From: Miquel Raynal Date: Wed, 27 Jan 2021 20:30:16 +0000 (+0100) Subject: mtd: nand: Add a helper to retrieve the number of ECC bytes per step X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=ba4a40a483da86d76bd69957c21fcb975b8405ae;p=linux.git mtd: nand: Add a helper to retrieve the number of ECC bytes per step This operation is very common and deserves a helper. It of course only works after the ECC engine initialization. Signed-off-by: Miquel Raynal Tested-by: Adam Ford #logicpd Torpedo Link: https://lore.kernel.org/linux-mtd/20210127203020.9574-6-miquel.raynal@bootlin.com --- diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 8a01163966893..32fc7edf65b33 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -597,6 +597,16 @@ nanddev_get_ecc_nsteps(struct nand_device *nand) return nand->ecc.ctx.nsteps; } +/** + * nanddev_get_ecc_bytes_per_step() - Extract the number of ECC bytes per step + * @nand: NAND device + */ +static inline unsigned int +nanddev_get_ecc_bytes_per_step(struct nand_device *nand) +{ + return nand->ecc.ctx.total / nand->ecc.ctx.nsteps; +} + /** * nanddev_get_ecc_requirements() - Extract the ECC requirements from a NAND * device