crypto_ahash_clear_flags
crypto_ahash_clear_flags(tfm, CRYPTO_TFM_NEED_KEY);
crypto_ahash_clear_flags(auth, CRYPTO_TFM_REQ_MASK);
crypto_ahash_clear_flags(auth, CRYPTO_TFM_REQ_MASK);
crypto_ahash_clear_flags(mac, CRYPTO_TFM_REQ_MASK);
crypto_ahash_clear_flags(ghash, CRYPTO_TFM_REQ_MASK);
crypto_ahash_clear_flags(auth, CRYPTO_TFM_REQ_MASK);
crypto_ahash_clear_flags(tfm, CRYPTO_TFM_REQ_MASK);
crypto_ahash_clear_flags(tfm, ~0);
crypto_ahash_clear_flags(ahash_tfm, ~0);
crypto_ahash_clear_flags(tfm, ~0);
crypto_ahash_clear_flags(ahash_tfm, ~0);
crypto_ahash_clear_flags(ahash_tfm, ~0);