pkey_handler_key_to_protkey
rc = pkey_handler_key_to_protkey(&apqn, 1,
rc = pkey_handler_key_to_protkey(NULL, 0,
rc = pkey_handler_key_to_protkey(apqns, nr_apqns,
EXPORT_SYMBOL(pkey_handler_key_to_protkey);
int pkey_handler_key_to_protkey(const struct pkey_apqn *apqns, size_t nr_apqns,