[PATCH] Use sg_set_buf/sg_init_one where applicable

This patch uses sg_set_buf/sg_init_one in some places where it was
duplicated.

Signed-off-by: David Hardeman <david@2gen.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Greg KH <greg@kroah.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/hmac.c b/crypto/hmac.c
index da0456b..46120de 100644
--- a/crypto/hmac.c
+++ b/crypto/hmac.c
@@ -18,18 +18,15 @@
 #include <linux/mm.h>
 #include <linux/highmem.h>
 #include <linux/slab.h>
-#include <asm/scatterlist.h>
+#include <linux/scatterlist.h>
 #include "internal.h"
 
 static void hash_key(struct crypto_tfm *tfm, u8 *key, unsigned int keylen)
 {
 	struct scatterlist tmp;
 	
-	tmp.page = virt_to_page(key);
-	tmp.offset = offset_in_page(key);
-	tmp.length = keylen;
+	sg_set_buf(&tmp, key, keylen);
 	crypto_digest_digest(tfm, &tmp, 1, key);
-		
 }
 
 int crypto_alloc_hmac_block(struct crypto_tfm *tfm)
@@ -69,9 +66,7 @@
 	for (i = 0; i < crypto_tfm_alg_blocksize(tfm); i++)
 		ipad[i] ^= 0x36;
 
-	tmp.page = virt_to_page(ipad);
-	tmp.offset = offset_in_page(ipad);
-	tmp.length = crypto_tfm_alg_blocksize(tfm);
+	sg_set_buf(&tmp, ipad, crypto_tfm_alg_blocksize(tfm));
 	
 	crypto_digest_init(tfm);
 	crypto_digest_update(tfm, &tmp, 1);
@@ -103,16 +98,12 @@
 	for (i = 0; i < crypto_tfm_alg_blocksize(tfm); i++)
 		opad[i] ^= 0x5c;
 
-	tmp.page = virt_to_page(opad);
-	tmp.offset = offset_in_page(opad);
-	tmp.length = crypto_tfm_alg_blocksize(tfm);
+	sg_set_buf(&tmp, opad, crypto_tfm_alg_blocksize(tfm));
 
 	crypto_digest_init(tfm);
 	crypto_digest_update(tfm, &tmp, 1);
 	
-	tmp.page = virt_to_page(out);
-	tmp.offset = offset_in_page(out);
-	tmp.length = crypto_tfm_alg_digestsize(tfm);
+	sg_set_buf(&tmp, out, crypto_tfm_alg_digestsize(tfm));
 	
 	crypto_digest_update(tfm, &tmp, 1);
 	crypto_digest_final(tfm, out);