blob: 1060337c06df7a57b0a1a76455635a004ad22543 [file] [log] [blame]
Richard Purdie4b23aff2007-05-29 13:31:42 +01001/*
2 * MTD Oops/Panic logger
3 *
4 * Copyright (C) 2007 Nokia Corporation. All rights reserved.
5 *
6 * Author: Richard Purdie <rpurdie@openedhand.com>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA
21 *
22 */
23
24#include <linux/kernel.h>
25#include <linux/module.h>
26#include <linux/console.h>
27#include <linux/vmalloc.h>
28#include <linux/workqueue.h>
29#include <linux/sched.h>
30#include <linux/wait.h>
Richard Purdie621e4f82008-02-06 10:17:50 +000031#include <linux/delay.h>
Richard Purdie47c152b2008-01-29 10:21:56 +000032#include <linux/spinlock.h>
David Woodhousef9f7dd22008-02-07 10:50:57 +000033#include <linux/interrupt.h>
Richard Purdie4b23aff2007-05-29 13:31:42 +010034#include <linux/mtd/mtd.h>
35
Richard Purdief0482ee2008-07-26 09:22:45 +010036#define MTDOOPS_KERNMSG_MAGIC 0x5d005d00
Richard Purdie4b23aff2007-05-29 13:31:42 +010037#define OOPS_PAGE_SIZE 4096
38
Adrian Bunk7903cba2008-04-18 13:44:11 -070039static struct mtdoops_context {
Richard Purdie4b23aff2007-05-29 13:31:42 +010040 int mtd_index;
Richard Purdie6ce0a852008-01-29 11:27:11 +000041 struct work_struct work_erase;
42 struct work_struct work_write;
Richard Purdie4b23aff2007-05-29 13:31:42 +010043 struct mtd_info *mtd;
44 int oops_pages;
45 int nextpage;
46 int nextcount;
Adrian Huntere2a0f252009-02-16 18:21:35 +020047 char *name;
Richard Purdie4b23aff2007-05-29 13:31:42 +010048
49 void *oops_buf;
Richard Purdie47c152b2008-01-29 10:21:56 +000050
51 /* writecount and disabling ready are spin lock protected */
52 spinlock_t writecount_lock;
Richard Purdie4b23aff2007-05-29 13:31:42 +010053 int ready;
54 int writecount;
55} oops_cxt;
56
57static void mtdoops_erase_callback(struct erase_info *done)
58{
59 wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv;
60 wake_up(wait_q);
61}
62
63static int mtdoops_erase_block(struct mtd_info *mtd, int offset)
64{
65 struct erase_info erase;
66 DECLARE_WAITQUEUE(wait, current);
67 wait_queue_head_t wait_q;
68 int ret;
69
70 init_waitqueue_head(&wait_q);
71 erase.mtd = mtd;
72 erase.callback = mtdoops_erase_callback;
73 erase.addr = offset;
Richard Purdie79dcd8e2008-01-29 10:25:55 +000074 erase.len = mtd->erasesize;
Richard Purdie4b23aff2007-05-29 13:31:42 +010075 erase.priv = (u_long)&wait_q;
76
77 set_current_state(TASK_INTERRUPTIBLE);
78 add_wait_queue(&wait_q, &wait);
79
80 ret = mtd->erase(mtd, &erase);
81 if (ret) {
82 set_current_state(TASK_RUNNING);
83 remove_wait_queue(&wait_q, &wait);
Adrian Hunter69423d92008-12-10 13:37:21 +000084 printk (KERN_WARNING "mtdoops: erase of region [0x%llx, 0x%llx] "
Richard Purdie4b23aff2007-05-29 13:31:42 +010085 "on \"%s\" failed\n",
Adrian Hunter69423d92008-12-10 13:37:21 +000086 (unsigned long long)erase.addr, (unsigned long long)erase.len, mtd->name);
Richard Purdie4b23aff2007-05-29 13:31:42 +010087 return ret;
88 }
89
90 schedule(); /* Wait for erase to finish. */
91 remove_wait_queue(&wait_q, &wait);
