From cb2bf403a462082a253fe0a94cfec020285ffbd8 Mon Sep 17 00:00:00 2001 From: Chris Packham Date: Wed, 18 Jul 2018 10:42:18 +0200 Subject: [PATCH] mtd: rawnand: micron: allow forced on-die ECC Some Micron NAND chips have on-die ECC forceably enabled. Allow such chips to be used as long as the controller has set chip->ecc.mode to NAND_ECC_ON_DIE. Signed-off-by: Chris Packham Reviewed-by: Boris Brezillon Signed-off-by: Boris Brezillon Signed-off-by: Miquel Raynal --- drivers/mtd/nand/raw/nand_micron.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/mtd/nand/raw/nand_micron.c b/drivers/mtd/nand/raw/nand_micron.c index f8839c7f7464..fd3f68e0909f 100644 --- a/drivers/mtd/nand/raw/nand_micron.c +++ b/drivers/mtd/nand/raw/nand_micron.c @@ -374,7 +374,8 @@ static int micron_nand_init(struct nand_chip *chip) ondie = micron_supports_on_die_ecc(chip); - if (ondie == MICRON_ON_DIE_MANDATORY) { + if (ondie == MICRON_ON_DIE_MANDATORY && + chip->ecc.mode != NAND_ECC_ON_DIE) { pr_err("On-die ECC forcefully enabled, not supported\n"); return -EINVAL; } @@ -398,8 +399,14 @@ static int micron_nand_init(struct nand_chip *chip) chip->ecc.algo = NAND_ECC_BCH; chip->ecc.read_page = micron_nand_read_page_on_die_ecc; chip->ecc.write_page = micron_nand_write_page_on_die_ecc; - chip->ecc.read_page_raw = nand_read_page_raw; - chip->ecc.write_page_raw = nand_write_page_raw; + + if (ondie == MICRON_ON_DIE_MANDATORY) { + chip->ecc.read_page_raw = nand_read_page_raw_notsupp; + chip->ecc.write_page_raw = nand_write_page_raw_notsupp; + } else { + chip->ecc.read_page_raw = nand_read_page_raw; + chip->ecc.write_page_raw = nand_write_page_raw; + } } return 0; -- 2.30.2