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mtd: mtdpart: implement proper partition handling

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Instead of collecting partitions in a flat list, create a hierarchy
within the mtd_info structure: use a partitions list to keep track of
the partitions of an MTD device (which might be itself a partition of
another MTD device), a pointer to the parent device (NULL when the MTD
device is the root one, not a partition).

By also saving directly in mtd_info the offset of the partition, we
can get rid of the mtd_part structure.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
This commit is contained in:
Miquel Raynal 2018-09-29 12:58:27 +02:00 • committed by Jagan Teki
parent ff4afa8a98
commit 2a74930da5
4 changed files with 209 additions and 239 deletions
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1
include/linux/mtd/partitions.h
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@ -81,7 +81,6 @@ extern void register_mtd_parser(struct mtd_part_parser *parser);
extern void deregister_mtd_parser(struct mtd_part_parser *parser);
#endif
int mtd_is_partition(const struct mtd_info *mtd);
int mtd_add_partition(struct mtd_info *master, const char *name,
long long offset, long long length);
int mtd_del_partition(struct mtd_info *master, int partno);