1 files changed, 11 insertions, 8 deletions

diff --git a/crypto/shash.c b/crypto/shash.c
index 7713b520bc98..98b7f46ca1ed 100644
--- a/crypto/shash.c
+++ b/crypto/shash.c
@@ -183,14 +183,16 @@ int crypto_shash_digest(struct shash_desc *desc, const u8 *data,
 }
 EXPORT_SYMBOL_GPL(crypto_shash_digest);
 
-static int shash_no_export(struct shash_desc *desc, void *out)
+static int shash_default_export(struct shash_desc *desc, void *out)
 {
-        return -ENOSYS;
+        memcpy(out, shash_desc_ctx(desc), crypto_shash_descsize(desc->tfm));
+        return 0;
 }
 
-static int shash_no_import(struct shash_desc *desc, const void *in)
+static int shash_default_import(struct shash_desc *desc, const void *in)
 {
-        return -ENOSYS;
+        memcpy(shash_desc_ctx(desc), in, crypto_shash_descsize(desc->tfm));
+        return 0;
 }
 
 static int shash_async_setkey(struct crypto_ahash *tfm, const u8 *key,
@@ -563,10 +565,11 @@ static int shash_prepare_alg(struct shash_alg *alg)
                 alg->finup = shash_finup_unaligned;
         if (!alg->digest)
                 alg->digest = shash_digest_unaligned;
-        if (!alg->import)
-                alg->import = shash_no_import;
-        if (!alg->export)
-                alg->export = shash_no_export;
+        if (!alg->export) {
+                alg->export = shash_default_export;
+                alg->import = shash_default_import;
+                alg->statesize = alg->descsize;
+        }
         if (!alg->setkey)
                 alg->setkey = shash_no_setkey;