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Diffstat (limited to 'ANDROID_3.4.5/drivers/mtd/mtdpart.c')
-rw-r--r--ANDROID_3.4.5/drivers/mtd/mtdpart.c770
1 files changed, 0 insertions, 770 deletions
diff --git a/ANDROID_3.4.5/drivers/mtd/mtdpart.c b/ANDROID_3.4.5/drivers/mtd/mtdpart.c
deleted file mode 100644
index d3f3ce3e..00000000
--- a/ANDROID_3.4.5/drivers/mtd/mtdpart.c
+++ /dev/null
@@ -1,770 +0,0 @@
-/*
- * Simple MTD partitioning layer
- *
- * Copyright © 2000 Nicolas Pitre <nico@fluxnic.net>
- * Copyright © 2002 Thomas Gleixner <gleixner@linutronix.de>
- * Copyright © 2000-2010 David Woodhouse <dwmw2@infradead.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/list.h>
-#include <linux/kmod.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/partitions.h>
-#include <linux/err.h>
-
-#include "mtdcore.h"
-
-/* Our partition linked list */
-static LIST_HEAD(mtd_partitions);
-static DEFINE_MUTEX(mtd_partitions_mutex);
-
-/* Our partition node structure */
-struct mtd_part {
- struct mtd_info mtd;
- struct mtd_info *master;
- uint64_t offset;
- struct list_head list;
-};
-
-/*
- * Given a pointer to the MTD object in the mtd_part structure, we can retrieve
- * the pointer to that structure with this macro.
- */
-#define PART(x) ((struct mtd_part *)(x))
-
-
-/*
- * MTD methods which simply translate the effective address and pass through
- * to the _real_ device.
- */
-
-static int part_read(struct mtd_info *mtd, loff_t from, size_t len,
- size_t *retlen, u_char *buf)
-{
- struct mtd_part *part = PART(mtd);
- struct mtd_ecc_stats stats;
- int res;
-
- stats = part->master->ecc_stats;
- res = part->master->_read(part->master, from + part->offset, len,
- retlen, buf);
- if (unlikely(res)) {
- if (mtd_is_bitflip(res))
- mtd->ecc_stats.corrected += part->master->ecc_stats.corrected - stats.corrected;
- if (mtd_is_eccerr(res))
- mtd->ecc_stats.failed += part->master->ecc_stats.failed - stats.failed;
- }
- return res;
-}
-
-static int part_point(struct mtd_info *mtd, loff_t from, size_t len,
- size_t *retlen, void **virt, resource_size_t *phys)
-{
- struct mtd_part *part = PART(mtd);
-
- return part->master->_point(part->master, from + part->offset, len,
- retlen, virt, phys);
-}
-
-static int part_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
-{
- struct mtd_part *part = PART(mtd);
-
- return part->master->_unpoint(part->master, from + part->offset, len);
-}
-
-static unsigned long part_get_unmapped_area(struct mtd_info *mtd,
- unsigned long len,
- unsigned long offset,
- unsigned long flags)
-{
- struct mtd_part *part = PART(mtd);
-
- offset += part->offset;
- return part->master->_get_unmapped_area(part->master, len, offset,
- flags);
-}
-
-static int part_read_oob(struct mtd_info *mtd, loff_t from,
- struct mtd_oob_ops *ops)
-{
- struct mtd_part *part = PART(mtd);
- int res;
-
- if (from >= mtd->size)
- return -EINVAL;
- if (ops->datbuf && from + ops->len > mtd->size)
- return -EINVAL;
-
- /*
- * If OOB is also requested, make sure that we do not read past the end
- * of this partition.
