55 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_cls_suspend()  local
57 	return mtd ? mtd_suspend(mtd) : 0;  in mtd_cls_suspend()
62 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_cls_resume()  local
64 	if (mtd)  in mtd_cls_resume()
65 		mtd_resume(mtd);  in mtd_cls_resume()
104 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_release()  local
105 	dev_t index = MTD_DEVT(mtd->index);  in mtd_release()
114 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_type_show()  local
117 	switch (mtd->type) {  in mtd_type_show()
153 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_flags_show()  local
155 	return snprintf(buf, PAGE_SIZE, "0x%lx\n", (unsigned long)mtd->flags);  in mtd_flags_show()
163 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_size_show()  local
166 		(unsigned long long)mtd->size);  in mtd_size_show()
174 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_erasesize_show()  local
176 	return snprintf(buf, PAGE_SIZE, "%lu\n", (unsigned long)mtd->erasesize);  in mtd_erasesize_show()
184 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_writesize_show()  local
186 	return snprintf(buf, PAGE_SIZE, "%lu\n", (unsigned long)mtd->writesize);  in mtd_writesize_show()
194 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_subpagesize_show()  local
195 	unsigned int subpagesize = mtd->writesize >> mtd->subpage_sft;  in mtd_subpagesize_show()
205 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_oobsize_show()  local
207 	return snprintf(buf, PAGE_SIZE, "%lu\n", (unsigned long)mtd->oobsize);  in mtd_oobsize_show()
215 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_numeraseregions_show()  local
217 	return snprintf(buf, PAGE_SIZE, "%u\n", mtd->numeraseregions);  in mtd_numeraseregions_show()
226 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_name_show()  local
228 	return snprintf(buf, PAGE_SIZE, "%s\n", mtd->name);  in mtd_name_show()
236 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_ecc_strength_show()  local
238 	return snprintf(buf, PAGE_SIZE, "%u\n", mtd->ecc_strength);  in mtd_ecc_strength_show()
246 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_bitflip_threshold_show()  local
248 	return snprintf(buf, PAGE_SIZE, "%u\n", mtd->bitflip_threshold);  in mtd_bitflip_threshold_show()
255 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_bitflip_threshold_store()  local
263 	mtd->bitflip_threshold = bitflip_threshold;  in mtd_bitflip_threshold_store()
273 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_ecc_step_size_show()  local
275 	return snprintf(buf, PAGE_SIZE, "%u\n", mtd->ecc_step_size);  in mtd_ecc_step_size_show()
283 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_ecc_stats_corrected_show()  local
284 	struct mtd_ecc_stats *ecc_stats = &mtd->ecc_stats;  in mtd_ecc_stats_corrected_show()
294 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_ecc_stats_errors_show()  local
295 	struct mtd_ecc_stats *ecc_stats = &mtd->ecc_stats;  in mtd_ecc_stats_errors_show()
304 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_badblocks_show()  local
305 	struct mtd_ecc_stats *ecc_stats = &mtd->ecc_stats;  in mtd_badblocks_show()
314 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_bbtblocks_show()  local
