+@@ -533,8 +537,10 @@ out_register:
+ return slave;
+ }
+
+-int mtd_add_partition(struct mtd_info *master, char *name,
+- long long offset, long long length)
++
++static int
++__mtd_add_partition(struct mtd_info *master, char *name,
++ long long offset, long long length, bool dup_check)
+ {
+ struct mtd_partition part;
+ struct mtd_part *p, *new;
+@@ -566,21 +572,24 @@ int mtd_add_partition(struct mtd_info *m
+ 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;
+- }
++ if (dup_check) {
++ 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);
++ mtd_partition_split(master, new);
+
+ return ret;
+ err_inv:
+@@ -590,6 +599,12 @@ err_inv:
+ }
+ EXPORT_SYMBOL_GPL(mtd_add_partition);
+
++int mtd_add_partition(struct mtd_info *master, char *name,
++ long long offset, long long length)
++{
++ return __mtd_add_partition(master, name, offset, length, true);
++}
++
+ int mtd_del_partition(struct mtd_info *master, int partno)
+ {
+ struct mtd_part *slave, *next;
+@@ -613,6 +628,149 @@ int mtd_del_partition(struct mtd_info *m