STRUCT NAND_ECC_CONTEXT(9)

💖 struct nand_ecc_context(9) 💖

okay so bestie, welcome to the Kernel API Manual — yes we're reading kernel docs together, this is our bonding era 🫶. Today's main character is struct nand_ecc_context, and ngl, she's the lil' bookkeeping baddie that holds the Context for the ECC engine. That's literally her whole job and she does it slayfully. ✨

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🌸 NAME 🌸

struct nand_ecc_context — the Context for the ECC engine, no cap 💅

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⭐ SYNOPSIS ⭐

here's the whole glow-up, copied exactly because we do not freestyle kernel structs in this house 😤

struct nand_ecc_context {
    struct nand_ecc_props conf;
    unsigned int nsteps;
    unsigned int total;
    void *priv;
 };

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🎀 Members 🎀

four fields, four besties, all iconic in their own way 🦋

• conf — the basic ECC engine parameters. like, the vibe settings. the defaults. the whole personality of the engine lives here 💜
• nsteps — number of ECC steps. that's it, that's the field, she's counting steps and she's booked and busy 🔥
• total — total number of bytes used for storing ECC codes. and listen — this one is used by generic OOB layouts, so she's not just decorative, she's load-bearing 👑
• priv — ECC engine driver private data. it's giving "don't look in my bag" energy 🙈, only the driver knows what's in there

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🌈 SEE ALSO 🌈

the whole friend group, iykyk 💀 — first up, the header location herself:

• Kernel file ./include/linux/mtd/nand.h struct

and now the extended squad, all of them, in order, no one left out because we don't do that here 🫶

• struct nand_memory_organization(9), struct nand_row_converter(9), struct nand_pos(9), enum nand_page_io_req_type(9)
• struct nand_page_io_req(9), enum nand_ecc_engine_type(9), enum nand_ecc_placement(9), enum nand_ecc_algo(9)
• struct nand_ecc_props(9), struct nand_bbt(9), struct nand_ops(9), struct nand_ecc_engine_ops(9)
• enum nand_ecc_engine_integration(9), struct nand_ecc_engine(9), struct nand_ecc_req_tweak_ctx(9), struct nand_ecc(9)
• struct nand_device(9), struct nand_io_iter(9), mtd_to_nanddev(9), nanddev_to_mtd(9)
• nanddev_page_size(9), nanddev_per_page_oobsize(9), nanddev_pages_per_eraseblock(9), nanddev_pages_per_target(9)
• nanddev_eraseblocks_per_lun(9), nanddev_eraseblocks_per_target(9), nanddev_target_size(9), nanddev_neraseblocks(9)
• nanddev_size(9), nanddev_get_memorg(9), nanddev_get_ecc_conf(9), nanddev_get_ecc_nsteps(9)
• nanddev_get_ecc_bytes_per_step(9), nanddev_get_ecc_requirements(9), nanddev_set_ecc_requirements(9), nanddev_register(9)
• nanddev_unregister(9), nanddev_set_of_node(9), nanddev_get_of_node(9), nanddev_offs_to_pos(9)
• nanddev_pos_cmp(9), nanddev_pos_to_offs(9), nanddev_pos_to_row(9), nanddev_pos_next_target(9)
• nanddev_pos_next_lun(9), nanddev_pos_next_eraseblock(9), nanddev_pos_next_page(9), nanddev_bbt_pos_to_entry(9)
• nanddev_bbt_is_initialized(9)

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lowkey reminder bestie: every single one of those names is exactly as written — don't go "fixing" the spelling of nanddev or swapping a struct for an enum because the kernel does NOT forgive and will NOT forget 😭

alright that's the whole page, mwah 💋 — this gem dropped from ./include/linux/mtd back in October 2026, and it's still serving struct nand_ecc_context(9) realness to this very day. periodt. 🎀✨👑