From aef27136b8b5e526f2e96ca1caa30a6d07e70f42 Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Thu, 13 Aug 2009 23:10:39 +1000
Subject: crypto: ctr - Use chainiv on raw counter mode

Raw counter mode only works with chainiv, which is no longer
the default IV generator on SMP machines.  This broke raw counter
mode as it can no longer instantiate as a givcipher.

This patch fixes it by always picking chainiv on raw counter
mode.  This is based on the diagnosis and a patch by Huang
Ying.

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

diff --git a/crypto/ctr.c b/crypto/ctr.c
index 2d7425f..6c3bfab 100644
--- a/crypto/ctr.c
+++ b/crypto/ctr.c
@@ -219,6 +219,8 @@ static struct crypto_instance *crypto_ctr_alloc(struct rtattr **tb)
 	inst->alg.cra_blkcipher.encrypt = crypto_ctr_crypt;
 	inst->alg.cra_blkcipher.decrypt = crypto_ctr_crypt;
 
+	inst->alg.cra_blkcipher.geniv = "chainiv";
+
 out:
 	crypto_mod_put(alg);
 	return inst;
-- 
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