84 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_release()  local
85 	dev_t index = MTD_DEVT(mtd->index);  in mtd_release()
93 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_cls_suspend()  local
95 	return mtd ? mtd_suspend(mtd) : 0;  in mtd_cls_suspend()
100 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_cls_resume()  local
102 	if (mtd)  in mtd_cls_resume()
103 		mtd_resume(mtd);  in mtd_cls_resume()
110 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_type_show()  local
113 	switch (mtd->type) {  in mtd_type_show()
149 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_flags_show()  local
151 	return snprintf(buf, PAGE_SIZE, "0x%lx\n", (unsigned long)mtd->flags);  in mtd_flags_show()
159 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_size_show()  local
162 		(unsigned long long)mtd->size);  in mtd_size_show()
170 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_erasesize_show()  local
172 	return snprintf(buf, PAGE_SIZE, "%lu\n", (unsigned long)mtd->erasesize);  in mtd_erasesize_show()
180 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_writesize_show()  local
182 	return snprintf(buf, PAGE_SIZE, "%lu\n", (unsigned long)mtd->writesize);  in mtd_writesize_show()
190 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_subpagesize_show()  local
191 	unsigned int subpagesize = mtd->writesize >> mtd->subpage_sft;  in mtd_subpagesize_show()
201 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_oobsize_show()  local
203 	return snprintf(buf, PAGE_SIZE, "%lu\n", (unsigned long)mtd->oobsize);  in mtd_oobsize_show()
211 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_numeraseregions_show()  local
213 	return snprintf(buf, PAGE_SIZE, "%u\n", mtd->numeraseregions);  in mtd_numeraseregions_show()
222 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_name_show()  local
224 	return snprintf(buf, PAGE_SIZE, "%s\n", mtd->name);  in mtd_name_show()
232 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_ecc_strength_show()  local
234 	return snprintf(buf, PAGE_SIZE, "%u\n", mtd->ecc_strength);  in mtd_ecc_strength_show()
242 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_bitflip_threshold_show()  local
244 	return snprintf(buf, PAGE_SIZE, "%u\n", mtd->bitflip_threshold);  in mtd_bitflip_threshold_show()
251 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_bitflip_threshold_store()  local
259 	mtd->bitflip_threshold = bitflip_threshold;  in mtd_bitflip_threshold_store()
269 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_ecc_step_size_show()  local
271 	return snprintf(buf, PAGE_SIZE, "%u\n", mtd->ecc_step_size);  in mtd_ecc_step_size_show()
279 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_ecc_stats_corrected_show()  local
280 	struct mtd_ecc_stats *ecc_stats = &mtd->ecc_stats;  in mtd_ecc_stats_corrected_show()
290 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_ecc_stats_errors_show()  local
291 	struct mtd_ecc_stats *ecc_stats = &mtd->ecc_stats;  in mtd_ecc_stats_errors_show()
300 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_badblocks_show()  local
301 	struct mtd_ecc_stats *ecc_stats = &mtd->ecc_stats;  in mtd_badblocks_show()
310 	struct mtd_info *mtd = dev_get_drvdata(dev);  in mtd_bbtblocks_show()  local
311 	struct mtd_ecc_stats *ecc_stats = &mtd->ecc_stats;  in mtd_bbtblocks_show()
336 ATTRIBUTE_GROUPS(mtd);
345 unsigned mtd_mmap_capabilities(struct mtd_info *mtd)  in mtd_mmap_capabilities()  argument
347 	switch (mtd->type) {  in mtd_mmap_capabilities()
364 	struct mtd_info *mtd;  in mtd_reboot_notifier()  local
366 	mtd = container_of(n, struct mtd_info, reboot_notifier);  in mtd_reboot_notifier()
367 	mtd->_reboot(mtd);  in mtd_reboot_notifier()
382 int add_mtd_device(struct mtd_info *mtd)  in add_mtd_device()  argument
387 	mtd->backing_dev_info = &mtd_bdi;  in add_mtd_device()
389 	BUG_ON(mtd->writesize == 0);  in add_mtd_device()
