blob: 63cb1d7236ce1112f15d2ff9855db93a5a3db0c0 [file] [log] [blame]
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +04001/*
2 * Copyright (c) International Business Machines Corp., 2006
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
12 * the GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 *
18 * Author: Artem Bityutskiy (Битюцкий Артём)
19 */
20
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +040021#include "ubi.h"
Artem Bityutskiy2a734bb2011-05-18 14:53:05 +030022#include <linux/debugfs.h>
23#include <linux/uaccess.h>
Artem Bityutskiyb342efd2011-03-11 14:33:23 +020024#include <linux/module.h>
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +040025
Artem Bityutskiyef7088e2012-04-24 07:10:33 +030026
27/**
28 * ubi_dump_flash - dump a region of flash.
29 * @ubi: UBI device description object
30 * @pnum: the physical eraseblock number to dump
31 * @offset: the starting offset within the physical eraseblock to dump
32 * @len: the length of the region to dump
33 */
34void ubi_dump_flash(struct ubi_device *ubi, int pnum, int offset, int len)
35{
36 int err;
37 size_t read;
38 void *buf;
39 loff_t addr = (loff_t)pnum * ubi->peb_size + offset;
40
41 buf = vmalloc(len);
42 if (!buf)
43 return;
44 err = mtd_read(ubi->mtd, addr, len, &read, buf);
45 if (err && err != -EUCLEAN) {
Artem Bityutskiy049333c2012-08-27 14:43:54 +030046 ubi_err("error %d while reading %d bytes from PEB %d:%d, read %zd bytes",
47 err, len, pnum, offset, read);
Artem Bityutskiyef7088e2012-04-24 07:10:33 +030048 goto out;
49 }
50
51 ubi_msg("dumping %d bytes of data from PEB %d, offset %d",
52 len, pnum, offset);
53 print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1, buf, len, 1);
54out:
55 vfree(buf);
56 return;
57}
58
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +040059/**
Artem Bityutskiya904e3f2012-04-25 09:02:44 +030060 * ubi_dump_ec_hdr - dump an erase counter header.
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +040061 * @ec_hdr: the erase counter header to dump
62 */
Artem Bityutskiya904e3f2012-04-25 09:02:44 +030063void ubi_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr)
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +040064{
Artem Bityutskiye28453b2012-08-27 15:13:05 +030065 pr_err("Erase counter header dump:\n");
66 pr_err("\tmagic %#08x\n", be32_to_cpu(ec_hdr->magic));
67 pr_err("\tversion %d\n", (int)ec_hdr->version);
68 pr_err("\tec %llu\n", (long long)be64_to_cpu(ec_hdr->ec));
69 pr_err("\tvid_hdr_offset %d\n", be32_to_cpu(ec_hdr->vid_hdr_offset));
70 pr_err("\tdata_offset %d\n", be32_to_cpu(ec_hdr->data_offset));
71 pr_err("\timage_seq %d\n", be32_to_cpu(ec_hdr->image_seq));
72 pr_err("\thdr_crc %#08x\n", be32_to_cpu(ec_hdr->hdr_crc));
73 pr_err("erase counter header hexdump:\n");
Artem Bityutskiy69866462007-08-29 14:56:20 +030074 print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
75 ec_hdr, UBI_EC_HDR_SIZE, 1);
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +040076}
77
78/**
Artem Bityutskiya904e3f2012-04-25 09:02:44 +030079 * ubi_dump_vid_hdr - dump a volume identifier header.
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +040080 * @vid_hdr: the volume identifier header to dump
81 */
Artem Bityutskiya904e3f2012-04-25 09:02:44 +030082void ubi_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr)
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +040083{
Artem Bityutskiye28453b2012-08-27 15:13:05 +030084 pr_err("Volume identifier header dump:\n");
85 pr_err("\tmagic %08x\n", be32_to_cpu(vid_hdr->magic));
86 pr_err("\tversion %d\n", (int)vid_hdr->version);
87 pr_err("\tvol_type %d\n", (int)vid_hdr->vol_type);
88 pr_err("\tcopy_flag %d\n", (int)vid_hdr->copy_flag);
89 pr_err("\tcompat %d\n", (int)vid_hdr->compat);
90 pr_err("\tvol_id %d\n", be32_to_cpu(vid_hdr->vol_id));
91 pr_err("\tlnum %d\n", be32_to_cpu(vid_hdr->lnum));
92 pr_err("\tdata_size %d\n", be32_to_cpu(vid_hdr->data_size));
93 pr_err("\tused_ebs %d\n", be32_to_cpu(vid_hdr->used_ebs));
94 pr_err("\tdata_pad %d\n", be32_to_cpu(vid_hdr->data_pad));
95 pr_err("\tsqnum %llu\n",
Christoph Hellwig3261ebd2007-05-21 17:41:46 +030096 (unsigned long long)be64_to_cpu(vid_hdr->sqnum));
Artem Bityutskiye28453b2012-08-27 15:13:05 +030097 pr_err("\thdr_crc %08x\n", be32_to_cpu(vid_hdr->hdr_crc));
98 pr_err("Volume identifier header hexdump:\n");
Artem Bityutskiyc8566352008-07-16 17:40:22 +030099 print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
100 vid_hdr, UBI_VID_HDR_SIZE, 1);
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400101}
102
103/**
Artem Bityutskiy766381f2012-05-16 17:53:17 +0300104 * ubi_dump_vol_info - dump volume information.