- */
- if (ops->oobbuf) {
- size_t len, pages;
-
- if (ops->mode == MTD_OPS_AUTO_OOB)
- len = mtd->oobavail;
- else
- len = mtd->oobsize;
- pages = mtd_div_by_ws(mtd->size, mtd);
- pages -= mtd_div_by_ws(from, mtd);
- if (ops->ooboffs + ops->ooblen > pages * len)
- return -EINVAL;
- }
-
- res = part->master->_read_oob(part->master, from + part->offset, ops);
- if (unlikely(res)) {
- if (mtd_is_bitflip(res))
- mtd->ecc_stats.corrected++;
- if (mtd_is_eccerr(res))
- mtd->ecc_stats.failed++;
- }
- return res;
-}
-
-static int part_read_user_prot_reg(struct mtd_info *mtd, loff_t from,
- size_t len, size_t *retlen, u_char *buf)
-{
- struct mtd_part *part = PART(mtd);
- return part->master->_read_user_prot_reg(part->master, from, len,
- retlen, buf);
-}
-
-static int part_get_user_prot_info(struct mtd_info *mtd,
- struct otp_info *buf, size_t len)
-{
- struct mtd_part *part = PART(mtd);
- return part->master->_get_user_prot_info(part->master, buf, len);
-}
-
-static int part_read_fact_prot_reg(struct mtd_info *mtd, loff_t from,
- size_t len, size_t *retlen, u_char *buf)
-{
- struct mtd_part *part = PART(mtd);
- return part->master->_read_fact_prot_reg(part->master, from, len,
- retlen, buf);
-}
-
-static int part_get_fact_prot_info(struct mtd_info *mtd, struct otp_info *buf,
- size_t len)
-{
- struct mtd_part *part = PART(mtd);
- return part->master->_get_fact_prot_info(part->master, buf, len);
-}
-static int part_write(struct mtd_info *mtd, loff_t to, size_t len,
- size_t *retlen, const u_char *buf)
-{
- int ret;
- struct mtd_part *part = PART(mtd);
- ret = part->master->_write(part->master, to + part->offset, len,
- retlen, buf);
- return ret;
-}
-
-static int part_panic_write(struct mtd_info *mtd, loff_t to, size_t len,
- size_t *retlen, const u_char *buf)
-{
- struct mtd_part *part = PART(mtd);
- return part->master->_panic_write(part->master, to + part->offset, len,
- retlen, buf);
-}
-
-static int part_write_oob(struct mtd_info *mtd, loff_t to,
- struct mtd_oob_ops *ops)
-{
- struct mtd_part *part = PART(mtd);
-
- if (to >= mtd->size)
- return -EINVAL;
- if (ops->datbuf && to + ops->len > mtd->size)
- return -EINVAL;
- return part->master->_write_oob(part->master, to + part->offset, ops);
-}
-
-static int part_write_user_prot_reg(struct mtd_info *mtd, loff_t from,
- size_t len, size_t *retlen, u_char *buf)
-{
- struct mtd_part *part = PART(mtd);
- return part->master->_write_user_prot_reg(part->master, from, len,
- retlen, buf);
-}
-
-static int part_lock_user_prot_reg(struct mtd_info *mtd, loff_t from,
- size_t len)
-{
- struct mtd_part *part = PART(mtd);
- return part->master->_lock_user_prot_reg(part->master, from, len);
-}
-
-static int part_writev(struct mtd_info *mtd, const struct kvec *vecs,
- unsigned long count, loff_t to, size_t *retlen)
-{
- struct mtd_part *part = PART(mtd);
- return part->master->_writev(part->master, vecs, count,
- to + part->offset, retlen);
-}
-
-static int part_erase(struct mtd_info *mtd, struct erase_info *instr)
-{
- struct mtd_part *part = PART(mtd);
- int ret;
-
- instr->addr += part->offset;
- ret = part->master->_erase(part->master, instr);
- if (ret) {
- if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
- instr->fail_addr -= part->offset;
- instr->addr -= part->offset;
- }
- return ret;
-}
-
-void mtd_erase_callback(struct erase_info *instr)
-{
- if (instr->mtd->_erase == part_erase) {
- struct mtd_part *part = PART(instr->mtd);
-
