[RFT PATCH] crypto: ahash.c: Require export/import in ahash

[Kamil Konieczny]

Export and import were optional in async hash. As drivers were rewritten,
they become mandatory now, so correct init of ahash transformation.

Signed-off-by: Kamil Konieczny <k.koniec...@partner.samsung.com>
---
Tested with crypto run-time self test on Odroid-U3 with Exynos 4412 CPU,
with insmod s5p-sss.ko
Please test with other crypto hash drivers.

 crypto/ahash.c | 18 ++----------------
 1 file changed, 2 insertions(+), 16 deletions(-)

diff --git a/crypto/ahash.c b/crypto/ahash.c
index 3a35d67de7d9..7a8906d5af53 100644
--- a/crypto/ahash.c
+++ b/crypto/ahash.c
@@ -434,16 +434,6 @@ static int ahash_def_finup(struct ahash_request *req)
        return ahash_def_finup_finish1(req, err);
 }
 
-static int ahash_no_export(struct ahash_request *req, void *out)
-{
-       return -ENOSYS;
-}
-
-static int ahash_no_import(struct ahash_request *req, const void *in)
-{
-       return -ENOSYS;
-}
-
 static int crypto_ahash_init_tfm(struct crypto_tfm *tfm)
 {
        struct crypto_ahash *hash = __crypto_ahash_cast(tfm);
@@ -451,8 +441,8 @@ static int crypto_ahash_init_tfm(struct crypto_tfm *tfm)
 
        hash->setkey = ahash_nosetkey;
        hash->has_setkey = false;
-       hash->export = ahash_no_export;
-       hash->import = ahash_no_import;
+       hash->export = alg->export;
+       hash->import = alg->import;
 
        if (tfm->__crt_alg->cra_type != &crypto_ahash_type)
                return crypto_init_shash_ops_async(tfm);
@@ -467,10 +457,6 @@ static int crypto_ahash_init_tfm(struct crypto_tfm *tfm)
                hash->setkey = alg->setkey;
                hash->has_setkey = true;
        }
-       if (alg->export)
-               hash->export = alg->export;
-       if (alg->import)
-               hash->import = alg->import;
 
        return 0;
 }
-- 
2.15.0