mtd: Update MTD infrastructure to support 64bit device size

This patch brings the U-Boot MTD infrastructure in sync with the current
Linux MTD version (2.6.30-rc3). Biggest change is the 64bit device size
support and a resync of the mtdpart.c file which has seen multiple fixes
meanwhile.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Kyungmin Park <kmpark@infradead.org>

1 files changed, 220 insertions, 268 deletions

diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index f010f5e3ac..e2e43eaec4 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -26,7 +26,7 @@ struct list_head mtd_partitions;
 struct mtd_part {
 	struct mtd_info mtd;
 	struct mtd_info *master;
-	u_int32_t offset;
+	uint64_t offset;
 	int index;
 	struct list_head list;
 	int registered;
@@ -44,50 +44,32 @@ struct mtd_part {
  * to the _real_ device.
  */
 
-static int part_read (struct mtd_info *mtd, loff_t from, size_t len,
-			size_t *retlen, u_char *buf)
+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;
+
 	if (from >= mtd->size)
 		len = 0;
 	else if (from + len > mtd->size)
 		len = mtd->size - from;
-	res = part->master->read (part->master, from + part->offset,
+	res = part->master->read(part->master, from + part->offset,
 				   len, retlen, buf);
 	if (unlikely(res)) {
 		if (res == -EUCLEAN)
-			mtd->ecc_stats.corrected++;
+			mtd->ecc_stats.corrected += part->master->ecc_stats.corrected - stats.corrected;
 		if (res == -EBADMSG)
-			mtd->ecc_stats.failed++;
+			mtd->ecc_stats.failed += part->master->ecc_stats.failed - stats.failed;
 	}
 	return res;
 }
 
-#ifdef MTD_LINUX
-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);
-	if (from >= mtd->size)
-		len = 0;
-	else if (from + len > mtd->size)
-		len = mtd->size - from;
-	return part->master->point (part->master, from + part->offset,
-				    len, retlen, virt, phys);
-}
-
-static void part_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
-{
-	struct mtd_part *part = PART(mtd);
-
-	part->master->unpoint(part->master, from + part->offset, len);
-}
-#endif
-
 static int part_read_oob(struct mtd_info *mtd, loff_t from,
-			 struct mtd_oob_ops *ops)
+		struct mtd_oob_ops *ops)
 {
 	struct mtd_part *part = PART(mtd);
 	int res;
@@ -107,38 +89,38 @@ static int part_read_oob(struct mtd_info *mtd, loff_t from,
 	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)
+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,
+	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)
+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);
+	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)
+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,
+	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)
+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);
+	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)
+static int part_write(struct mtd_info *mtd, loff_t to, size_t len,
+		size_t *retlen, const u_char *buf)
 {
 	struct mtd_part *part = PART(mtd);
 	if (!(mtd->flags & MTD_WRITEABLE))
@@ -147,13 +129,12 @@ static int part_write (struct mtd_info *mtd, loff_t to, size_t len,
 		len = 0;
 	else if (to + len > mtd->size)
 		len = mtd->size - to;
-	return part->master->write (part->master, to + part->offset,
+	return part->master->write(part->master, to + part->offset,
 				    len, retlen, buf);
 }
 
-#ifdef MTD_LINUX
-static int part_panic_write (struct mtd_info *mtd, loff_t to, size_t len,
-			size_t *retlen, const u_char *buf)
+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);
 	if (!(mtd->flags & MTD_WRITEABLE))
@@ -162,13 +143,12 @@ static int part_panic_write (struct mtd_info *mtd, loff_t to, size_t len,
 		len = 0;
 	else if (to + len > mtd->size)
 		len = mtd->size - to;
-	return part->master->panic_write (part->master, to + part->offset,
+	return part->master->panic_write(part->master, to + part->offset,
 				    len, retlen, buf);
 }
-#endif
 
 static int part_write_oob(struct mtd_info *mtd, loff_t to,
-			 struct mtd_oob_ops *ops)
+		struct mtd_oob_ops *ops)
 {
 	struct mtd_part *part = PART(mtd);
 