315 	struct mtd_ecc_stats *ecc_stats = &mtd->ecc_stats;  in mtd_bbtblocks_show()
340 ATTRIBUTE_GROUPS(mtd);
349 unsigned mtd_mmap_capabilities(struct mtd_info *mtd)  in mtd_mmap_capabilities()  argument
351 	switch (mtd->type) {  in mtd_mmap_capabilities()
368 	struct mtd_info *mtd;  in mtd_reboot_notifier()  local
370 	mtd = container_of(n, struct mtd_info, reboot_notifier);  in mtd_reboot_notifier()
371 	mtd->_reboot(mtd);  in mtd_reboot_notifier()
385 int add_mtd_device(struct mtd_info *mtd)  in add_mtd_device()  argument
395 	if (WARN_ONCE(mtd->backing_dev_info, "MTD already registered\n"))  in add_mtd_device()
398 	mtd->backing_dev_info = &mtd_bdi;  in add_mtd_device()
400 	BUG_ON(mtd->writesize == 0);  in add_mtd_device()
403 	i = idr_alloc(&mtd_idr, mtd, 0, 0, GFP_KERNEL);  in add_mtd_device()
409 	mtd->index = i;  in add_mtd_device()
410 	mtd->usecount = 0;  in add_mtd_device()
413 	if (mtd->bitflip_threshold == 0)  in add_mtd_device()
414 		mtd->bitflip_threshold = mtd->ecc_strength;  in add_mtd_device()
416 	if (is_power_of_2(mtd->erasesize))  in add_mtd_device()
417 		mtd->erasesize_shift = ffs(mtd->erasesize) - 1;  in add_mtd_device()
419 		mtd->erasesize_shift = 0;  in add_mtd_device()
421 	if (is_power_of_2(mtd->writesize))  in add_mtd_device()
422 		mtd->writesize_shift = ffs(mtd->writesize) - 1;  in add_mtd_device()
424 		mtd->writesize_shift = 0;  in add_mtd_device()
426 	mtd->erasesize_mask = (1 << mtd->erasesize_shift) - 1;  in add_mtd_device()
427 	mtd->writesize_mask = (1 << mtd->writesize_shift) - 1;  in add_mtd_device()
430 	if ((mtd->flags & MTD_WRITEABLE) && (mtd->flags & MTD_POWERUP_LOCK)) {  in add_mtd_device()
431 		error = mtd_unlock(mtd, 0, mtd->size);  in add_mtd_device()
435 			       mtd->name);  in add_mtd_device()
443 	mtd->dev.type = &mtd_devtype;  in add_mtd_device()
444 	mtd->dev.class = &mtd_class;  in add_mtd_device()
445 	mtd->dev.devt = MTD_DEVT(i);  in add_mtd_device()
446 	dev_set_name(&mtd->dev, "mtd%d", i);  in add_mtd_device()
447 	dev_set_drvdata(&mtd->dev, mtd);  in add_mtd_device()
448 	error = device_register(&mtd->dev);  in add_mtd_device()
452 	device_create(&mtd_class, mtd->dev.parent, MTD_DEVT(i) + 1, NULL,  in add_mtd_device()
455 	pr_debug("mtd: Giving out device %d to %s\n", i, mtd->name);  in add_mtd_device()
459 		not->add(mtd);  in add_mtd_device()
486 int del_mtd_device(struct mtd_info *mtd)  in del_mtd_device()  argument
493 	if (idr_find(&mtd_idr, mtd->index) != mtd) {  in del_mtd_device()
501 		not->remove(mtd);  in del_mtd_device()
503 	if (mtd->usecount) {  in del_mtd_device()
505 		       mtd->index, mtd->name, mtd->usecount);  in del_mtd_device()
508 		device_unregister(&mtd->dev);  in del_mtd_device()
510 		idr_remove(&mtd_idr, mtd->index);  in del_mtd_device()
521 static int mtd_add_device_partitions(struct mtd_info *mtd,  in mtd_add_device_partitions()  argument
528 		ret = add_mtd_device(mtd);  in mtd_add_device_partitions()
534 		ret = add_mtd_partitions(mtd, real_parts, nbparts);  in mtd_add_device_partitions()
536 			del_mtd_device(mtd);  in mtd_add_device_partitions()
547 static void mtd_set_dev_defaults(struct mtd_info *mtd)  in mtd_set_dev_defaults()  argument
549 	if (mtd->dev.parent) {  in mtd_set_dev_defaults()
