2 * Copyright (c) International Business Machines Corp., 2006
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.
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.
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
18 * Author: Artem Bityutskiy (Битюцкий Артём)
22 * This file contains implementation of volume creation, deletion, updating and
26 #include <linux/err.h>
27 #include <linux/math64.h>
28 #include <linux/slab.h>
29 #include <linux/export.h>
32 static int self_check_volumes(struct ubi_device *ubi);
34 static ssize_t vol_attribute_show(struct device *dev,
35 struct device_attribute *attr, char *buf);
37 /* Device attributes corresponding to files in '/<sysfs>/class/ubi/ubiX_Y' */
38 static struct device_attribute attr_vol_reserved_ebs =
39 __ATTR(reserved_ebs, S_IRUGO, vol_attribute_show, NULL);
40 static struct device_attribute attr_vol_type =
41 __ATTR(type, S_IRUGO, vol_attribute_show, NULL);
42 static struct device_attribute attr_vol_name =
43 __ATTR(name, S_IRUGO, vol_attribute_show, NULL);
44 static struct device_attribute attr_vol_corrupted =
45 __ATTR(corrupted, S_IRUGO, vol_attribute_show, NULL);
46 static struct device_attribute attr_vol_alignment =
47 __ATTR(alignment, S_IRUGO, vol_attribute_show, NULL);
48 static struct device_attribute attr_vol_usable_eb_size =
49 __ATTR(usable_eb_size, S_IRUGO, vol_attribute_show, NULL);
50 static struct device_attribute attr_vol_data_bytes =
51 __ATTR(data_bytes, S_IRUGO, vol_attribute_show, NULL);
52 static struct device_attribute attr_vol_upd_marker =
53 __ATTR(upd_marker, S_IRUGO, vol_attribute_show, NULL);
56 * "Show" method for files in '/<sysfs>/class/ubi/ubiX_Y/'.
58 * Consider a situation:
59 * A. process 1 opens a sysfs file related to volume Y, say
60 * /<sysfs>/class/ubi/ubiX_Y/reserved_ebs;
61 * B. process 2 removes volume Y;
62 * C. process 1 starts reading the /<sysfs>/class/ubi/ubiX_Y/reserved_ebs file;
64 * In this situation, this function will return %-ENODEV because it will find
65 * out that the volume was removed from the @ubi->volumes array.
67 static ssize_t vol_attribute_show(struct device *dev,
68 struct device_attribute *attr, char *buf)
71 struct ubi_volume *vol = container_of(dev, struct ubi_volume, dev);
72 struct ubi_device *ubi;
74 ubi = ubi_get_device(vol->ubi->ubi_num);
78 spin_lock(&ubi->volumes_lock);
79 if (!ubi->volumes[vol->vol_id]) {
80 spin_unlock(&ubi->volumes_lock);
84 /* Take a reference to prevent volume removal */
86 spin_unlock(&ubi->volumes_lock);
88 if (attr == &attr_vol_reserved_ebs)
89 ret = sprintf(buf, "%d\n", vol->reserved_pebs);
90 else if (attr == &attr_vol_type) {
93 if (vol->vol_type == UBI_DYNAMIC_VOLUME)
97 ret = sprintf(buf, "%s\n", tp);
98 } else if (attr == &attr_vol_name)
99 ret = sprintf(buf, "%s\n", vol->name);
100 else if (attr == &attr_vol_corrupted)
101 ret = sprintf(buf, "%d\n", vol->corrupted);
102 else if (attr == &attr_vol_alignment)
103 ret = sprintf(buf, "%d\n", vol->alignment);
104 else if (attr == &attr_vol_usable_eb_size)
105 ret = sprintf(buf, "%d\n", vol->usable_leb_size);
106 else if (attr == &attr_vol_data_bytes)
107 ret = sprintf(buf, "%lld\n", vol->used_bytes);
108 else if (attr == &attr_vol_upd_marker)
109 ret = sprintf(buf, "%d\n", vol->upd_marker);
111 /* This must be a bug */
114 /* We've done the operation, drop volume and UBI device references */
115 spin_lock(&ubi->volumes_lock);
117 ubi_assert(vol->ref_count >= 0);
118 spin_unlock(&ubi->volumes_lock);
123 static struct attribute *volume_dev_attrs[] = {
124 &attr_vol_reserved_ebs.attr,
127 &attr_vol_corrupted.attr,
128 &attr_vol_alignment.attr,
129 &attr_vol_usable_eb_size.attr,
130 &attr_vol_data_bytes.attr,
131 &attr_vol_upd_marker.attr,
134 ATTRIBUTE_GROUPS(volume_dev);
136 /* Release method for volume devices */
137 static void vol_release(struct device *dev)
139 struct ubi_volume *vol = container_of(dev, struct ubi_volume, dev);
141 ubi_eba_replace_table(vol, NULL);
146 * ubi_create_volume - create volume.