92
93 return 0;
94}
95
Richard Purdie6ce0a852008-01-29 11:27:11 +000096static void mtdoops_inc_counter(struct mtdoops_context *cxt)
Richard Purdie4b23aff2007-05-29 13:31:42 +010097{
98 struct mtd_info *mtd = cxt->mtd;
99 size_t retlen;
100 u32 count;
101 int ret;
102
103 cxt->nextpage++;
Richard Purdieecd5b312008-07-26 09:17:41 +0100104 if (cxt->nextpage >= cxt->oops_pages)
Richard Purdie4b23aff2007-05-29 13:31:42 +0100105 cxt->nextpage = 0;
106 cxt->nextcount++;
107 if (cxt->nextcount == 0xffffffff)
108 cxt->nextcount = 0;
109
110 ret = mtd->read(mtd, cxt->nextpage * OOPS_PAGE_SIZE, 4,
111 &retlen, (u_char *) &count);
Richard Purdie2986bd22008-01-29 11:27:09 +0000112 if ((retlen != 4) || ((ret < 0) && (ret != -EUCLEAN))) {
Andrew Morton68d09b12007-08-10 14:01:31 -0700113 printk(KERN_ERR "mtdoops: Read failure at %d (%td of 4 read)"
Richard Purdie4b23aff2007-05-29 13:31:42 +0100114 ", err %d.\n", cxt->nextpage * OOPS_PAGE_SIZE,
115 retlen, ret);
Richard Purdie6ce0a852008-01-29 11:27:11 +0000116 schedule_work(&cxt->work_erase);
117 return;
Richard Purdie4b23aff2007-05-29 13:31:42 +0100118 }
119
120 /* See if we need to erase the next block */
Richard Purdie6ce0a852008-01-29 11:27:11 +0000121 if (count != 0xffffffff) {
122 schedule_work(&cxt->work_erase);
123 return;
124 }
Richard Purdie4b23aff2007-05-29 13:31:42 +0100125
126 printk(KERN_DEBUG "mtdoops: Ready %d, %d (no erase)\n",
127 cxt->nextpage, cxt->nextcount);
128 cxt->ready = 1;
Richard Purdie4b23aff2007-05-29 13:31:42 +0100129}
130
Richard Purdie6ce0a852008-01-29 11:27:11 +0000131/* Scheduled work - when we can't proceed without erasing a block */
132static void mtdoops_workfunc_erase(struct work_struct *work)
Richard Purdie4b23aff2007-05-29 13:31:42 +0100133{
Richard Purdie6ce0a852008-01-29 11:27:11 +0000134 struct mtdoops_context *cxt =
135 container_of(work, struct mtdoops_context, work_erase);
Richard Purdie4b23aff2007-05-29 13:31:42 +0100136 struct mtd_info *mtd = cxt->mtd;
137 int i = 0, j, ret, mod;
138
139 /* We were unregistered */
140 if (!mtd)
141 return;
142
143 mod = (cxt->nextpage * OOPS_PAGE_SIZE) % mtd->erasesize;
144 if (mod != 0) {
145 cxt->nextpage = cxt->nextpage + ((mtd->erasesize - mod) / OOPS_PAGE_SIZE);
Richard Purdieecd5b312008-07-26 09:17:41 +0100146 if (cxt->nextpage >= cxt->oops_pages)
Richard Purdie4b23aff2007-05-29 13:31:42 +0100147 cxt->nextpage = 0;
148 }
149
Richard Purdie2986bd22008-01-29 11:27:09 +0000150 while (mtd->block_isbad) {
151 ret = mtd->block_isbad(mtd, cxt->nextpage * OOPS_PAGE_SIZE);
152 if (!ret)
153 break;
154 if (ret < 0) {
155 printk(KERN_ERR "mtdoops: block_isbad failed, aborting.\n");
156 return;
157 }
Richard Purdie4b23aff2007-05-29 13:31:42 +0100158badblock:
159 printk(KERN_WARNING "mtdoops: Bad block at %08x\n",
160 cxt->nextpage * OOPS_PAGE_SIZE);
161 i++;
162 cxt->nextpage = cxt->nextpage + (mtd->erasesize / OOPS_PAGE_SIZE);
Richard Purdieecd5b312008-07-26 09:17:41 +0100163 if (cxt->nextpage >= cxt->oops_pages)
