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kernel: mtk_bmt: pass number of bitflips on read to the caller

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Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau
2022-01-09 20:18:27 +01:00
parent b86452f841
commit 0ddead0897
1 changed files with 9 additions and 2 deletions
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11
target/linux/generic/files/drivers/mtd/nand/mtk_bmt.c
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@@ -497,6 +497,7 @@ mtk_bmt_read(struct mtd_info *mtd, loff_t from,
int retry_count = 0; int retry_count = 0;
loff_t cur_from; loff_t cur_from;
int ret = 0; int ret = 0;
int max_bitflips = 0;
ops->retlen = 0; ops->retlen = 0;
ops->oobretlen = 0; ops->oobretlen = 0;
@@ -518,12 +519,14 @@ mtk_bmt_read(struct mtd_info *mtd, loff_t from,
cur_ret = bmtd._read_oob(mtd, cur_from, &cur_ops); cur_ret = bmtd._read_oob(mtd, cur_from, &cur_ops);
if (cur_ret < 0) if (cur_ret < 0)
ret = cur_ret; ret = cur_ret;
else
max_bitflips = max_t(int, max_bitflips, cur_ret);
if (cur_ret < 0 && !mtd_is_bitflip(cur_ret)) { if (cur_ret < 0 && !mtd_is_bitflip(cur_ret)) {
update_bmt(block, mtd->erasesize); update_bmt(block, mtd->erasesize);
if (retry_count++ < 10) if (retry_count++ < 10)
continue; continue;
return ret; goto out;
} }
ops->retlen += cur_ops.retlen; ops->retlen += cur_ops.retlen;
@@ -541,7 +544,11 @@ mtk_bmt_read(struct mtd_info *mtd, loff_t from,
retry_count = 0; retry_count = 0;
} }
return ret; out:
if (ret < 0)
return ret;
return max_bitflips;
} }
static int static int