147 * @ubi: UBI device description object
148 * @req: volume creation request
150 * This function creates volume described by @req. If @req->vol_id id
151 * %UBI_VOL_NUM_AUTO, this function automatically assign ID to the new volume
152 * and saves it in @req->vol_id. Returns zero in case of success and a negative
153 * error code in case of failure. Note, the caller has to have the
154 * @ubi->device_mutex locked.
156 int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
158 int i, err, vol_id = req->vol_id, do_free = 1;
159 struct ubi_volume *vol;
160 struct ubi_vtbl_record vtbl_rec;
161 struct ubi_eba_table *eba_tbl = NULL;
167 vol = kzalloc(sizeof(struct ubi_volume), GFP_KERNEL);
171 spin_lock(&ubi->volumes_lock);
172 if (vol_id == UBI_VOL_NUM_AUTO) {
173 /* Find unused volume ID */
174 dbg_gen("search for vacant volume ID");
175 for (i = 0; i < ubi->vtbl_slots; i++)
176 if (!ubi->volumes[i]) {
181 if (vol_id == UBI_VOL_NUM_AUTO) {
182 ubi_err(ubi, "out of volume IDs");
186 req->vol_id = vol_id;
189 dbg_gen("create device %d, volume %d, %llu bytes, type %d, name %s",
190 ubi->ubi_num, vol_id, (unsigned long long)req->bytes,
191 (int)req->vol_type, req->name);
193 /* Ensure that this volume does not exist */
195 if (ubi->volumes[vol_id]) {
196 ubi_err(ubi, "volume %d already exists", vol_id);
200 /* Ensure that the name is unique */
201 for (i = 0; i < ubi->vtbl_slots; i++)
202 if (ubi->volumes[i] &&
203 ubi->volumes[i]->name_len == req->name_len &&
204 !strcmp(ubi->volumes[i]->name, req->name)) {
205 ubi_err(ubi, "volume \"%s\" exists (ID %d)",
210 /* Calculate how many eraseblocks are requested */
211 vol->usable_leb_size = ubi->leb_size - ubi->leb_size % req->alignment;
212 vol->reserved_pebs = div_u64(req->bytes + vol->usable_leb_size - 1,
213 vol->usable_leb_size);
215 /* Reserve physical eraseblocks */
216 if (vol->reserved_pebs > ubi->avail_pebs) {
217 ubi_err(ubi, "not enough PEBs, only %d available",
219 if (ubi->corr_peb_count)
220 ubi_err(ubi, "%d PEBs are corrupted and not used",
221 ubi->corr_peb_count);
225 ubi->avail_pebs -= vol->reserved_pebs;
226 ubi->rsvd_pebs += vol->reserved_pebs;
227 spin_unlock(&ubi->volumes_lock);
229 vol->vol_id = vol_id;
230 vol->alignment = req->alignment;
231 vol->data_pad = ubi->leb_size % vol->alignment;
232 vol->vol_type = req->vol_type;
233 vol->name_len = req->name_len;
234 memcpy(vol->name, req->name, vol->name_len);
238 * Finish all pending erases because there may be some LEBs belonging
239 * to the same volume ID.
