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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / net / wireless / ti / wlcore / debugfs.c
blob48adb1876ab9b06943a8faf5e3a4c1411aa03460
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * This file is part of wl1271
4 *
5 * Copyright (C) 2009 Nokia Corporation
6 *
7 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
8 */
9
10 #include "debugfs.h"
11
12 #include <linux/skbuff.h>
13 #include <linux/slab.h>
14 #include <linux/module.h>
15 #include <linux/pm_runtime.h>
16
17 #include "wlcore.h"
18 #include "debug.h"
19 #include "acx.h"
20 #include "ps.h"
21 #include "io.h"
22 #include "tx.h"
23 #include "hw_ops.h"
24
25 /* ms */
26 #define WL1271_DEBUGFS_STATS_LIFETIME 1000
27
28 #define WLCORE_MAX_BLOCK_SIZE ((size_t)(4*PAGE_SIZE))
29
30 /* debugfs macros idea from mac80211 */
31 int wl1271_format_buffer(char __user *userbuf, size_t count,
32 loff_t *ppos, char *fmt, ...)
33 {
34 va_list args;
35 char buf[DEBUGFS_FORMAT_BUFFER_SIZE];
36 int res;
37
38 va_start(args, fmt);
39 res = vscnprintf(buf, sizeof(buf), fmt, args);
40 va_end(args);
41
42 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
43 }
44 EXPORT_SYMBOL_GPL(wl1271_format_buffer);
45
46 void wl1271_debugfs_update_stats(struct wl1271 *wl)
47 {
48 int ret;
49
50 mutex_lock(&wl->mutex);
51
52 if (unlikely(wl->state != WLCORE_STATE_ON))
53 goto out;
54
55 ret = pm_runtime_get_sync(wl->dev);
56 if (ret < 0) {
57 pm_runtime_put_noidle(wl->dev);
58 goto out;
59 }
60
61 if (!wl->plt &&
62 time_after(jiffies, wl->stats.fw_stats_update +
63 msecs_to_jiffies(WL1271_DEBUGFS_STATS_LIFETIME))) {
64 wl1271_acx_statistics(wl, wl->stats.fw_stats);
65 wl->stats.fw_stats_update = jiffies;
66 }
67
68 pm_runtime_mark_last_busy(wl->dev);
69 pm_runtime_put_autosuspend(wl->dev);
70
71 out:
72 mutex_unlock(&wl->mutex);
73 }
74 EXPORT_SYMBOL_GPL(wl1271_debugfs_update_stats);
75
76 DEBUGFS_READONLY_FILE(retry_count, "%u", wl->stats.retry_count);
77 DEBUGFS_READONLY_FILE(excessive_retries, "%u",
78 wl->stats.excessive_retries);
79
80 static ssize_t tx_queue_len_read(struct file *file, char __user *userbuf,
81 size_t count, loff_t *ppos)
82 {
83 struct wl1271 *wl = file->private_data;
84 u32 queue_len;
85 char buf[20];
86 int res;
87
88 queue_len = wl1271_tx_total_queue_count(wl);
89
90 res = scnprintf(buf, sizeof(buf), "%u\n", queue_len);
91 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
92 }
93
94 static const struct file_operations tx_queue_len_ops = {
95 .read = tx_queue_len_read,
96 .open = simple_open,
97 .llseek = default_llseek,
98 };
99
100 static void chip_op_handler(struct wl1271 *wl, unsigned long value,
101 void *arg)
102 {
103 int ret;
104 int (*chip_op) (struct wl1271 *wl);
105
106 if (!arg) {
107 wl1271_warning("debugfs chip_op_handler with no callback");
108 return;
109 }
110
111 ret = pm_runtime_get_sync(wl->dev);
112 if (ret < 0) {
113 pm_runtime_put_noidle(wl->dev);
114
115 return;
116 }
117
118 chip_op = arg;
119 chip_op(wl);
120
121 pm_runtime_mark_last_busy(wl->dev);
122 pm_runtime_put_autosuspend(wl->dev);
123 }
124
125
126 static inline void no_write_handler(struct wl1271 *wl,
127 unsigned long value,
128 unsigned long param)
129 {
130 }
131
132 #define WL12XX_CONF_DEBUGFS(param, conf_sub_struct, \
133 min_val, max_val, write_handler_locked, \
134 write_handler_arg) \
135 static ssize_t param##_read(struct file *file, \
136 char __user *user_buf, \
137 size_t count, loff_t *ppos) \
138 { \
139 struct wl1271 *wl = file->private_data; \
140 return wl1271_format_buffer(user_buf, count, \
141 ppos, "%d\n", \
142 wl->conf.conf_sub_struct.param); \
143 } \
144 \
145 static ssize_t param##_write(struct file *file, \
146 const char __user *user_buf, \
147 size_t count, loff_t *ppos) \
148 { \
149 struct wl1271 *wl = file->private_data; \
150 unsigned long value; \
151 int ret; \
152 \
153 ret = kstrtoul_from_user(user_buf, count, 10, &value); \
154 if (ret < 0) { \
155 wl1271_warning("illegal value for " #param); \
156 return -EINVAL; \
157 } \
158 \
159 if (value < min_val || value > max_val) { \
160 wl1271_warning(#param " is not in valid range"); \
161 return -ERANGE; \
162 } \
163 \
164 mutex_lock(&wl->mutex); \
165 wl->conf.conf_sub_struct.param = value; \
166 \
167 write_handler_locked(wl, value, write_handler_arg); \
168 \
169 mutex_unlock(&wl->mutex); \
170 return count; \
171 } \
172 \
173 static const struct file_operations param##_ops = { \
174 .read = param##_read, \
175 .write = param##_write, \
176 .open = simple_open, \
177 .llseek = default_llseek, \
178 };
179
180 WL12XX_CONF_DEBUGFS(irq_pkt_threshold, rx, 0, 65535,
181 chip_op_handler, wl1271_acx_init_rx_interrupt)
182 WL12XX_CONF_DEBUGFS(irq_blk_threshold, rx, 0, 65535,
183 chip_op_handler, wl1271_acx_init_rx_interrupt)
184 WL12XX_CONF_DEBUGFS(irq_timeout, rx, 0, 100,
185 chip_op_handler, wl1271_acx_init_rx_interrupt)
186
