diff options
Diffstat (limited to 'drivers/mtd/nand/raw/nand_base.c')
| -rw-r--r-- | drivers/mtd/nand/raw/nand_base.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index 57a583149cc0..3d6c6e880520 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -5228,12 +5228,18 @@ static bool of_get_nand_on_flash_bbt(struct device_node *np) static int of_get_nand_secure_regions(struct nand_chip *chip) { struct device_node *dn = nand_get_flash_node(chip); + struct property *prop; int nr_elem, i, j; - nr_elem = of_property_count_elems_of_size(dn, "secure-regions", sizeof(u64)); - if (!nr_elem) + /* Only proceed if the "secure-regions" property is present in DT */ + prop = of_find_property(dn, "secure-regions", NULL); + if (!prop) return 0; + nr_elem = of_property_count_elems_of_size(dn, "secure-regions", sizeof(u64)); + if (nr_elem <= 0) + return nr_elem; + chip->nr_secure_regions = nr_elem / 2; chip->secure_regions = kcalloc(chip->nr_secure_regions, sizeof(*chip->secure_regions), GFP_KERNEL); |