- if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
- instr->fail_addr -= part->offset;
- instr->addr -= part->offset;
- }
- if (instr->callback)
- instr->callback(instr);
-}
-EXPORT_SYMBOL_GPL(mtd_erase_callback);
-
-static int part_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
-{
- struct mtd_part *part = PART(mtd);
- return part->master->_lock(part->master, ofs + part->offset, len);
-}
-
-static int part_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
-{
- struct mtd_part *part = PART(mtd);
- return part->master->_unlock(part->master, ofs + part->offset, len);
-}
-
-static int part_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len)
-{
- struct mtd_part *part = PART(mtd);
- return part->master->_is_locked(part->master, ofs + part->offset, len);
-}
-
-static void part_sync(struct mtd_info *mtd)
-{
- struct mtd_part *part = PART(mtd);
- part->master->_sync(part->master);
-}
-
-static int part_suspend(struct mtd_info *mtd)
-{
- struct mtd_part *part = PART(mtd);
- return part->master->_suspend(part->master);
-}
-
-static void part_resume(struct mtd_info *mtd)
-{
- struct mtd_part *part = PART(mtd);
- part->master->_resume(part->master);
-}
-
-static int part_block_isbad(struct mtd_info *mtd, loff_t ofs)
-{
- struct mtd_part *part = PART(mtd);
- ofs += part->offset;
- return part->master->_block_isbad(part->master, ofs);
-}
-
-static int part_block_markbad(struct mtd_info *mtd, loff_t ofs)
-{
- struct mtd_part *part = PART(mtd);
- int res;
-
- ofs += part->offset;
- res = part->master->_block_markbad(part->master, ofs);
- if (!res)
- mtd->ecc_stats.badblocks++;
- return res;
-}
-
-static inline void free_partition(struct mtd_part *p)
-{
- kfree(p->mtd.name);
- kfree(p);
-}
-
-/*
- * This function unregisters and destroy all slave MTD objects which are
- * attached to the given master MTD object.
- */
-
-int del_mtd_partitions(struct mtd_info *master)
-{
- struct mtd_part *slave, *next;
- int ret, err = 0;
-
- mutex_lock(&mtd_partitions_mutex);
- list_for_each_entry_safe(slave, next, &mtd_partitions, list)
- if (slave->master == master) {
- ret = del_mtd_device(&slave->mtd);
- if (ret < 0) {
- err = ret;
- continue;
- }
- list_del(&slave->list);
- free_partition(slave);
- }
- mutex_unlock(&mtd_partitions_mutex);
-
- return err;
-}
-
-static struct mtd_part *allocate_partition(struct mtd_info *master,
- const struct mtd_partition *part, int partno,
- uint64_t cur_offset)
-{
- struct mtd_part *slave;
- char *name;
-
- /* allocate the partition structure */
- slave = kzalloc(sizeof(*slave), GFP_KERNEL);
- name = kstrdup(part->name, GFP_KERNEL);
- if (!name || !slave) {
- printk(KERN_ERR"memory allocation error while creating partitions for \"%s\"\n",
- master->name);
- kfree(name);
- kfree(slave);
- return ERR_PTR(-ENOMEM);
- }
-
- /* set up the MTD object for this partition */
- slave->mtd.type = master->type;
- slave->mtd.flags = master->flags & ~part->mask_flags;
- slave->mtd.size = part->size;
- slave->mtd.writesize = master->writesize;
- slave->mtd.writebufsize = master->writebufsize;
- slave->mtd.oobsize = master->oobsize;
- slave->mtd.oobavail = master->oobavail;
- slave->mtd.subpage_sft = master->subpage_sft;
-
- slave->mtd.name = name;
- slave->mtd.owner = master->owner;
- slave->mtd.backing_dev_info = master->backing_dev_info;
-
- /* NOTE: we don't arrange MTDs as a tree; it'd be error-prone
- * to have the same data be in two different partitions.