187 static ssize_t gpio_power_read(struct file *file, char __user *user_buf,
188 size_t count, loff_t *ppos)
189 {
190 struct wl1271 *wl = file->private_data;
191 bool state = test_bit(WL1271_FLAG_GPIO_POWER, &wl->flags);
192
193 int res;
194 char buf[10];
195
196 res = scnprintf(buf, sizeof(buf), "%d\n", state);
197
198 return simple_read_from_buffer(user_buf, count, ppos, buf, res);
199 }
200
201 static ssize_t gpio_power_write(struct file *file,
202 const char __user *user_buf,
203 size_t count, loff_t *ppos)
204 {
205 struct wl1271 *wl = file->private_data;
206 unsigned long value;
207 int ret;
208
209 ret = kstrtoul_from_user(user_buf, count, 10, &value);
210 if (ret < 0) {
211 wl1271_warning("illegal value in gpio_power");
212 return -EINVAL;
213 }
214
215 mutex_lock(&wl->mutex);
216
217 if (value)
218 wl1271_power_on(wl);
219 else
220 wl1271_power_off(wl);
221
222 mutex_unlock(&wl->mutex);
223 return count;
224 }
225
226 static const struct file_operations gpio_power_ops = {
227 .read = gpio_power_read,
228 .write = gpio_power_write,
229 .open = simple_open,
230 .llseek = default_llseek,
231 };
232
233 static ssize_t start_recovery_write(struct file *file,
234 const char __user *user_buf,
235 size_t count, loff_t *ppos)
236 {
237 struct wl1271 *wl = file->private_data;
238
239 mutex_lock(&wl->mutex);
240 wl12xx_queue_recovery_work(wl);
241 mutex_unlock(&wl->mutex);
242
243 return count;
244 }
245
246 static const struct file_operations start_recovery_ops = {
247 .write = start_recovery_write,
248 .open = simple_open,
249 .llseek = default_llseek,
250 };
251
252 static ssize_t dynamic_ps_timeout_read(struct file *file, char __user *user_buf,
253 size_t count, loff_t *ppos)
254 {
255 struct wl1271 *wl = file->private_data;
256
257 return wl1271_format_buffer(user_buf, count,
258 ppos, "%d\n",
259 wl->conf.conn.dynamic_ps_timeout);
260 }
261
262 static ssize_t dynamic_ps_timeout_write(struct file *file,
263 const char __user *user_buf,
264 size_t count, loff_t *ppos)
265 {
266 struct wl1271 *wl = file->private_data;
267 struct wl12xx_vif *wlvif;
268 unsigned long value;
269 int ret;
270
271 ret = kstrtoul_from_user(user_buf, count, 10, &value);
272 if (ret < 0) {
273 wl1271_warning("illegal value in dynamic_ps");
274 return -EINVAL;
275 }
276
277 if (value < 1 || value > 65535) {
278 wl1271_warning("dynamic_ps_timeout is not in valid range");
279 return -ERANGE;
280 }
281
282 mutex_lock(&wl->mutex);
283
284 wl->conf.conn.dynamic_ps_timeout = value;
285
286 if (unlikely(wl->state != WLCORE_STATE_ON))
287 goto out;
288
289 ret = pm_runtime_get_sync(wl->dev);
290 if (ret < 0) {
291 pm_runtime_put_noidle(wl->dev);
292 goto out;
293 }
294
295 /* In case we're already in PSM, trigger it again to set new timeout
296 * immediately without waiting for re-association
297 */
298
299 wl12xx_for_each_wlvif_sta(wl, wlvif) {
300 if (test_bit(WLVIF_FLAG_IN_PS, &wlvif->flags))
301 wl1271_ps_set_mode(wl, wlvif, STATION_AUTO_PS_MODE);
302 }
303
304 pm_runtime_mark_last_busy(wl->dev);
305 pm_runtime_put_autosuspend(wl->dev);
306
307 out:
308 mutex_unlock(&wl->mutex);
309 return count;
310 }
311
312 static const struct file_operations dynamic_ps_timeout_ops = {
313 .read = dynamic_ps_timeout_read,
314 .write = dynamic_ps_timeout_write,
315 .open = simple_open,
316 .llseek = default_llseek,
317 };
318
319 static ssize_t forced_ps_read(struct file *file, char __user *user_buf,
320 size_t count, loff_t *ppos)
321 {
322 struct wl1271 *wl = file->private_data;
323
324 return wl1271_format_buffer(user_buf, count,
325 ppos, "%d\n",
326 wl->conf.conn.forced_ps);
327 }
328
329 static ssize_t forced_ps_write(struct file *file,
330 const char __user *user_buf,
331 size_t count, loff_t *ppos)
332 {
333 struct wl1271 *wl = file->private_data;
334 struct wl12xx_vif *wlvif;
335 unsigned long value;
336 int ret, ps_mode;
337
338 ret = kstrtoul_from_user(user_buf, count, 10, &value);
339 if (ret < 0) {
340 wl1271_warning("illegal value in forced_ps");
341 return -EINVAL;
342 }
343
344 if (value != 1 && value != 0) {
345 wl1271_warning("forced_ps should be either 0 or 1");
346 return -ERANGE;
347 }
348
349 mutex_lock(&wl->mutex);
350
351 if (wl->conf.conn.forced_ps == value)
352 goto out;
353
354 wl->conf.conn.forced_ps = value;
355
356 if (unlikely(wl->state != WLCORE_STATE_ON))
357 goto out;
358
359 ret = pm_runtime_get_sync(wl->dev);
360 if (ret < 0) {
361 pm_runtime_put_noidle(wl->dev);
362 goto out;
363 }
364
365 /* In case we're already in PSM, trigger it again to switch mode
366 * immediately without waiting for re-association
367 */
368
369 ps_mode = value ? STATION_POWER_SAVE_MODE : STATION_AUTO_PS_MODE;
370
371 wl12xx_for_each_wlvif_sta(wl, wlvif) {
372 if (test_bit(WLVIF_FLAG_IN_PS, &wlvif->flags))
373 wl1271_ps_set_mode(wl, wlvif, ps_mode);
374 }
375
376 pm_runtime_mark_last_busy(wl->dev);
377 pm_runtime_put_autosuspend(wl->dev);
378
379 out:
380 mutex_unlock(&wl->mutex);