Richard Purdie4b23aff2007-05-29 13:31:42 +0100164 cxt->nextpage = 0;
165 if (i == (cxt->oops_pages / (mtd->erasesize / OOPS_PAGE_SIZE))) {
166 printk(KERN_ERR "mtdoops: All blocks bad!\n");
167 return;
168 }
169 }
170
171 for (j = 0, ret = -1; (j < 3) && (ret < 0); j++)
172 ret = mtdoops_erase_block(mtd, cxt->nextpage * OOPS_PAGE_SIZE);
173
Richard Purdie2986bd22008-01-29 11:27:09 +0000174 if (ret >= 0) {
175 printk(KERN_DEBUG "mtdoops: Ready %d, %d \n", cxt->nextpage, cxt->nextcount);
176 cxt->ready = 1;
177 return;
Richard Purdie4b23aff2007-05-29 13:31:42 +0100178 }
179
Richard Purdie2986bd22008-01-29 11:27:09 +0000180 if (mtd->block_markbad && (ret == -EIO)) {
181 ret = mtd->block_markbad(mtd, cxt->nextpage * OOPS_PAGE_SIZE);
182 if (ret < 0) {
183 printk(KERN_ERR "mtdoops: block_markbad failed, aborting.\n");
184 return;
185 }
186 }
187 goto badblock;
Richard Purdie4b23aff2007-05-29 13:31:42 +0100188}
189
Richard Purdie621e4f82008-02-06 10:17:50 +0000190static void mtdoops_write(struct mtdoops_context *cxt, int panic)
Richard Purdie4b23aff2007-05-29 13:31:42 +0100191{
Richard Purdie6ce0a852008-01-29 11:27:11 +0000192 struct mtd_info *mtd = cxt->mtd;
193 size_t retlen;
194 int ret;
Richard Purdie4b23aff2007-05-29 13:31:42 +0100195
Richard Purdie6ce0a852008-01-29 11:27:11 +0000196 if (cxt->writecount < OOPS_PAGE_SIZE)
197 memset(cxt->oops_buf + cxt->writecount, 0xff,
198 OOPS_PAGE_SIZE - cxt->writecount);
Richard Purdie4b23aff2007-05-29 13:31:42 +0100199
Richard Purdie621e4f82008-02-06 10:17:50 +0000200 if (panic)
201 ret = mtd->panic_write(mtd, cxt->nextpage * OOPS_PAGE_SIZE,
202 OOPS_PAGE_SIZE, &retlen, cxt->oops_buf);
203 else
204 ret = mtd->write(mtd, cxt->nextpage * OOPS_PAGE_SIZE,
Richard Purdie6ce0a852008-01-29 11:27:11 +0000205 OOPS_PAGE_SIZE, &retlen, cxt->oops_buf);
206
207 cxt->writecount = 0;
208
209 if ((retlen != OOPS_PAGE_SIZE) || (ret < 0))
210 printk(KERN_ERR "mtdoops: Write failure at %d (%td of %d written), err %d.\n",
211 cxt->nextpage * OOPS_PAGE_SIZE, retlen, OOPS_PAGE_SIZE, ret);
212
213 mtdoops_inc_counter(cxt);
Richard Purdie621e4f82008-02-06 10:17:50 +0000214}
215
216
217static void mtdoops_workfunc_write(struct work_struct *work)
218{
219 struct mtdoops_context *cxt =
220 container_of(work, struct mtdoops_context, work_write);
221
222 mtdoops_write(cxt, 0);
Richard Purdie6ce0a852008-01-29 11:27:11 +0000223}
224
225static void find_next_position(struct mtdoops_context *cxt)
Richard Purdie4b23aff2007-05-29 13:31:42 +0100226{
227 struct mtd_info *mtd = cxt->mtd;
Richard Purdie2986bd22008-01-29 11:27:09 +0000228 int ret, page, maxpos = 0;
Richard Purdief0482ee2008-07-26 09:22:45 +0100229 u32 count[2], maxcount = 0xffffffff;
Richard Purdie4b23aff2007-05-29 13:31:42 +0100230 size_t retlen;
231
232 for (page = 0; page < cxt->oops_pages; page++) {
Richard Purdief0482ee2008-07-26 09:22:45 +0100233 ret = mtd->read(mtd, page * OOPS_PAGE_SIZE, 8, &retlen, (u_char *) &count[0]);
234 if ((retlen != 8) || ((ret < 0) && (ret != -EUCLEAN))) {
235 printk(KERN_ERR "mtdoops: Read failure at %d (%td of 8 read)"