- */
- slave->mtd.dev.parent = master->dev.parent;
-
- slave->mtd._read = part_read;
- slave->mtd._write = part_write;
-
- if (master->_panic_write)
- slave->mtd._panic_write = part_panic_write;
-
- if (master->_point && master->_unpoint) {
- slave->mtd._point = part_point;
- slave->mtd._unpoint = part_unpoint;
- }
-
- if (master->_get_unmapped_area)
- slave->mtd._get_unmapped_area = part_get_unmapped_area;
- if (master->_read_oob)
- slave->mtd._read_oob = part_read_oob;
- if (master->_write_oob)
- slave->mtd._write_oob = part_write_oob;
- if (master->_read_user_prot_reg)
- slave->mtd._read_user_prot_reg = part_read_user_prot_reg;
- if (master->_read_fact_prot_reg)
- slave->mtd._read_fact_prot_reg = part_read_fact_prot_reg;
- if (master->_write_user_prot_reg)
- slave->mtd._write_user_prot_reg = part_write_user_prot_reg;
- if (master->_lock_user_prot_reg)
- slave->mtd._lock_user_prot_reg = part_lock_user_prot_reg;
- if (master->_get_user_prot_info)
- slave->mtd._get_user_prot_info = part_get_user_prot_info;
- if (master->_get_fact_prot_info)
- slave->mtd._get_fact_prot_info = part_get_fact_prot_info;
- if (master->_sync)
- slave->mtd._sync = part_sync;
- if (!partno && !master->dev.class && master->_suspend &&
- master->_resume) {
- slave->mtd._suspend = part_suspend;
- slave->mtd._resume = part_resume;
- }
- if (master->_writev)
- slave->mtd._writev = part_writev;
- if (master->_lock)
- slave->mtd._lock = part_lock;
- if (master->_unlock)
- slave->mtd._unlock = part_unlock;
- if (master->_is_locked)
- slave->mtd._is_locked = part_is_locked;
- if (master->_block_isbad)
- slave->mtd._block_isbad = part_block_isbad;
- if (master->_block_markbad)
- slave->mtd._block_markbad = part_block_markbad;
- slave->mtd._erase = part_erase;
- slave->master = master;
- slave->offset = part->offset;
-
- if (slave->offset == MTDPART_OFS_APPEND)
- slave->offset = cur_offset;
- if (slave->offset == MTDPART_OFS_NXTBLK) {
- slave->offset = cur_offset;
- if (mtd_mod_by_eb(cur_offset, master) != 0) {
- /* Round up to next erasesize */
- slave->offset = (mtd_div_by_eb(cur_offset, master) + 1) * master->erasesize;
- printk(KERN_NOTICE "Moving partition %d: "
- "0x%012llx -> 0x%012llx\n", partno,
- (unsigned long long)cur_offset, (unsigned long long)slave->offset);
- }
- }
- if (slave->offset == MTDPART_OFS_RETAIN) {
- slave->offset = cur_offset;
- if (master->size - slave->offset >= slave->mtd.size) {
- slave->mtd.size = master->size - slave->offset
- - slave->mtd.size;
- } else {
- printk(KERN_ERR "mtd partition \"%s\" doesn't have enough space: %#llx < %#llx, disabled\n",
- part->name, master->size - slave->offset,
- slave->mtd.size);
- /* register to preserve ordering */
- goto out_register;
- }
- }
- if (slave->mtd.size == MTDPART_SIZ_FULL)
- slave->mtd.size = master->size - slave->offset;
-
- printk(KERN_NOTICE "0x%012llx-0x%012llx : \"%s\"\n", (unsigned long long)slave->offset,
- (unsigned long long)(slave->offset + slave->mtd.size), slave->mtd.name);
-
- /* let's do some sanity checks */
- if (slave->offset >= master->size) {
- /* let's register it anyway to preserve ordering */
- slave->offset = 0;
- slave->mtd.size = 0;
- printk(KERN_ERR"mtd: partition \"%s\" is out of reach -- disabled\n",
- part->name);
- goto out_register;
- }
- if (slave->offset + slave->mtd.size > master->size) {
- slave->mtd.size = master->size - slave->offset;
- printk(KERN_WARNING"mtd: partition \"%s\" extends beyond the end of device \"%s\" -- size truncated to %#llx\n",
- part->name, master->name, (unsigned long long)slave->mtd.size);
- }
- if (master->numeraseregions > 1) {
- /* Deal with variable erase size stuff */
- int i, max = master->numeraseregions;
- u64 end = slave->offset + slave->mtd.size;