381 return count;
382 }
383
384 static const struct file_operations forced_ps_ops = {
385 .read = forced_ps_read,
386 .write = forced_ps_write,
387 .open = simple_open,
388 .llseek = default_llseek,
389 };
390
391 static ssize_t split_scan_timeout_read(struct file *file, char __user *user_buf,
392 size_t count, loff_t *ppos)
393 {
394 struct wl1271 *wl = file->private_data;
395
396 return wl1271_format_buffer(user_buf, count,
397 ppos, "%d\n",
398 wl->conf.scan.split_scan_timeout / 1000);
399 }
400
401 static ssize_t split_scan_timeout_write(struct file *file,
402 const char __user *user_buf,
403 size_t count, loff_t *ppos)
404 {
405 struct wl1271 *wl = file->private_data;
406 unsigned long value;
407 int ret;
408
409 ret = kstrtoul_from_user(user_buf, count, 10, &value);
410 if (ret < 0) {
411 wl1271_warning("illegal value in split_scan_timeout");
412 return -EINVAL;
413 }
414
415 if (value == 0)
416 wl1271_info("split scan will be disabled");
417
418 mutex_lock(&wl->mutex);
419
420 wl->conf.scan.split_scan_timeout = value * 1000;
421
422 mutex_unlock(&wl->mutex);
423 return count;
424 }
425
426 static const struct file_operations split_scan_timeout_ops = {
427 .read = split_scan_timeout_read,
428 .write = split_scan_timeout_write,
429 .open = simple_open,
430 .llseek = default_llseek,
431 };
432
433 static ssize_t driver_state_read(struct file *file, char __user *user_buf,
434 size_t count, loff_t *ppos)
435 {
436 struct wl1271 *wl = file->private_data;
437 int res = 0;
438 ssize_t ret;
439 char *buf;
440 struct wl12xx_vif *wlvif;
441
442 #define DRIVER_STATE_BUF_LEN 1024
443
444 buf = kmalloc(DRIVER_STATE_BUF_LEN, GFP_KERNEL);
445 if (!buf)
446 return -ENOMEM;
447
448 mutex_lock(&wl->mutex);
449
450 #define DRIVER_STATE_PRINT(x, fmt) \
451 (res += scnprintf(buf + res, DRIVER_STATE_BUF_LEN - res,\
452 #x " = " fmt "\n", wl->x))
453
454 #define DRIVER_STATE_PRINT_GENERIC(x, fmt, args...) \
455 (res += scnprintf(buf + res, DRIVER_STATE_BUF_LEN - res,\
456 #x " = " fmt "\n", args))
457
458 #define DRIVER_STATE_PRINT_LONG(x) DRIVER_STATE_PRINT(x, "%ld")
459 #define DRIVER_STATE_PRINT_INT(x) DRIVER_STATE_PRINT(x, "%d")
460 #define DRIVER_STATE_PRINT_STR(x) DRIVER_STATE_PRINT(x, "%s")
461 #define DRIVER_STATE_PRINT_LHEX(x) DRIVER_STATE_PRINT(x, "0x%lx")
462 #define DRIVER_STATE_PRINT_HEX(x) DRIVER_STATE_PRINT(x, "0x%x")
463
464 wl12xx_for_each_wlvif_sta(wl, wlvif) {
465 if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
466 continue;
467
468 DRIVER_STATE_PRINT_GENERIC(channel, "%d (%s)", wlvif->channel,
469 wlvif->p2p ? "P2P-CL" : "STA");
470 }
471
472 wl12xx_for_each_wlvif_ap(wl, wlvif)
473 DRIVER_STATE_PRINT_GENERIC(channel, "%d (%s)", wlvif->channel,
474 wlvif->p2p ? "P2P-GO" : "AP");
475
476 DRIVER_STATE_PRINT_INT(tx_blocks_available);
477 DRIVER_STATE_PRINT_INT(tx_allocated_blocks);
478 DRIVER_STATE_PRINT_INT(tx_allocated_pkts[0]);
479 DRIVER_STATE_PRINT_INT(tx_allocated_pkts[1]);
480 DRIVER_STATE_PRINT_INT(tx_allocated_pkts[2]);
481 DRIVER_STATE_PRINT_INT(tx_allocated_pkts[3]);
482 DRIVER_STATE_PRINT_INT(tx_frames_cnt);
483 DRIVER_STATE_PRINT_LHEX(tx_frames_map[0]);
484 DRIVER_STATE_PRINT_INT(tx_queue_count[0]);
485 DRIVER_STATE_PRINT_INT(tx_queue_count[1]);
486 DRIVER_STATE_PRINT_INT(tx_queue_count[2]);
487 DRIVER_STATE_PRINT_INT(tx_queue_count[3]);
488 DRIVER_STATE_PRINT_INT(tx_packets_count);
489 DRIVER_STATE_PRINT_INT(tx_results_count);
490 DRIVER_STATE_PRINT_LHEX(flags);
491 DRIVER_STATE_PRINT_INT(tx_blocks_freed);
492 DRIVER_STATE_PRINT_INT(rx_counter);
493 DRIVER_STATE_PRINT_INT(state);
494 DRIVER_STATE_PRINT_INT(band);
495 DRIVER_STATE_PRINT_INT(power_level);
496 DRIVER_STATE_PRINT_INT(sg_enabled);
497 DRIVER_STATE_PRINT_INT(enable_11a);
498 DRIVER_STATE_PRINT_INT(noise);
499 DRIVER_STATE_PRINT_LHEX(ap_fw_ps_map);
500 DRIVER_STATE_PRINT_LHEX(ap_ps_map);
501 DRIVER_STATE_PRINT_HEX(quirks);
502 DRIVER_STATE_PRINT_HEX(irq);
503 /* TODO: ref_clock and tcxo_clock were moved to wl12xx priv */
504 DRIVER_STATE_PRINT_HEX(hw_pg_ver);
505 DRIVER_STATE_PRINT_HEX(irq_flags);
506 DRIVER_STATE_PRINT_HEX(chip.id);
507 DRIVER_STATE_PRINT_STR(chip.fw_ver_str);
508 DRIVER_STATE_PRINT_STR(chip.phy_fw_ver_str);
509 DRIVER_STATE_PRINT_INT(recovery_count);
510
511 #undef DRIVER_STATE_PRINT_INT
512 #undef DRIVER_STATE_PRINT_LONG
513 #undef DRIVER_STATE_PRINT_HEX
514 #undef DRIVER_STATE_PRINT_LHEX
515 #undef DRIVER_STATE_PRINT_STR
516 #undef DRIVER_STATE_PRINT
517 #undef DRIVER_STATE_BUF_LEN
518
519 mutex_unlock(&wl->mutex);
520
521 ret = simple_read_from_buffer(user_buf, count, ppos, buf, res);
522 kfree(buf);
523 return ret;
524 }
525
526 static const struct file_operations driver_state_ops = {
527 .read = driver_state_read,
528 .open = simple_open,
529 .llseek = default_llseek,
530 };
531
532 static ssize_t vifs_state_read(struct file *file, char __user *user_buf,
533 size_t count, loff_t *ppos)
534 {
