From 1824520e7477bedf76bd08c32261c755e6405cd9 Mon Sep 17 00:00:00 2001 From: Daniel Golle Date: Mon, 12 Aug 2024 02:56:41 +0100 Subject: [PATCH] mtd: spinand: set bitflip_threshold to 75% of ECC strength Reporting an unclean read from SPI-NAND only when the maximum number of correctable bitflip errors has been hit seems a bit late. UBI LEB scrubbing, which depends on the lower MTD device reporting correctable bitflips, then only kicks in when it's almost too late. Set bitflip_threshold to 75% of the ECC strength, which is also the default for raw NAND. Signed-off-by: Daniel Golle Reviewed-by: Frieder Schrempf Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/2117e387260b0a96f95b8e1652ff79e0e2d71d53.1723427450.git.daniel@makrotopia.org --- drivers/mtd/nand/spi/core.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/mtd/nand/spi/core.c +++ b/drivers/mtd/nand/spi/core.c @@ -1287,6 +1287,7 @@ static int spinand_init(struct spinand_d /* Propagate ECC information to mtd_info */ mtd->ecc_strength = nanddev_get_ecc_conf(nand)->strength; mtd->ecc_step_size = nanddev_get_ecc_conf(nand)->step_size; + mtd->bitflip_threshold = DIV_ROUND_UP(mtd->ecc_strength * 3, 4); ret = spinand_create_dirmaps(spinand); if (ret) {