@@ -182,33 +162,22 @@ static int part_write_oob(struct mtd_info *mtd, loff_t to,
 	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)
+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,
+	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);
-}
-
-#ifdef MTD_LINUX
-static int part_writev (struct mtd_info *mtd,  const struct kvec *vecs,
-			 unsigned long count, loff_t to, size_t *retlen)
+static int part_lock_user_prot_reg(struct mtd_info *mtd, loff_t from,
+		size_t len)
 {
 	struct mtd_part *part = PART(mtd);
-	if (!(mtd->flags & MTD_WRITEABLE))
-		return -EROFS;
-	return part->master->writev (part->master, vecs, count,
-					to + part->offset, retlen);
+	return part->master->lock_user_prot_reg(part->master, from, len);
 }
-#endif
 
-static int part_erase (struct mtd_info *mtd, struct erase_info *instr)
+static int part_erase(struct mtd_info *mtd, struct erase_info *instr)
 {
 	struct mtd_part *part = PART(mtd);
 	int ret;
@@ -219,7 +188,7 @@ static int part_erase (struct mtd_info *mtd, struct erase_info *instr)
 	instr->addr += part->offset;
 	ret = part->master->erase(part->master, instr);
 	if (ret) {
-		if (instr->fail_addr != 0xffffffff)
+		if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
 			instr->fail_addr -= part->offset;
 		instr->addr -= part->offset;
 	}
@@ -231,19 +200,15 @@ 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 != 0xffffffff)
+		if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
 			instr->fail_addr -= part->offset;
 		instr->addr -= part->offset;
 	}
 	if (instr->callback)
 		instr->callback(instr);
 }
-#ifdef MTD_LINUX
-EXPORT_SYMBOL_GPL(mtd_erase_callback);
-#endif
 
-#ifdef MTD_LINUX
-static int part_lock (struct mtd_info *mtd, loff_t ofs, size_t len)
+static int part_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
 	struct mtd_part *part = PART(mtd);
 	if ((len + ofs) > mtd->size)
@@ -251,14 +216,13 @@ static int part_lock (struct mtd_info *mtd, loff_t ofs, size_t len)
 	return part->master->lock(part->master, ofs + part->offset, len);
 }
 
-static int part_unlock (struct mtd_info *mtd, loff_t ofs, size_t len)
+static int part_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
 	struct mtd_part *part = PART(mtd);
 	if ((len + ofs) > mtd->size)
 		return -EINVAL;
 	return part->master->unlock(part->master, ofs + part->offset, len);
 }
-#endif
 
 static void part_sync(struct mtd_info *mtd)
 {
@@ -266,7 +230,6 @@ static void part_sync(struct mtd_info *mtd)
 	part->master->sync(part->master);
 }
 
-#ifdef MTD_LINUX
 static int part_suspend(struct mtd_info *mtd)
 {
 	struct mtd_part *part = PART(mtd);
@@ -278,9 +241,8 @@ static void part_resume(struct mtd_info *mtd)
 	struct mtd_part *part = PART(mtd);
 	part->master->resume(part->master);
 }
-#endif
 
-static int part_block_isbad (struct mtd_info *mtd, loff_t ofs)
+static int part_block_isbad(struct mtd_info *mtd, loff_t ofs)
 {
 	struct mtd_part *part = PART(mtd);
 	if (ofs >= mtd->size)
@@ -289,7 +251,7 @@ static int part_block_isbad (struct mtd_info *mtd, loff_t ofs)
 	return part->master->block_isbad(part->master, ofs);
 }
 
-static int part_block_markbad (struct mtd_info *mtd, loff_t ofs)
+static int part_block_markbad(struct mtd_info *mtd, loff_t ofs)
 {
 	struct mtd_part *part = PART(mtd);
 	int res;
@@ -300,10 +262,8 @@ static int part_block_markbad (struct mtd_info *mtd, loff_t ofs)
 		return -EINVAL;
 	ofs += part->offset;
 	res = part->master->block_markbad(part->master, ofs);
-#ifdef MTD_LINUX
 	if (!res)
 		mtd->ecc_stats.badblocks++;
-#endif
 	return res;
 }
 
@@ -314,31 +274,193 @@ static int part_block_markbad (struct mtd_info *mtd, loff_t ofs)
 
 int del_mtd_partitions(struct mtd_info *master)
 {
-	struct list_head *node;
-	struct mtd_part *slave;
+	struct mtd_part *slave, *next;
 
