diff options
| -rw-r--r-- | drivers/mtd/cfi_mtd.c | 35 |
1 files changed, 18 insertions, 17 deletions
diff --git a/drivers/mtd/cfi_mtd.c b/drivers/mtd/cfi_mtd.c index 34748dda2..6a0cab305 100644 --- a/drivers/mtd/cfi_mtd.c +++ b/drivers/mtd/cfi_mtd.c @@ -161,8 +161,8 @@ static int cfi_mtd_set_erasesize(struct mtd_info *mtd, flash_info_t *fi) int sect; int regions = 0; int numblocks = 0; - ulong offset = 0; - ulong base_addr = fi->start[0]; + ulong offset; + ulong base_addr; /* * First detect the number of eraseregions so that we can allocate @@ -174,29 +174,35 @@ static int cfi_mtd_set_erasesize(struct mtd_info *mtd, flash_info_t *fi) sect_size_old = flash_sector_size(fi, sect); } + switch (regions) { + case 0: + return 1; + case 1: /* flash has uniform erase size */ + mtd->numeraseregions = 0; + mtd->erasesize = sect_size_old; + return 0; + } + + mtd->numeraseregions = regions; mtd->eraseregions = malloc(sizeof(struct mtd_erase_region_info) * regions); /* * Now detect the largest sector and fill the eraseregions */ - sect_size_old = 0; regions = 0; + base_addr = offset = fi->start[0]; + sect_size_old = flash_sector_size(fi, 0); for (sect = 0; sect < fi->sector_count; sect++) { - if ((sect_size_old != flash_sector_size(fi, sect)) && - (sect_size_old != 0)) { + if (sect_size_old != flash_sector_size(fi, sect)) { mtd->eraseregions[regions].offset = offset - base_addr; mtd->eraseregions[regions].erasesize = sect_size_old; mtd->eraseregions[regions].numblocks = numblocks; - /* Now start counting the next eraseregions */ numblocks = 0; regions++; - } else { - numblocks++; - } - - if (sect_size_old != flash_sector_size(fi, sect)) offset = fi->start[sect]; + } + numblocks++; /* * Select the largest sector size as erasesize (e.g. for UBI) @@ -212,12 +218,7 @@ static int cfi_mtd_set_erasesize(struct mtd_info *mtd, flash_info_t *fi) */ mtd->eraseregions[regions].offset = offset - base_addr; mtd->eraseregions[regions].erasesize = sect_size_old; - mtd->eraseregions[regions].numblocks = numblocks + 1; - - if (regions) - mtd->numeraseregions = regions + 1; - else - mtd->numeraseregions = 0; + mtd->eraseregions[regions].numblocks = numblocks; mtd->erasesize = sect_size; |