |
1143 | msleep(1100); | |
a84fab3c | 1144 | |
97e2c402 | 1145 | err = carl9170_usb_init_device(ar); |
a84fab3c CL |
1146 | if (err) |
1147 | goto err_unrx; | |
1148 | ||
1149 | return 0; | |
1150 | ||
1151 | err_unrx: | |
1152 | carl9170_usb_cancel_urbs(ar); | |
1153 | ||
1154 | return err; | |
1155 | } | |
1156 | #endif /* CONFIG_PM */ | |
1157 | ||
1158 | static struct usb_driver carl9170_driver = { | |
1159 | .name = KBUILD_MODNAME, | |
1160 | .probe = carl9170_usb_probe, | |
1161 | .disconnect = carl9170_usb_disconnect, | |
1162 | .id_table = carl9170_usb_ids, | |
1163 | .soft_unbind = 1, | |
1164 | #ifdef CONFIG_PM | |
1165 | .suspend = carl9170_usb_suspend, | |
1166 | .resume = carl9170_usb_resume, | |
97e2c402 | 1167 | .reset_resume = carl9170_usb_resume, |
a84fab3c | 1168 | #endif /* CONFIG_PM */ |
e1f12eb6 | 1169 | .disable_hub_initiated_lpm = 1, |
a84fab3c CL |
1170 | }; |
1171 | ||
d632eb1b | 1172 | module_usb_driver(carl9170_driver); |