From: Thomas Graf <tgraf@redhat.com>
Date: Mon, 10 Mar 2008 16:21:48 +0100
Subject: [crypto] fix SA creation with ESP encryption-only
Message-id: 20080310152148.GC17931@lsx.localdomain
O-Subject: [RHEL5.2 PATCH] BZ436267: Fix SA creation with ESP encryption-only
Bugzilla: 436267

Straight upstream back port of a fix required to allow SAs with only
encryption enabled. Required to meet DoD requirements.

commit ce5bd4aca3c467936370846119b7f3daf9ccea78
Author: Herbert Xu <herbert@gondor.apana.org.au>
Date:   Fri Dec 14 00:28:40 2007 +0800

    [CRYPTO] null: Allow setkey on digest_null

    We need to allow setkey on digest_null if it is to be used directly by
    authenc instead of through hmac.

    Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

Please ACK.

Acked-by: "David S. Miller" <davem@redhat.com>

diff --git a/crypto/crypto_null.c b/crypto/crypto_null.c
index a0d956b..ae2b167 100644
--- a/crypto/crypto_null.c
+++ b/crypto/crypto_null.c
@@ -77,6 +77,7 @@ static struct crypto_alg digest_null = {
 	.cra_list		=       LIST_HEAD_INIT(digest_null.cra_list),	
 	.cra_u			=	{ .digest = {
 	.dia_digestsize		=	NULL_DIGEST_SIZE,
+	.dia_setkey   		=	null_setkey,
 	.dia_init   		=	null_init,
 	.dia_update 		=	null_update,
 	.dia_final  		=	null_final } }