Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2/******************************************************************************
3 *
4 * Copyright(c) 2009-2012 Realtek Corporation.
5 *
6 * Contact Information:
7 * wlanfae <wlanfae@realtek.com>
8 * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
9 * Hsinchu 300, Taiwan.
10 *
11 * Larry Finger <Larry.Finger@lwfinger.net>
12 *****************************************************************************/
13
14#include "wifi.h"
15#include "cam.h"
16
17#include <linux/moduleparam.h>
18#include <linux/vmalloc.h>
19
20#ifdef CONFIG_RTLWIFI_DEBUG_ST
21void _rtl_dbg_trace(struct rtl_priv *rtlpriv, u64 comp, int level,
22 const char *fmt, ...)
23{
24 if (unlikely((comp & rtlpriv->cfg->mod_params->debug_mask) &&
25 level <= rtlpriv->cfg->mod_params->debug_level)) {
26 struct va_format vaf;
27 va_list args;
28
29 va_start(args, fmt);
30
31 vaf.fmt = fmt;
32 vaf.va = &args;
33
34 pr_info(":<%lx> %pV", in_interrupt(), &vaf);
35
36 va_end(args);
37 }
38}
39
40void _rtl_dbg_print(struct rtl_priv *rtlpriv, u64 comp, int level,
41 const char *fmt, ...)
42{
43 if (unlikely((comp & rtlpriv->cfg->mod_params->debug_mask) &&
44 level <= rtlpriv->cfg->mod_params->debug_level)) {
45 struct va_format vaf;
46 va_list args;
47
48 va_start(args, fmt);
49
50 vaf.fmt = fmt;
51 vaf.va = &args;
52
53 pr_info("%pV", &vaf);
54
55 va_end(args);
56 }
57}
58
59void _rtl_dbg_print_data(struct rtl_priv *rtlpriv, u64 comp, int level,
60 const char *titlestring,
61 const void *hexdata, int hexdatalen)
62{
63 if (unlikely(((comp) & rtlpriv->cfg->mod_params->debug_mask) &&
64 ((level) <= rtlpriv->cfg->mod_params->debug_level))) {
65 pr_info("In process \"%s\" (pid %i): %s\n",
66 current->comm, current->pid, titlestring);
67 print_hex_dump_bytes("", DUMP_PREFIX_NONE,
68 hexdata, hexdatalen);
69 }
70}
71
72struct rtl_debugfs_priv {
73 struct rtl_priv *rtlpriv;
74 int (*cb_read)(struct seq_file *m, void *v);
75 ssize_t (*cb_write)(struct file *filp, const char __user *buffer,
76 size_t count, loff_t *loff);
77 u32 cb_data;
78};
79
80static struct dentry *debugfs_topdir;
81
82static int rtl_debug_get_common(struct seq_file *m, void *v)
83{
84 struct rtl_debugfs_priv *debugfs_priv = m->private;
85
86 return debugfs_priv->cb_read(m, v);
87}
88
89static int dl_debug_open_common(struct inode *inode, struct file *file)
90{
91 return single_open(file, rtl_debug_get_common, inode->i_private);
92}
93
94static const struct file_operations file_ops_common = {
95 .open = dl_debug_open_common,
96 .read = seq_read,
97 .llseek = seq_lseek,
98 .release = single_release,
99};
100
101static int rtl_debug_get_mac_page(struct seq_file *m, void *v)
102{
103 struct rtl_debugfs_priv *debugfs_priv = m->private;
104 struct rtl_priv *rtlpriv = debugfs_priv->rtlpriv;
105 u32 page = debugfs_priv->cb_data;
