mtd: nand: lpc32xx: use mtd_ooblayout_xxx() helpers where appropriate

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>

diff --git a/drivers/mtd/nand/lpc32xx_slc.c b/drivers/mtd/nand/lpc32xx_slc.c
index 3b8f3735f3e86324f36b0bd4484aab2cda571fb9..10cf8e6223bce2b94ec06ab3dfb83e44f3545147 100644 (file)
--- a/drivers/mtd/nand/lpc32xx_slc.c
+++ b/drivers/mtd/nand/lpc32xx_slc.c
@@ -604,7 +604,8 @@ static int lpc32xx_nand_read_page_syndrome(struct mtd_info *mtd,
                                           int oob_required, int page)
 {
        struct lpc32xx_nand_host *host = nand_get_controller_data(chip);
-       int stat, i, status;
+       struct mtd_oob_region oobregion = { };
+       int stat, i, status, error;
        uint8_t *oobecc, tmpecc[LPC32XX_ECC_SAVE_SIZE];
 
        /* Issue read command */
@@ -620,7 +621,11 @@ static int lpc32xx_nand_read_page_syndrome(struct mtd_info *mtd,
        lpc32xx_slc_ecc_copy(tmpecc, (uint32_t *) host->ecc_buf, chip->ecc.steps);
 
        /* Pointer to ECC data retrieved from NAND spare area */
-       oobecc = chip->oob_poi + chip->ecc.layout->eccpos[0];
+       error = mtd_ooblayout_ecc(mtd, 0, &oobregion);
+       if (error)
+               return error;
+
+       oobecc = chip->oob_poi + oobregion.offset;
 
        for (i = 0; i < chip->ecc.steps; i++) {
                stat = chip->ecc.correct(mtd, buf, oobecc,
@@ -666,7 +671,8 @@ static int lpc32xx_nand_write_page_syndrome(struct mtd_info *mtd,
                                            int oob_required, int page)
 {
        struct lpc32xx_nand_host *host = nand_get_controller_data(chip);
-       uint8_t *pb = chip->oob_poi + chip->ecc.layout->eccpos[0];
+       struct mtd_oob_region oobregion = { };
+       uint8_t *pb;
        int error;
 
        /* Write data, calculate ECC on outbound data */
@@ -678,6 +684,11 @@ static int lpc32xx_nand_write_page_syndrome(struct mtd_info *mtd,
         * The calculated ECC needs some manual work done to it before
         * committing it to NAND. Process the calculated ECC and place
         * the resultant values directly into the OOB buffer. */
+       error = mtd_ooblayout_ecc(mtd, 0, &oobregion);
+       if (error)
+               return error;
+
+       pb = chip->oob_poi + oobregion.offset;
        lpc32xx_slc_ecc_copy(pb, (uint32_t *)host->ecc_buf, chip->ecc.steps);
 
        /* Write ECC data to device */