nand_ecc_sw_bch_init(9)

💖 NAME 💖

nand_ecc_sw_bch_init — Initialize software BCH ECC engine ✨ this is the Kernel API Manual page for it, bestie 💅

✨ SYNOPSIS ✨

int nand_ecc_sw_bch_init (struct nand_device *nand );

okay so that’s the whole signature — yes, the space before ); is canon, don’t touch it 😌

🫶 ARGUMENTS 🫶

• nand — NAND device 🫶

🎀 RETURN 🎀

The page says: a pointer to a new NAND BCH control structure, or NULL upon failure 😭🫶

🦋 DESCRIPTION 🦋

Okay so this one initializes NAND BCH error correction ✨. It deals with the nand.ecc parameters 'step_size' and m, the Galois field order t, the error correction capability bits, where m is such that 2^m - 1 > step_size * 8 🧚💜

🌸 EXAMPLE 🌸

To configure 4 bit correction per 512 bytes, you should pass step_size = 512 (thus, m = 13 is the smallest integer such that 2^m - 1 > 512 * 8) bytes = 7 (7 bytes are required to store m * t = 13 * 4 = 52 bits) 🌈✨

🔥 SEE ALSO 🔥

• Kernel file ./drivers/mtd/nand/ecc-sw-bch.c 📁
• nand_ecc_sw_bch_calculate(9), nand_ecc_sw_bch_correct(9), nand_ecc_sw_bch_cleanup(9) 👑

okay bye bestie 🫶 this page is from ./drivers/mtd/nand, dated October 2026, and it’s nand_ecc_sw_bch_init(9) from the Kernel API Manual ✨💅