Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Simple MTD partitioning layer | |
3 | * | |
4 | * (C) 2000 Nicolas Pitre <nico@cam.org> | |
5 | * | |
6 | * This code is GPL | |
7 | * | |
8 | * $Id: mtdpart.c,v 1.51 2004/11/16 18:28:59 dwmw2 Exp $ | |
9 | * | |
10 | * 02-21-2002 Thomas Gleixner <gleixner@autronix.de> | |
11 | * added support for read_oob, write_oob | |
12 | */ | |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/types.h> | |
16 | #include <linux/kernel.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/list.h> | |
19 | #include <linux/config.h> | |
20 | #include <linux/kmod.h> | |
21 | #include <linux/mtd/mtd.h> | |
22 | #include <linux/mtd/partitions.h> | |
23 | #include <linux/mtd/compatmac.h> | |
24 | ||
25 | /* Our partition linked list */ | |
26 | static LIST_HEAD(mtd_partitions); | |
27 | ||
28 | /* Our partition node structure */ | |
29 | struct mtd_part { | |
30 | struct mtd_info mtd; | |
31 | struct mtd_info *master; | |
32 | u_int32_t offset; | |
33 | int index; | |
34 | struct list_head list; | |
35 | int registered; | |
36 | }; | |
37 | ||
38 | /* | |
39 | * Given a pointer to the MTD object in the mtd_part structure, we can retrieve | |
40 | * the pointer to that structure with this macro. | |
41 | */ | |
42 | #define PART(x) ((struct mtd_part *)(x)) | |
43 | ||
44 | ||
45 | /* | |
46 | * MTD methods which simply translate the effective address and pass through | |
47 | * to the _real_ device. | |
48 | */ | |
49 | ||
50 | static int part_read (struct mtd_info *mtd, loff_t from, size_t len, | |
51 | size_t *retlen, u_char *buf) | |
52 | { | |
53 | struct mtd_part *part = PART(mtd); | |
54 | if (from >= mtd->size) | |
55 | len = 0; | |
56 | else if (from + len > mtd->size) | |
57 | len = mtd->size - from; | |
58 | if (part->master->read_ecc == NULL) | |
59 | return part->master->read (part->master, from + part->offset, | |
60 | len, retlen, buf); | |
61 | else | |
62 | return part->master->read_ecc (part->master, from + part->offset, | |
63 | len, retlen, buf, NULL, &mtd->oobinfo); | |
64 | } | |
65 | ||
66 | static int part_point (struct mtd_info *mtd, loff_t from, size_t len, | |
67 | size_t *retlen, u_char **buf) | |
68 | { | |
69 | struct mtd_part *part = PART(mtd); | |
70 | if (from >= mtd->size) | |
71 | len = 0; | |
72 | else if (from + len > mtd->size) | |
73 | len = mtd->size - from; | |
74 | return part->master->point (part->master, from + part->offset, | |
75 | len, retlen, buf); | |
76 | } | |
77 | static void part_unpoint (struct mtd_info *mtd, u_char *addr, loff_t from, size_t len) | |
78 | { | |
79 | struct mtd_part *part = PART(mtd); | |
80 | ||
81 | part->master->unpoint (part->master, addr, from + part->offset, len); | |
82 | } | |
83 | ||
84 | ||
85 | static int part_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, | |
86 | size_t *retlen, u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel) | |
87 | { | |
88 | struct mtd_part *part = PART(mtd); | |
89 | if (oobsel == NULL) | |
90 | oobsel = &mtd->oobinfo; | |
91 | if (from >= mtd->size) | |
92 | len = 0; | |
93 | else if (from + len > mtd->size) | |
94 | len = mtd->size - from; | |
95 | return part->master->read_ecc (part->master, from + part->offset, | |
96 | len, retlen, buf, eccbuf, oobsel); | |
97 | } | |
98 | ||
99 | static int part_read_oob (struct mtd_info *mtd, loff_t from, size_t len, | |
100 | size_t *retlen, u_char *buf) | |
101 | { | |
102 | struct mtd_part *part = PART(mtd); | |
103 | if (from >= mtd->size) | |
104 | len = 0; | |
105 | else if (from + len > mtd->size) | |
106 | len = mtd->size - from; | |
