[PATCH] crypto: n2_core: Add empty hash export and import

[Kamil Konieczny]

Crypto framework will require async hash export/import, so add empty
functions to prevent OOPS.

Signed-off-by: Kamil Konieczny <k.koniec...@partner.samsung.com>
---
 drivers/crypto/n2_core.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/crypto/n2_core.c b/drivers/crypto/n2_core.c
index 662e709812cc..80e9c842aad4 100644
--- a/drivers/crypto/n2_core.c
+++ b/drivers/crypto/n2_core.c
@@ -359,6 +359,16 @@ static int n2_hash_async_finup(struct ahash_request *req)
        return crypto_ahash_finup(&rctx->fallback_req);
 }
 
+static int n2_hash_async_noimport(struct ahash_request *req, const void *in)
+{
+       return -ENOSYS;
+}
+
+static int n2_hash_async_noexport(struct ahash_request *req, void *out)
+{
+       return -ENOSYS;
+}
+
 static int n2_hash_cra_init(struct crypto_tfm *tfm)
 {
        const char *fallback_driver_name = crypto_tfm_alg_name(tfm);
@@ -1467,6 +1477,8 @@ static int __n2_register_one_ahash(const struct 
n2_hash_tmpl *tmpl)
        ahash->final = n2_hash_async_final;
        ahash->finup = n2_hash_async_finup;
        ahash->digest = n2_hash_async_digest;
+       ahash->export = n2_hash_async_noexport;
+       ahash->import = n2_hash_async_noimport;
 
        halg = &ahash->halg;
        halg->digestsize = tmpl->digest_size;
-- 
2.15.0