Commit a894cf6c5a82 ("mtd: nand: mxc: switch to mtd_ooblayout_ops") introduced a bug in the OOB layout description. Even if the driver claims that 3 ECC bytes are reserved to protect 512 bytes of data, it's actually 5 ECC bytes to protect 512+6 bytes of data (some OOB bytes are also protected using extra ECC bytes). Fix the mxc_v1_ooblayout_{free,ecc}() functions to reflect this behavior. Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx> Fixes: a894cf6c5a82 ("mtd: nand: mxc: switch to mtd_ooblayout_ops") Cc: <stable@xxxxxxxxxxxxxxx> --- drivers/mtd/nand/mxc_nand.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index 61ca020c5272..c19ec4f0983e 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -886,7 +886,7 @@ static int mxc_v1_ooblayout_ecc(struct mtd_info *mtd, int section, return -ERANGE; oobregion->offset = (section * 16) + 6; - oobregion->length = nand_chip->ecc.bytes; + oobregion->length = 5; return 0; } @@ -908,8 +908,7 @@ static int mxc_v1_ooblayout_free(struct mtd_info *mtd, int section, oobregion->length = 4; } } else { - oobregion->offset = ((section - 1) * 16) + - nand_chip->ecc.bytes + 6; + oobregion->offset = ((section - 1) * 16) + 5 + 6; if (section < nand_chip->ecc.steps) oobregion->length = (section * 16) + 6 - oobregion->offset; -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html