-	for (node = mtd_partitions.next;
-	     node != &mtd_partitions;
-	     node = node->next) {
-		slave = list_entry(node, struct mtd_part, list);
+	list_for_each_entry_safe(slave, next, &mtd_partitions, list)
 		if (slave->master == master) {
-			struct list_head *prev = node->prev;
-			__list_del(prev, node->next);
-			if(slave->registered)
+			list_del(&slave->list);
+			if (slave->registered)
 				del_mtd_device(&slave->mtd);
 			kfree(slave);
-			node = prev;
 		}
-	}
 
 	return 0;
 }
 
+static struct mtd_part *add_one_partition(struct mtd_info *master,
+		const struct mtd_partition *part, int partno,
+		uint64_t cur_offset)
+{
+	struct mtd_part *slave;
+
+	/* allocate the partition structure */
+	slave = kzalloc(sizeof(*slave), GFP_KERNEL);
+	if (!slave) {
+		printk(KERN_ERR"memory allocation error while creating partitions for \"%s\"\n",
+			master->name);
+		del_mtd_partitions(master);
+		return NULL;
+	}
+	list_add(&slave->list, &mtd_partitions);
+
+	/* 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.oobsize = master->oobsize;
+	slave->mtd.oobavail = master->oobavail;
+	slave->mtd.subpage_sft = master->subpage_sft;
+
+	slave->mtd.name = part->name;
+	slave->mtd.owner = master->owner;
+
+	slave->mtd.read = part_read;
+	slave->mtd.write = part_write;
+
+	if (master->panic_write)
+		slave->mtd.panic_write = part_panic_write;
+
+	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->suspend && master->resume) {
+			slave->mtd.suspend = part_suspend;
+			slave->mtd.resume = part_resume;
+	}
+	if (master->lock)
+		slave->mtd.lock = part_lock;
+	if (master->unlock)
+		slave->mtd.unlock = part_unlock;
+	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;
+	slave->index = partno;
+
+	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->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 */
+		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;
+	if (master->block_isbad) {
+		uint64_t offs = 0;
+
+		while (offs < slave->mtd.size) {
+			if (master->block_isbad(master,
+						offs + slave->offset))
+				slave->mtd.ecc_stats.badblocks++;
+			offs += slave->mtd.erasesize;
+		}
+	}
+
+out_register:
+	if (part->mtdp) {
+		/* store the object pointer (caller may or may not register it*/
+		*part->mtdp = &slave->mtd;
+		slave->registered = 0;
+	} else {
+		/* register our partition */
+		add_mtd_device(&slave->mtd);
+		slave->registered = 1;
+	}
+	return slave;
+}
+
 /*
  * 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.
- * (Q: should we register the master MTD object as well?)
+ *
+ * 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,
@@ -346,7 +468,7 @@ int add_mtd_partitions(struct mtd_info *master,
 		       int nbparts)
 {
 	struct mtd_part *slave;
-	u_int32_t cur_offset = 0;
+	uint64_t cur_offset = 0;
 	int i;
 
 	/*
@@ -357,184 +479,14 @@ int add_mtd_partitions(struct mtd_info *master,
 	if (mtd_partitions.next == NULL)
 		INIT_LIST_HEAD(&mtd_partitions);
 
-	printk (KERN_NOTICE "Creating %d MTD partitions on \"%s\":\n", nbparts, master->name);
+	printk(KERN_NOTICE "Creating %d MTD partitions on \"%s\":\n", nbparts, master->name);
 