241 err = ubi_wl_flush(ubi, vol_id, UBI_ALL);
245 eba_tbl = ubi_eba_create_table(vol, vol->reserved_pebs);
246 if (IS_ERR(eba_tbl)) {
247 err = PTR_ERR(eba_tbl);
251 ubi_eba_replace_table(vol, eba_tbl);
253 if (vol->vol_type == UBI_DYNAMIC_VOLUME) {
254 vol->used_ebs = vol->reserved_pebs;
255 vol->last_eb_bytes = vol->usable_leb_size;
257 (long long)vol->used_ebs * vol->usable_leb_size;
259 vol->used_ebs = div_u64_rem(vol->used_bytes,
260 vol->usable_leb_size,
261 &vol->last_eb_bytes);
262 if (vol->last_eb_bytes != 0)
265 vol->last_eb_bytes = vol->usable_leb_size;
268 /* Register character device for the volume */
269 cdev_init(&vol->cdev, &ubi_vol_cdev_operations);
270 vol->cdev.owner = THIS_MODULE;
271 dev = MKDEV(MAJOR(ubi->cdev.dev), vol_id + 1);
272 err = cdev_add(&vol->cdev, dev, 1);
274 ubi_err(ubi, "cannot add character device");
278 vol->dev.release = vol_release;
279 vol->dev.parent = &ubi->dev;
281 vol->dev.class = &ubi_class;
282 vol->dev.groups = volume_dev_groups;
284 dev_set_name(&vol->dev, "%s_%d", ubi->ubi_name, vol->vol_id);
285 err = device_register(&vol->dev);
287 ubi_err(ubi, "cannot register device");
291 /* Fill volume table record */
292 memset(&vtbl_rec, 0, sizeof(struct ubi_vtbl_record));
293 vtbl_rec.reserved_pebs = cpu_to_be32(vol->reserved_pebs);
294 vtbl_rec.alignment = cpu_to_be32(vol->alignment);
295 vtbl_rec.data_pad = cpu_to_be32(vol->data_pad);
296 vtbl_rec.name_len = cpu_to_be16(vol->name_len);
297 if (vol->vol_type == UBI_DYNAMIC_VOLUME)
298 vtbl_rec.vol_type = UBI_VID_DYNAMIC;
300 vtbl_rec.vol_type = UBI_VID_STATIC;
301 memcpy(vtbl_rec.name, vol->name, vol->name_len);
303 err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec);
307 spin_lock(&ubi->volumes_lock);
308 ubi->volumes[vol_id] = vol;
310 spin_unlock(&ubi->volumes_lock);
312 ubi_volume_notify(ubi, vol, UBI_VOLUME_ADDED);
313 self_check_volumes(ubi);
318 * We have registered our device, we should not free the volume
319 * description object in this function in case of an error - it is
320 * freed by the release function.
322 * Get device reference to prevent the release function from being
323 * called just after sysfs has been closed.
326 get_device(&vol->dev);
327 device_unregister(&vol->dev);
329 cdev_del(&vol->cdev);
332 ubi_eba_destroy_table(eba_tbl);
334 spin_lock(&ubi->volumes_lock);
335 ubi->rsvd_pebs -= vol->reserved_pebs;
336 ubi->avail_pebs += vol->reserved_pebs;
338 spin_unlock(&ubi->volumes_lock);
342 put_device(&vol->dev);
343 ubi_err(ubi, "cannot create volume %d, error %d", vol_id, err);
348 * ubi_remove_volume - remove volume.
349 * @desc: volume descriptor
350 * @no_vtbl: do not change volume table if not zero
352 * This function removes volume described by @desc. The volume has to be opened
353 * in "exclusive" mode. Returns zero in case of success and a negative error
354 * code in case of failure. The caller has to have the @ubi->device_mutex
357 int ubi_remove_volume(struct ubi_volume_desc *desc, int no_vtbl)
359 struct ubi_volume *vol = desc->vol;
360 struct ubi_device *ubi = vol->ubi;
361 int i, err, vol_id = vol->vol_id, reserved_pebs = vol->reserved_pebs;
363 dbg_gen("remove device %d, volume %d", ubi->ubi_num, vol_id);
364 ubi_assert(desc->mode == UBI_EXCLUSIVE);
365 ubi_assert(vol == ubi->volumes[vol_id]);
370 spin_lock(&ubi->volumes_lock);
371 if (vol->ref_count > 1) {
373 * The volume is busy, probably someone is reading one of its
379 ubi->volumes[vol_id] = NULL;
380 spin_unlock(&ubi->volumes_lock);
383 err = ubi_change_vtbl_record(ubi, vol_id, NULL);
388 for (i = 0; i < vol->reserved_pebs; i++) {
389 err = ubi_eba_unmap_leb(ubi, vol, i);
394 cdev_del(&vol->cdev);
395 device_unregister(&vol->dev);
397 spin_lock(&ubi->volumes_lock);
398 ubi->rsvd_pebs -= reserved_pebs;
399 ubi->avail_pebs += reserved_pebs;
400 ubi_update_reserved(ubi);
402 spin_unlock(&ubi->volumes_lock);
404 ubi_volume_notify(ubi, vol, UBI_VOLUME_REMOVED);
406 self_check_volumes(ubi);
411 ubi_err(ubi, "cannot remove volume %d, error %d", vol_id, err);
412 spin_lock(&ubi->volumes_lock);
413 ubi->volumes[vol_id] = vol;
415 spin_unlock(&ubi->volumes_lock);
420 * ubi_resize_volume - re-size volume.
