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.

Fixes: c2b78452a9db ("mtd: use mtd_ooblayout_xxx() helpers where appropriate")
Cc: <sta...@vger.kernel.org>
Signed-off-by: OuYang ZhiZhong <ou...@yealink.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;
-- 
1.7.9.5

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