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400105 * @vol: UBI volume description object
106 */
Artem Bityutskiy766381f2012-05-16 17:53:17 +0300107void ubi_dump_vol_info(const struct ubi_volume *vol)
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400108{
Artem Bityutskiye28453b2012-08-27 15:13:05 +0300109 pr_err("Volume information dump:\n");
110 pr_err("\tvol_id %d\n", vol->vol_id);
111 pr_err("\treserved_pebs %d\n", vol->reserved_pebs);
112 pr_err("\talignment %d\n", vol->alignment);
113 pr_err("\tdata_pad %d\n", vol->data_pad);
114 pr_err("\tvol_type %d\n", vol->vol_type);
115 pr_err("\tname_len %d\n", vol->name_len);
116 pr_err("\tusable_leb_size %d\n", vol->usable_leb_size);
117 pr_err("\tused_ebs %d\n", vol->used_ebs);
118 pr_err("\tused_bytes %lld\n", vol->used_bytes);
119 pr_err("\tlast_eb_bytes %d\n", vol->last_eb_bytes);
120 pr_err("\tcorrupted %d\n", vol->corrupted);
121 pr_err("\tupd_marker %d\n", vol->upd_marker);
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400122
123 if (vol->name_len <= UBI_VOL_NAME_MAX &&
124 strnlen(vol->name, vol->name_len + 1) == vol->name_len) {
Artem Bityutskiye28453b2012-08-27 15:13:05 +0300125 pr_err("\tname %s\n", vol->name);
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400126 } else {
Artem Bityutskiye28453b2012-08-27 15:13:05 +0300127 pr_err("\t1st 5 characters of name: %c%c%c%c%c\n",
Artem Bityutskiyc8566352008-07-16 17:40:22 +0300128 vol->name[0], vol->name[1], vol->name[2],
129 vol->name[3], vol->name[4]);
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400130 }
131}
132
133/**
Artem Bityutskiy1f021e1d2012-05-16 17:56:50 +0300134 * ubi_dump_vtbl_record - dump a &struct ubi_vtbl_record object.
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400135 * @r: the object to dump
136 * @idx: volume table index
137 */
Artem Bityutskiy1f021e1d2012-05-16 17:56:50 +0300138void ubi_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx)
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400139{
Christoph Hellwig3261ebd2007-05-21 17:41:46 +0300140 int name_len = be16_to_cpu(r->name_len);
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400141
Artem Bityutskiye28453b2012-08-27 15:13:05 +0300142 pr_err("Volume table record %d dump:\n", idx);
143 pr_err("\treserved_pebs %d\n", be32_to_cpu(r->reserved_pebs));
144 pr_err("\talignment %d\n", be32_to_cpu(r->alignment));
145 pr_err("\tdata_pad %d\n", be32_to_cpu(r->data_pad));
146 pr_err("\tvol_type %d\n", (int)r->vol_type);
147 pr_err("\tupd_marker %d\n", (int)r->upd_marker);
148 pr_err("\tname_len %d\n", name_len);
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400149
150 if (r->name[0] == '\0') {
Artem Bityutskiye28453b2012-08-27 15:13:05 +0300151 pr_err("\tname NULL\n");
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400152 return;
153 }
154
155 if (name_len <= UBI_VOL_NAME_MAX &&
156 strnlen(&r->name[0], name_len + 1) == name_len) {
Artem Bityutskiye28453b2012-08-27 15:13:05 +0300157 pr_err("\tname %s\n", &r->name[0]);
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400158 } else {
Artem Bityutskiye28453b2012-08-27 15:13:05 +0300159 pr_err("\t1st 5 characters of name: %c%c%c%c%c\n",
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400160 r->name[0], r->name[1], r->name[2], r->name[3],
161 r->name[4]);
162 }
Artem Bityutskiye28453b2012-08-27 15:13:05 +0300163 pr_err("\tcrc %#08x\n", be32_to_cpu(r->crc));
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400164}
165
166/**
Artem Bityutskiy517af482012-05-17 14:38:34 +0300167 * ubi_dump_av - dump a &struct ubi_ainf_volume object.
