diff options
Diffstat (limited to 'drivers/mtd/spi-nor/swp.c')
| -rw-r--r-- | drivers/mtd/spi-nor/swp.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/mtd/spi-nor/swp.c b/drivers/mtd/spi-nor/swp.c index 5ab9d5324860..585813310ee1 100644 --- a/drivers/mtd/spi-nor/swp.c +++ b/drivers/mtd/spi-nor/swp.c @@ -34,17 +34,22 @@ static u8 spi_nor_get_sr_tb_mask(struct spi_nor *nor) static u64 spi_nor_get_min_prot_length_sr(struct spi_nor *nor) { unsigned int bp_slots, bp_slots_needed; + /* + * sector_size will eventually be replaced with the max erase size of + * the flash. For now, we need to have that ugly default. + */ + unsigned int sector_size = nor->info->sector_size ?: SPI_NOR_DEFAULT_SECTOR_SIZE; + u64 n_sectors = div_u64(nor->params->size, sector_size); u8 mask = spi_nor_get_sr_bp_mask(nor); /* Reserved one for "protect none" and one for "protect all". */ bp_slots = (1 << hweight8(mask)) - 2; - bp_slots_needed = ilog2(nor->info->n_sectors); + bp_slots_needed = ilog2(n_sectors); if (bp_slots_needed > bp_slots) - return nor->info->sector_size << - (bp_slots_needed - bp_slots); + return sector_size << (bp_slots_needed - bp_slots); else - return nor->info->sector_size; + return sector_size; } static void spi_nor_get_locked_range_sr(struct spi_nor *nor, u8 sr, loff_t *ofs, |