On Tue, 6 Mar 2018 11:13:25 +0800
欧阳志忠 <oyzhizh...@gmail.com> wrote:
> Section was not properly computed. The value of OOB region definition is
> always ECC section 0 information in the OOB area, but we want to get all
> the ECC bytes information, so we should call
> mtd_ooblayout_ecc(mtd, section++, &oobregion) until it returns -ERANGE.
>
You still miss the Fixes and Cc-stable tags:
Fixes: c2b78452a9db ("mtd: use mtd_ooblayout_xxx() helpers where appropriate")
Cc: <sta...@vger.kernel.org>
Looks good otherwise.
I'm just curious, how did you find the problem? Do you have a userspace
tool that queries the OOB/ECC layout?
> Signed-off-by: OuYang ZhiZhong <oyzhizh...@gmail.com>
> ---
> drivers/mtd/mtdchar.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
> index de8c902..7d80a8b 100644
> --- a/drivers/mtd/mtdchar.c
> +++ b/drivers/mtd/mtdchar.c
> @@ -479,7 +479,7 @@ static int shrink_ecclayout(struct mtd_info *mtd,
> for (i = 0; i < MTD_MAX_ECCPOS_ENTRIES;) {
> u32 eccpos;
>
> - ret = mtd_ooblayout_ecc(mtd, section, &oobregion);
> + ret = mtd_ooblayout_ecc(mtd, section++, &oobregion);
> if (ret < 0) {
> if (ret != -ERANGE)
> return ret;
> @@ -526,7 +526,7 @@ static int get_oobinfo(struct mtd_info *mtd, struct
> nand_oobinfo *to)
> for (i = 0; i < ARRAY_SIZE(to->eccpos);) {
> u32 eccpos;
>
> - ret = mtd_ooblayout_ecc(mtd, section, &oobregion);
> + ret = mtd_ooblayout_ecc(mtd, section++, &oobregion);
> if (ret < 0) {
> if (ret != -ERANGE)
> return ret;
--
Boris Brezillon, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com