168 * @av: the object to dump
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400169 */
Artem Bityutskiy517af482012-05-17 14:38:34 +0300170void ubi_dump_av(const struct ubi_ainf_volume *av)
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400171{
Artem Bityutskiye28453b2012-08-27 15:13:05 +0300172 pr_err("Volume attaching information dump:\n");
173 pr_err("\tvol_id %d\n", av->vol_id);
174 pr_err("\thighest_lnum %d\n", av->highest_lnum);
175 pr_err("\tleb_count %d\n", av->leb_count);
176 pr_err("\tcompat %d\n", av->compat);
177 pr_err("\tvol_type %d\n", av->vol_type);
178 pr_err("\tused_ebs %d\n", av->used_ebs);
179 pr_err("\tlast_data_size %d\n", av->last_data_size);
180 pr_err("\tdata_pad %d\n", av->data_pad);
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400181}
182
183/**
Artem Bityutskiy2c5ec5c2012-05-17 08:26:24 +0300184 * ubi_dump_aeb - dump a &struct ubi_ainf_peb object.
185 * @aeb: the object to dump
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400186 * @type: object type: 0 - not corrupted, 1 - corrupted
187 */
Artem Bityutskiy2c5ec5c2012-05-17 08:26:24 +0300188void ubi_dump_aeb(const struct ubi_ainf_peb *aeb, int type)
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400189{
Artem Bityutskiye28453b2012-08-27 15:13:05 +0300190 pr_err("eraseblock attaching information dump:\n");
191 pr_err("\tec %d\n", aeb->ec);
192 pr_err("\tpnum %d\n", aeb->pnum);
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400193 if (type == 0) {
Artem Bityutskiye28453b2012-08-27 15:13:05 +0300194 pr_err("\tlnum %d\n", aeb->lnum);
195 pr_err("\tscrub %d\n", aeb->scrub);
196 pr_err("\tsqnum %llu\n", aeb->sqnum);
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400197 }
198}
199
200/**
Artem Bityutskiy718c00b2012-05-16 18:03:32 +0300201 * ubi_dump_mkvol_req - dump a &struct ubi_mkvol_req object.
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400202 * @req: the object to dump
203 */
Artem Bityutskiy718c00b2012-05-16 18:03:32 +0300204void ubi_dump_mkvol_req(const struct ubi_mkvol_req *req)
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400205{
206 char nm[17];
207
Artem Bityutskiye28453b2012-08-27 15:13:05 +0300208 pr_err("Volume creation request dump:\n");
209 pr_err("\tvol_id %d\n", req->vol_id);
210 pr_err("\talignment %d\n", req->alignment);
211 pr_err("\tbytes %lld\n", (long long)req->bytes);
212 pr_err("\tvol_type %d\n", req->vol_type);
213 pr_err("\tname_len %d\n", req->name_len);
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400214
215 memcpy(nm, req->name, 16);
216 nm[16] = 0;
Artem Bityutskiye28453b2012-08-27 15:13:05 +0300217 pr_err("\t1st 16 characters of name: %s\n", nm);
Artem B. Bityutskiy801c1352006-06-27 12:22:22 +0400218}
219
Artem Bityutskiy2a734bb2011-05-18 14:53:05 +0300220/*
221 * Root directory for UBI stuff in debugfs. Contains sub-directories which
222 * contain the stuff specific to particular UBI devices.
223 */
224static struct dentry *dfs_rootdir;
225
226/**
227 * ubi_debugfs_init - create UBI debugfs directory.
228 *
229 * Create UBI debugfs directory. Returns zero in case of success and a negative
230 * error code in case of failure.