392 	i = idr_alloc(&mtd_idr, mtd, 0, 0, GFP_KERNEL);  in add_mtd_device()
396 	mtd->index = i;  in add_mtd_device()
397 	mtd->usecount = 0;  in add_mtd_device()
400 	if (mtd->bitflip_threshold == 0)  in add_mtd_device()
401 		mtd->bitflip_threshold = mtd->ecc_strength;  in add_mtd_device()
403 	if (is_power_of_2(mtd->erasesize))  in add_mtd_device()
404 		mtd->erasesize_shift = ffs(mtd->erasesize) - 1;  in add_mtd_device()
406 		mtd->erasesize_shift = 0;  in add_mtd_device()
408 	if (is_power_of_2(mtd->writesize))  in add_mtd_device()
409 		mtd->writesize_shift = ffs(mtd->writesize) - 1;  in add_mtd_device()
411 		mtd->writesize_shift = 0;  in add_mtd_device()
413 	mtd->erasesize_mask = (1 << mtd->erasesize_shift) - 1;  in add_mtd_device()
414 	mtd->writesize_mask = (1 << mtd->writesize_shift) - 1;  in add_mtd_device()
417 	if ((mtd->flags & MTD_WRITEABLE) && (mtd->flags & MTD_POWERUP_LOCK)) {  in add_mtd_device()
418 		error = mtd_unlock(mtd, 0, mtd->size);  in add_mtd_device()
422 			       mtd->name);  in add_mtd_device()
428 	mtd->dev.type = &mtd_devtype;  in add_mtd_device()
429 	mtd->dev.class = &mtd_class;  in add_mtd_device()
430 	mtd->dev.devt = MTD_DEVT(i);  in add_mtd_device()
431 	dev_set_name(&mtd->dev, "mtd%d", i);  in add_mtd_device()
432 	dev_set_drvdata(&mtd->dev, mtd);  in add_mtd_device()
433 	if (device_register(&mtd->dev) != 0)  in add_mtd_device()
436 	device_create(&mtd_class, mtd->dev.parent, MTD_DEVT(i) + 1, NULL,  in add_mtd_device()
439 	pr_debug("mtd: Giving out device %d to %s\n", i, mtd->name);  in add_mtd_device()
443 		not->add(mtd);  in add_mtd_device()
470 int del_mtd_device(struct mtd_info *mtd)  in del_mtd_device()  argument
477 	if (idr_find(&mtd_idr, mtd->index) != mtd) {  in del_mtd_device()
485 		not->remove(mtd);  in del_mtd_device()
487 	if (mtd->usecount) {  in del_mtd_device()
489 		       mtd->index, mtd->name, mtd->usecount);  in del_mtd_device()
492 		device_unregister(&mtd->dev);  in del_mtd_device()
494 		idr_remove(&mtd_idr, mtd->index);  in del_mtd_device()
505 static int mtd_add_device_partitions(struct mtd_info *mtd,  in mtd_add_device_partitions()  argument
512 		ret = add_mtd_device(mtd);  in mtd_add_device_partitions()
518 		ret = add_mtd_partitions(mtd, real_parts, nbparts);  in mtd_add_device_partitions()
520 			del_mtd_device(mtd);  in mtd_add_device_partitions()
557 int mtd_device_parse_register(struct mtd_info *mtd, const char * const *types,  in mtd_device_parse_register()  argument
565 	ret = parse_mtd_partitions(mtd, types, &real_parts, parser_data);  in mtd_device_parse_register()
576 		ret = mtd_add_device_partitions(mtd, real_parts, ret);  in mtd_device_parse_register()
586 	if (mtd->_reboot && !mtd->reboot_notifier.notifier_call) {  in mtd_device_parse_register()
587 		mtd->reboot_notifier.notifier_call = mtd_reboot_notifier;  in mtd_device_parse_register()
588 		register_reboot_notifier(&mtd->reboot_notifier);  in mtd_device_parse_register()
630 	struct mtd_info *mtd;  in register_mtd_user()  local
638 	mtd_for_each_device(mtd)  in register_mtd_user()
639 		new->add(mtd);  in register_mtd_user()
656 	struct mtd_info *mtd;  in unregister_mtd_user()  local
662 	mtd_for_each_device(mtd)  in unregister_mtd_user()
663 		old->remove(mtd);  in unregister_mtd_user()
682 struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num)  in get_mtd_device()  argument
691 			if (other == mtd) {  in get_mtd_device()
692 				ret = mtd;  in get_mtd_device()
698 		if (mtd && mtd != ret)  in get_mtd_device()
717 int __get_mtd_device(struct mtd_info *mtd)  in __get_mtd_device()  argument
721 	if (!try_module_get(mtd->owner))  in __get_mtd_device()
724 	if (mtd->_get_device) {  in __get_mtd_device()
725 		err = mtd->_get_device(mtd);  in __get_mtd_device()
728 			module_put(mtd->owner);  in __get_mtd_device()
732 	mtd->usecount++;  in __get_mtd_device()
