diff options
| -rw-r--r-- | drivers/mtd/chips/amd_flash.c | 1 | ||||
| -rw-r--r-- | drivers/mtd/chips/cfi_cmdset_0002.c | 1 | ||||
| -rw-r--r-- | drivers/mtd/chips/sharp.c | 1 | ||||
| -rw-r--r-- | drivers/mtd/devices/lart.c | 1 | ||||
| -rw-r--r-- | drivers/mtd/devices/m25p80.c | 1 | ||||
| -rw-r--r-- | drivers/mtd/devices/mtdram.c | 1 | ||||
| -rw-r--r-- | drivers/mtd/mtdcore.c | 1 | ||||
| -rw-r--r-- | include/linux/mtd/mtd.h | 9 |
8 files changed, 13 insertions, 3 deletions
diff --git a/drivers/mtd/chips/amd_flash.c b/drivers/mtd/chips/amd_flash.c index 9e466509a23..16eaca69fb5 100644 --- a/drivers/mtd/chips/amd_flash.c +++ b/drivers/mtd/chips/amd_flash.c @@ -730,6 +730,7 @@ static struct mtd_info *amd_flash_probe(struct map_info *map) offset += dev_size; } mtd->type = MTD_NORFLASH; + mtd->writesize = 1; mtd->flags = MTD_CAP_NORFLASH; mtd->name = map->name; mtd->erase = amd_flash_erase; diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index 3aeb0c79e71..1e01ad38b26 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -236,6 +236,7 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary) mtd->resume = cfi_amdstd_resume; mtd->flags = MTD_CAP_NORFLASH; mtd->name = map->name; + mtd->writesize = 1; if (cfi->cfi_mode==CFI_MODE_CFI){ unsigned char bootloc; diff --git a/drivers/mtd/chips/sharp.c b/drivers/mtd/chips/sharp.c index 3cc0b23c586..967abbecdff 100644 --- a/drivers/mtd/chips/sharp.c +++ b/drivers/mtd/chips/sharp.c @@ -140,6 +140,7 @@ static struct mtd_info *sharp_probe(struct map_info *map) mtd->suspend = sharp_suspend; mtd->resume = sharp_resume; mtd->flags = MTD_CAP_NORFLASH; + mtd->writesize = 1; mtd->name = map->name; memset(sharp, 0, sizeof(*sharp)); diff --git a/drivers/mtd/devices/lart.c b/drivers/mtd/devices/lart.c index 29b0ddaa324..4ea50a1dda8 100644 --- a/drivers/mtd/devices/lart.c +++ b/drivers/mtd/devices/lart.c @@ -635,6 +635,7 @@ int __init lart_flash_init (void) printk ("%s: This looks like a LART board to me.\n",module_name); mtd.name = module_name; mtd.type = MTD_NORFLASH; + mtd.writesize = 1; mtd.flags = MTD_CAP_NORFLASH; mtd.size = FLASH_BLOCKSIZE_PARAM * FLASH_NUMBLOCKS_16m_PARAM + FLASH_BLOCKSIZE_MAIN * FLASH_NUMBLOCKS_16m_MAIN; mtd.erasesize = FLASH_BLOCKSIZE_MAIN; diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 04e65d5dae0..a8466141e91 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -465,6 +465,7 @@ static int __devinit m25p_probe(struct spi_device *spi) flash->mtd.name = spi->dev.bus_id; flash->mtd.type = MTD_NORFLASH; + flash->mtd.writesize = 1; flash->mtd.flags = MTD_CAP_NORFLASH; flash->mtd.size = info->sector_size * info->n_sectors; flash->mtd.erasesize = info->sector_size; diff --git a/drivers/mtd/devices/mtdram.c b/drivers/mtd/devices/mtdram.c index f284c9670be..8ab4b931215 100644 --- a/drivers/mtd/devices/mtdram.c +++ b/drivers/mtd/devices/mtdram.c @@ -106,6 +106,7 @@ int mtdram_init_device(struct mtd_info *mtd, void *mapped_address, mtd->type = MTD_GENERIC_TYPE; mtd->flags = MTD_CAP_RAM; mtd->size = size; + mtd->writesize = 1; mtd->erasesize = MTDRAM_ERASE_SIZE; mtd->priv = mapped_address; diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index 49bc9fdcb88..16a952dd486 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -47,6 +47,7 @@ int add_mtd_device(struct mtd_info *mtd) { int i; + BUG_ON(mtd->writesize == 0); mutex_lock(&mtd_table_mutex); for (i=0; i < MAX_MTD_DEVICES; i++) diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 9536567d041..e1d2a3d5654 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -110,9 +110,12 @@ struct mtd_info { * information below if they desire */ u_int32_t erasesize; - /* Smallest availlable size for writing to the device. For NAND, - * this is the page size, for some NOR chips, the size of ECC - * covered blocks. + /* Minimal writable flash unit size. In case of NOR flash it is 1 (even + * though individual bits can be cleared), in case of NAND flash it is + * one NAND page (or half, or one-fourths of it), in case of ECC-ed NOR + * it is of ECC block size, etc. It is illegal to have writesize = 0. + * Any driver registering a struct mtd_info must ensure a writesize of + * 1 or larger. */ u_int32_t writesize; |