231 */
232int ubi_debugfs_init(void)
233{
Brian Norris903e0e42012-06-18 16:31:23 -0700234 if (!IS_ENABLED(CONFIG_DEBUG_FS))
Artem Bityutskiye9b4cf22012-06-06 15:22:41 +0300235 return 0;
236
Artem Bityutskiy2a734bb2011-05-18 14:53:05 +0300237 dfs_rootdir = debugfs_create_dir("ubi", NULL);
238 if (IS_ERR_OR_NULL(dfs_rootdir)) {
239 int err = dfs_rootdir ? -ENODEV : PTR_ERR(dfs_rootdir);
240
241 ubi_err("cannot create \"ubi\" debugfs directory, error %d\n",
242 err);
243 return err;
244 }
245
246 return 0;
247}
248
249/**
250 * ubi_debugfs_exit - remove UBI debugfs directory.
251 */
252void ubi_debugfs_exit(void)
253{
Brian Norris903e0e42012-06-18 16:31:23 -0700254 if (IS_ENABLED(CONFIG_DEBUG_FS))
Artem Bityutskiye9b4cf22012-06-06 15:22:41 +0300255 debugfs_remove(dfs_rootdir);
Artem Bityutskiy2a734bb2011-05-18 14:53:05 +0300256}
257
258/* Read an UBI debugfs file */
259static ssize_t dfs_file_read(struct file *file, char __user *user_buf,
260 size_t count, loff_t *ppos)
261{
262 unsigned long ubi_num = (unsigned long)file->private_data;
263 struct dentry *dent = file->f_path.dentry;
264 struct ubi_device *ubi;
265 struct ubi_debug_info *d;
266 char buf[3];
267 int val;
268
269 ubi = ubi_get_device(ubi_num);
270 if (!ubi)
271 return -ENODEV;
Ezequiel Garciaeab73772012-11-28 09:18:30 -0300272 d = &ubi->dbg;
Artem Bityutskiy2a734bb2011-05-18 14:53:05 +0300273
274 if (dent == d->dfs_chk_gen)
275 val = d->chk_gen;
276 else if (dent == d->dfs_chk_io)
277 val = d->chk_io;
Artem Bityutskiycd6d8562011-05-18 16:21:43 +0300278 else if (dent == d->dfs_disable_bgt)
279 val = d->disable_bgt;
280 else if (dent == d->dfs_emulate_bitflips)
281 val = d->emulate_bitflips;
282 else if (dent == d->dfs_emulate_io_failures)
283 val = d->emulate_io_failures;
Artem Bityutskiy2a734bb2011-05-18 14:53:05 +0300284 else {
285 count = -EINVAL;
286 goto out;
287 }
288
289 if (val)
290 buf[0] = '1';
291 else
292 buf[0] = '0';
293 buf[1] = '\n';
294 buf[2] = 0x00;
295
296 count = simple_read_from_buffer(user_buf, count, ppos, buf, 2);
297
298out:
299 ubi_put_device(ubi);
300 return count;
301}
302
303/* Write an UBI debugfs file */
304static ssize_t dfs_file_write(struct file *file, const char __user *user_buf,
305 size_t count, loff_t *ppos)
306{
307 unsigned long ubi_num = (unsigned long)file->private_data;
308 struct dentry *dent = file->f_path.dentry;
309 struct ubi_device *ubi;
310 struct ubi_debug_info *d;
311 size_t buf_size;
312 char buf[8];
313 int val;
314
315 ubi = ubi_get_device(ubi_num);
316 if (!ubi)
317 return -ENODEV;
Ezequiel Garciaeab73772012-11-28 09:18:30 -0300318 d = &ubi->dbg;
Artem Bityutskiy2a734bb2011-05-18 14:53:05 +0300319
320 buf_size = min_t(size_t, count, (sizeof(buf) - 1));
321 if (copy_from_user(buf, user_buf, buf_size)) {
322 count = -EFAULT;
323 goto out;
324 }
325
326 if (buf[0] == '1')
327 val = 1;
328 else if (buf[0] == '0')
329 val = 0;
330 else {
331 count = -EINVAL;
332 goto out;
333 }
334
335 if (dent == d->dfs_chk_gen)
336 d->chk_gen = val;
337 else if (dent == d->dfs_chk_io)
338 d->chk_io = val;
Artem Bityutskiycd6d8562011-05-18 16:21:43 +0300339 else if (dent == d->dfs_disable_bgt)
340 d->disable_bgt = val;
341 else if (dent == d->dfs_emulate_bitflips)
342 d->emulate_bitflips = val;
343 else if (dent == d->dfs_emulate_io_failures)
344 d->emulate_io_failures = val;
Artem Bityutskiy2a734bb2011-05-18 14:53:05 +0300345 else
346 count = -EINVAL;
347
348out:
349 ubi_put_device(ubi);
350 return count;
351}
352
Artem Bityutskiy2a734bb2011-05-18 14:53:05 +0300353/* File operations for all UBI debugfs files */
354static const struct file_operations dfs_fops = {
355 .read = dfs_file_read,
356 .write = dfs_file_write,
Stephen Boyd234e3402012-04-05 14:25:11 -0700357 .open = simple_open,
Artem Bityutskiy2a734bb2011-05-18 14:53:05 +0300358 .llseek = no_llseek,
359 .owner = THIS_MODULE,
360};
361
362/**
363 * ubi_debugfs_init_dev - initialize debugfs for an UBI device.