748 	struct mtd_info *mtd = NULL, *other;  in get_mtd_device_nm()  local
754 			mtd = other;  in get_mtd_device_nm()
759 	if (!mtd)  in get_mtd_device_nm()
762 	err = __get_mtd_device(mtd);  in get_mtd_device_nm()
767 	return mtd;  in get_mtd_device_nm()
775 void put_mtd_device(struct mtd_info *mtd)  in put_mtd_device()  argument
778 	__put_mtd_device(mtd);  in put_mtd_device()
784 void __put_mtd_device(struct mtd_info *mtd)  in __put_mtd_device()  argument
786 	--mtd->usecount;  in __put_mtd_device()
787 	BUG_ON(mtd->usecount < 0);  in __put_mtd_device()
789 	if (mtd->_put_device)  in __put_mtd_device()
790 		mtd->_put_device(mtd);  in __put_mtd_device()
792 	module_put(mtd->owner);  in __put_mtd_device()
803 int mtd_erase(struct mtd_info *mtd, struct erase_info *instr)  in mtd_erase()  argument
805 	if (instr->addr >= mtd->size || instr->len > mtd->size - instr->addr)  in mtd_erase()
807 	if (!(mtd->flags & MTD_WRITEABLE))  in mtd_erase()
815 	return mtd->_erase(mtd, instr);  in mtd_erase()
822 int mtd_point(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,  in mtd_point()  argument
829 	if (!mtd->_point)  in mtd_point()
831 	if (from < 0 || from >= mtd->size || len > mtd->size - from)  in mtd_point()
835 	return mtd->_point(mtd, from, len, retlen, virt, phys);  in mtd_point()
840 int mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len)  in mtd_unpoint()  argument
842 	if (!mtd->_point)  in mtd_unpoint()
844 	if (from < 0 || from >= mtd->size || len > mtd->size - from)  in mtd_unpoint()
848 	return mtd->_unpoint(mtd, from, len);  in mtd_unpoint()
857 unsigned long mtd_get_unmapped_area(struct mtd_info *mtd, unsigned long len,  in mtd_get_unmapped_area()  argument
860 	if (!mtd->_get_unmapped_area)  in mtd_get_unmapped_area()
862 	if (offset >= mtd->size || len > mtd->size - offset)  in mtd_get_unmapped_area()
864 	return mtd->_get_unmapped_area(mtd, len, offset, flags);  in mtd_get_unmapped_area()
868 int mtd_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,  in mtd_read()  argument
873 	if (from < 0 || from >= mtd->size || len > mtd->size - from)  in mtd_read()
883 	ret_code = mtd->_read(mtd, from, len, retlen, buf);  in mtd_read()
886 	if (mtd->ecc_strength == 0)  in mtd_read()
888 	return ret_code >= mtd->bitflip_threshold ? -EUCLEAN : 0;  in mtd_read()
892 int mtd_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen,  in mtd_write()  argument
896 	if (to < 0 || to >= mtd->size || len > mtd->size - to)  in mtd_write()
898 	if (!mtd->_write || !(mtd->flags & MTD_WRITEABLE))  in mtd_write()
902 	return mtd->_write(mtd, to, len, retlen, buf);  in mtd_write()
913 int mtd_panic_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen,  in mtd_panic_write()  argument
917 	if (!mtd->_panic_write)  in mtd_panic_write()
919 	if (to < 0 || to >= mtd->size || len > mtd->size - to)  in mtd_panic_write()
921 	if (!(mtd->flags & MTD_WRITEABLE))  in mtd_panic_write()
925 	return mtd->_panic_write(mtd, to, len, retlen, buf);  in mtd_panic_write()
929 int mtd_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops)  in mtd_read_oob()  argument
933 	if (!mtd->_read_oob)  in mtd_read_oob()
941 	ret_code = mtd->_read_oob(mtd, from, ops);  in mtd_read_oob()
944 	if (mtd->ecc_strength == 0)  in mtd_read_oob()
946 	return ret_code >= mtd->bitflip_threshold ? -EUCLEAN : 0;  in mtd_read_oob()
955 int mtd_get_fact_prot_info(struct mtd_info *mtd, size_t len, size_t *retlen,  in mtd_get_fact_prot_info()  argument
958 	if (!mtd->_get_fact_prot_info)  in mtd_get_fact_prot_info()
962 	return mtd->_get_fact_prot_info(mtd, len, retlen, buf);  in mtd_get_fact_prot_info()
966 int mtd_read_fact_prot_reg(struct mtd_info *mtd, loff_t from, size_t len,  in mtd_read_fact_prot_reg()  argument
970 	if (!mtd->_read_fact_prot_reg)  in mtd_read_fact_prot_reg()
974 	return mtd->_read_fact_prot_reg(mtd, from, len, retlen, buf);  in mtd_read_fact_prot_reg()