- struct mtd_erase_region_info *regions = master->eraseregions;
-
- /* Find the first erase regions which is part of this
- * partition. */
- for (i = 0; i < max && regions[i].offset <= slave->offset; i++)
- ;
- /* The loop searched for the region _behind_ the first one */
- if (i > 0)
- i--;
-
- /* Pick biggest erasesize */
- for (; i < max && regions[i].offset < end; i++) {
- if (slave->mtd.erasesize < regions[i].erasesize) {
- slave->mtd.erasesize = regions[i].erasesize;
- }
- }
- BUG_ON(slave->mtd.erasesize == 0);
- } else {
- /* Single erase size */
- slave->mtd.erasesize = master->erasesize;
- }
-
- if ((slave->mtd.flags & MTD_WRITEABLE) &&
- mtd_mod_by_eb(slave->offset, &slave->mtd)) {
- /* Doesn't start on a boundary of major erase size */
- /* FIXME: Let it be writable if it is on a boundary of
- * _minor_ erase size though */
- slave->mtd.flags &= ~MTD_WRITEABLE;
- printk(KERN_WARNING"mtd: partition \"%s\" doesn't start on an erase block boundary -- force read-only\n",
- part->name);
- }
- if ((slave->mtd.flags & MTD_WRITEABLE) &&
- mtd_mod_by_eb(slave->mtd.size, &slave->mtd)) {
- slave->mtd.flags &= ~MTD_WRITEABLE;
- printk(KERN_WARNING"mtd: partition \"%s\" doesn't end on an erase block -- force read-only\n",
- part->name);
- }
-
- slave->mtd.ecclayout = master->ecclayout;
- slave->mtd.ecc_strength = master->ecc_strength;
- if (master->_block_isbad) {
- uint64_t offs = 0;
-
- while (offs < slave->mtd.size) {
- if (mtd_block_isbad(master, offs + slave->offset))
- slave->mtd.ecc_stats.badblocks++;
- offs += slave->mtd.erasesize;
- }
- }
-
-out_register:
- return slave;
-}
-
-int mtd_add_partition(struct mtd_info *master, char *name,
- long long offset, long long length)
-{
- struct mtd_partition part;
- struct mtd_part *p, *new;
- uint64_t start, end;
- int ret = 0;
-
- /* the direct offset is expected */
- if (offset == MTDPART_OFS_APPEND ||
- offset == MTDPART_OFS_NXTBLK)
- return -EINVAL;
-
- if (length == MTDPART_SIZ_FULL)
- length = master->size - offset;
-
- if (length <= 0)
- return -EINVAL;
-
- part.name = name;
- part.size = length;
- part.offset = offset;
- part.mask_flags = 0;
- part.ecclayout = NULL;
-
- new = allocate_partition(master, &part, -1, offset);
- if (IS_ERR(new))
- return PTR_ERR(new);
-
- start = offset;
- end = offset + length;
-
- mutex_lock(&mtd_partitions_mutex);
- list_for_each_entry(p, &mtd_partitions, list)
- if (p->master == master) {
- if ((start >= p->offset) &&
- (start < (p->offset + p->mtd.size)))
- goto err_inv;
-
- if ((end >= p->offset) &&
- (end < (p->offset + p->mtd.size)))
- goto err_inv;
- }
-
- list_add(&new->list, &mtd_partitions);
- mutex_unlock(&mtd_partitions_mutex);
-
- add_mtd_device(&new->mtd);
-
- return ret;
-err_inv:
- mutex_unlock(&mtd_partitions_mutex);
- free_partition(new);
- return -EINVAL;
-}
-EXPORT_SYMBOL_GPL(mtd_add_partition);
-
-int mtd_del_partition(struct mtd_info *master, int partno)
-{
- struct mtd_part *slave, *next;
- int ret = -EINVAL;
-
- mutex_lock(&mtd_partitions_mutex);
- list_for_each_entry_safe(slave, next, &mtd_partitions, list)
- if ((slave->master == master) &&
- (slave->mtd.index == partno)) {
- ret = del_mtd_device(&slave->mtd);
- if (ret < 0)
- break;
-
- list_del(&slave->list);
- free_partition(slave);
- break;
- }
- mutex_unlock(&mtd_partitions_mutex);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(mtd_del_partition);
-
-/*
- * This function, given a master MTD object and a partition table, creates
- * and registers slave MTD objects which are bound to the master according to
- * the partition definitions.
- *
- * We don't register the master, or expect the caller to have done so,
- * for reasons of data integrity.