550 		if (!mtd->owner && mtd->dev.parent->driver)  in mtd_set_dev_defaults()
551 			mtd->owner = mtd->dev.parent->driver->owner;  in mtd_set_dev_defaults()
552 		if (!mtd->name)  in mtd_set_dev_defaults()
553 			mtd->name = dev_name(mtd->dev.parent);  in mtd_set_dev_defaults()
588 int mtd_device_parse_register(struct mtd_info *mtd, const char * const *types,  in mtd_device_parse_register()  argument
596 	mtd_set_dev_defaults(mtd);  in mtd_device_parse_register()
598 	ret = parse_mtd_partitions(mtd, types, &real_parts, parser_data);  in mtd_device_parse_register()
615 	ret = mtd_add_device_partitions(mtd, real_parts, ret);  in mtd_device_parse_register()
627 	WARN_ONCE(mtd->_reboot && mtd->reboot_notifier.notifier_call,  in mtd_device_parse_register()
629 	if (mtd->_reboot && !mtd->reboot_notifier.notifier_call) {  in mtd_device_parse_register()
630 		mtd->reboot_notifier.notifier_call = mtd_reboot_notifier;  in mtd_device_parse_register()
631 		register_reboot_notifier(&mtd->reboot_notifier);  in mtd_device_parse_register()
674 	struct mtd_info *mtd;  in register_mtd_user()  local
682 	mtd_for_each_device(mtd)  in register_mtd_user()
683 		new->add(mtd);  in register_mtd_user()
700 	struct mtd_info *mtd;  in unregister_mtd_user()  local
706 	mtd_for_each_device(mtd)  in unregister_mtd_user()
707 		old->remove(mtd);  in unregister_mtd_user()
726 struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num)  in get_mtd_device()  argument
735 			if (other == mtd) {  in get_mtd_device()
736 				ret = mtd;  in get_mtd_device()
742 		if (mtd && mtd != ret)  in get_mtd_device()
761 int __get_mtd_device(struct mtd_info *mtd)  in __get_mtd_device()  argument
765 	if (!try_module_get(mtd->owner))  in __get_mtd_device()
768 	if (mtd->_get_device) {  in __get_mtd_device()
769 		err = mtd->_get_device(mtd);  in __get_mtd_device()
772 			module_put(mtd->owner);  in __get_mtd_device()
776 	mtd->usecount++;  in __get_mtd_device()
792 	struct mtd_info *mtd = NULL, *other;  in get_mtd_device_nm()  local
798 			mtd = other;  in get_mtd_device_nm()
803 	if (!mtd)  in get_mtd_device_nm()
806 	err = __get_mtd_device(mtd);  in get_mtd_device_nm()
811 	return mtd;  in get_mtd_device_nm()
819 void put_mtd_device(struct mtd_info *mtd)  in put_mtd_device()  argument
822 	__put_mtd_device(mtd);  in put_mtd_device()
828 void __put_mtd_device(struct mtd_info *mtd)  in __put_mtd_device()  argument
830 	--mtd->usecount;  in __put_mtd_device()
831 	BUG_ON(mtd->usecount < 0);  in __put_mtd_device()
833 	if (mtd->_put_device)  in __put_mtd_device()
834 		mtd->_put_device(mtd);  in __put_mtd_device()
836 	module_put(mtd->owner);  in __put_mtd_device()
847 int mtd_erase(struct mtd_info *mtd, struct erase_info *instr)  in mtd_erase()  argument
849 	if (instr->addr >= mtd->size || instr->len > mtd->size - instr->addr)  in mtd_erase()
851 	if (!(mtd->flags & MTD_WRITEABLE))  in mtd_erase()
859 	return mtd->_erase(mtd, instr);  in mtd_erase()
866 int mtd_point(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,  in mtd_point()  argument
873 	if (!mtd->_point)  in mtd_point()
875 	if (from < 0 || from >= mtd->size || len > mtd->size - from)  in mtd_point()
879 	return mtd->_point(mtd, from, len, retlen, virt, phys);  in mtd_point()
