326 	struct mtd_part *slave;  in allocate_partition()  local
332 	slave = kzalloc(sizeof(*slave), GFP_KERNEL);  in allocate_partition()
334 	if (!name || !slave) {  in allocate_partition()
338 		kfree(slave);  in allocate_partition()
343 	slave->mtd.type = parent->type;  in allocate_partition()
344 	slave->mtd.flags = parent->orig_flags & ~part->mask_flags;  in allocate_partition()
345 	slave->mtd.orig_flags = slave->mtd.flags;  in allocate_partition()
346 	slave->mtd.size = part->size;  in allocate_partition()
347 	slave->mtd.writesize = parent->writesize;  in allocate_partition()
348 	slave->mtd.writebufsize = parent->writebufsize;  in allocate_partition()
349 	slave->mtd.oobsize = parent->oobsize;  in allocate_partition()
350 	slave->mtd.oobavail = parent->oobavail;  in allocate_partition()
351 	slave->mtd.subpage_sft = parent->subpage_sft;  in allocate_partition()
352 	slave->mtd.pairing = parent->pairing;  in allocate_partition()
354 	slave->mtd.name = name;  in allocate_partition()
355 	slave->mtd.owner = parent->owner;  in allocate_partition()
365 	slave->mtd.dev.parent = IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER) || mtd_is_partition(parent) ?  in allocate_partition()
368 	slave->mtd.dev.of_node = part->of_node;  in allocate_partition()
371 		slave->mtd._read = part_read;  in allocate_partition()
373 		slave->mtd._write = part_write;  in allocate_partition()
376 		slave->mtd._panic_write = part_panic_write;  in allocate_partition()
379 		slave->mtd._point = part_point;  in allocate_partition()
380 		slave->mtd._unpoint = part_unpoint;  in allocate_partition()
384 		slave->mtd._read_oob = part_read_oob;  in allocate_partition()
386 		slave->mtd._write_oob = part_write_oob;  in allocate_partition()
388 		slave->mtd._read_user_prot_reg = part_read_user_prot_reg;  in allocate_partition()
390 		slave->mtd._read_fact_prot_reg = part_read_fact_prot_reg;  in allocate_partition()
392 		slave->mtd._write_user_prot_reg = part_write_user_prot_reg;  in allocate_partition()
394 		slave->mtd._lock_user_prot_reg = part_lock_user_prot_reg;  in allocate_partition()
396 		slave->mtd._get_user_prot_info = part_get_user_prot_info;  in allocate_partition()
398 		slave->mtd._get_fact_prot_info = part_get_fact_prot_info;  in allocate_partition()
400 		slave->mtd._sync = part_sync;  in allocate_partition()
403 		slave->mtd._suspend = part_suspend;  in allocate_partition()
404 		slave->mtd._resume = part_resume;  in allocate_partition()
407 		slave->mtd._writev = part_writev;  in allocate_partition()
409 		slave->mtd._lock = part_lock;  in allocate_partition()
411 		slave->mtd._unlock = part_unlock;  in allocate_partition()
413 		slave->mtd._is_locked = part_is_locked;  in allocate_partition()
415 		slave->mtd._block_isreserved = part_block_isreserved;  in allocate_partition()
417 		slave->mtd._block_isbad = part_block_isbad;  in allocate_partition()
419 		slave->mtd._block_markbad = part_block_markbad;  in allocate_partition()
421 		slave->mtd._max_bad_blocks = part_max_bad_blocks;  in allocate_partition()
424 		slave->mtd._get_device = part_get_device;  in allocate_partition()
426 		slave->mtd._put_device = part_put_device;  in allocate_partition()
428 	slave->mtd._erase = part_erase;  in allocate_partition()
429 	slave->parent = parent;  in allocate_partition()
430 	slave->offset = part->offset;  in allocate_partition()
432 	if (slave->offset == MTDPART_OFS_APPEND)  in allocate_partition()
433 		slave->offset = cur_offset;  in allocate_partition()
434 	if (slave->offset == MTDPART_OFS_NXTBLK) {  in allocate_partition()
436 		slave->offset = cur_offset;  in allocate_partition()
439 			slave->offset += wr_alignment - remainder;  in allocate_partition()
442 			       (unsigned long long)cur_offset, (unsigned long long)slave->offset);  in allocate_partition()
445 	if (slave->offset == MTDPART_OFS_RETAIN) {  in allocate_partition()
446 		slave->offset = cur_offset;  in allocate_partition()
447 		if (parent->size - slave->offset >= slave->mtd.size) {  in allocate_partition()
448 			slave->mtd.size = parent->size - slave->offset  in allocate_partition()
449 							- slave->mtd.size;  in allocate_partition()
452 				part->name, parent->size - slave->offset,  in allocate_partition()
453 				slave->mtd.size);  in allocate_partition()
458 	if (slave->mtd.size == MTDPART_SIZ_FULL)  in allocate_partition()
