mtd_device_parse_register(9)

💖 mtd_device_parse_register(9) 💖

okay bestie, welcome to the Kernel API Manual page for mtd_device_parse_register(9) — this is the one that parses partitions and registers an MTD device, and it's lowkey a whole little pipeline. 🎀

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🌸 NAME 🌸

mtd_device_parse_register — parse partitions and register an MTD device.

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✨ SYNOPSIS ✨

       int mtd_device_parse_register (struct mtd_info *mtd , const char * const
       *types , struct mtd_part_parser_data *parser_data , const struct
       mtd_partition *parts , int nr_parts );

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🎀 ARGUMENTS 🎀

• mtd — the MTD device to register. main character energy, fr.
• types — the list of MTD partition probes to try, see
• parser_data — MTD partition parser-specific data
• parts — fallback partition information to register, if parsing fails; only valid if nr_parts > 0
• nr_parts — the number of partitions in parts, if zero then the full MTD device is registered if no partition info is found

ngl, parts is the backup plan: it only does anything when nr_parts > 0, so don't sleep on that check. 🫶

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🦋 DESCRIPTION 🦋

okay so this function aggregates MTD partitions parsing — it basically follows the most common pattern found in many MTD drivers:

• If the MTD_PARTITIONED_MASTER option is set, then the device as a whole is registered first. 👑
• Then it tries to probe partitions on MTD device mtd using parsers specified in types (if types is NULL, then the default list of parsers is used, see parse_mtd_partitions for more information). If none are found this function tries to fallback to information specified in parts/nr_parts. 🧚
• If no partitions were found this function just registers the MTD device mtd and exits. periodt. 💅

Returns zero in case of success and a negative error code in case of failure.

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💜 SEE ALSO 💜

Kernel file ./drivers/mtd/mtdcore.c — mtd_wunit_to_pairing_info(9), mtd_pairing_info_to_wunit(9), mtd_pairing_groups(9), add_mtd_device(9), del_mtd_device(9), mtd_device_unregister(9), register_mtd_user(9), unregister_mtd_user(9), get_mtd_device(9), of_get_mtd_device_by_node(9), get_mtd_device_nm(9), mtd_ooblayout_ecc(9), mtd_ooblayout_free(9), mtd_ooblayout_find_region(9), mtd_ooblayout_find_eccregion(9), mtd_ooblayout_get_bytes(9), mtd_ooblayout_set_bytes(9), mtd_ooblayout_count_bytes(9), mtd_ooblayout_get_eccbytes(9), mtd_ooblayout_set_eccbytes(9), mtd_ooblayout_get_databytes(9), mtd_ooblayout_set_databytes(9), mtd_ooblayout_count_freebytes(9), mtd_ooblayout_count_eccbytes(9), mtd_kmalloc_up_to(9)

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source/version: ./drivers/mtd · date: October 2026 · page: mtd_device_parse_register(9) — mwah, go register something cute 💋🌈