[PATCH] mtdchar: fix usage of mtd_ooblayout_ecc()

From: OuYang ZhiZhong
Date: Mon Mar 05 2018 - 09:53:58 EST


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.

This is fixed by using i instead of section.

Signed-off-by: OuYang ZhiZhong <oyzhizhong@xxxxxxxxx>
---
drivers/mtd/mtdchar.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index de8c902..0cc929e 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -468,7 +468,7 @@ static int shrink_ecclayout(struct mtd_info *mtd,
struct nand_ecclayout_user *to)
{
struct mtd_oob_region oobregion;
- int i, section = 0, ret;
+ int i, ret;

if (!mtd || !to)
return -EINVAL;
@@ -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, i, &oobregion);
if (ret < 0) {
if (ret != -ERANGE)
return ret;
@@ -515,7 +515,7 @@ static int shrink_ecclayout(struct mtd_info *mtd,
static int get_oobinfo(struct mtd_info *mtd, struct nand_oobinfo *to)
{
struct mtd_oob_region oobregion;
- int i, section = 0, ret;
+ int i, ret;

if (!mtd || !to)
return -EINVAL;
@@ -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, i, &oobregion);
if (ret < 0) {
if (ret != -ERANGE)
return ret;
--
1.7.9.5