From 57cfe44bccb0e38ddb44a34a42f517deef1f4e82 Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Sat, 11 Jul 2009 22:17:39 +0800
Subject: crypto: shash - Move null setkey check to registration time

This patch moves the run-time null setkey check to shash_prepare_alg
just like we did for finup/digest.

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

diff --git a/crypto/shash.c b/crypto/shash.c
index f7fcc65..131e14d 100644
--- a/crypto/shash.c
+++ b/crypto/shash.c
@@ -22,6 +22,12 @@
 
 static const struct crypto_type crypto_shash_type;
 
+static int shash_no_setkey(struct crypto_shash *tfm, const u8 *key,
+			   unsigned int keylen)
+{
+	return -ENOSYS;
+}
+
 static int shash_setkey_unaligned(struct crypto_shash *tfm, const u8 *key,
 				  unsigned int keylen)
 {
@@ -50,9 +56,6 @@ int crypto_shash_setkey(struct crypto_shash *tfm, const u8 *key,
 	struct shash_alg *shash = crypto_shash_alg(tfm);
 	unsigned long alignmask = crypto_shash_alignmask(tfm);
 
-	if (!shash->setkey)
-		return -ENOSYS;
-
 	if ((unsigned long)key & alignmask)
 		return shash_setkey_unaligned(tfm, key, keylen);
 
@@ -494,6 +497,8 @@ static int shash_prepare_alg(struct shash_alg *alg)
 		alg->import = shash_no_import;
 	if (!alg->export)
 		alg->export = shash_no_export;
+	if (!alg->setkey)
+		alg->setkey = shash_no_setkey;
 
 	return 0;
 }
-- 
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