_omap_calculate_ecc_bch(9)

💅 _omap_calculate_ecc_bch 💅

okay so bestie, welcome to the Kernel API Manual — this one's a lil function from the kernel's MTD/NAND corner and it's literally about making ECC bytes for a single sector. yes, that kind of math. stay with me 🫶

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✨ NAME ✨

_omap_calculate_ecc_bch — bestie's job is to generate ECC bytes for one sector 😌✨

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🎀 SYNOPSIS 🎀

int _omap_calculate_ecc_bch (struct mtd_info *mtd , const u_char *dat ,
u_char *ecc_calc , int i );

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🌸 ARGUMENTS 🌸

• mtd — the MTD device structure, aka the main character of this whole operation 💫
• dat — the pointer to the data on which ecc is computed. this is the stuff we're doing math on 🧮
• ecc_calc — the ecc_code buffer. it's where the answer goes, no cap 🎯
• i — the sector number (for a multi sector page). lowkey important if you've got a page doing the most 👑

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🦋 DESCRIPTION 🦋

so basically: this function is here to support calculating BCH4/8/16 ECC vectors for one sector within a page. that's the vibe. ✨

and the sector number? that's chillin' in i. iykyk 💅

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🔥 SEE ALSO 🔥

like, go look at the kernel file ./drivers/mtd/nand/raw/omap2.c — it's giving source of truth 🌈 — and also these iconic siblings:

• omap_prefetch_enable(9)
• omap_nand_data_in_pref(9)
• omap_nand_data_out_pref(9)
• omap_nand_data_in_dma_pref(9)
• omap_nand_data_out_dma_pref(9)
• gen_true_ecc(9)
• omap_compare_ecc(9)
• omap_correct_data(9)
• omap_calculate_ecc(9)
• omap_enable_hwecc(9)
• omap_enable_hwecc_bch(9)
• omap_calculate_ecc_bch_sw(9)
• omap_calculate_ecc_bch_multi(9)
• erased_sector_bitflips(9)
• omap_elm_correct_data(9)
• omap_write_page_bch(9)
• omap_write_subpage_bch(9)
• omap_read_page_bch(9)
• is_elm_present(9)

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and that's the whole page, bestie 🫶 this cutie lives in ./drivers/mtd/nand/raw and the manual's dated October 2026 — so yeah, it ate, periodt 💖🎀