535 struct wl1271 *wl = file->private_data;
536 struct wl12xx_vif *wlvif;
537 int ret, res = 0;
538 const int buf_size = 4096;
539 char *buf;
540 char tmp_buf[64];
541
542 buf = kzalloc(buf_size, GFP_KERNEL);
543 if (!buf)
544 return -ENOMEM;
545
546 mutex_lock(&wl->mutex);
547
548 #define VIF_STATE_PRINT(x, fmt) \
549 (res += scnprintf(buf + res, buf_size - res, \
550 #x " = " fmt "\n", wlvif->x))
551
552 #define VIF_STATE_PRINT_LONG(x) VIF_STATE_PRINT(x, "%ld")
553 #define VIF_STATE_PRINT_INT(x) VIF_STATE_PRINT(x, "%d")
554 #define VIF_STATE_PRINT_STR(x) VIF_STATE_PRINT(x, "%s")
555 #define VIF_STATE_PRINT_LHEX(x) VIF_STATE_PRINT(x, "0x%lx")
556 #define VIF_STATE_PRINT_LLHEX(x) VIF_STATE_PRINT(x, "0x%llx")
557 #define VIF_STATE_PRINT_HEX(x) VIF_STATE_PRINT(x, "0x%x")
558
559 #define VIF_STATE_PRINT_NSTR(x, len) \
560 do { \
561 memset(tmp_buf, 0, sizeof(tmp_buf)); \
562 memcpy(tmp_buf, wlvif->x, \
563 min_t(u8, len, sizeof(tmp_buf) - 1)); \
564 res += scnprintf(buf + res, buf_size - res, \
565 #x " = %s\n", tmp_buf); \
566 } while (0)
567
568 wl12xx_for_each_wlvif(wl, wlvif) {
569 VIF_STATE_PRINT_INT(role_id);
570 VIF_STATE_PRINT_INT(bss_type);
571 VIF_STATE_PRINT_LHEX(flags);
572 VIF_STATE_PRINT_INT(p2p);
573 VIF_STATE_PRINT_INT(dev_role_id);
574 VIF_STATE_PRINT_INT(dev_hlid);
575
576 if (wlvif->bss_type == BSS_TYPE_STA_BSS ||
577 wlvif->bss_type == BSS_TYPE_IBSS) {
578 VIF_STATE_PRINT_INT(sta.hlid);
579 VIF_STATE_PRINT_INT(sta.basic_rate_idx);
580 VIF_STATE_PRINT_INT(sta.ap_rate_idx);
581 VIF_STATE_PRINT_INT(sta.p2p_rate_idx);
582 VIF_STATE_PRINT_INT(sta.qos);
583 } else {
584 VIF_STATE_PRINT_INT(ap.global_hlid);
585 VIF_STATE_PRINT_INT(ap.bcast_hlid);
586 VIF_STATE_PRINT_LHEX(ap.sta_hlid_map[0]);
587 VIF_STATE_PRINT_INT(ap.mgmt_rate_idx);
588 VIF_STATE_PRINT_INT(ap.bcast_rate_idx);
589 VIF_STATE_PRINT_INT(ap.ucast_rate_idx[0]);
590 VIF_STATE_PRINT_INT(ap.ucast_rate_idx[1]);
591 VIF_STATE_PRINT_INT(ap.ucast_rate_idx[2]);
592 VIF_STATE_PRINT_INT(ap.ucast_rate_idx[3]);
593 }
594 VIF_STATE_PRINT_INT(last_tx_hlid);
595 VIF_STATE_PRINT_INT(tx_queue_count[0]);
596 VIF_STATE_PRINT_INT(tx_queue_count[1]);
597 VIF_STATE_PRINT_INT(tx_queue_count[2]);
598 VIF_STATE_PRINT_INT(tx_queue_count[3]);
599 VIF_STATE_PRINT_LHEX(links_map[0]);
600 VIF_STATE_PRINT_NSTR(ssid, wlvif->ssid_len);
601 VIF_STATE_PRINT_INT(band);
602 VIF_STATE_PRINT_INT(channel);
603 VIF_STATE_PRINT_HEX(bitrate_masks[0]);
604 VIF_STATE_PRINT_HEX(bitrate_masks[1]);
605 VIF_STATE_PRINT_HEX(basic_rate_set);
606 VIF_STATE_PRINT_HEX(basic_rate);
607 VIF_STATE_PRINT_HEX(rate_set);
608 VIF_STATE_PRINT_INT(beacon_int);
609 VIF_STATE_PRINT_INT(default_key);
610 VIF_STATE_PRINT_INT(aid);
611 VIF_STATE_PRINT_INT(psm_entry_retry);
612 VIF_STATE_PRINT_INT(power_level);
613 VIF_STATE_PRINT_INT(rssi_thold);
614 VIF_STATE_PRINT_INT(last_rssi_event);
615 VIF_STATE_PRINT_INT(ba_support);
616 VIF_STATE_PRINT_INT(ba_allowed);
617 VIF_STATE_PRINT_LLHEX(total_freed_pkts);
618 }
619
620 #undef VIF_STATE_PRINT_INT
621 #undef VIF_STATE_PRINT_LONG
622 #undef VIF_STATE_PRINT_HEX
623 #undef VIF_STATE_PRINT_LHEX
624 #undef VIF_STATE_PRINT_LLHEX
625 #undef VIF_STATE_PRINT_STR
626 #undef VIF_STATE_PRINT_NSTR
627 #undef VIF_STATE_PRINT
628
629 mutex_unlock(&wl->mutex);
630
631 ret = simple_read_from_buffer(user_buf, count, ppos, buf, res);
632 kfree(buf);
633 return ret;
634 }
635
636 static const struct file_operations vifs_state_ops = {
637 .read = vifs_state_read,
638 .open = simple_open,
639 .llseek = default_llseek,
640 };
641
642 static ssize_t dtim_interval_read(struct file *file, char __user *user_buf,
643 size_t count, loff_t *ppos)
644 {
645 struct wl1271 *wl = file->private_data;
646 u8 value;
647
648 if (wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_DTIM ||
649 wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_N_DTIM)
650 value = wl->conf.conn.listen_interval;
651 else
652 value = 0;
653
654 return wl1271_format_buffer(user_buf, count, ppos, "%d\n", value);
655 }
656
657 static ssize_t dtim_interval_write(struct file *file,
658 const char __user *user_buf,
659 size_t count, loff_t *ppos)
660 {
661 struct wl1271 *wl = file->private_data;
662 unsigned long value;
663 int ret;
664
665 ret = kstrtoul_from_user(user_buf, count, 10, &value);
666 if (ret < 0) {
667 wl1271_warning("illegal value for dtim_interval");
668 return -EINVAL;
669 }
670
671 if (value < 1 || value > 10) {
672 wl1271_warning("dtim value is not in valid range");
673 return -ERANGE;
674 }
675
676 mutex_lock(&wl->mutex);
677
678 wl->conf.conn.listen_interval = value;
679 /* for some reason there are different event types for 1 and >1 */
680 if (value == 1)
681 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_DTIM;
682 else
683 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_N_DTIM;
684
685 /*
686 * we don't reconfigure ACX_WAKE_UP_CONDITIONS now, so it will only
687 * take effect on the next time we enter psm.