421 * @desc: volume descriptor
422 * @reserved_pebs: new size in physical eraseblocks
424 * This function re-sizes the volume and returns zero in case of success, and a
425 * negative error code in case of failure. The caller has to have the
426 * @ubi->device_mutex locked.
428 int ubi_resize_volume(struct ubi_volume_desc *desc, int reserved_pebs)
431 struct ubi_volume *vol = desc->vol;
432 struct ubi_device *ubi = vol->ubi;
433 struct ubi_vtbl_record vtbl_rec;
434 struct ubi_eba_table *new_eba_tbl = NULL;
435 int vol_id = vol->vol_id;
440 dbg_gen("re-size device %d, volume %d to from %d to %d PEBs",
441 ubi->ubi_num, vol_id, vol->reserved_pebs, reserved_pebs);
443 if (vol->vol_type == UBI_STATIC_VOLUME &&
444 reserved_pebs < vol->used_ebs) {
445 ubi_err(ubi, "too small size %d, %d LEBs contain data",
446 reserved_pebs, vol->used_ebs);
450 /* If the size is the same, we have nothing to do */
451 if (reserved_pebs == vol->reserved_pebs)
454 new_eba_tbl = ubi_eba_create_table(vol, reserved_pebs);
455 if (IS_ERR(new_eba_tbl))
456 return PTR_ERR(new_eba_tbl);
458 spin_lock(&ubi->volumes_lock);
459 if (vol->ref_count > 1) {
460 spin_unlock(&ubi->volumes_lock);
464 spin_unlock(&ubi->volumes_lock);
466 /* Reserve physical eraseblocks */
467 pebs = reserved_pebs - vol->reserved_pebs;
469 spin_lock(&ubi->volumes_lock);
470 if (pebs > ubi->avail_pebs) {
471 ubi_err(ubi, "not enough PEBs: requested %d, available %d",
472 pebs, ubi->avail_pebs);
473 if (ubi->corr_peb_count)
474 ubi_err(ubi, "%d PEBs are corrupted and not used",
475 ubi->corr_peb_count);
476 spin_unlock(&ubi->volumes_lock);
480 ubi->avail_pebs -= pebs;
481 ubi->rsvd_pebs += pebs;
482 ubi_eba_copy_table(vol, new_eba_tbl, vol->reserved_pebs);
483 ubi_eba_replace_table(vol, new_eba_tbl);
484 spin_unlock(&ubi->volumes_lock);
488 for (i = 0; i < -pebs; i++) {
489 err = ubi_eba_unmap_leb(ubi, vol, reserved_pebs + i);
493 spin_lock(&ubi->volumes_lock);
494 ubi->rsvd_pebs += pebs;
495 ubi->avail_pebs -= pebs;
496 ubi_update_reserved(ubi);
497 ubi_eba_copy_table(vol, new_eba_tbl, reserved_pebs);
498 ubi_eba_replace_table(vol, new_eba_tbl);
499 spin_unlock(&ubi->volumes_lock);
503 * When we shrink a volume we have to flush all pending (erase) work.
504 * Otherwise it can happen that upon next attach UBI finds a LEB with
505 * lnum > highest_lnum and refuses to attach.