106 int i, n;
107 int max = 0xff;
108
109 for (n = 0; n <= max; ) {
110 seq_printf(m, "\n%8.8x ", n + page);
111 for (i = 0; i < 4 && n <= max; i++, n += 4)
112 seq_printf(m, "%8.8x ",
113 rtl_read_dword(rtlpriv, (page | n)));
114 }
115 seq_puts(m, "\n");
116 return 0;
117}
118
119#define RTL_DEBUG_IMPL_MAC_SERIES(page, addr) \
120static struct rtl_debugfs_priv rtl_debug_priv_mac_ ##page = { \
121 .cb_read = rtl_debug_get_mac_page, \
122 .cb_data = addr, \
123}
124
125RTL_DEBUG_IMPL_MAC_SERIES(0, 0x0000);
126RTL_DEBUG_IMPL_MAC_SERIES(1, 0x0100);
127RTL_DEBUG_IMPL_MAC_SERIES(2, 0x0200);
128RTL_DEBUG_IMPL_MAC_SERIES(3, 0x0300);
129RTL_DEBUG_IMPL_MAC_SERIES(4, 0x0400);
130RTL_DEBUG_IMPL_MAC_SERIES(5, 0x0500);
131RTL_DEBUG_IMPL_MAC_SERIES(6, 0x0600);
132RTL_DEBUG_IMPL_MAC_SERIES(7, 0x0700);
133RTL_DEBUG_IMPL_MAC_SERIES(10, 0x1000);
134RTL_DEBUG_IMPL_MAC_SERIES(11, 0x1100);
135RTL_DEBUG_IMPL_MAC_SERIES(12, 0x1200);
136RTL_DEBUG_IMPL_MAC_SERIES(13, 0x1300);
137RTL_DEBUG_IMPL_MAC_SERIES(14, 0x1400);
138RTL_DEBUG_IMPL_MAC_SERIES(15, 0x1500);
139RTL_DEBUG_IMPL_MAC_SERIES(16, 0x1600);
140RTL_DEBUG_IMPL_MAC_SERIES(17, 0x1700);
141
142static int rtl_debug_get_bb_page(struct seq_file *m, void *v)
143{
144 struct rtl_debugfs_priv *debugfs_priv = m->private;
145 struct rtl_priv *rtlpriv = debugfs_priv->rtlpriv;
146 struct ieee80211_hw *hw = rtlpriv->hw;
147 u32 page = debugfs_priv->cb_data;
148 int i, n;
149 int max = 0xff;
150
151 for (n = 0; n <= max; ) {
152 seq_printf(m, "\n%8.8x ", n + page);
153 for (i = 0; i < 4 && n <= max; i++, n += 4)
154 seq_printf(m, "%8.8x ",
155 rtl_get_bbreg(hw, (page | n), 0xffffffff));
156 }
157 seq_puts(m, "\n");
158 return 0;
159}
160
161#define RTL_DEBUG_IMPL_BB_SERIES(page, addr) \
162static struct rtl_debugfs_priv rtl_debug_priv_bb_ ##page = { \
163 .cb_read = rtl_debug_get_bb_page, \
164 .cb_data = addr, \
165}
166
167RTL_DEBUG_IMPL_BB_SERIES(8, 0x0800);
168RTL_DEBUG_IMPL_BB_SERIES(9, 0x0900);
169RTL_DEBUG_IMPL_BB_SERIES(a, 0x0a00);
170RTL_DEBUG_IMPL_BB_SERIES(b, 0x0b00);
171RTL_DEBUG_IMPL_BB_SERIES(c, 0x0c00);
172RTL_DEBUG_IMPL_BB_SERIES(d, 0x0d00);
173RTL_DEBUG_IMPL_BB_SERIES(e, 0x0e00);
174RTL_DEBUG_IMPL_BB_SERIES(f, 0x0f00);
175RTL_DEBUG_IMPL_BB_SERIES(18, 0x1800);
176RTL_DEBUG_IMPL_BB_SERIES(19, 0x1900);
177RTL_DEBUG_IMPL_BB_SERIES(1a, 0x1a00);
178RTL_DEBUG_IMPL_BB_SERIES(1b, 0x1b00);
179RTL_DEBUG_IMPL_BB_SERIES(1c, 0x1c00);
180RTL_DEBUG_IMPL_BB_SERIES(1d, 0x1d00);
181RTL_DEBUG_IMPL_BB_SERIES(1e, 0x1e00);
182RTL_DEBUG_IMPL_BB_SERIES(1f, 0x1f00);
183
184static int rtl_debug_get_reg_rf(struct seq_file *m, void *v)
185{
186 struct rtl_debugfs_priv *debugfs_priv = m->private;
187 struct rtl_priv *rtlpriv = debugfs_priv->rtlpriv;
188 struct ieee80211_hw *hw = rtlpriv->hw;
189 enum radio_path rfpath = debugfs_priv->cb_data;
190 int i, n;