 	for (i = 0; i < nbparts; i++) {
-
-		/* allocate the partition structure */
-		slave = kzalloc (sizeof(*slave), GFP_KERNEL);
-		if (!slave) {
-			printk ("memory allocation error while creating partitions for \"%s\"\n",
-				master->name);
-			del_mtd_partitions(master);
+		slave = add_one_partition(master, parts + i, i, cur_offset);
+		if (!slave)
 			return -ENOMEM;
-		}
-		list_add(&slave->list, &mtd_partitions);
-
-		/* set up the MTD object for this partition */
-		slave->mtd.type = master->type;
-		slave->mtd.flags = master->flags & ~parts[i].mask_flags;
-		slave->mtd.size = parts[i].size;
-		slave->mtd.writesize = master->writesize;
-		slave->mtd.oobsize = master->oobsize;
-		slave->mtd.oobavail = master->oobavail;
-		slave->mtd.subpage_sft = master->subpage_sft;
-
-		slave->mtd.name = parts[i].name;
-		slave->mtd.owner = master->owner;
-
-		slave->mtd.read = part_read;
-		slave->mtd.write = part_write;
-
-#ifdef MTD_LINUX
-		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;
-		}
-#endif
-
-		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;
-#ifdef MTD_LINUX
-		if (!i && 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;
-#endif
-		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 = parts[i].offset;
-		slave->index = i;
-
-		if (slave->offset == MTDPART_OFS_APPEND)
-			slave->offset = cur_offset;
-		if (slave->offset == MTDPART_OFS_NXTBLK) {
-			slave->offset = cur_offset;
-			if ((cur_offset % master->erasesize) != 0) {
-				/* Round up to next erasesize */
-				slave->offset = ((cur_offset / master->erasesize) + 1) * master->erasesize;
-				printk(KERN_NOTICE "Moving partition %d: "
-				       "0x%08x -> 0x%08x\n", i,
-				       cur_offset, slave->offset);
-			}
-		}
-		if (slave->mtd.size == MTDPART_SIZ_FULL)
-			slave->mtd.size = master->size - slave->offset;
 		cur_offset = slave->offset + slave->mtd.size;
-
-		printk (KERN_NOTICE "0x%08x-0x%08x : \"%s\"\n", slave->offset,
-			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 ("mtd: partition \"%s\" is out of reach -- disabled\n",
-				parts[i].name);
-		}
-		if (slave->offset + slave->mtd.size > master->size) {
-			slave->mtd.size = master->size - slave->offset;
-			printk ("mtd: partition \"%s\" extends beyond the end of device \"%s\" -- size truncated to %#x\n",
-				parts[i].name, master->name, slave->mtd.size);
-		}
-		if (master->numeraseregions>1) {
-			/* Deal with variable erase size stuff */
-			int i;
-			struct mtd_erase_region_info *regions = master->eraseregions;
-
-			/* Find the first erase regions which is part of this partition. */
-			for (i=0; i < master->numeraseregions && slave->offset >= regions[i].offset; i++)
-				;
-
-			for (i--; i < master->numeraseregions && slave->offset + slave->mtd.size > regions[i].offset; i++) {
-				if (slave->mtd.erasesize < regions[i].erasesize) {
-					slave->mtd.erasesize = regions[i].erasesize;
-				}
-			}
-		} else {
-			/* Single erase size */
-			slave->mtd.erasesize = master->erasesize;
-		}
-
-		if ((slave->mtd.flags & MTD_WRITEABLE) &&
-		    (slave->offset % slave->mtd.erasesize)) {
-			/* 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 ("mtd: partition \"%s\" doesn't start on an erase block boundary -- force read-only\n",
-				parts[i].name);
-		}
-		if ((slave->mtd.flags & MTD_WRITEABLE) &&
-		    (slave->mtd.size % slave->mtd.erasesize)) {
-			slave->mtd.flags &= ~MTD_WRITEABLE;
-			printk ("mtd: partition \"%s\" doesn't end on an erase block -- force read-only\n",
-				parts[i].name);
-		}
-
-		slave->mtd.ecclayout = master->ecclayout;
-		if (master->block_isbad) {
-			uint32_t offs = 0;
-
-			while(offs < slave->mtd.size) {
-				if (master->block_isbad(master,
-							offs + slave->offset))
-					slave->mtd.ecc_stats.badblocks++;
-				offs += slave->mtd.erasesize;
-			}
-		}
-
-#ifdef MTD_LINUX
-		if (parts[i].mtdp) {
-			/* store the object pointer
-			 * (caller may or may not register it */
-			*parts[i].mtdp = &slave->mtd;
-			slave->registered = 0;
-		} else {
-			/* register our partition */
-			add_mtd_device(&slave->mtd);
-			slave->registered = 1;
-		}
-#else
-		/* register our partition */
-		add_mtd_device(&slave->mtd);
-		slave->registered = 1;
-#endif
 	}
 
 	return 0;
 }
-
-#ifdef MTD_LINUX
-EXPORT_SYMBOL(add_mtd_partitions);
-EXPORT_SYMBOL(del_mtd_partitions);
-#endif