[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>

10 files changed, 44 insertions, 105 deletions

diff --git a/crypto/hmac.c b/crypto/hmac.c
index da0456b371..46120dee5a 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 @@ void crypto_hmac_init(struct crypto_tfm *tfm, u8 *key, unsigned int *keylen)
         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 @@ void crypto_hmac_final(struct crypto_tfm *tfm, u8 *key,
         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);
diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index 68639419c5..577a3aff31 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -21,7 +21,7 @@
 #include <linux/module.h>
 #include <linux/mm.h>
 #include <linux/slab.h>
-#include <asm/scatterlist.h>
+#include <linux/scatterlist.h>
 #include <linux/string.h>
 #include <linux/crypto.h>
 #include <linux/highmem.h>
@@ -86,7 +86,6 @@ static void hexdump(unsigned char *buf, unsigned int len)
 static void test_hash(char *algo, struct hash_testvec *template,
                       unsigned int tcount)
 {
-        char *p;
         unsigned int i, j, k, temp;
         struct scatterlist sg[8];
         char result[64];
@@ -116,10 +115,7 @@ static void test_hash(char *algo, struct hash_testvec *template,
                 printk("test %u:\n", i + 1);
                 memset(result, 0, 64);
 
-                p = hash_tv[i].plaintext;
-                sg[0].page = virt_to_page(p);
-                sg[0].offset = offset_in_page(p);
-                sg[0].length = hash_tv[i].psize;
+                sg_set_buf(&sg[0], hash_tv[i].plaintext, hash_tv[i].psize);
 
                 crypto_digest_init(tfm);
                 if (tfm->crt_u.digest.dit_setkey) {
@@ -154,10 +150,8 @@ static void test_hash(char *algo, struct hash_testvec *template,
                                        hash_tv[i].plaintext + temp,
                                        hash_tv[i].tap[k]);
                                 temp += hash_tv[i].tap[k];
-                                p = &xbuf[IDX[k]];
-                                sg[k].page = virt_to_page(p);
-                                sg[k].offset = offset_in_page(p);
-                                sg[k].length = hash_tv[i].tap[k];
+                                sg_set_buf(&sg[k], &xbuf[IDX[k]],
+                                            hash_tv[i].tap[k]);
                         }
 
                         crypto_digest_digest(tfm, sg, hash_tv[i].np, result);
@@ -179,7 +173,6 @@ static void test_hash(char *algo, struct hash_testvec *template,
 static void test_hmac(char *algo, struct hmac_testvec *template,
                       unsigned int tcount)
 {
-        char *p;
         unsigned int i, j, k, temp;
         struct scatterlist sg[8];
         char result[64];
@@ -210,11 +203,8 @@ static void test_hmac(char *algo, struct hmac_testvec *template,
                 printk("test %u:\n", i + 1);
                 memset(result, 0, sizeof (result));
 
-                p = hmac_tv[i].plaintext;
                 klen = hmac_tv[i].ksize;
-                sg[0].page = virt_to_page(p);
-                sg[0].offset = offset_in_page(p);
-                sg[0].length = hmac_tv[i].psize;
+                sg_set_buf(&sg[0], hmac_tv[i].plaintext, hmac_tv[i].psize);
 
                 crypto_hmac(tfm, hmac_tv[i].key, &klen, sg, 1, result);
 
@@ -243,10 +233,8 @@ static void test_hmac(char *algo, struct hmac_testvec *template,
                                        hmac_tv[i].plaintext + temp,
                                        hmac_tv[i].tap[k]);
                                 temp += hmac_tv[i].tap[k];
-                                p = &xbuf[IDX[k]];
-                                sg[k].page = virt_to_page(p);
-                                sg[k].offset = offset_in_page(p);
-                                sg[k].length = hmac_tv[i].tap[k];
+                                sg_set_buf(&sg[k], &xbuf[IDX[k]],
+                                            hmac_tv[i].tap[k]);
                         }
 
                         crypto_hmac(tfm, hmac_tv[i].key, &klen, sg,
@@ -270,7 +258,7 @@ static void test_cipher(char *algo, int mode, int enc,
 {
         unsigned int ret, i, j, k, temp;
         unsigned int tsize;
-        char *p, *q;
+        char *q;
         struct crypto_tfm *tfm;
         char *key;
         struct cipher_testvec *cipher_tv;
@@ -330,10 +318,8 @@ static void test_cipher(char *algo, int mode, int enc,
                                         goto out;
                         }
 
-                        p = cipher_tv[i].input;
-                        sg[0].page = virt_to_page(p);
-                        sg[0].offset = offset_in_page(p);
-                        sg[0].length = cipher_tv[i].ilen;
+                        sg_set_buf(&sg[0], cipher_tv[i].input,
+                                   cipher_tv[i].ilen);
 
                         if (!mode) {
                                 crypto_cipher_set_iv(tfm, cipher_tv[i].iv,
@@ -389,10 +375,8 @@ static void test_cipher(char *algo, int mode, int enc,
                                        cipher_tv[i].input + temp,
                                        cipher_tv[i].tap[k]);
                                 temp += cipher_tv[i].tap[k];
-                                p = &xbuf[IDX[k]];
-                                sg[k].page = virt_to_page(p);
-                                sg[k].offset = offset_in_page(p);
-                                sg[k].length = cipher_tv[i].tap[k];
+                                sg_set_buf(&sg[k], &xbuf[IDX[k]],
+                                           cipher_tv[i].tap[k]);
                         }
 
                         if (!mode) {
@@ -436,9 +420,7 @@ static int test_cipher_jiffies(struct crypto_tfm *tfm, int enc, char *p,
         int bcount;
         int ret;
 
-        sg[0].page = virt_to_page(p);
-        sg[0].offset = offset_in_page(p);
-        sg[0].length = blen;
+        sg_set_buf(&sg[0], p, blen);