crt->setkey = async_setkey;
crt->encrypt = async_encrypt;
crt->decrypt = async_decrypt;
+ if (!alg->ivsize) {
+ crt->givencrypt = skcipher_null_givencrypt;
+ crt->givdecrypt = skcipher_null_givdecrypt;
+ }
crt->base = __crypto_ablkcipher_cast(tfm);
crt->ivsize = alg->ivsize;