diff options
Diffstat (limited to 'drivers/mtd/mtdcore.c')
| -rw-r--r-- | drivers/mtd/mtdcore.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index f80e911b8843..642c35dde686 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -503,6 +503,11 @@ int add_mtd_device(struct mtd_info *mtd) return -EEXIST; BUG_ON(mtd->writesize == 0); + + if (WARN_ON((!mtd->erasesize || !mtd->_erase) && + !(mtd->flags & MTD_NO_ERASE))) + return -EINVAL; + mutex_lock(&mtd_table_mutex); i = idr_alloc(&mtd_idr, mtd, 0, 0, GFP_KERNEL); |