884 int mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len)  in mtd_unpoint()  argument
886 	if (!mtd->_point)  in mtd_unpoint()
888 	if (from < 0 || from >= mtd->size || len > mtd->size - from)  in mtd_unpoint()
892 	return mtd->_unpoint(mtd, from, len);  in mtd_unpoint()
901 unsigned long mtd_get_unmapped_area(struct mtd_info *mtd, unsigned long len,  in mtd_get_unmapped_area()  argument
904 	if (!mtd->_get_unmapped_area)  in mtd_get_unmapped_area()
906 	if (offset >= mtd->size || len > mtd->size - offset)  in mtd_get_unmapped_area()
908 	return mtd->_get_unmapped_area(mtd, len, offset, flags);  in mtd_get_unmapped_area()
912 int mtd_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,  in mtd_read()  argument
917 	if (from < 0 || from >= mtd->size || len > mtd->size - from)  in mtd_read()
927 	ret_code = mtd->_read(mtd, from, len, retlen, buf);  in mtd_read()
930 	if (mtd->ecc_strength == 0)  in mtd_read()
932 	return ret_code >= mtd->bitflip_threshold ? -EUCLEAN : 0;  in mtd_read()
936 int mtd_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen,  in mtd_write()  argument
940 	if (to < 0 || to >= mtd->size || len > mtd->size - to)  in mtd_write()
942 	if (!mtd->_write || !(mtd->flags & MTD_WRITEABLE))  in mtd_write()
946 	return mtd->_write(mtd, to, len, retlen, buf);  in mtd_write()
957 int mtd_panic_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen,  in mtd_panic_write()  argument
961 	if (!mtd->_panic_write)  in mtd_panic_write()
963 	if (to < 0 || to >= mtd->size || len > mtd->size - to)  in mtd_panic_write()
965 	if (!(mtd->flags & MTD_WRITEABLE))  in mtd_panic_write()
969 	return mtd->_panic_write(mtd, to, len, retlen, buf);  in mtd_panic_write()
973 int mtd_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops)  in mtd_read_oob()  argument
977 	if (!mtd->_read_oob)  in mtd_read_oob()
985 	ret_code = mtd->_read_oob(mtd, from, ops);  in mtd_read_oob()
988 	if (mtd->ecc_strength == 0)  in mtd_read_oob()
990 	return ret_code >= mtd->bitflip_threshold ? -EUCLEAN : 0;  in mtd_read_oob()
999 int mtd_get_fact_prot_info(struct mtd_info *mtd, size_t len, size_t *retlen,  in mtd_get_fact_prot_info()  argument
1002 	if (!mtd->_get_fact_prot_info)  in mtd_get_fact_prot_info()
1006 	return mtd->_get_fact_prot_info(mtd, len, retlen, buf);  in mtd_get_fact_prot_info()
1010 int mtd_read_fact_prot_reg(struct mtd_info *mtd, loff_t from, size_t len,  in mtd_read_fact_prot_reg()  argument
1014 	if (!mtd->_read_fact_prot_reg)  in mtd_read_fact_prot_reg()
1018 	return mtd->_read_fact_prot_reg(mtd, from, len, retlen, buf);  in mtd_read_fact_prot_reg()
1022 int mtd_get_user_prot_info(struct mtd_info *mtd, size_t len, size_t *retlen,  in mtd_get_user_prot_info()  argument
1025 	if (!mtd->_get_user_prot_info)  in mtd_get_user_prot_info()
1029 	return mtd->_get_user_prot_info(mtd, len, retlen, buf);  in mtd_get_user_prot_info()
1033 int mtd_read_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len,  in mtd_read_user_prot_reg()  argument
1037 	if (!mtd->_read_user_prot_reg)  in mtd_read_user_prot_reg()
1041 	return mtd->_read_user_prot_reg(mtd, from, len, retlen, buf);  in mtd_read_user_prot_reg()
1045 int mtd_write_user_prot_reg(struct mtd_info *mtd, loff_t to, size_t len,  in mtd_write_user_prot_reg()  argument