191 int max = 0x40;
192
193 if (IS_HARDWARE_TYPE_8822B(rtlpriv))
194 max = 0xff;
195
196 seq_printf(m, "\nPATH(%d)", rfpath);
197
198 for (n = 0; n <= max; ) {
199 seq_printf(m, "\n%8.8x ", n);
200 for (i = 0; i < 4 && n <= max; n += 1, i++)
201 seq_printf(m, "%8.8x ",
202 rtl_get_rfreg(hw, rfpath, n, 0xffffffff));
203 }
204 seq_puts(m, "\n");
205 return 0;
206}
207
208#define RTL_DEBUG_IMPL_RF_SERIES(page, addr) \
209static struct rtl_debugfs_priv rtl_debug_priv_rf_ ##page = { \
210 .cb_read = rtl_debug_get_reg_rf, \
211 .cb_data = addr, \
212}
213
214RTL_DEBUG_IMPL_RF_SERIES(a, RF90_PATH_A);
215RTL_DEBUG_IMPL_RF_SERIES(b, RF90_PATH_B);
216
217static int rtl_debug_get_cam_register(struct seq_file *m, void *v)
218{
219 struct rtl_debugfs_priv *debugfs_priv = m->private;
220 struct rtl_priv *rtlpriv = debugfs_priv->rtlpriv;
221 int start = debugfs_priv->cb_data;
222 u32 target_cmd = 0;
223 u32 target_val = 0;
224 u8 entry_i = 0;
225 u32 ulstatus;
226 int i = 100, j = 0;
227 int end = (start + 11 > TOTAL_CAM_ENTRY ? TOTAL_CAM_ENTRY : start + 11);
228
229 /* This dump the current register page */
230 seq_printf(m,
231 "\n#################### SECURITY CAM (%d-%d) ##################\n",
232 start, end - 1);
233
234 for (j = start; j < end; j++) {
235 seq_printf(m, "\nD: %2x > ", j);
236 for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
237 /* polling bit, and No Write enable, and address */
238 target_cmd = entry_i + CAM_CONTENT_COUNT * j;
239 target_cmd = target_cmd | BIT(31);
240
241 /* Check polling bit is clear */
242 while ((i--) >= 0) {
243 ulstatus = rtl_read_dword(
244 rtlpriv,
245 rtlpriv->cfg->maps[RWCAM]);
246 if (ulstatus & BIT(31))
247 continue;
248 else
249 break;
250 }
251
252 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
253 target_cmd);
254 target_val = rtl_read_dword(rtlpriv,
255 rtlpriv->cfg->maps[RCAMO]);
256 seq_printf(m, "%8.8x ", target_val);
257 }
258 }
259 seq_puts(m, "\n");
260 return 0;
261}
262
263#define RTL_DEBUG_IMPL_CAM_SERIES(page, addr) \
264static struct rtl_debugfs_priv rtl_debug_priv_cam_ ##page = { \
265 .cb_read = rtl_debug_get_cam_register, \
266 .cb_data = addr, \
267}
268
269RTL_DEBUG_IMPL_CAM_SERIES(1, 0);
270RTL_DEBUG_IMPL_CAM_SERIES(2, 11);
271RTL_DEBUG_IMPL_CAM_SERIES(3, 22);
272
273static int rtl_debug_get_btcoex(struct seq_file *m, void *v)
274{
275 struct rtl_debugfs_priv *debugfs_priv = m->private;
276 struct rtl_priv *rtlpriv = debugfs_priv->rtlpriv;
277
278 if (rtlpriv->cfg->ops->get_btc_status())
279 rtlpriv->btcoexist.btc_ops->btc_display_bt_coex_info(rtlpriv,
280 m);
281
282 seq_puts(m, "\n");
283
284 return 0;
285}
286
287static struct rtl_debugfs_priv rtl_debug_priv_btcoex = {
288 .cb_read = rtl_debug_get_btcoex,
289 .cb_data = 0,
290};
291
292static ssize_t rtl_debugfs_set_write_reg(struct file *filp,
