From: Hector Palacios Date: Fri, 4 Jul 2025 09:41:09 +0000 (+0200) Subject: mtd: rawnand: hynix: don't try read-retry on SLC NANDs X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=125100566b8f830365a85930d85134f7dba3b99b;p=thirdparty%2Flinux.git mtd: rawnand: hynix: don't try read-retry on SLC NANDs Some SLC NANDs like H27U4G8F2D expose a valid JEDEC ID yet they don't support the read-retry mechanism, and fail. Since SLC NANDs don't require read-retry, continue only if the bits per cell is bigger than 1. Signed-off-by: Hector Palacios Signed-off-by: Miquel Raynal --- diff --git a/drivers/mtd/nand/raw/nand_hynix.c b/drivers/mtd/nand/raw/nand_hynix.c index c02e50608816a..b663659b2f490 100644 --- a/drivers/mtd/nand/raw/nand_hynix.c +++ b/drivers/mtd/nand/raw/nand_hynix.c @@ -377,9 +377,9 @@ static int hynix_nand_rr_init(struct nand_chip *chip) /* * We only support read-retry for 1xnm NANDs, and those NANDs all - * expose a valid JEDEC ID. + * expose a valid JEDEC ID. SLC NANDs don't require read-retry. */ - if (valid_jedecid) { + if (valid_jedecid && nanddev_bits_per_cell(&chip->base) > 1) { u8 nand_tech = chip->id.data[5] >> 4; /* 1xnm technology */