- char *status = get_property(dn, "status", NULL);
- u32 *class_code = (u32 *)get_property(dn, "class-code", NULL);
- u32 *vendor_id = (u32 *)get_property(dn, "vendor-id", NULL);
- u32 *device_id = (u32 *)get_property(dn, "device-id", NULL);
+ char *status = get_property(dn, "status", 0);
+ u32 *class_code = (u32 *)get_property(dn, "class-code", 0);
+ u32 *vendor_id = (u32 *)get_property(dn, "vendor-id", 0);
+ u32 *device_id = (u32 *)get_property(dn, "device-id", 0);