978 int mtd_get_user_prot_info(struct mtd_info *mtd, size_t len, size_t *retlen,  in mtd_get_user_prot_info()  argument
981 	if (!mtd->_get_user_prot_info)  in mtd_get_user_prot_info()
985 	return mtd->_get_user_prot_info(mtd, len, retlen, buf);  in mtd_get_user_prot_info()
989 int mtd_read_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len,  in mtd_read_user_prot_reg()  argument
993 	if (!mtd->_read_user_prot_reg)  in mtd_read_user_prot_reg()
997 	return mtd->_read_user_prot_reg(mtd, from, len, retlen, buf);  in mtd_read_user_prot_reg()
1001 int mtd_write_user_prot_reg(struct mtd_info *mtd, loff_t to, size_t len,  in mtd_write_user_prot_reg()  argument
1007 	if (!mtd->_write_user_prot_reg)  in mtd_write_user_prot_reg()
1011 	ret = mtd->_write_user_prot_reg(mtd, to, len, retlen, buf);  in mtd_write_user_prot_reg()
1023 int mtd_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len)  in mtd_lock_user_prot_reg()  argument
1025 	if (!mtd->_lock_user_prot_reg)  in mtd_lock_user_prot_reg()
1029 	return mtd->_lock_user_prot_reg(mtd, from, len);  in mtd_lock_user_prot_reg()
1034 int mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)  in mtd_lock()  argument
1036 	if (!mtd->_lock)  in mtd_lock()
1038 	if (ofs < 0 || ofs >= mtd->size || len > mtd->size - ofs)  in mtd_lock()
1042 	return mtd->_lock(mtd, ofs, len);  in mtd_lock()
1046 int mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)  in mtd_unlock()  argument
1048 	if (!mtd->_unlock)  in mtd_unlock()
1050 	if (ofs < 0 || ofs >= mtd->size || len > mtd->size - ofs)  in mtd_unlock()
1054 	return mtd->_unlock(mtd, ofs, len);  in mtd_unlock()
1058 int mtd_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len)  in mtd_is_locked()  argument
1060 	if (!mtd->_is_locked)  in mtd_is_locked()
1062 	if (ofs < 0 || ofs >= mtd->size || len > mtd->size - ofs)  in mtd_is_locked()
1066 	return mtd->_is_locked(mtd, ofs, len);  in mtd_is_locked()
1070 int mtd_block_isreserved(struct mtd_info *mtd, loff_t ofs)  in mtd_block_isreserved()  argument
1072 	if (ofs < 0 || ofs >= mtd->size)  in mtd_block_isreserved()
1074 	if (!mtd->_block_isreserved)  in mtd_block_isreserved()
1076 	return mtd->_block_isreserved(mtd, ofs);  in mtd_block_isreserved()
1080 int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs)  in mtd_block_isbad()  argument
1082 	if (ofs < 0 || ofs >= mtd->size)  in mtd_block_isbad()
1084 	if (!mtd->_block_isbad)  in mtd_block_isbad()
1086 	return mtd->_block_isbad(mtd, ofs);  in mtd_block_isbad()
1090 int mtd_block_markbad(struct mtd_info *mtd, loff_t ofs)  in mtd_block_markbad()  argument
1092 	if (!mtd->_block_markbad)  in mtd_block_markbad()
1094 	if (ofs < 0 || ofs >= mtd->size)  in mtd_block_markbad()
1096 	if (!(mtd->flags & MTD_WRITEABLE))  in mtd_block_markbad()
1098 	return mtd->_block_markbad(mtd, ofs);  in mtd_block_markbad()
1113 static int default_mtd_writev(struct mtd_info *mtd, const struct kvec *vecs,  in default_mtd_writev()  argument
1123 		ret = mtd_write(mtd, to, vecs[i].iov_len, &thislen,  in default_mtd_writev()
1145 int mtd_writev(struct mtd_info *mtd, const struct kvec *vecs,  in mtd_writev()  argument
1149 	if (!(mtd->flags & MTD_WRITEABLE))  in mtd_writev()
1151 	if (!mtd->_writev)  in mtd_writev()
1152 		return default_mtd_writev(mtd, vecs, count, to, retlen);  in mtd_writev()
1153 	return mtd->_writev(mtd, vecs, count, to, retlen);  in mtd_writev()
1181 void *mtd_kmalloc_up_to(const struct mtd_info *mtd, size_t *size)  in mtd_kmalloc_up_to()  argument
1185 	size_t min_alloc = max_t(size_t, mtd->writesize, PAGE_SIZE);  in mtd_kmalloc_up_to()
1196 		*size = ALIGN(*size, mtd->writesize);  in mtd_kmalloc_up_to()
1214 	struct mtd_info *mtd;  in mtd_proc_show()  local
1218 	mtd_for_each_device(mtd) {  in mtd_proc_show()
1220 			   mtd->index, (unsigned long long)mtd->size,  in mtd_proc_show()
1221 			   mtd->erasesize, mtd->name);  in mtd_proc_show()