1 files changed, 14 insertions, 11 deletions

diff --git a/crypto/shash.c b/crypto/shash.c
index 23e05a1e9038..14a3b707a31f 100644
--- a/crypto/shash.c
+++ b/crypto/shash.c
@@ -172,19 +172,15 @@ int crypto_shash_digest(struct shash_desc *desc, const u8 *data,
 }
 EXPORT_SYMBOL_GPL(crypto_shash_digest);
 
-int crypto_shash_import(struct shash_desc *desc, const u8 *in)
+static int shash_no_export(struct shash_desc *desc, void *out)
 {
-        struct crypto_shash *tfm = desc->tfm;
-        struct shash_alg *alg = crypto_shash_alg(tfm);
-
-        memcpy(shash_desc_ctx(desc), in, crypto_shash_descsize(tfm));
-
-        if (alg->reinit)
-                return alg->reinit(desc);
+        return -ENOSYS;
+}
 
-        return 0;
+static int shash_no_import(struct shash_desc *desc, const void *in)
+{
+        return -ENOSYS;
 }
-EXPORT_SYMBOL_GPL(crypto_shash_import);
 
 static int shash_async_setkey(struct crypto_ahash *tfm, const u8 *key,
                               unsigned int keylen)
@@ -484,12 +480,19 @@ static int shash_prepare_alg(struct shash_alg *alg)
         struct crypto_alg *base = &alg->base;
 
         if (alg->digestsize > PAGE_SIZE / 8 ||
-            alg->descsize > PAGE_SIZE / 8)
+            alg->descsize > PAGE_SIZE / 8 ||
+            alg->statesize > PAGE_SIZE / 8)
                 return -EINVAL;
 
         base->cra_type = &crypto_shash_type;
         base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
         base->cra_flags |= CRYPTO_ALG_TYPE_SHASH;
+
+        if (!alg->import)
+                alg->import = shash_no_import;
+        if (!alg->export)
+                alg->export = shash_no_export;
+
         return 0;
 }