[PATCH] crypto: mxs-dcp: Add empty hash export and import

[Kamil Konieczny <k.konieczny@partner.samsung.com>]

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

Signed-off-by: Kamil Konieczny <k.konieczny@partner.samsung.com>
---
 drivers/crypto/mxs-dcp.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/crypto/mxs-dcp.c b/drivers/crypto/mxs-dcp.c
index 764be3e6933c..a10c418d4e5c 100644
--- a/drivers/crypto/mxs-dcp.c
+++ b/drivers/crypto/mxs-dcp.c
@@ -759,6 +759,16 @@ static int dcp_sha_digest(struct ahash_request *req)
 	return dcp_sha_finup(req);
 }
 
+static int dcp_sha_noimport(struct ahash_request *req, const void *in)
+{
+	return -ENOSYS;
+}
+
+static int dcp_sha_noexport(struct ahash_request *req, void *out)
+{
+	return -ENOSYS;
+}
+
 static int dcp_sha_cra_init(struct crypto_tfm *tfm)
 {
 	crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
@@ -829,6 +839,8 @@ static struct ahash_alg dcp_sha1_alg = {
 	.final	= dcp_sha_final,
 	.finup	= dcp_sha_finup,
 	.digest	= dcp_sha_digest,
+	.import = dcp_sha_noimport,
+	.export = dcp_sha_noexport,
 	.halg	= {
 		.digestsize	= SHA1_DIGEST_SIZE,
 		.base		= {
@@ -853,6 +865,8 @@ static struct ahash_alg dcp_sha256_alg = {
 	.final	= dcp_sha_final,
 	.finup	= dcp_sha_finup,
 	.digest	= dcp_sha_digest,
+	.import = dcp_sha_noimport,
+	.export = dcp_sha_noexport,
 	.halg	= {
 		.digestsize	= SHA256_DIGEST_SIZE,
 		.base		= {
-- 
2.15.0