1051 	if (!mtd->_write_user_prot_reg)  in mtd_write_user_prot_reg()
1055 	ret = mtd->_write_user_prot_reg(mtd, to, len, retlen, buf);  in mtd_write_user_prot_reg()
1067 int mtd_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len)  in mtd_lock_user_prot_reg()  argument
1069 	if (!mtd->_lock_user_prot_reg)  in mtd_lock_user_prot_reg()
1073 	return mtd->_lock_user_prot_reg(mtd, from, len);  in mtd_lock_user_prot_reg()
1078 int mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)  in mtd_lock()  argument
1080 	if (!mtd->_lock)  in mtd_lock()
1082 	if (ofs < 0 || ofs >= mtd->size || len > mtd->size - ofs)  in mtd_lock()
1086 	return mtd->_lock(mtd, ofs, len);  in mtd_lock()
1090 int mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)  in mtd_unlock()  argument
1092 	if (!mtd->_unlock)  in mtd_unlock()
1094 	if (ofs < 0 || ofs >= mtd->size || len > mtd->size - ofs)  in mtd_unlock()
1098 	return mtd->_unlock(mtd, ofs, len);  in mtd_unlock()
1102 int mtd_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len)  in mtd_is_locked()  argument
1104 	if (!mtd->_is_locked)  in mtd_is_locked()
1106 	if (ofs < 0 || ofs >= mtd->size || len > mtd->size - ofs)  in mtd_is_locked()
1110 	return mtd->_is_locked(mtd, ofs, len);  in mtd_is_locked()
1114 int mtd_block_isreserved(struct mtd_info *mtd, loff_t ofs)  in mtd_block_isreserved()  argument
1116 	if (ofs < 0 || ofs >= mtd->size)  in mtd_block_isreserved()
1118 	if (!mtd->_block_isreserved)  in mtd_block_isreserved()
1120 	return mtd->_block_isreserved(mtd, ofs);  in mtd_block_isreserved()
1124 int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs)  in mtd_block_isbad()  argument
1126 	if (ofs < 0 || ofs >= mtd->size)  in mtd_block_isbad()
1128 	if (!mtd->_block_isbad)  in mtd_block_isbad()
1130 	return mtd->_block_isbad(mtd, ofs);  in mtd_block_isbad()
1134 int mtd_block_markbad(struct mtd_info *mtd, loff_t ofs)  in mtd_block_markbad()  argument
1136 	if (!mtd->_block_markbad)  in mtd_block_markbad()
1138 	if (ofs < 0 || ofs >= mtd->size)  in mtd_block_markbad()
1140 	if (!(mtd->flags & MTD_WRITEABLE))  in mtd_block_markbad()
1142 	return mtd->_block_markbad(mtd, ofs);  in mtd_block_markbad()
1157 static int default_mtd_writev(struct mtd_info *mtd, const struct kvec *vecs,  in default_mtd_writev()  argument
1167 		ret = mtd_write(mtd, to, vecs[i].iov_len, &thislen,  in default_mtd_writev()
1189 int mtd_writev(struct mtd_info *mtd, const struct kvec *vecs,  in mtd_writev()  argument
1193 	if (!(mtd->flags & MTD_WRITEABLE))  in mtd_writev()
1195 	if (!mtd->_writev)  in mtd_writev()
1196 		return default_mtd_writev(mtd, vecs, count, to, retlen);  in mtd_writev()
1197 	return mtd->_writev(mtd, vecs, count, to, retlen);  in mtd_writev()
1225 void *mtd_kmalloc_up_to(const struct mtd_info *mtd, size_t *size)  in mtd_kmalloc_up_to()  argument
1228 	size_t min_alloc = max_t(size_t, mtd->writesize, PAGE_SIZE);  in mtd_kmalloc_up_to()
1239 		*size = ALIGN(*size, mtd->writesize);  in mtd_kmalloc_up_to()
1257 	struct mtd_info *mtd;  in mtd_proc_show()  local
1261 	mtd_for_each_device(mtd) {  in mtd_proc_show()
1263 			   mtd->index, (unsigned long long)mtd->size,  in mtd_proc_show()
1264 			   mtd->erasesize, mtd->name);  in mtd_proc_show()