688 */
689 mutex_unlock(&wl->mutex);
690 return count;
691 }
692
693 static const struct file_operations dtim_interval_ops = {
694 .read = dtim_interval_read,
695 .write = dtim_interval_write,
696 .open = simple_open,
697 .llseek = default_llseek,
698 };
699
700
701
702 static ssize_t suspend_dtim_interval_read(struct file *file,
703 char __user *user_buf,
704 size_t count, loff_t *ppos)
705 {
706 struct wl1271 *wl = file->private_data;
707 u8 value;
708
709 if (wl->conf.conn.suspend_wake_up_event == CONF_WAKE_UP_EVENT_DTIM ||
710 wl->conf.conn.suspend_wake_up_event == CONF_WAKE_UP_EVENT_N_DTIM)
711 value = wl->conf.conn.suspend_listen_interval;
712 else
713 value = 0;
714
715 return wl1271_format_buffer(user_buf, count, ppos, "%d\n", value);
716 }
717
718 static ssize_t suspend_dtim_interval_write(struct file *file,
719 const char __user *user_buf,
720 size_t count, loff_t *ppos)
721 {
722 struct wl1271 *wl = file->private_data;
723 unsigned long value;
724 int ret;
725
726 ret = kstrtoul_from_user(user_buf, count, 10, &value);
727 if (ret < 0) {
728 wl1271_warning("illegal value for suspend_dtim_interval");
729 return -EINVAL;
730 }
731
732 if (value < 1 || value > 10) {
733 wl1271_warning("suspend_dtim value is not in valid range");
734 return -ERANGE;
735 }
736
737 mutex_lock(&wl->mutex);
738
739 wl->conf.conn.suspend_listen_interval = value;
740 /* for some reason there are different event types for 1 and >1 */
741 if (value == 1)
742 wl->conf.conn.suspend_wake_up_event = CONF_WAKE_UP_EVENT_DTIM;
743 else
744 wl->conf.conn.suspend_wake_up_event = CONF_WAKE_UP_EVENT_N_DTIM;
745
746 mutex_unlock(&wl->mutex);
747 return count;
748 }
749
750
751 static const struct file_operations suspend_dtim_interval_ops = {
752 .read = suspend_dtim_interval_read,
753 .write = suspend_dtim_interval_write,
754 .open = simple_open,
755 .llseek = default_llseek,
756 };
757
758 static ssize_t beacon_interval_read(struct file *file, char __user *user_buf,
759 size_t count, loff_t *ppos)
760 {
761 struct wl1271 *wl = file->private_data;
762 u8 value;
763
764 if (wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_BEACON ||
765 wl->conf.conn.wake_up_event == CONF_WAKE_UP_EVENT_N_BEACONS)
766 value = wl->conf.conn.listen_interval;
767 else
768 value = 0;
769
770 return wl1271_format_buffer(user_buf, count, ppos, "%d\n", value);
771 }
772
773 static ssize_t beacon_interval_write(struct file *file,
774 const char __user *user_buf,
775 size_t count, loff_t *ppos)
776 {
777 struct wl1271 *wl = file->private_data;
778 unsigned long value;
779 int ret;
780
781 ret = kstrtoul_from_user(user_buf, count, 10, &value);
782 if (ret < 0) {
783 wl1271_warning("illegal value for beacon_interval");
784 return -EINVAL;
785 }
786
787 if (value < 1 || value > 255) {
788 wl1271_warning("beacon interval value is not in valid range");
789 return -ERANGE;
790 }
791
792 mutex_lock(&wl->mutex);
793
794 wl->conf.conn.listen_interval = value;
795 /* for some reason there are different event types for 1 and >1 */
796 if (value == 1)
797 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_BEACON;
798 else
799 wl->conf.conn.wake_up_event = CONF_WAKE_UP_EVENT_N_BEACONS;
800
801 /*
802 * we don't reconfigure ACX_WAKE_UP_CONDITIONS now, so it will only
803 * take effect on the next time we enter psm.
