From 7f69105077bfb36a8ff9c2ee20af50d921445fc0 Mon Sep 17 00:00:00 2001
From: Tudor-Dan Ambarus <tudor.ambarus@microchip.com>
Date: Thu, 25 May 2017 10:18:09 +0300
Subject: [PATCH] crypto: dh - comply with crypto_kpp_maxsize()
Git-commit: 7f69105077bfb36a8ff9c2ee20af50d921445fc0
References: FATE#326323
Patch-mainline: v4.13

crypto_kpp_maxsize() asks for the output buffer size without
caring for errors. It allways assume that will be called after
a valid setkey. Comply with it and return what he wants.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
---
 crypto/dh.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crypto/dh.c b/crypto/dh.c
index e151f12775ca..b1032a5c1bfa 100644
--- a/crypto/dh.c
+++ b/crypto/dh.c
@@ -147,7 +147,7 @@ static int dh_compute_value(struct kpp_request *req)
 	return ret;
 }
 
-static int dh_max_size(struct crypto_kpp *tfm)
+static unsigned int dh_max_size(struct crypto_kpp *tfm)
 {
 	struct dh_ctx *ctx = dh_get_ctx(tfm);
 
-- 
2.16.4