107 | return part->master->read_oob (part->master, from + part->offset, | |
108 | len, retlen, buf); | |
109 | } | |
110 | ||
111 | static int part_read_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len, | |
112 | size_t *retlen, u_char *buf) | |
113 | { | |
114 | struct mtd_part *part = PART(mtd); | |
115 | return part->master->read_user_prot_reg (part->master, from, | |
116 | len, retlen, buf); | |
117 | } | |
118 | ||
119 | static int part_read_fact_prot_reg (struct mtd_info *mtd, loff_t from, size_t len, | |
120 | size_t *retlen, u_char *buf) | |
121 | { | |
122 | struct mtd_part *part = PART(mtd); | |
123 | return part->master->read_fact_prot_reg (part->master, from, | |
124 | len, retlen, buf); | |
125 | } | |
126 | ||
127 | static int part_write (struct mtd_info *mtd, loff_t to, size_t len, | |
128 | size_t *retlen, const u_char *buf) | |
129 | { | |
130 | struct mtd_part *part = PART(mtd); | |
131 | if (!(mtd->flags & MTD_WRITEABLE)) | |
132 | return -EROFS; | |
133 | if (to >= mtd->size) | |
134 | len = 0; | |
135 | else if (to + len > mtd->size) | |
136 | len = mtd->size - to; | |
137 | if (part->master->write_ecc == NULL) | |
138 | return part->master->write (part->master, to + part->offset, | |
139 | len, retlen, buf); | |
140 | else | |
141 | return part->master->write_ecc (part->master, to + part->offset, | |
142 | len, retlen, buf, NULL, &mtd->oobinfo); | |
143 | ||
144 | } | |
145 | ||
146 | static int part_write_ecc (struct mtd_info *mtd, loff_t to, size_t len, | |
147 | size_t *retlen, const u_char *buf, | |
148 | u_char *eccbuf, struct nand_oobinfo *oobsel) | |
149 | { | |
150 | struct mtd_part *part = PART(mtd); | |
151 | if (!(mtd->flags & MTD_WRITEABLE)) | |
152 | return -EROFS; | |
153 | if (oobsel == NULL) | |
154 | oobsel = &mtd->oobinfo; | |
155 | if (to >= mtd->size) | |
156 | len = 0; | |
157 | else if (to + len > mtd->size) | |
158 | len = mtd->size - to; | |
159 | return part->master->write_ecc (part->master, to + part->offset, | |
160 | len, retlen, buf, eccbuf, oobsel); | |
161 | } | |
162 | ||
163 | static int part_write_oob (struct mtd_info *mtd, loff_t to, size_t len, | |
164 | size_t *retlen, const u_char *buf) | |
165 | { | |
166 | struct mtd_part *part = PART(mtd); | |
167 | if (!(mtd->flags & MTD_WRITEABLE)) | |
168 | return -EROFS; | |
169 | if (to >= mtd->size) | |
170 | len = 0; | |
171 | else if (to + len > mtd->size) | |
172 | len = mtd->size - to; | |
173 | return part->master->write_oob (part->master, to + part->offset, | |
174 | len, retlen, buf); | |
175 | } | |
176 | ||
177 | static int part_write_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len, | |
178 | size_t *retlen, u_char *buf) | |
179 | { | |
180 | struct mtd_part *part = PART(mtd); | |
181 | return part->master->write_user_prot_reg (part->master, from, | |
182 | len, retlen, buf); | |
183 | } | |
184 | ||
185 | static int part_writev (struct mtd_info *mtd, const struct kvec *vecs, | |
186 | unsigned long count, loff_t to, size_t *retlen) | |
187 | { | |
188 | struct mtd_part *part = PART(mtd); | |
189 | if (!(mtd->flags & MTD_WRITEABLE)) | |
190 | return -EROFS; | |
191 | if (part->master->writev_ecc == NULL) | |
192 | return part->master->writev (part->master, vecs, count, | |
193 | to + part->offset, retlen); | |
194 | else | |
195 | return part->master->writev_ecc (part->master, vecs, count, | |
196 | to + part->offset, retlen, | |
197 | NULL, &mtd->oobinfo); | |
198 | } | |
199 | ||
200 | static int part_readv (struct mtd_info *mtd, struct kvec *vecs, | |
201 | unsigned long count, loff_t from, size_t *retlen) | |
202 | { | |