804 */
805 mutex_unlock(&wl->mutex);
806 return count;
807 }
808
809 static const struct file_operations beacon_interval_ops = {
810 .read = beacon_interval_read,
811 .write = beacon_interval_write,
812 .open = simple_open,
813 .llseek = default_llseek,
814 };
815
816 static ssize_t rx_streaming_interval_write(struct file *file,
817 const char __user *user_buf,
818 size_t count, loff_t *ppos)
819 {
820 struct wl1271 *wl = file->private_data;
821 struct wl12xx_vif *wlvif;
822 unsigned long value;
823 int ret;
824
825 ret = kstrtoul_from_user(user_buf, count, 10, &value);
826 if (ret < 0) {
827 wl1271_warning("illegal value in rx_streaming_interval!");
828 return -EINVAL;
829 }
830
831 /* valid values: 0, 10-100 */
832 if (value && (value < 10 || value > 100)) {
833 wl1271_warning("value is not in range!");
834 return -ERANGE;
835 }
836
837 mutex_lock(&wl->mutex);
838
839 wl->conf.rx_streaming.interval = value;
840
841 ret = pm_runtime_get_sync(wl->dev);
842 if (ret < 0) {
843 pm_runtime_put_noidle(wl->dev);
844 goto out;
845 }
846
847 wl12xx_for_each_wlvif_sta(wl, wlvif) {
848 wl1271_recalc_rx_streaming(wl, wlvif);
849 }
850
851 pm_runtime_mark_last_busy(wl->dev);
852 pm_runtime_put_autosuspend(wl->dev);
853 out:
854 mutex_unlock(&wl->mutex);
855 return count;
856 }
857
858 static ssize_t rx_streaming_interval_read(struct file *file,
859 char __user *userbuf,
860 size_t count, loff_t *ppos)
861 {
862 struct wl1271 *wl = file->private_data;
863 return wl1271_format_buffer(userbuf, count, ppos,
864 "%d\n", wl->conf.rx_streaming.interval);
865 }
866
867 static const struct file_operations rx_streaming_interval_ops = {
868 .read = rx_streaming_interval_read,
869 .write = rx_streaming_interval_write,
870 .open = simple_open,
871 .llseek = default_llseek,
872 };
873
874 static ssize_t rx_streaming_always_write(struct file *file,
875 const char __user *user_buf,
876 size_t count, loff_t *ppos)
877 {
878 struct wl1271 *wl = file->private_data;
879 struct wl12xx_vif *wlvif;
880 unsigned long value;
881 int ret;
882
883 ret = kstrtoul_from_user(user_buf, count, 10, &value);
884 if (ret < 0) {
885 wl1271_warning("illegal value in rx_streaming_write!");
886 return -EINVAL;
887 }
888
889 /* valid values: 0, 10-100 */
890 if (!(value == 0 || value == 1)) {
891 wl1271_warning("value is not in valid!");
892 return -EINVAL;
893 }
894
895 mutex_lock(&wl->mutex);
896
897 wl->conf.rx_streaming.always = value;
898
899 ret = pm_runtime_get_sync(wl->dev);
900 if (ret < 0) {
901 pm_runtime_put_noidle(wl->dev);
902 goto out;
903 }
904
905 wl12xx_for_each_wlvif_sta(wl, wlvif) {
906 wl1271_recalc_rx_streaming(wl, wlvif);
907 }
908
909 pm_runtime_mark_last_busy(wl->dev);
910 pm_runtime_put_autosuspend(wl->dev);
911 out:
912 mutex_unlock(&wl->mutex);
913 return count;
914 }
915
916 static ssize_t rx_streaming_always_read(struct file *file,
917 char __user *userbuf,
918 size_t count, loff_t *ppos)
919 {
920 struct wl1271 *wl = file->private_data;
921 return wl1271_format_buffer(userbuf, count, ppos,
922 "%d\n", wl->conf.rx_streaming.always);
923 }
924
925 static const struct file_operations rx_streaming_always_ops = {
926 .read = rx_streaming_always_read,
927 .write = rx_streaming_always_write,
928 .open = simple_open,
929 .llseek = default_llseek,
930 };
931
932 static ssize_t beacon_filtering_write(struct file *file,
933 const char __user *user_buf,
934 size_t count, loff_t *ppos)
935 {
936 struct wl1271 *wl = file->private_data;
937 struct wl12xx_vif *wlvif;
938 unsigned long value;
939 int ret;
940
941 ret = kstrtoul_from_user(user_buf, count, 0, &value);
942 if (ret < 0) {
943 wl1271_warning("illegal value for beacon_filtering!");
944 return -EINVAL;
945 }
946
947 mutex_lock(&wl->mutex);
948
949 ret = pm_runtime_get_sync(wl->dev);
950 if (ret < 0) {
951 pm_runtime_put_noidle(wl->dev);
952 goto out;
953 }
954
955 wl12xx_for_each_wlvif(wl, wlvif) {
956 ret = wl1271_acx_beacon_filter_opt(wl, wlvif, !!value);
957 }
958
959 pm_runtime_mark_last_busy(wl->dev);
960 pm_runtime_put_autosuspend(wl->dev);
961 out:
962 mutex_unlock(&wl->mutex);
963 return count;
964 }
965
966 static const struct file_operations beacon_filtering_ops = {
967 .write = beacon_filtering_write,
968 .open = simple_open,
969 .llseek = default_llseek,
970 };
971
972 static ssize_t fw_stats_raw_read(struct file *file,
973 char __user *userbuf,
974 size_t count, loff_t *ppos)
975 {
976 struct wl1271 *wl = file->private_data;
977
978 wl1271_debugfs_update_stats(wl);
979
980 return simple_read_from_buffer(userbuf, count, ppos,
981 wl->stats.fw_stats,
982 wl->stats.fw_stats_len);
983 }
984
985 static const struct file_operations fw_stats_raw_ops = {
986 .read = fw_stats_raw_read,
987 .open = simple_open,
988 .llseek = default_llseek,
989 };
990
991 static ssize_t sleep_auth_read(struct file *file, char __user *user_buf,
