UBUNTU: Ubuntu-2.6.38-12.51

[linux-flexiantxendom0-natty.git] / crypto / ahash.c

diff --git a/crypto/ahash.c b/crypto/ahash.c
index ac0798d..f669822 100644 (file)
--- a/crypto/ahash.c
+++ b/crypto/ahash.c
@@ -47,8 +47,11 @@ static int hash_walk_next(struct crypto_hash_walk *walk)
        walk->data = crypto_kmap(walk->pg, 0);
        walk->data += offset;
 
-       if (offset & alignmask)
-               nbytes = alignmask + 1 - (offset & alignmask);
+       if (offset & alignmask) {
+               unsigned int unaligned = alignmask + 1 - (offset & alignmask);
+               if (nbytes > unaligned)
+                       nbytes = unaligned;
+       }
 
        walk->entrylen -= nbytes;
        return nbytes;
@@ -78,7 +81,6 @@ int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err)
        walk->data -= walk->offset;
 
        if (nbytes && walk->offset & alignmask && !err) {
-               walk->offset += alignmask - 1;
                walk->offset = ALIGN(walk->offset, alignmask + 1);
                walk->data += walk->offset;
 
@@ -145,7 +147,6 @@ int crypto_hash_walk_first_compat(struct hash_desc *hdesc,
 static int ahash_setkey_unaligned(struct crypto_ahash *tfm, const u8 *key,
                                unsigned int keylen)
 {
-       struct ahash_alg *ahash = crypto_ahash_alg(tfm);
        unsigned long alignmask = crypto_ahash_alignmask(tfm);
        int ret;
        u8 *buffer, *alignbuffer;
@@ -158,7 +159,7 @@ static int ahash_setkey_unaligned(struct crypto_ahash *tfm, const u8 *key,
 
        alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
        memcpy(alignbuffer, key, keylen);
-       ret = ahash->setkey(tfm, alignbuffer, keylen);
+       ret = tfm->setkey(tfm, alignbuffer, keylen);
        kzfree(buffer);
        return ret;
 }
@@ -166,13 +167,12 @@ static int ahash_setkey_unaligned(struct crypto_ahash *tfm, const u8 *key,
 int crypto_ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
                        unsigned int keylen)
 {
-       struct ahash_alg *ahash = crypto_ahash_alg(tfm);
        unsigned long alignmask = crypto_ahash_alignmask(tfm);
 
        if ((unsigned long)key & alignmask)
                return ahash_setkey_unaligned(tfm, key, keylen);
 
-       return ahash->setkey(tfm, key, keylen);
+       return tfm->setkey(tfm, key, keylen);
 }
 EXPORT_SYMBOL_GPL(crypto_ahash_setkey);
 
@@ -225,7 +225,7 @@ static int ahash_op_unaligned(struct ahash_request *req,
 
        priv = kmalloc(sizeof(*priv) + ahash_align_buffer_size(ds, alignmask),
                       (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
-                      GFP_ATOMIC : GFP_ATOMIC);
+                      GFP_KERNEL : GFP_ATOMIC);
        if (!priv)
                return -ENOMEM;
 
@@ -335,7 +335,7 @@ static int ahash_def_finup(struct ahash_request *req)
 
        priv = kmalloc(sizeof(*priv) + ahash_align_buffer_size(ds, alignmask),
                       (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
-                      GFP_ATOMIC : GFP_ATOMIC);
+                      GFP_KERNEL : GFP_ATOMIC);
        if (!priv)
                return -ENOMEM;