293 const char __user *buffer,
294 size_t count, loff_t *loff)
295{
296 struct rtl_debugfs_priv *debugfs_priv = filp->private_data;
297 struct rtl_priv *rtlpriv = debugfs_priv->rtlpriv;
298 char tmp[32 + 1];
299 int tmp_len;
300 u32 addr, val, len;
301 int num;
302
303 if (count < 3)
304 return -EFAULT;
305
306 tmp_len = (count > sizeof(tmp) - 1 ? sizeof(tmp) - 1 : count);
307
308 if (!buffer || copy_from_user(tmp, buffer, tmp_len))
309 return count;
310
311 tmp[tmp_len] = '\0';
312
313 /* write BB/MAC register */
314 num = sscanf(tmp, "%x %x %x", &addr, &val, &len);
315
316 if (num != 3)
317 return count;
318
319 switch (len) {
320 case 1:
321 rtl_write_byte(rtlpriv, addr, (u8)val);
322 break;
323 case 2:
324 rtl_write_word(rtlpriv, addr, (u16)val);
325 break;
326 case 4:
327 rtl_write_dword(rtlpriv, addr, val);
328 break;
329 default:
330 /*printk("error write length=%d", len);*/
331 break;
332 }
333
334 return count;
335}
336
337static struct rtl_debugfs_priv rtl_debug_priv_write_reg = {
338 .cb_write = rtl_debugfs_set_write_reg,
339};
340
341static ssize_t rtl_debugfs_set_write_h2c(struct file *filp,
342 const char __user *buffer,
343 size_t count, loff_t *loff)
344{
345 struct rtl_debugfs_priv *debugfs_priv = filp->private_data;
346 struct rtl_priv *rtlpriv = debugfs_priv->rtlpriv;
347 struct ieee80211_hw *hw = rtlpriv->hw;
348 char tmp[32 + 1];
349 int tmp_len;
350 u8 h2c_len, h2c_data_packed[8];
351 int h2c_data[8]; /* idx 0: cmd */
352 int i;
353
354 if (count < 3)
355 return -EFAULT;
356
357 tmp_len = (count > sizeof(tmp) - 1 ? sizeof(tmp) - 1 : count);
358
359 if (!buffer || copy_from_user(tmp, buffer, tmp_len))
360 return count;
361
362 tmp[tmp_len] = '\0';
363
364 h2c_len = sscanf(tmp, "%X %X %X %X %X %X %X %X",
365 &h2c_data[0], &h2c_data[1],
366 &h2c_data[2], &h2c_data[3],
367 &h2c_data[4], &h2c_data[5],
368 &h2c_data[6], &h2c_data[7]);
369
370 if (h2c_len <= 0)
371 return count;
372
373 for (i = 0; i < h2c_len; i++)
374 h2c_data_packed[i] = (u8)h2c_data[i];
375
376 rtlpriv->cfg->ops->fill_h2c_cmd(hw, h2c_data_packed[0],
377 h2c_len - 1,
378 &h2c_data_packed[1]);
379
380 return count;
381}
382
383static struct rtl_debugfs_priv rtl_debug_priv_write_h2c = {
384 .cb_write = rtl_debugfs_set_write_h2c,
385};
386
387static ssize_t rtl_debugfs_set_write_rfreg(struct file *filp,
388 const char __user *buffer,
389 size_t count, loff_t *loff)
390{
391 struct rtl_debugfs_priv *debugfs_priv = filp->private_data;
392 struct rtl_priv *rtlpriv = debugfs_priv->rtlpriv;
393 struct ieee80211_hw *hw = rtlpriv->hw;
394 char tmp[32 + 1];
395 int tmp_len;
396 int num;
397 int path;
398 u32 addr, bitmask, data;
399
400 if (count < 3)
401 return -EFAULT;
402
403 tmp_len = (count > sizeof(tmp) - 1 ? sizeof(tmp) - 1 : count);
404
405 if (!buffer || copy_from_user(tmp, buffer, tmp_len))