203 | struct mtd_part *part = PART(mtd); | |
204 | if (part->master->readv_ecc == NULL) | |
205 | return part->master->readv (part->master, vecs, count, | |
206 | from + part->offset, retlen); | |
207 | else | |
208 | return part->master->readv_ecc (part->master, vecs, count, | |
209 | from + part->offset, retlen, | |
210 | NULL, &mtd->oobinfo); | |
211 | } | |
212 | ||
213 | static int part_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, | |
214 | unsigned long count, loff_t to, size_t *retlen, | |
215 | u_char *eccbuf, struct nand_oobinfo *oobsel) | |
216 | { | |
217 | struct mtd_part *part = PART(mtd); | |
218 | if (!(mtd->flags & MTD_WRITEABLE)) | |
219 | return -EROFS; | |
220 | if (oobsel == NULL) | |
221 | oobsel = &mtd->oobinfo; | |
222 | return part->master->writev_ecc (part->master, vecs, count, | |
223 | to + part->offset, retlen, | |
224 | eccbuf, oobsel); | |
225 | } | |
226 | ||
227 | static int part_readv_ecc (struct mtd_info *mtd, struct kvec *vecs, | |
228 | unsigned long count, loff_t from, size_t *retlen, | |
229 | u_char *eccbuf, struct nand_oobinfo *oobsel) | |
230 | { | |
231 | struct mtd_part *part = PART(mtd); | |
232 | if (oobsel == NULL) | |
233 | oobsel = &mtd->oobinfo; | |
234 | return part->master->readv_ecc (part->master, vecs, count, | |
235 | from + part->offset, retlen, | |
236 | eccbuf, oobsel); | |
237 | } | |
238 | ||
239 | static int part_erase (struct mtd_info *mtd, struct erase_info *instr) | |
240 | { | |
241 | struct mtd_part *part = PART(mtd); | |
242 | int ret; | |
243 | if (!(mtd->flags & MTD_WRITEABLE)) | |
244 | return -EROFS; | |
245 | if (instr->addr >= mtd->size) | |
246 | return -EINVAL; | |
247 | instr->addr += part->offset; | |
248 | ret = part->master->erase(part->master, instr); | |
249 | return ret; | |
250 | } | |
251 | ||
252 | void mtd_erase_callback(struct erase_info *instr) | |
253 | { | |
254 | if (instr->mtd->erase == part_erase) { | |
255 | struct mtd_part *part = PART(instr->mtd); | |
256 | ||
257 | if (instr->fail_addr != 0xffffffff) | |
258 | instr->fail_addr -= part->offset; | |
259 | instr->addr -= part->offset; | |
260 | } | |
261 | if (instr->callback) | |
262 | instr->callback(instr); | |
263 | } | |
264 | EXPORT_SYMBOL_GPL(mtd_erase_callback); | |
265 | ||
266 | static int part_lock (struct mtd_info *mtd, loff_t ofs, size_t len) | |
267 | { | |
268 | struct mtd_part *part = PART(mtd); | |
269 | if ((len + ofs) > mtd->size) | |
270 | return -EINVAL; | |
271 | return part->master->lock(part->master, ofs + part->offset, len); | |
272 | } | |
273 | ||
274 | static int part_unlock (struct mtd_info *mtd, loff_t ofs, size_t len) | |
275 | { | |
276 | struct mtd_part *part = PART(mtd); | |
277 | if ((len + ofs) > mtd->size) | |
278 | return -EINVAL; | |
279 | return part->master->unlock(part->master, ofs + part->offset, len); | |
280 | } | |
281 | ||
282 | static void part_sync(struct mtd_info *mtd) | |
283 | { | |
284 | struct mtd_part *part = PART(mtd); | |
285 | part->master->sync(part->master); | |
286 | } | |
287 | ||
288 | static int part_suspend(struct mtd_info *mtd) | |
289 | { | |
290 | struct mtd_part *part = PART(mtd); | |
291 | return part->master->suspend(part->master); | |
292 | } | |
293 | ||
294 | static void part_resume(struct mtd_info *mtd) | |
295 | { | |
296 | struct mtd_part *part = PART(mtd); | |
297 | part->master->resume(part->master); | |
298 | } | |
299 | ||
300 | static int part_block_isbad (struct mtd_info *mtd, loff_t ofs) | |
301 | { | |
302 | struct mtd_part *part = PART(mtd); | |
303 | if (ofs >= mtd->size) | |
304 | return -EINVAL; | |