Richard Purdie2986bd22008-01-29 11:27:09 +0000236 ", err %d.\n", page * OOPS_PAGE_SIZE, retlen, ret);
237 continue;
238 }
239
Richard Purdief0482ee2008-07-26 09:22:45 +0100240 if (count[1] != MTDOOPS_KERNMSG_MAGIC)
241 continue;
242 if (count[0] == 0xffffffff)
Richard Purdie4b23aff2007-05-29 13:31:42 +0100243 continue;
244 if (maxcount == 0xffffffff) {
Richard Purdief0482ee2008-07-26 09:22:45 +0100245 maxcount = count[0];
Richard Purdie4b23aff2007-05-29 13:31:42 +0100246 maxpos = page;
Richard Purdief0482ee2008-07-26 09:22:45 +0100247 } else if ((count[0] < 0x40000000) && (maxcount > 0xc0000000)) {
248 maxcount = count[0];
Richard Purdie4b23aff2007-05-29 13:31:42 +0100249 maxpos = page;
Richard Purdief0482ee2008-07-26 09:22:45 +0100250 } else if ((count[0] > maxcount) && (count[0] < 0xc0000000)) {
251 maxcount = count[0];
Richard Purdie4b23aff2007-05-29 13:31:42 +0100252 maxpos = page;
Richard Purdief0482ee2008-07-26 09:22:45 +0100253 } else if ((count[0] > maxcount) && (count[0] > 0xc0000000)
Richard Purdie4b23aff2007-05-29 13:31:42 +0100254 && (maxcount > 0x80000000)) {
Richard Purdief0482ee2008-07-26 09:22:45 +0100255 maxcount = count[0];
Richard Purdie4b23aff2007-05-29 13:31:42 +0100256 maxpos = page;
257 }
258 }
259 if (maxcount == 0xffffffff) {
260 cxt->nextpage = 0;
261 cxt->nextcount = 1;
Richard Purdie43b56932008-07-26 09:25:18 +0100262 schedule_work(&cxt->work_erase);
Richard Purdie6ce0a852008-01-29 11:27:11 +0000263 return;
Richard Purdie4b23aff2007-05-29 13:31:42 +0100264 }
265
266 cxt->nextpage = maxpos;
267 cxt->nextcount = maxcount;
268
Richard Purdie6ce0a852008-01-29 11:27:11 +0000269 mtdoops_inc_counter(cxt);
Richard Purdie4b23aff2007-05-29 13:31:42 +0100270}
271
272
273static void mtdoops_notify_add(struct mtd_info *mtd)
274{
275 struct mtdoops_context *cxt = &oops_cxt;
Richard Purdie4b23aff2007-05-29 13:31:42 +0100276
Adrian Huntere2a0f252009-02-16 18:21:35 +0200277 if (cxt->name && !strcmp(mtd->name, cxt->name))
278 cxt->mtd_index = mtd->index;
279
Richard Purdie4b23aff2007-05-29 13:31:42 +0100280 if ((mtd->index != cxt->mtd_index) || cxt->mtd_index < 0)
281 return;
282
283 if (mtd->size < (mtd->erasesize * 2)) {
284 printk(KERN_ERR "MTD partition %d not big enough for mtdoops\n",
285 mtd->index);
286 return;
287 }
288
Richard Purdie79dcd8e2008-01-29 10:25:55 +0000289 if (mtd->erasesize < OOPS_PAGE_SIZE) {
290 printk(KERN_ERR "Eraseblock size of MTD partition %d too small\n",
291 mtd->index);
292 return;
293 }
294
Richard Purdie4b23aff2007-05-29 13:31:42 +0100295 cxt->mtd = mtd;
Adrian Hunter69423d92008-12-10 13:37:21 +0000296 if (mtd->size > INT_MAX)
297 cxt->oops_pages = INT_MAX / OOPS_PAGE_SIZE;
298 else
299 cxt->oops_pages = (int)mtd->size / OOPS_PAGE_SIZE;
Richard Purdie4b23aff2007-05-29 13:31:42 +0100300
Richard Purdie6ce0a852008-01-29 11:27:11 +0000301 find_next_position(cxt);
Richard Purdie4b23aff2007-05-29 13:31:42 +0100302
Richard Purdie79dcd8e2008-01-29 10:25:55 +0000303 printk(KERN_INFO "mtdoops: Attached to MTD device %d\n", mtd->index);
