[PATCH v2 12/51] mtd: nand: omap2: use mtd_ooblayout_xxx() helpers where appropriate

Boris Brezillon
2016-02-04T10:27:12Z

The mtd_ooblayout_xxx() helper functions have been added to avoid direct
accesses to the ecclayout field, and thus ease for future reworks.
Use these helpers in all places where the oobfree[] and eccpos[] arrays
where directly accessed.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
---
drivers/mtd/nand/omap2.c | 23 ++++++++++++-----------
1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
index 0749ca1..4ebf16b 100644
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -1495,9 +1495,8 @@ static int omap_elm_correct_data(struct mtd_info *mtd, u_char *data,
static int omap_write_page_bch(struct mtd_info *mtd, struct nand_chip *chip,
const uint8_t *buf, int oob_required, int page)
{
- int i;
+ int ret;
uint8_t *ecc_calc = chip->buffers->ecccalc;
- uint32_t *eccpos = chip->ecc.layout->eccpos;

/* Enable GPMC ecc engine */
chip->ecc.hwctl(mtd, NAND_ECC_WRITE);
@@ -1508,8 +1507,10 @@ static int omap_write_page_bch(struct mtd_info *mtd, struct nand_chip *chip,
/* Update ecc vector from GPMC result registers */
chip->ecc.calculate(mtd, buf, &ecc_calc[0]);

- for (i = 0; i < chip->ecc.total; i++)
- chip->oob_poi[eccpos[i]] = ecc_calc[i];
+ ret = mtd_ooblayout_set_eccbytes(mtd, ecc_calc, chip->oob_poi, 0,
+ chip->ecc.total);
+ if (ret)
+ return ret;

/* Write ecc vector to OOB area */
chip->write_buf(mtd, chip->oob_poi, mtd->oobsize);
@@ -1536,10 +1537,7 @@ static int omap_read_page_bch(struct mtd_info *mtd, struct nand_chip *chip,
{
uint8_t *ecc_calc = chip->buffers->ecccalc;
uint8_t *ecc_code = chip->buffers->ecccode;
- uint32_t *eccpos = chip->ecc.layout->eccpos;
- uint8_t *oob = &chip->oob_poi[eccpos[0]];
- uint32_t oob_pos = mtd->writesize + chip->ecc.layout->eccpos[0];
- int stat;
+ int stat, ret;
unsigned int max_bitflips = 0;

/* Enable GPMC ecc engine */
@@ -1549,13 +1547,16 @@ static int omap_read_page_bch(struct mtd_info *mtd, struct nand_chip *chip,
chip->read_buf(mtd, buf, mtd->writesize);

/* Read oob bytes */
- chip->cmdfunc(mtd, NAND_CMD_RNDOUT, oob_pos, -1);
- chip->read_buf(mtd, oob, chip->ecc.total);
+ chip->cmdfunc(mtd, NAND_CMD_RNDOUT, mtd->writesize, -1);
+ chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);

/* Calculate ecc bytes */
chip->ecc.calculate(mtd, buf, ecc_calc);

- memcpy(ecc_code, &chip->oob_poi[eccpos[0]], chip->ecc.total);
+ ret = mtd_ooblayout_get_eccbytes(mtd, ecc_code, chip->oob_poi, 0,
+ chip->ecc.total);
+ if (ret)
+ return ret;

stat = chip->ecc.correct(mtd, buf, ecc_code, ecc_calc);

--
2.1.4