305 | ofs += part->offset; | |
306 | return part->master->block_isbad(part->master, ofs); | |
307 | } | |
308 | ||
309 | static int part_block_markbad (struct mtd_info *mtd, loff_t ofs) | |
310 | { | |
311 | struct mtd_part *part = PART(mtd); | |
312 | if (!(mtd->flags & MTD_WRITEABLE)) | |
313 | return -EROFS; | |
314 | if (ofs >= mtd->size) | |
315 | return -EINVAL; | |
316 | ofs += part->offset; | |
317 | return part->master->block_markbad(part->master, ofs); | |
318 | } | |
319 | ||
320 | /* | |
321 | * This function unregisters and destroy all slave MTD objects which are | |
322 | * attached to the given master MTD object. | |
323 | */ | |
324 | ||
325 | int del_mtd_partitions(struct mtd_info *master) | |
326 | { | |
327 | struct list_head *node; | |
328 | struct mtd_part *slave; | |
329 | ||
330 | for (node = mtd_partitions.next; | |
331 | node != &mtd_partitions; | |
332 | node = node->next) { | |
333 | slave = list_entry(node, struct mtd_part, list); | |
334 | if (slave->master == master) { | |
335 | struct list_head *prev = node->prev; | |
336 | __list_del(prev, node->next); | |
337 | if(slave->registered) | |
338 | del_mtd_device(&slave->mtd); | |
339 | kfree(slave); | |
340 | node = prev; | |
341 | } | |
342 | } | |
343 | ||
344 | return 0; | |
345 | } | |
346 | ||
347 | /* | |
348 | * This function, given a master MTD object and a partition table, creates | |
349 | * and registers slave MTD objects which are bound to the master according to | |
350 | * the partition definitions. | |
351 | * (Q: should we register the master MTD object as well?) | |
352 | */ | |
353 | ||
354 | int add_mtd_partitions(struct mtd_info *master, | |
355 | const struct mtd_partition *parts, | |
356 | int nbparts) | |
357 | { | |
358 | struct mtd_part *slave; | |
359 | u_int32_t cur_offset = 0; | |
360 | int i; | |
361 | ||
362 | printk (KERN_NOTICE "Creating %d MTD partitions on \"%s\":\n", nbparts, master->name); | |
363 | ||
364 | for (i = 0; i < nbparts; i++) { | |
365 | ||
366 | /* allocate the partition structure */ | |
367 | slave = kmalloc (sizeof(*slave), GFP_KERNEL); | |
368 | if (!slave) { | |
369 | printk ("memory allocation error while creating partitions for \"%s\"\n", | |
370 | master->name); | |
371 | del_mtd_partitions(master); | |
372 | return -ENOMEM; | |
373 | } | |
374 | memset(slave, 0, sizeof(*slave)); | |
375 | list_add(&slave->list, &mtd_partitions); | |
376 | ||
377 | /* set up the MTD object for this partition */ | |
378 | slave->mtd.type = master->type; | |
379 | slave->mtd.flags = master->flags & ~parts[i].mask_flags; | |
380 | slave->mtd.size = parts[i].size; | |
381 | slave->mtd.oobblock = master->oobblock; | |
382 | slave->mtd.oobsize = master->oobsize; | |
383 | slave->mtd.ecctype = master->ecctype; | |
384 | slave->mtd.eccsize = master->eccsize; | |
385 | ||
386 | slave->mtd.name = parts[i].name; | |
387 | slave->mtd.bank_size = master->bank_size; | |
388 | slave->mtd.owner = master->owner; | |
389 | ||
390 | slave->mtd.read = part_read; | |
391 | slave->mtd.write = part_write; | |
392 | ||
393 | if(master->point && master->unpoint){ | |
394 | slave->mtd.point = part_point; | |
395 | slave->mtd.unpoint = part_unpoint; | |
396 | } | |
397 | ||
398 | if (master->read_ecc) | |
399 | slave->mtd.read_ecc = part_read_ecc; | |
400 | if (master->write_ecc) | |
401 | slave->mtd.write_ecc = part_write_ecc; | |
402 | if (master->read_oob) | |
403 | slave->mtd.read_oob = part_read_oob; | |
404 | if (master->write_oob) | |
405 | slave->mtd.write_oob = part_write_oob; | |
406 | if(master->read_user_prot_reg) | |
