From 7a1894a955cc3bf0be0851421d6603c3b5c78323 Mon Sep 17 00:00:00 2001 From: Frieder Schrempf Date: Wed, 17 Apr 2019 12:36:37 +0000 Subject: [PATCH] mtd: rawnand: ESMT: Also use the last page for bad block markers It is known that some ESMT SLC NANDs have been shipped with the factory bad block markers in the first or last page of the block, instead of the first or second page. To be on the safe side, let's check all three locations. Signed-off-by: Frieder Schrempf Reviewed-by: Boris Brezillon Reviewed-by: Miquel Raynal Signed-off-by: Miquel Raynal --- drivers/mtd/nand/raw/nand_esmt.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/nand/raw/nand_esmt.c b/drivers/mtd/nand/raw/nand_esmt.c index 58646ed663ac..3338c68aaaf1 100644 --- a/drivers/mtd/nand/raw/nand_esmt.c +++ b/drivers/mtd/nand/raw/nand_esmt.c @@ -36,7 +36,14 @@ static void esmt_nand_decode_id(struct nand_chip *chip) static int esmt_nand_init(struct nand_chip *chip) { if (nand_is_slc(chip)) - chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE; + /* + * It is known that some ESMT SLC NANDs have been shipped + * with the factory bad block markers in the first or last page + * of the block, instead of the first or second page. To be on + * the safe side, let's check all three locations. + */ + chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE | + NAND_BBM_LASTPAGE; return 0; }