diff options
author | Pekon Gupta <pekon@ti.com> | 2014-03-18 13:26:43 (GMT) |
---|---|---|
committer | Brian Norris <computersforpeace@gmail.com> | 2014-03-20 08:47:59 (GMT) |
commit | de0a4d69e6758bfa5792e7c723a9220eb5be5a32 (patch) | |
tree | 9e3f5e1f0f3c03ac809f47eebe8ad04bbde4c8ae /drivers/mtd/nand/omap2.c | |
parent | 4e558072ef91f0ca681a74c3aef9d6a30c116f2a (diff) | |
download | linux-de0a4d69e6758bfa5792e7c723a9220eb5be5a32.tar.xz |
mtd: nand: omap: ecc.correct: omap_elm_correct_data: rename ambiguous variable 'eccsize' and 'ecc_vector_size'
renaming following variables as they cause confusion due to resemblence to
another similar field in 'struct nand_ecc_ctrl' (nand_chip->ecc.size).
renaming: ecc_vector_size --> ecc->bytes (info->nand.ecc.bytes)
renaming: eccsize --> actual_eccbytes (info->nand.ecc.bytes - 1) for BCH4 and BCH8
Tested-by: Stefan Roese <sr@denx.de>
Signed-off-by: Pekon Gupta <pekon@ti.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/mtd/nand/omap2.c')
-rw-r--r-- | drivers/mtd/nand/omap2.c | 39 |
1 files changed, 23 insertions, 16 deletions
diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c index 403afa7..4bf2f76d 100644 --- a/drivers/mtd/nand/omap2.c +++ b/drivers/mtd/nand/omap2.c @@ -1359,9 +1359,10 @@ static int omap_elm_correct_data(struct mtd_info *mtd, u_char *data, { struct omap_nand_info *info = container_of(mtd, struct omap_nand_info, mtd); + struct nand_ecc_ctrl *ecc = &info->nand.ecc; int eccsteps = info->nand.ecc.steps; int i , j, stat = 0; - int eccsize, eccflag, ecc_vector_size; + int eccflag, actual_eccbytes; struct elm_errorvec err_vec[ERROR_VECTOR_MAX]; u_char *ecc_vec = calc_ecc; u_char *spare_ecc = read_ecc; @@ -1369,6 +1370,20 @@ static int omap_elm_correct_data(struct mtd_info *mtd, u_char *data, enum bch_ecc type; bool is_error_reported = false; + switch (info->ecc_opt) { + case OMAP_ECC_BCH4_CODE_HW: + /* omit 7th ECC byte reserved for ROM code compatibility */ + actual_eccbytes = ecc->bytes - 1; + break; + case OMAP_ECC_BCH8_CODE_HW: + /* omit 14th ECC byte reserved for ROM code compatibility */ + actual_eccbytes = ecc->bytes - 1; + break; + default: + pr_err("invalid driver configuration\n"); + return -EINVAL; + } + /* Initialize elm error vector to zero */ memset(err_vec, 0, sizeof(err_vec)); @@ -1380,14 +1395,6 @@ static int omap_elm_correct_data(struct mtd_info *mtd, u_char *data, erased_ecc_vec = bch4_vector; } - ecc_vector_size = info->nand.ecc.bytes; - - /* - * Remove extra byte padding for BCH8 RBL - * compatibility and erased page handling - */ - eccsize = ecc_vector_size - 1; - for (i = 0; i < eccsteps ; i++) { eccflag = 0; /* initialize eccflag */ @@ -1395,8 +1402,7 @@ static int omap_elm_correct_data(struct mtd_info *mtd, u_char *data, * Check any error reported, * In case of error, non zero ecc reported. */ - - for (j = 0; (j < eccsize); j++) { + for (j = 0; j < actual_eccbytes; j++) { if (calc_ecc[j] != 0) { eccflag = 1; /* non zero ecc, error present */ break; @@ -1421,7 +1427,7 @@ static int omap_elm_correct_data(struct mtd_info *mtd, u_char *data, * zeros are more than threshold erased page, either * case page reported as uncorrectable. */ - if (hweight8(~read_ecc[eccsize]) >= threshold) { + if (hweight8(~read_ecc[actual_eccbytes]) >= threshold) { /* * Update elm error vector as * data area is programmed @@ -1433,7 +1439,8 @@ static int omap_elm_correct_data(struct mtd_info *mtd, u_char *data, int bitflip_count; u_char *buf = &data[info->nand.ecc.size * i]; - if (memcmp(calc_ecc, erased_ecc_vec, eccsize)) { + if (memcmp(calc_ecc, erased_ecc_vec, + actual_eccbytes)) { bitflip_count = erased_sector_bitflips( buf, read_ecc, info); @@ -1446,8 +1453,8 @@ static int omap_elm_correct_data(struct mtd_info *mtd, u_char *data, } /* Update the ecc vector */ - calc_ecc += ecc_vector_size; - read_ecc += ecc_vector_size; + calc_ecc += ecc->bytes; + read_ecc += ecc->bytes; } /* Check if any error reported */ @@ -1496,7 +1503,7 @@ static int omap_elm_correct_data(struct mtd_info *mtd, u_char *data, /* Update page data with sector size */ data += info->nand.ecc.size; - spare_ecc += ecc_vector_size; + spare_ecc += ecc->bytes; } for (i = 0; i < eccsteps; i++) |