407 | slave->mtd.read_user_prot_reg = part_read_user_prot_reg; | |
408 | if(master->read_fact_prot_reg) | |
409 | slave->mtd.read_fact_prot_reg = part_read_fact_prot_reg; | |
410 | if(master->write_user_prot_reg) | |
411 | slave->mtd.write_user_prot_reg = part_write_user_prot_reg; | |
412 | if (master->sync) | |
413 | slave->mtd.sync = part_sync; | |
414 | if (!i && master->suspend && master->resume) { | |
415 | slave->mtd.suspend = part_suspend; | |
416 | slave->mtd.resume = part_resume; | |
417 | } | |
418 | if (master->writev) | |
419 | slave->mtd.writev = part_writev; | |
420 | if (master->readv) | |
421 | slave->mtd.readv = part_readv; | |
422 | if (master->writev_ecc) | |
423 | slave->mtd.writev_ecc = part_writev_ecc; | |
424 | if (master->readv_ecc) | |
425 | slave->mtd.readv_ecc = part_readv_ecc; | |
426 | if (master->lock) | |
427 | slave->mtd.lock = part_lock; | |
428 | if (master->unlock) | |
429 | slave->mtd.unlock = part_unlock; | |
430 | if (master->block_isbad) | |
431 | slave->mtd.block_isbad = part_block_isbad; | |
432 | if (master->block_markbad) | |
433 | slave->mtd.block_markbad = part_block_markbad; | |
434 | slave->mtd.erase = part_erase; | |
435 | slave->master = master; | |
436 | slave->offset = parts[i].offset; | |
437 | slave->index = i; | |
438 | ||
439 | if (slave->offset == MTDPART_OFS_APPEND) | |
440 | slave->offset = cur_offset; | |
441 | if (slave->offset == MTDPART_OFS_NXTBLK) { | |
442 | u_int32_t emask = master->erasesize-1; | |
443 | slave->offset = (cur_offset + emask) & ~emask; | |
444 | if (slave->offset != cur_offset) { | |
445 | printk(KERN_NOTICE "Moving partition %d: " | |
446 | "0x%08x -> 0x%08x\n", i, | |
447 | cur_offset, slave->offset); | |
448 | } | |
449 | } | |
450 | if (slave->mtd.size == MTDPART_SIZ_FULL) | |
451 | slave->mtd.size = master->size - slave->offset; | |
452 | cur_offset = slave->offset + slave->mtd.size; | |
453 | ||
454 | printk (KERN_NOTICE "0x%08x-0x%08x : \"%s\"\n", slave->offset, | |
455 | slave->offset + slave->mtd.size, slave->mtd.name); | |
456 | ||
457 | /* let's do some sanity checks */ | |
458 | if (slave->offset >= master->size) { | |
459 | /* let's register it anyway to preserve ordering */ | |
460 | slave->offset = 0; | |
461 | slave->mtd.size = 0; | |
462 | printk ("mtd: partition \"%s\" is out of reach -- disabled\n", | |
463 | parts[i].name); | |
464 | } | |
465 | if (slave->offset + slave->mtd.size > master->size) { | |
466 | slave->mtd.size = master->size - slave->offset; | |
467 | printk ("mtd: partition \"%s\" extends beyond the end of device \"%s\" -- size truncated to %#x\n", | |
468 | parts[i].name, master->name, slave->mtd.size); | |
469 | } | |
470 | if (master->numeraseregions>1) { | |
471 | /* Deal with variable erase size stuff */ | |
472 | int i; | |
473 | struct mtd_erase_region_info *regions = master->eraseregions; | |
474 | ||
475 | /* Find the first erase regions which is part of this partition. */ | |
476 | for (i=0; i < master->numeraseregions && slave->offset >= regions[i].offset; i++) | |
477 | ; | |
478 | ||
479 | for (i--; i < master->numeraseregions && slave->offset + slave->mtd.size > regions[i].offset; i++) { | |
480 | if (slave->mtd.erasesize < regions[i].erasesize) { | |
481 | slave->mtd.erasesize = regions[i].erasesize; | |
482 | } | |
483 | } | |
484 | } else { | |
485 | /* Single erase size */ | |
486 | slave->mtd.erasesize = master->erasesize; | |
487 | } | |
488 | ||
489 | if ((slave->mtd.flags & MTD_WRITEABLE) && | |
490 | (slave->offset % slave->mtd.erasesize)) { | |
491 | /* Doesn't start on a boundary of major erase size */ | |