Richard Purdie4b23aff2007-05-29 13:31:42 +0100304}
305
306static void mtdoops_notify_remove(struct mtd_info *mtd)
307{
308 struct mtdoops_context *cxt = &oops_cxt;
309
310 if ((mtd->index != cxt->mtd_index) || cxt->mtd_index < 0)
311 return;
312
313 cxt->mtd = NULL;
314 flush_scheduled_work();
315}
316
Richard Purdie8691a722007-07-10 20:33:54 +0100317static void mtdoops_console_sync(void)
318{
319 struct mtdoops_context *cxt = &oops_cxt;
320 struct mtd_info *mtd = cxt->mtd;
Richard Purdie47c152b2008-01-29 10:21:56 +0000321 unsigned long flags;
Richard Purdie8691a722007-07-10 20:33:54 +0100322
Richard Purdie6ce0a852008-01-29 11:27:11 +0000323 if (!cxt->ready || !mtd || cxt->writecount == 0)
Richard Purdie8691a722007-07-10 20:33:54 +0100324 return;
325
Richard Purdie47c152b2008-01-29 10:21:56 +0000326 /*
327 * Once ready is 0 and we've held the lock no further writes to the
328 * buffer will happen
329 */
330 spin_lock_irqsave(&cxt->writecount_lock, flags);
331 if (!cxt->ready) {
332 spin_unlock_irqrestore(&cxt->writecount_lock, flags);
333 return;
334 }
Richard Purdie8691a722007-07-10 20:33:54 +0100335 cxt->ready = 0;
Richard Purdie47c152b2008-01-29 10:21:56 +0000336 spin_unlock_irqrestore(&cxt->writecount_lock, flags);
Richard Purdie8691a722007-07-10 20:33:54 +0100337
Richard Purdie621e4f82008-02-06 10:17:50 +0000338 if (mtd->panic_write && in_interrupt())
339 /* Interrupt context, we're going to panic so try and log */
340 mtdoops_write(cxt, 1);
341 else
342 schedule_work(&cxt->work_write);
Richard Purdie8691a722007-07-10 20:33:54 +0100343}
Richard Purdie4b23aff2007-05-29 13:31:42 +0100344
345static void
346mtdoops_console_write(struct console *co, const char *s, unsigned int count)
347{
348 struct mtdoops_context *cxt = co->data;
349 struct mtd_info *mtd = cxt->mtd;
Richard Purdie47c152b2008-01-29 10:21:56 +0000350 unsigned long flags;
Richard Purdie4b23aff2007-05-29 13:31:42 +0100351
Richard Purdie8691a722007-07-10 20:33:54 +0100352 if (!oops_in_progress) {
353 mtdoops_console_sync();
Richard Purdie4b23aff2007-05-29 13:31:42 +0100354 return;
Richard Purdie4b23aff2007-05-29 13:31:42 +0100355 }
356
Richard Purdie8691a722007-07-10 20:33:54 +0100357 if (!cxt->ready || !mtd)
Richard Purdie4b23aff2007-05-29 13:31:42 +0100358 return;
359
Richard Purdie47c152b2008-01-29 10:21:56 +0000360 /* Locking on writecount ensures sequential writes to the buffer */
361 spin_lock_irqsave(&cxt->writecount_lock, flags);
362
363 /* Check ready status didn't change whilst waiting for the lock */
Adrian Hunter48ec00a2009-03-04 09:53:40 +0200364 if (!cxt->ready) {
365 spin_unlock_irqrestore(&cxt->writecount_lock, flags);
Richard Purdie47c152b2008-01-29 10:21:56 +0000366 return;
Adrian Hunter48ec00a2009-03-04 09:53:40 +0200367 }
Richard Purdie47c152b2008-01-29 10:21:56 +0000368
Richard Purdie4b23aff2007-05-29 13:31:42 +0100369 if (cxt->writecount == 0) {
370 u32 *stamp = cxt->oops_buf;
Richard Purdief0482ee2008-07-26 09:22:45 +0100371 *stamp++ = cxt->nextcount;