- */
-
-int add_mtd_partitions(struct mtd_info *master,
- const struct mtd_partition *parts,
- int nbparts)
-{
- struct mtd_part *slave;
- uint64_t cur_offset = 0;
- int i;
-
- printk(KERN_NOTICE "Creating %d MTD partitions on \"%s\":\n", nbparts, master->name);
-
- for (i = 0; i < nbparts; i++) {
- slave = allocate_partition(master, parts + i, i, cur_offset);
- if (IS_ERR(slave))
- return PTR_ERR(slave);
-
- mutex_lock(&mtd_partitions_mutex);
- list_add(&slave->list, &mtd_partitions);
- mutex_unlock(&mtd_partitions_mutex);
-
- add_mtd_device(&slave->mtd);
-
- cur_offset = slave->offset + slave->mtd.size;
- }
-
- return 0;
-}
-
-static DEFINE_SPINLOCK(part_parser_lock);
-static LIST_HEAD(part_parsers);
-
-static struct mtd_part_parser *get_partition_parser(const char *name)
-{
- struct mtd_part_parser *p, *ret = NULL;
-
- spin_lock(&part_parser_lock);
-
- list_for_each_entry(p, &part_parsers, list)
- if (!strcmp(p->name, name) && try_module_get(p->owner)) {
- ret = p;
- break;
- }
-
- spin_unlock(&part_parser_lock);
-
- return ret;
-}
-
-#define put_partition_parser(p) do { module_put((p)->owner); } while (0)
-
-int register_mtd_parser(struct mtd_part_parser *p)
-{
- spin_lock(&part_parser_lock);
- list_add(&p->list, &part_parsers);
- spin_unlock(&part_parser_lock);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(register_mtd_parser);
-
-int deregister_mtd_parser(struct mtd_part_parser *p)
-{
- spin_lock(&part_parser_lock);
- list_del(&p->list);
- spin_unlock(&part_parser_lock);
- return 0;
-}
-EXPORT_SYMBOL_GPL(deregister_mtd_parser);
-
-/*
- * Do not forget to update 'parse_mtd_partitions()' kerneldoc comment if you
- * are changing this array!
- */
-static const char *default_mtd_part_types[] = {
- "cmdlinepart",
- "ofpart",
- NULL
-};
-
-/**
- * parse_mtd_partitions - parse MTD partitions
- * @master: the master partition (describes whole MTD device)
- * @types: names of partition parsers to try or %NULL
- * @pparts: array of partitions found is returned here
- * @data: MTD partition parser-specific data
- *
- * This function tries to find partition on MTD device @master. It uses MTD
- * partition parsers, specified in @types. However, if @types is %NULL, then
- * the default list of parsers is used. The default list contains only the
- * "cmdlinepart" and "ofpart" parsers ATM.
- *
- * This function may return:
- * o a negative error code in case of failure
- * o zero if no partitions were found
- * o a positive number of found partitions, in which case on exit @pparts will
- * point to an array containing this number of &struct mtd_info objects.
- */
-int parse_mtd_partitions(struct mtd_info *master, const char **types,
- struct mtd_partition **pparts,
- struct mtd_part_parser_data *data)
-{
- struct mtd_part_parser *parser;
- int ret = 0;
-
- if (!types)
- types = default_mtd_part_types;
-
- for ( ; ret <= 0 && *types; types++) {
- parser = get_partition_parser(*types);
- if (!parser && !request_module("%s", *types))
- parser = get_partition_parser(*types);
- if (!parser)
- continue;
- ret = (*parser->parse_fn)(master, pparts, data);
- if (ret > 0) {
- printk(KERN_NOTICE "%d %s partitions found on MTD device %s\n",
- ret, parser->name, master->name);
- }
- put_partition_parser(parser);
- }
- return ret;
-}
-
-int mtd_is_partition(struct mtd_info *mtd)
-{
- struct mtd_part *part;
- int ispart = 0;
-
- mutex_lock(&mtd_partitions_mutex);
- list_for_each_entry(part, &mtd_partitions, list)
- if (&part->mtd == mtd) {
- ispart = 1;
- break;
- }
- mutex_unlock(&mtd_partitions_mutex);
-
- return ispart;
-}
-EXPORT_SYMBOL_GPL(mtd_is_partition);
-
-uint64_t mtd_get_device_size(struct mtd_info *mtd)
-{
- if (!mtd_is_partition(mtd))
- return mtd->size;
-
- return PART(mtd)->master->size;
-}
-EXPORT_SYMBOL_GPL(mtd_get_device_size);