459 		slave->mtd.size = parent->size - slave->offset;  in allocate_partition()
461 	printk(KERN_NOTICE "0x%012llx-0x%012llx : \"%s\"\n", (unsigned long long)slave->offset,  in allocate_partition()
462 		(unsigned long long)(slave->offset + slave->mtd.size), slave->mtd.name);  in allocate_partition()
465 	if (slave->offset >= parent->size) {  in allocate_partition()
467 		slave->offset = 0;  in allocate_partition()
468 		slave->mtd.size = 0;  in allocate_partition()
471 		slave->mtd.erasesize = parent->erasesize;  in allocate_partition()
477 	if (slave->offset + slave->mtd.size > parent->size) {  in allocate_partition()
478 		slave->mtd.size = parent->size - slave->offset;  in allocate_partition()
480 			part->name, parent->name, (unsigned long long)slave->mtd.size);  in allocate_partition()
485 		u64 end = slave->offset + slave->mtd.size;  in allocate_partition()
490 		for (i = 0; i < max && regions[i].offset <= slave->offset; i++)  in allocate_partition()
498 			if (slave->mtd.erasesize < regions[i].erasesize) {  in allocate_partition()
499 				slave->mtd.erasesize = regions[i].erasesize;  in allocate_partition()
502 		BUG_ON(slave->mtd.erasesize == 0);  in allocate_partition()
505 		slave->mtd.erasesize = parent->erasesize;  in allocate_partition()
509 	 * Slave erasesize might differ from the master one if the master  in allocate_partition()
513 	if (!(slave->mtd.flags & MTD_NO_ERASE))  in allocate_partition()
514 		wr_alignment = slave->mtd.erasesize;  in allocate_partition()
516 	tmp = part_absolute_offset(parent) + slave->offset;  in allocate_partition()
518 	if ((slave->mtd.flags & MTD_WRITEABLE) && remainder) {  in allocate_partition()
522 		slave->mtd.flags &= ~MTD_WRITEABLE;  in allocate_partition()
527 	tmp = part_absolute_offset(parent) + slave->mtd.size;  in allocate_partition()
529 	if ((slave->mtd.flags & MTD_WRITEABLE) && remainder) {  in allocate_partition()
530 		slave->mtd.flags &= ~MTD_WRITEABLE;  in allocate_partition()
535 	mtd_set_ooblayout(&slave->mtd, &part_ooblayout_ops);  in allocate_partition()
536 	slave->mtd.ecc_step_size = parent->ecc_step_size;  in allocate_partition()
537 	slave->mtd.ecc_strength = parent->ecc_strength;  in allocate_partition()
538 	slave->mtd.bitflip_threshold = parent->bitflip_threshold;  in allocate_partition()
543 		while (offs < slave->mtd.size) {  in allocate_partition()
544 			if (mtd_block_isreserved(parent, offs + slave->offset))  in allocate_partition()
545 				slave->mtd.ecc_stats.bbtblocks++;  in allocate_partition()
546 			else if (mtd_block_isbad(parent, offs + slave->offset))  in allocate_partition()
547 				slave->mtd.ecc_stats.badblocks++;  in allocate_partition()
548 			offs += slave->mtd.erasesize;  in allocate_partition()
553 	return slave;  in allocate_partition()
663  * This function unregisters and destroy all slave MTD objects which are
668 	struct mtd_part *slave, *next;  in del_mtd_partitions()  local
672 	list_for_each_entry_safe(slave, next, &mtd_partitions, list)  in del_mtd_partitions()
673 		if (slave->parent == mtd) {  in del_mtd_partitions()
674 			ret = __mtd_del_partition(slave);  in del_mtd_partitions()
685 	struct mtd_part *slave, *next;  in mtd_del_partition()  local
689 	list_for_each_entry_safe(slave, next, &mtd_partitions, list)  in mtd_del_partition()
690 		if ((slave->parent == mtd) &&  in mtd_del_partition()
691 		    (slave->mtd.index == partno)) {  in mtd_del_partition()
692 			ret = __mtd_del_partition(slave);  in mtd_del_partition()
703  * and registers slave MTD objects which are bound to the master according to
714 	struct mtd_part *slave;  in add_mtd_partitions()  local
721 		slave = allocate_partition(master, parts + i, i, cur_offset);  in add_mtd_partitions()
722 		if (IS_ERR(slave)) {  in add_mtd_partitions()
723 			ret = PTR_ERR(slave);  in add_mtd_partitions()
728 		list_add(&slave->list, &mtd_partitions);  in add_mtd_partitions()
731 		ret = add_mtd_device(&slave->mtd);  in add_mtd_partitions()
734 			list_del(&slave->list);  in add_mtd_partitions()
737 			free_partition(slave);  in add_mtd_partitions()
741 		mtd_add_partition_attrs(slave);  in add_mtd_partitions()
743 		parse_mtd_partitions(&slave->mtd, parts[i].types, NULL);  in add_mtd_partitions()
745 		cur_offset = slave->offset + slave->mtd.size;  in add_mtd_partitions()