372 *stamp = MTDOOPS_KERNMSG_MAGIC;
373 cxt->writecount = 8;
Richard Purdie4b23aff2007-05-29 13:31:42 +0100374 }
375
376 if ((count + cxt->writecount) > OOPS_PAGE_SIZE)
377 count = OOPS_PAGE_SIZE - cxt->writecount;
378
Peter Korsgaard235d6202007-11-06 11:56:02 +0100379 memcpy(cxt->oops_buf + cxt->writecount, s, count);
380 cxt->writecount += count;
Richard Purdie47c152b2008-01-29 10:21:56 +0000381
382 spin_unlock_irqrestore(&cxt->writecount_lock, flags);
383
384 if (cxt->writecount == OOPS_PAGE_SIZE)
385 mtdoops_console_sync();
Richard Purdie4b23aff2007-05-29 13:31:42 +0100386}
387
388static int __init mtdoops_console_setup(struct console *co, char *options)
389{
390 struct mtdoops_context *cxt = co->data;
391
Adrian Huntere2a0f252009-02-16 18:21:35 +0200392 if (cxt->mtd_index != -1 || cxt->name)
Richard Purdie4b23aff2007-05-29 13:31:42 +0100393 return -EBUSY;
Adrian Huntere2a0f252009-02-16 18:21:35 +0200394 if (options) {
395 cxt->name = kstrdup(options, GFP_KERNEL);
396 return 0;
397 }
Richard Purdie4b23aff2007-05-29 13:31:42 +0100398 if (co->index == -1)
399 return -EINVAL;
400
401 cxt->mtd_index = co->index;
402 return 0;
403}
404
405static struct mtd_notifier mtdoops_notifier = {
406 .add = mtdoops_notify_add,
407 .remove = mtdoops_notify_remove,
408};
409
410static struct console mtdoops_console = {
411 .name = "ttyMTD",
412 .write = mtdoops_console_write,
413 .setup = mtdoops_console_setup,
Richard Purdie8691a722007-07-10 20:33:54 +0100414 .unblank = mtdoops_console_sync,
Richard Purdie4b23aff2007-05-29 13:31:42 +0100415 .index = -1,
416 .data = &oops_cxt,
417};
418
419static int __init mtdoops_console_init(void)
420{
421 struct mtdoops_context *cxt = &oops_cxt;
422
423 cxt->mtd_index = -1;
424 cxt->oops_buf = vmalloc(OOPS_PAGE_SIZE);
Adrian Hunter48ec00a2009-03-04 09:53:40 +0200425 spin_lock_init(&cxt->writecount_lock);
Richard Purdie4b23aff2007-05-29 13:31:42 +0100426
427 if (!cxt->oops_buf) {
Richard Purdie79dcd8e2008-01-29 10:25:55 +0000428 printk(KERN_ERR "Failed to allocate mtdoops buffer workspace\n");
Richard Purdie4b23aff2007-05-29 13:31:42 +0100429 return -ENOMEM;
430 }
431
Richard Purdie6ce0a852008-01-29 11:27:11 +0000432 INIT_WORK(&cxt->work_erase, mtdoops_workfunc_erase);
433 INIT_WORK(&cxt->work_write, mtdoops_workfunc_write);
Richard Purdie4b23aff2007-05-29 13:31:42 +0100434
435 register_console(&mtdoops_console);
436 register_mtd_user(&mtdoops_notifier);
437 return 0;
438}
439
440static void __exit mtdoops_console_exit(void)
441{
442 struct mtdoops_context *cxt = &oops_cxt;
443
444 unregister_mtd_user(&mtdoops_notifier);
445 unregister_console(&mtdoops_console);
Adrian Huntere2a0f252009-02-16 18:21:35 +0200446 kfree(cxt->name);
Richard Purdie4b23aff2007-05-29 13:31:42 +0100447 vfree(cxt->oops_buf);
448}
449
450
451subsys_initcall(mtdoops_console_init);
452module_exit(mtdoops_console_exit);
453
454MODULE_LICENSE("GPL");
455MODULE_AUTHOR("Richard Purdie <rpurdie@openedhand.com>");
456MODULE_DESCRIPTION("MTD Oops/Panic console logger/driver");