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-rw-r--r--crypto/ahash.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/crypto/ahash.c b/crypto/ahash.c
index 7d4e33dfe212..9f98956b17fc 100644
--- a/crypto/ahash.c
+++ b/crypto/ahash.c
@@ -112,6 +112,22 @@ int crypto_hash_walk_first(struct ahash_request *req,
}
EXPORT_SYMBOL_GPL(crypto_hash_walk_first);
+int crypto_hash_walk_first_compat(struct hash_desc *hdesc,
+ struct crypto_hash_walk *walk,
+ struct scatterlist *sg, unsigned int len)
+{
+ walk->total = len;
+
+ if (!walk->total)
+ return 0;
+
+ walk->alignmask = crypto_hash_alignmask(hdesc->tfm);
+ walk->sg = sg;
+ walk->flags = hdesc->flags;
+
+ return hash_walk_new_entry(walk);
+}
+
static int ahash_setkey_unaligned(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen)
{