508 err = ubi_wl_flush(ubi, vol_id, UBI_ALL);
513 /* Change volume table record */
514 vtbl_rec = ubi->vtbl[vol_id];
515 vtbl_rec.reserved_pebs = cpu_to_be32(reserved_pebs);
516 err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec);
520 vol->reserved_pebs = reserved_pebs;
521 if (vol->vol_type == UBI_DYNAMIC_VOLUME) {
522 vol->used_ebs = reserved_pebs;
523 vol->last_eb_bytes = vol->usable_leb_size;
525 (long long)vol->used_ebs * vol->usable_leb_size;
528 ubi_volume_notify(ubi, vol, UBI_VOLUME_RESIZED);
529 self_check_volumes(ubi);
534 spin_lock(&ubi->volumes_lock);
535 ubi->rsvd_pebs -= pebs;
536 ubi->avail_pebs += pebs;
537 spin_unlock(&ubi->volumes_lock);
545 * ubi_rename_volumes - re-name UBI volumes.
546 * @ubi: UBI device description object
547 * @rename_list: list of &struct ubi_rename_entry objects
549 * This function re-names or removes volumes specified in the re-name list.
550 * Returns zero in case of success and a negative error code in case of
553 int ubi_rename_volumes(struct ubi_device *ubi, struct list_head *rename_list)
556 struct ubi_rename_entry *re;
558 err = ubi_vtbl_rename_volumes(ubi, rename_list);
562 list_for_each_entry(re, rename_list, list) {
564 err = ubi_remove_volume(re->desc, 1);
568 struct ubi_volume *vol = re->desc->vol;
570 spin_lock(&ubi->volumes_lock);
571 vol->name_len = re->new_name_len;
572 memcpy(vol->name, re->new_name, re->new_name_len + 1);
573 spin_unlock(&ubi->volumes_lock);
574 ubi_volume_notify(ubi, vol, UBI_VOLUME_RENAMED);
579 self_check_volumes(ubi);
584 * ubi_add_volume - add volume.
585 * @ubi: UBI device description object
586 * @vol: volume description object
588 * This function adds an existing volume and initializes all its data
589 * structures. Returns zero in case of success and a negative error code in
592 int ubi_add_volume(struct ubi_device *ubi, struct ubi_volume *vol)
594 int err, vol_id = vol->vol_id;
597 dbg_gen("add volume %d", vol_id);
599 /* Register character device for the volume */
600 cdev_init(&vol->cdev, &ubi_vol_cdev_operations);
601 vol->cdev.owner = THIS_MODULE;
602 dev = MKDEV(MAJOR(ubi->cdev.dev), vol->vol_id + 1);
603 err = cdev_add(&vol->cdev, dev, 1);
605 ubi_err(ubi, "cannot add character device for volume %d, error %d",
610 vol->dev.release = vol_release;
611 vol->dev.parent = &ubi->dev;
613 vol->dev.class = &ubi_class;
614 vol->dev.groups = volume_dev_groups;
615 dev_set_name(&vol->dev, "%s_%d", ubi->ubi_name, vol->vol_id);
616 err = device_register(&vol->dev);
620 self_check_volumes(ubi);
624 cdev_del(&vol->cdev);
629 * ubi_free_volume - free volume.
630 * @ubi: UBI device description object
631 * @vol: volume description object
633 * This function frees all resources for volume @vol but does not remove it.
634 * Used only when the UBI device is detached.
636 void ubi_free_volume(struct ubi_device *ubi, struct ubi_volume *vol)
638 dbg_gen("free volume %d", vol->vol_id);
640 ubi->volumes[vol->vol_id] = NULL;
641 cdev_del(&vol->cdev);
642 device_unregister(&vol->dev);
646 * self_check_volume - check volume information.
647 * @ubi: UBI device description object
650 * Returns zero if volume is all right and a a negative error code if not.