406 return count;
407
408 tmp[tmp_len] = '\0';
409
410 num = sscanf(tmp, "%X %X %X %X",
411 &path, &addr, &bitmask, &data);
412
413 if (num != 4) {
414 RT_TRACE(rtlpriv, COMP_ERR, DBG_DMESG,
415 "Format is <path> <addr> <mask> <data>\n");
416 return count;
417 }
418
419 rtl_set_rfreg(hw, path, addr, bitmask, data);
420
421 return count;
422}
423
424static struct rtl_debugfs_priv rtl_debug_priv_write_rfreg = {
425 .cb_write = rtl_debugfs_set_write_rfreg,
426};
427
428static int rtl_debugfs_close(struct inode *inode, struct file *filp)
429{
430 return 0;
431}
432
433static ssize_t rtl_debugfs_common_write(struct file *filp,
434 const char __user *buffer,
435 size_t count, loff_t *loff)
436{
437 struct rtl_debugfs_priv *debugfs_priv = filp->private_data;
438
439 return debugfs_priv->cb_write(filp, buffer, count, loff);
440}
441
442static const struct file_operations file_ops_common_write = {
443 .owner = THIS_MODULE,
444 .write = rtl_debugfs_common_write,
445 .open = simple_open,
446 .release = rtl_debugfs_close,
447};
448
449static ssize_t rtl_debugfs_phydm_cmd(struct file *filp,
450 const char __user *buffer,
451 size_t count, loff_t *loff)
452{
453 struct rtl_debugfs_priv *debugfs_priv = filp->private_data;
454 struct rtl_priv *rtlpriv = debugfs_priv->rtlpriv;
455
456 char tmp[64];
457
458 if (!rtlpriv->dbg.msg_buf)
459 return -ENOMEM;
460
461 if (!rtlpriv->phydm.ops)
462 return -EFAULT;
463
464 if (buffer && !copy_from_user(tmp, buffer, sizeof(tmp))) {
465 tmp[count] = '\0';
466
467 rtlpriv->phydm.ops->phydm_debug_cmd(rtlpriv, tmp, count,
468 rtlpriv->dbg.msg_buf,
469 80 * 25);
470 }
471
472 return count;
473}
474
475static int rtl_debug_get_phydm_cmd(struct seq_file *m, void *v)
476{
477 struct rtl_debugfs_priv *debugfs_priv = m->private;
478 struct rtl_priv *rtlpriv = debugfs_priv->rtlpriv;
479
480 if (rtlpriv->dbg.msg_buf)
481 seq_puts(m, rtlpriv->dbg.msg_buf);
482
483 return 0;
484}
485
486static int rtl_debugfs_open_rw(struct inode *inode, struct file *filp)
487{
488 int ret = 0;
489
490 if (filp->f_mode & FMODE_READ)
491 ret = single_open(filp, rtl_debug_get_common, inode->i_private);
492 else
493 filp->private_data = inode->i_private;
494
495 return ret;
496}
497
498static int rtl_debugfs_close_rw(struct inode *inode, struct file *filp)
499{
500 if (filp->f_mode == FMODE_READ)
501 single_release(inode, filp);
502
503 return 0;
504}
505
506static struct rtl_debugfs_priv rtl_debug_priv_phydm_cmd = {
507 .cb_read = rtl_debug_get_phydm_cmd,
508 .cb_write = rtl_debugfs_phydm_cmd,
509 .cb_data = 0,
510};
511
512static const struct file_operations file_ops_common_rw = {
513 .owner = THIS_MODULE,
514 .open = rtl_debugfs_open_rw,
515 .release = rtl_debugfs_close_rw,
516 .read = seq_read,
517 .llseek = seq_lseek,
518 .write = rtl_debugfs_common_write,
519};
520