992 size_t count, loff_t *ppos)
993 {
994 struct wl1271 *wl = file->private_data;
995
996 return wl1271_format_buffer(user_buf, count,
997 ppos, "%d\n",
998 wl->sleep_auth);
999 }
1000
1001 static ssize_t sleep_auth_write(struct file *file,
1002 const char __user *user_buf,
1003 size_t count, loff_t *ppos)
1004 {
1005 struct wl1271 *wl = file->private_data;
1006 unsigned long value;
1007 int ret;
1008
1009 ret = kstrtoul_from_user(user_buf, count, 0, &value);
1010 if (ret < 0) {
1011 wl1271_warning("illegal value in sleep_auth");
1012 return -EINVAL;
1013 }
1014
1015 if (value > WL1271_PSM_MAX) {
1016 wl1271_warning("sleep_auth must be between 0 and %d",
1017 WL1271_PSM_MAX);
1018 return -ERANGE;
1019 }
1020
1021 mutex_lock(&wl->mutex);
1022
1023 wl->conf.conn.sta_sleep_auth = value;
1024
1025 if (unlikely(wl->state != WLCORE_STATE_ON)) {
1026 /* this will show up on "read" in case we are off */
1027 wl->sleep_auth = value;
1028 goto out;
1029 }
1030
1031 ret = pm_runtime_get_sync(wl->dev);
1032 if (ret < 0) {
1033 pm_runtime_put_noidle(wl->dev);
1034 goto out;
1035 }
1036
1037 ret = wl1271_acx_sleep_auth(wl, value);
1038 if (ret < 0)
1039 goto out_sleep;
1040
1041 out_sleep:
1042 pm_runtime_mark_last_busy(wl->dev);
1043 pm_runtime_put_autosuspend(wl->dev);
1044 out:
1045 mutex_unlock(&wl->mutex);
1046 return count;
1047 }
1048
1049 static const struct file_operations sleep_auth_ops = {
1050 .read = sleep_auth_read,
1051 .write = sleep_auth_write,
1052 .open = simple_open,
1053 .llseek = default_llseek,
1054 };
1055
1056 static ssize_t dev_mem_read(struct file *file,
1057 char __user *user_buf, size_t count,
1058 loff_t *ppos)
1059 {
1060 struct wl1271 *wl = file->private_data;
1061 struct wlcore_partition_set part, old_part;
1062 size_t bytes = count;
1063 int ret;
1064 char *buf;
1065
1066 /* only requests of dword-aligned size and offset are supported */
1067 if (bytes % 4)
1068 return -EINVAL;
1069
1070 if (*ppos % 4)
1071 return -EINVAL;
1072
1073 /* function should return in reasonable time */
1074 bytes = min(bytes, WLCORE_MAX_BLOCK_SIZE);
1075
1076 if (bytes == 0)
1077 return -EINVAL;
1078
1079 memset(&part, 0, sizeof(part));
1080 part.mem.start = *ppos;
1081 part.mem.size = bytes;
1082
1083 buf = kmalloc(bytes, GFP_KERNEL);
1084 if (!buf)
1085 return -ENOMEM;
1086
1087 mutex_lock(&wl->mutex);
1088
1089 if (unlikely(wl->state == WLCORE_STATE_OFF)) {
1090 ret = -EFAULT;
1091 goto skip_read;
1092 }
1093
1094 /*
1095 * Don't fail if elp_wakeup returns an error, so the device's memory
1096 * could be read even if the FW crashed
1097 */
1098 pm_runtime_get_sync(wl->dev);
1099
1100 /* store current partition and switch partition */
1101 memcpy(&old_part, &wl->curr_part, sizeof(old_part));
1102 ret = wlcore_set_partition(wl, &part);
1103 if (ret < 0)
1104 goto part_err;
1105
1106 ret = wlcore_raw_read(wl, 0, buf, bytes, false);
1107 if (ret < 0)
1108 goto read_err;
1109
1110 read_err:
1111 /* recover partition */
1112 ret = wlcore_set_partition(wl, &old_part);
1113 if (ret < 0)
1114 goto part_err;
1115
1116 part_err:
1117 pm_runtime_mark_last_busy(wl->dev);
1118 pm_runtime_put_autosuspend(wl->dev);
1119
1120 skip_read:
1121 mutex_unlock(&wl->mutex);
1122
1123 if (ret == 0) {
1124 ret = copy_to_user(user_buf, buf, bytes);
1125 if (ret < bytes) {
1126 bytes -= ret;
1127 *ppos += bytes;
1128 ret = 0;
1129 } else {
1130 ret = -EFAULT;
1131 }
1132 }
1133
1134 kfree(buf);
1135
1136 return ((ret == 0) ? bytes : ret);
1137 }
1138
1139 static ssize_t dev_mem_write(struct file *file, const char __user *user_buf,
1140 size_t count, loff_t *ppos)
1141 {
1142 struct wl1271 *wl = file->private_data;
1143 struct wlcore_partition_set part, old_part;
1144 size_t bytes = count;
1145 int ret;
1146 char *buf;
1147
1148 /* only requests of dword-aligned size and offset are supported */
1149 if (bytes % 4)
1150 return -EINVAL;
1151
1152 if (*ppos % 4)
1153 return -EINVAL;
1154
1155 /* function should return in reasonable time */
1156 bytes = min(bytes, WLCORE_MAX_BLOCK_SIZE);
1157
1158 if (bytes == 0)
1159 return -EINVAL;
1160
1161 memset(&part, 0, sizeof(part));
1162 part.mem.start = *ppos;
1163 part.mem.size = bytes;
1164
1165 buf = memdup_user(user_buf, bytes);
1166 if (IS_ERR(buf))
1167 return PTR_ERR(buf);
1168
1169 mutex_lock(&wl->mutex);
1170
1171 if (unlikely(wl->state == WLCORE_STATE_OFF)) {
1172 ret = -EFAULT;
1173 goto skip_write;
1174 }
1175
1176 /*
1177 * Don't fail if elp_wakeup returns an error, so the device's memory
1178 * could be read even if the FW crashed
1179 */
1180 pm_runtime_get_sync(wl->dev);
1181
1182 /* store current partition and switch partition */
1183 memcpy(&old_part, &wl->curr_part, sizeof(old_part));
1184 ret = wlcore_set_partition(wl, &part);
1185 if (ret < 0)
1186 goto part_err;
1187
1188 ret = wlcore_raw_write(wl, 0, buf, bytes, false);