652 static int self_check_volume(struct ubi_device *ubi, int vol_id)
654 int idx = vol_id2idx(ubi, vol_id);
655 int reserved_pebs, alignment, data_pad, vol_type, name_len, upd_marker;
656 const struct ubi_volume *vol;
660 spin_lock(&ubi->volumes_lock);
661 reserved_pebs = be32_to_cpu(ubi->vtbl[vol_id].reserved_pebs);
662 vol = ubi->volumes[idx];
666 ubi_err(ubi, "no volume info, but volume exists");
669 spin_unlock(&ubi->volumes_lock);
673 if (vol->reserved_pebs < 0 || vol->alignment < 0 || vol->data_pad < 0 ||
675 ubi_err(ubi, "negative values");
678 if (vol->alignment > ubi->leb_size || vol->alignment == 0) {
679 ubi_err(ubi, "bad alignment");
683 n = vol->alignment & (ubi->min_io_size - 1);
684 if (vol->alignment != 1 && n) {
685 ubi_err(ubi, "alignment is not multiple of min I/O unit");
689 n = ubi->leb_size % vol->alignment;
690 if (vol->data_pad != n) {
691 ubi_err(ubi, "bad data_pad, has to be %lld", n);
695 if (vol->vol_type != UBI_DYNAMIC_VOLUME &&
696 vol->vol_type != UBI_STATIC_VOLUME) {
697 ubi_err(ubi, "bad vol_type");
701 if (vol->upd_marker && vol->corrupted) {
702 ubi_err(ubi, "update marker and corrupted simultaneously");
706 if (vol->reserved_pebs > ubi->good_peb_count) {
707 ubi_err(ubi, "too large reserved_pebs");
711 n = ubi->leb_size - vol->data_pad;
712 if (vol->usable_leb_size != ubi->leb_size - vol->data_pad) {
713 ubi_err(ubi, "bad usable_leb_size, has to be %lld", n);
717 if (vol->name_len > UBI_VOL_NAME_MAX) {
718 ubi_err(ubi, "too long volume name, max is %d",
723 n = strnlen(vol->name, vol->name_len + 1);
724 if (n != vol->name_len) {
725 ubi_err(ubi, "bad name_len %lld", n);
729 n = (long long)vol->used_ebs * vol->usable_leb_size;
730 if (vol->vol_type == UBI_DYNAMIC_VOLUME) {
731 if (vol->corrupted) {
732 ubi_err(ubi, "corrupted dynamic volume");
735 if (vol->used_ebs != vol->reserved_pebs) {
736 ubi_err(ubi, "bad used_ebs");
739 if (vol->last_eb_bytes != vol->usable_leb_size) {
740 ubi_err(ubi, "bad last_eb_bytes");
743 if (vol->used_bytes != n) {
744 ubi_err(ubi, "bad used_bytes");
748 if (vol->used_ebs < 0 || vol->used_ebs > vol->reserved_pebs) {
749 ubi_err(ubi, "bad used_ebs");
752 if (vol->last_eb_bytes < 0 ||
753 vol->last_eb_bytes > vol->usable_leb_size) {
754 ubi_err(ubi, "bad last_eb_bytes");
757 if (vol->used_bytes < 0 || vol->used_bytes > n ||
758 vol->used_bytes < n - vol->usable_leb_size) {
759 ubi_err(ubi, "bad used_bytes");
764 alignment = be32_to_cpu(ubi->vtbl[vol_id].alignment);
765 data_pad = be32_to_cpu(ubi->vtbl[vol_id].data_pad);
766 name_len = be16_to_cpu(ubi->vtbl[vol_id].name_len);
767 upd_marker = ubi->vtbl[vol_id].upd_marker;
768 name = &ubi->vtbl[vol_id].name[0];
769 if (ubi->vtbl[vol_id].vol_type == UBI_VID_DYNAMIC)
770 vol_type = UBI_DYNAMIC_VOLUME;
772 vol_type = UBI_STATIC_VOLUME;
774 if (alignment != vol->alignment || data_pad != vol->data_pad ||
775 upd_marker != vol->upd_marker || vol_type != vol->vol_type ||
776 name_len != vol->name_len || strncmp(name, vol->name, name_len)) {
777 ubi_err(ubi, "volume info is different");
781 spin_unlock(&ubi->volumes_lock);
785 ubi_err(ubi, "self-check failed for volume %d", vol_id);
787 ubi_dump_vol_info(vol);
788 ubi_dump_vtbl_record(&ubi->vtbl[vol_id], vol_id);
790 spin_unlock(&ubi->volumes_lock);
795 * self_check_volumes - check information about all volumes.
796 * @ubi: UBI device description object
798 * Returns zero if volumes are all right and a a negative error code if not.
800 static int self_check_volumes(struct ubi_device *ubi)
804 if (!ubi_dbg_chk_gen(ubi))
807 for (i = 0; i < ubi->vtbl_slots; i++) {
808 err = self_check_volume(ubi, i);