521#define RTL_DEBUGFS_ADD_CORE(name, mode, fopname) \
522 do { \
523 rtl_debug_priv_ ##name.rtlpriv = rtlpriv; \
524 debugfs_create_file(#name, mode, parent, \
525 &rtl_debug_priv_ ##name, \
526 &file_ops_ ##fopname); \
527 } while (0)
528
529#define RTL_DEBUGFS_ADD(name) \
530 RTL_DEBUGFS_ADD_CORE(name, S_IFREG | 0444, common)
531#define RTL_DEBUGFS_ADD_W(name) \
532 RTL_DEBUGFS_ADD_CORE(name, S_IFREG | 0222, common_write)
533#define RTL_DEBUGFS_ADD_RW(name) \
534 RTL_DEBUGFS_ADD_CORE(name, S_IFREG | 0666, common_rw)
535
536void rtl_debug_add_one(struct ieee80211_hw *hw)
537{
538 struct rtl_priv *rtlpriv = rtl_priv(hw);
539 struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
540 struct dentry *parent;
541
542 rtlpriv->dbg.msg_buf = vzalloc(80 * 25);
543
544 snprintf(rtlpriv->dbg.debugfs_name, 18, "%pMF", rtlefuse->dev_addr);
545
546 rtlpriv->dbg.debugfs_dir =
547 debugfs_create_dir(rtlpriv->dbg.debugfs_name, debugfs_topdir);
548 if (!rtlpriv->dbg.debugfs_dir) {
549 pr_err("Unable to init debugfs:/%s/%s\n", rtlpriv->cfg->name,
550 rtlpriv->dbg.debugfs_name);
551 return;
552 }
553
554 parent = rtlpriv->dbg.debugfs_dir;
555
556 RTL_DEBUGFS_ADD(mac_0);
557 RTL_DEBUGFS_ADD(mac_1);
558 RTL_DEBUGFS_ADD(mac_2);
559 RTL_DEBUGFS_ADD(mac_3);
560 RTL_DEBUGFS_ADD(mac_4);
561 RTL_DEBUGFS_ADD(mac_5);
562 RTL_DEBUGFS_ADD(mac_6);
563 RTL_DEBUGFS_ADD(mac_7);
564 RTL_DEBUGFS_ADD(bb_8);
565 RTL_DEBUGFS_ADD(bb_9);
566 RTL_DEBUGFS_ADD(bb_a);
567 RTL_DEBUGFS_ADD(bb_b);
568 RTL_DEBUGFS_ADD(bb_c);
569 RTL_DEBUGFS_ADD(bb_d);
570 RTL_DEBUGFS_ADD(bb_e);
571 RTL_DEBUGFS_ADD(bb_f);
572 RTL_DEBUGFS_ADD(mac_10);
573 RTL_DEBUGFS_ADD(mac_11);
574 RTL_DEBUGFS_ADD(mac_12);
575 RTL_DEBUGFS_ADD(mac_13);
576 RTL_DEBUGFS_ADD(mac_14);
577 RTL_DEBUGFS_ADD(mac_15);
578 RTL_DEBUGFS_ADD(mac_16);
579 RTL_DEBUGFS_ADD(mac_17);
580 RTL_DEBUGFS_ADD(bb_18);
581 RTL_DEBUGFS_ADD(bb_19);
582 RTL_DEBUGFS_ADD(bb_1a);
583 RTL_DEBUGFS_ADD(bb_1b);
584 RTL_DEBUGFS_ADD(bb_1c);
585 RTL_DEBUGFS_ADD(bb_1d);
586 RTL_DEBUGFS_ADD(bb_1e);
587 RTL_DEBUGFS_ADD(bb_1f);
588 RTL_DEBUGFS_ADD(rf_a);
589 RTL_DEBUGFS_ADD(rf_b);
590
591 RTL_DEBUGFS_ADD(cam_1);
592 RTL_DEBUGFS_ADD(cam_2);
593 RTL_DEBUGFS_ADD(cam_3);
594
595 RTL_DEBUGFS_ADD(btcoex);
596
597 RTL_DEBUGFS_ADD_W(write_reg);
598 RTL_DEBUGFS_ADD_W(write_h2c);
599 RTL_DEBUGFS_ADD_W(write_rfreg);
600
601 RTL_DEBUGFS_ADD_RW(phydm_cmd);
602}
603
604void rtl_debug_remove_one(struct ieee80211_hw *hw)
605{
606 struct rtl_priv *rtlpriv = rtl_priv(hw);
607
608 debugfs_remove_recursive(rtlpriv->dbg.debugfs_dir);
609 rtlpriv->dbg.debugfs_dir = NULL;
610
611 vfree(rtlpriv->dbg.msg_buf);
612}
613
614void rtl_debugfs_add_topdir(void)
615{
616 debugfs_topdir = debugfs_create_dir("rtlwifi", NULL);
617}
618
619void rtl_debugfs_remove_topdir(void)
620{
621 debugfs_remove_recursive(debugfs_topdir);
622}
623
624#endif