492 | /* FIXME: Let it be writable if it is on a boundary of _minor_ erase size though */ | |
493 | slave->mtd.flags &= ~MTD_WRITEABLE; | |
494 | printk ("mtd: partition \"%s\" doesn't start on an erase block boundary -- force read-only\n", | |
495 | parts[i].name); | |
496 | } | |
497 | if ((slave->mtd.flags & MTD_WRITEABLE) && | |
498 | (slave->mtd.size % slave->mtd.erasesize)) { | |
499 | slave->mtd.flags &= ~MTD_WRITEABLE; | |
500 | printk ("mtd: partition \"%s\" doesn't end on an erase block -- force read-only\n", | |
501 | parts[i].name); | |
502 | } | |
503 | ||
504 | /* copy oobinfo from master */ | |
505 | memcpy(&slave->mtd.oobinfo, &master->oobinfo, sizeof(slave->mtd.oobinfo)); | |
506 | ||
507 | if(parts[i].mtdp) | |
508 | { /* store the object pointer (caller may or may not register it */ | |
509 | *parts[i].mtdp = &slave->mtd; | |
510 | slave->registered = 0; | |
511 | } | |
512 | else | |
513 | { | |
514 | /* register our partition */ | |
515 | add_mtd_device(&slave->mtd); | |
516 | slave->registered = 1; | |
517 | } | |
518 | } | |
519 | ||
520 | return 0; | |
521 | } | |
522 | ||
523 | EXPORT_SYMBOL(add_mtd_partitions); | |
524 | EXPORT_SYMBOL(del_mtd_partitions); | |
525 | ||
526 | static DEFINE_SPINLOCK(part_parser_lock); | |
527 | static LIST_HEAD(part_parsers); | |
528 | ||
529 | static struct mtd_part_parser *get_partition_parser(const char *name) | |
530 | { | |
531 | struct list_head *this; | |
532 | void *ret = NULL; | |
533 | spin_lock(&part_parser_lock); | |
534 | ||
535 | list_for_each(this, &part_parsers) { | |
536 | struct mtd_part_parser *p = list_entry(this, struct mtd_part_parser, list); | |
537 | ||
538 | if (!strcmp(p->name, name) && try_module_get(p->owner)) { | |
539 | ret = p; | |
540 | break; | |
541 | } | |
542 | } | |
543 | spin_unlock(&part_parser_lock); | |
544 | ||
545 | return ret; | |
546 | } | |
547 | ||
548 | int register_mtd_parser(struct mtd_part_parser *p) | |
549 | { | |
550 | spin_lock(&part_parser_lock); | |
551 | list_add(&p->list, &part_parsers); | |
552 | spin_unlock(&part_parser_lock); | |
553 | ||
554 | return 0; | |
555 | } | |
556 | ||
557 | int deregister_mtd_parser(struct mtd_part_parser *p) | |
558 | { | |
559 | spin_lock(&part_parser_lock); | |
560 | list_del(&p->list); | |
561 | spin_unlock(&part_parser_lock); | |
562 | return 0; | |
563 | } | |
564 | ||
565 | int parse_mtd_partitions(struct mtd_info *master, const char **types, | |
566 | struct mtd_partition **pparts, unsigned long origin) | |
567 | { | |
568 | struct mtd_part_parser *parser; | |
569 | int ret = 0; | |
570 | ||
571 | for ( ; ret <= 0 && *types; types++) { | |
572 | parser = get_partition_parser(*types); | |
573 | #ifdef CONFIG_KMOD | |
574 | if (!parser && !request_module("%s", *types)) | |
575 | parser = get_partition_parser(*types); | |
576 | #endif | |
577 | if (!parser) { | |
578 | printk(KERN_NOTICE "%s partition parsing not available\n", | |
579 | *types); | |
580 | continue; | |
581 | } | |
582 | ret = (*parser->parse_fn)(master, pparts, origin); | |
583 | if (ret > 0) { | |
584 | printk(KERN_NOTICE "%d %s partitions found on MTD device %s\n", | |
585 | ret, parser->name, master->name); | |
586 | } | |
587 | put_partition_parser(parser); | |
588 | } | |
589 | return ret; | |
590 | } | |
591 | ||
592 | EXPORT_SYMBOL_GPL(parse_mtd_partitions); | |
593 | EXPORT_SYMBOL_GPL(register_mtd_parser); | |
594 | EXPORT_SYMBOL_GPL(deregister_mtd_parser); | |
595 | ||
596 | MODULE_LICENSE("GPL"); | |
597 | MODULE_AUTHOR("Nicolas Pitre <nico@cam.org>"); | |
598 | MODULE_DESCRIPTION("Generic support for partitioning of MTD devices"); | |
599 |