1189 if (ret < 0)
1190 goto write_err;
1191
1192 write_err:
1193 /* recover partition */
1194 ret = wlcore_set_partition(wl, &old_part);
1195 if (ret < 0)
1196 goto part_err;
1197
1198 part_err:
1199 pm_runtime_mark_last_busy(wl->dev);
1200 pm_runtime_put_autosuspend(wl->dev);
1201
1202 skip_write:
1203 mutex_unlock(&wl->mutex);
1204
1205 if (ret == 0)
1206 *ppos += bytes;
1207
1208 kfree(buf);
1209
1210 return ((ret == 0) ? bytes : ret);
1211 }
1212
1213 static loff_t dev_mem_seek(struct file *file, loff_t offset, int orig)
1214 {
1215 /* only requests of dword-aligned size and offset are supported */
1216 if (offset % 4)
1217 return -EINVAL;
1218
1219 return no_seek_end_llseek(file, offset, orig);
1220 }
1221
1222 static const struct file_operations dev_mem_ops = {
1223 .open = simple_open,
1224 .read = dev_mem_read,
1225 .write = dev_mem_write,
1226 .llseek = dev_mem_seek,
1227 };
1228
1229 static ssize_t fw_logger_read(struct file *file, char __user *user_buf,
1230 size_t count, loff_t *ppos)
1231 {
1232 struct wl1271 *wl = file->private_data;
1233
1234 return wl1271_format_buffer(user_buf, count,
1235 ppos, "%d\n",
1236 wl->conf.fwlog.output);
1237 }
1238
1239 static ssize_t fw_logger_write(struct file *file,
1240 const char __user *user_buf,
1241 size_t count, loff_t *ppos)
1242 {
1243 struct wl1271 *wl = file->private_data;
1244 unsigned long value;
1245 int ret;
1246
1247 ret = kstrtoul_from_user(user_buf, count, 0, &value);
1248 if (ret < 0) {
1249 wl1271_warning("illegal value in fw_logger");
1250 return -EINVAL;
1251 }
1252
1253 if ((value > 2) || (value == 0)) {
1254 wl1271_warning("fw_logger value must be 1-UART 2-SDIO");
1255 return -ERANGE;
1256 }
1257
1258 if (wl->conf.fwlog.output == 0) {
1259 wl1271_warning("invalid operation - fw logger disabled by default, please change mode via wlconf");
1260 return -EINVAL;
1261 }
1262
1263 mutex_lock(&wl->mutex);
1264 ret = pm_runtime_get_sync(wl->dev);
1265 if (ret < 0) {
1266 pm_runtime_put_noidle(wl->dev);
1267 count = ret;
1268 goto out;
1269 }
1270
1271 wl->conf.fwlog.output = value;
1272
1273 ret = wl12xx_cmd_config_fwlog(wl);
1274
1275 pm_runtime_mark_last_busy(wl->dev);
1276 pm_runtime_put_autosuspend(wl->dev);
1277
1278 out:
1279 mutex_unlock(&wl->mutex);
1280 return count;
1281 }
1282
1283 static const struct file_operations fw_logger_ops = {
1284 .open = simple_open,
1285 .read = fw_logger_read,
1286 .write = fw_logger_write,
1287 .llseek = default_llseek,
1288 };
1289
1290 static void wl1271_debugfs_add_files(struct wl1271 *wl,
1291 struct dentry *rootdir)
1292 {
1293 struct dentry *streaming;
1294
1295 DEBUGFS_ADD(tx_queue_len, rootdir);
1296 DEBUGFS_ADD(retry_count, rootdir);
1297 DEBUGFS_ADD(excessive_retries, rootdir);
1298
1299 DEBUGFS_ADD(gpio_power, rootdir);
1300 DEBUGFS_ADD(start_recovery, rootdir);
1301 DEBUGFS_ADD(driver_state, rootdir);
1302 DEBUGFS_ADD(vifs_state, rootdir);
1303 DEBUGFS_ADD(dtim_interval, rootdir);
1304 DEBUGFS_ADD(suspend_dtim_interval, rootdir);
1305 DEBUGFS_ADD(beacon_interval, rootdir);
1306 DEBUGFS_ADD(beacon_filtering, rootdir);
1307 DEBUGFS_ADD(dynamic_ps_timeout, rootdir);
1308 DEBUGFS_ADD(forced_ps, rootdir);
1309 DEBUGFS_ADD(split_scan_timeout, rootdir);
1310 DEBUGFS_ADD(irq_pkt_threshold, rootdir);
1311 DEBUGFS_ADD(irq_blk_threshold, rootdir);
1312 DEBUGFS_ADD(irq_timeout, rootdir);
1313 DEBUGFS_ADD(fw_stats_raw, rootdir);
1314 DEBUGFS_ADD(sleep_auth, rootdir);
1315 DEBUGFS_ADD(fw_logger, rootdir);
1316
1317 streaming = debugfs_create_dir("rx_streaming", rootdir);
1318
1319 DEBUGFS_ADD_PREFIX(rx_streaming, interval, streaming);
1320 DEBUGFS_ADD_PREFIX(rx_streaming, always, streaming);
1321
1322 DEBUGFS_ADD_PREFIX(dev, mem, rootdir);
1323 }
1324
1325 void wl1271_debugfs_reset(struct wl1271 *wl)
1326 {
1327 if (!wl->stats.fw_stats)
1328 return;
1329
1330 memset(wl->stats.fw_stats, 0, wl->stats.fw_stats_len);
1331 wl->stats.retry_count = 0;
1332 wl->stats.excessive_retries = 0;
1333 }
1334
1335 int wl1271_debugfs_init(struct wl1271 *wl)
1336 {
1337 int ret;
1338 struct dentry *rootdir;
1339
1340 rootdir = debugfs_create_dir(KBUILD_MODNAME,
1341 wl->hw->wiphy->debugfsdir);
1342
1343 wl->stats.fw_stats = kzalloc(wl->stats.fw_stats_len, GFP_KERNEL);
1344 if (!wl->stats.fw_stats) {
1345 ret = -ENOMEM;
1346 goto out_remove;
1347 }
1348
1349 wl->stats.fw_stats_update = jiffies;
1350
1351 wl1271_debugfs_add_files(wl, rootdir);
1352
1353 ret = wlcore_debugfs_init(wl, rootdir);
1354 if (ret < 0)
1355 goto out_exit;
1356
1357 goto out;
1358
1359 out_exit:
1360 wl1271_debugfs_exit(wl);
1361
1362 out_remove:
1363 debugfs_remove_recursive(rootdir);
1364
1365 out:
1366 return ret;
1367 }
1368
1369 void wl1271_debugfs_exit(struct wl1271 *wl)
1370 {
1371 kfree(wl->stats.fw_stats);
1372 wl->stats.fw_stats = NULL;
1373 }
Linux with added FPC-III support