364 * @ubi: UBI device description object
365 *
366 * This function creates all debugfs files for UBI device @ubi. Returns zero in
367 * case of success and a negative error code in case of failure.
368 */
369int ubi_debugfs_init_dev(struct ubi_device *ubi)
370{
371 int err, n;
372 unsigned long ubi_num = ubi->ubi_num;
373 const char *fname;
374 struct dentry *dent;
Ezequiel Garciaeab73772012-11-28 09:18:30 -0300375 struct ubi_debug_info *d = &ubi->dbg;
Artem Bityutskiy2a734bb2011-05-18 14:53:05 +0300376
Brian Norris903e0e42012-06-18 16:31:23 -0700377 if (!IS_ENABLED(CONFIG_DEBUG_FS))
Artem Bityutskiye9b4cf22012-06-06 15:22:41 +0300378 return 0;
379
Artem Bityutskiy2a734bb2011-05-18 14:53:05 +0300380 n = snprintf(d->dfs_dir_name, UBI_DFS_DIR_LEN + 1, UBI_DFS_DIR_NAME,
381 ubi->ubi_num);
382 if (n == UBI_DFS_DIR_LEN) {
383 /* The array size is too small */
384 fname = UBI_DFS_DIR_NAME;
385 dent = ERR_PTR(-EINVAL);
386 goto out;
387 }
388
389 fname = d->dfs_dir_name;
390 dent = debugfs_create_dir(fname, dfs_rootdir);
391 if (IS_ERR_OR_NULL(dent))
392 goto out;
393 d->dfs_dir = dent;
394
395 fname = "chk_gen";
396 dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, (void *)ubi_num,
397 &dfs_fops);
398 if (IS_ERR_OR_NULL(dent))
399 goto out_remove;
400 d->dfs_chk_gen = dent;
401
402 fname = "chk_io";
403 dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, (void *)ubi_num,
404 &dfs_fops);
405 if (IS_ERR_OR_NULL(dent))
406 goto out_remove;
407 d->dfs_chk_io = dent;
408
Artem Bityutskiycd6d8562011-05-18 16:21:43 +0300409 fname = "tst_disable_bgt";
410 dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, (void *)ubi_num,
411 &dfs_fops);
412 if (IS_ERR_OR_NULL(dent))
413 goto out_remove;
414 d->dfs_disable_bgt = dent;
415
416 fname = "tst_emulate_bitflips";
417 dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, (void *)ubi_num,
418 &dfs_fops);
419 if (IS_ERR_OR_NULL(dent))
420 goto out_remove;
421 d->dfs_emulate_bitflips = dent;
422
423 fname = "tst_emulate_io_failures";
424 dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, (void *)ubi_num,
425 &dfs_fops);
426 if (IS_ERR_OR_NULL(dent))
427 goto out_remove;
428 d->dfs_emulate_io_failures = dent;
429
Artem Bityutskiy2a734bb2011-05-18 14:53:05 +0300430 return 0;
431
432out_remove:
433 debugfs_remove_recursive(d->dfs_dir);
434out:
435 err = dent ? PTR_ERR(dent) : -ENODEV;
436 ubi_err("cannot create \"%s\" debugfs file or directory, error %d\n",
437 fname, err);
438 return err;
439}
440
441/**
442 * dbg_debug_exit_dev - free all debugfs files corresponding to device @ubi
443 * @ubi: UBI device description object
444 */
445void ubi_debugfs_exit_dev(struct ubi_device *ubi)
446{
Brian Norris903e0e42012-06-18 16:31:23 -0700447 if (IS_ENABLED(CONFIG_DEBUG_FS))
Ezequiel Garciaeab73772012-11-28 09:18:30 -0300448 debugfs_remove_recursive(ubi->dbg.dfs_dir);
Artem Bityutskiy2a734bb2011-05-18 14:53:05 +0300449}