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mtd: nand: denali: Avoid using ecc->code_buf as a temporary buffer

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ECC bytes are contiguous in the ->oob_poi buffer, which means we don't
have to copy them into ->code_buf (here used as a temporary buffer)
before passing them to the nand_check_erased_ecc_chunk() function.

This change will allow us to allocate ecc->{code,calc}_buf only when
ecc->calculate() or ecc->correct() is specified.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Boris Brezillon 2017-12-05 12:09:28 +01:00
parent 98dea8d719
commit 8c677541bb
1 changed files with 3 additions and 7 deletions
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10
drivers/mtd/nand/denali.c
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@ -330,16 +330,12 @@ static int denali_check_erased_page(struct mtd_info *mtd,
unsigned long uncor_ecc_flags,
unsigned int max_bitflips)
{
uint8_t *ecc_code = chip->ecc.code_buf;
struct denali_nand_info *denali = mtd_to_denali(mtd);
uint8_t *ecc_code = chip->oob_poi + denali->oob_skip_bytes;
int ecc_steps = chip->ecc.steps;
int ecc_size = chip->ecc.size;
int ecc_bytes = chip->ecc.bytes;
int i, ret, stat;
ret = mtd_ooblayout_get_eccbytes(mtd, ecc_code, chip->oob_poi, 0,
chip->ecc.total);
if (ret)
return ret;
int i, stat;
for (i = 0; i < ecc_steps; i++) {
if (!(uncor_ecc_flags & BIT(i)))