Merge branch 'audit.b49' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit...

[sfrench/cifs-2.6.git] / crypto / crc32c.c

diff --git a/crypto/crc32c.c b/crypto/crc32c.c
index f2660123aeb41b9626d11e8518bdc47551733f15..0fa744392a4c35fe12d08cd1e46fabcc5c560eb9 100644 (file)
--- a/crypto/crc32c.c
+++ b/crypto/crc32c.c
@@ -16,14 +16,14 @@
 #include <linux/string.h>
 #include <linux/crypto.h>
 #include <linux/crc32c.h>
-#include <linux/types.h>
-#include <asm/byteorder.h>
+#include <linux/kernel.h>
 
 #define CHKSUM_BLOCK_SIZE      32
 #define CHKSUM_DIGEST_SIZE     4
 
 struct chksum_ctx {
        u32 crc;
+       u32 key;
 };
 
 /*
@@ -35,7 +35,7 @@ static void chksum_init(struct crypto_tfm *tfm)
 {
        struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);
 
-       mctx->crc = ~(u32)0;                    /* common usage */
+       mctx->crc = mctx->key;
 }
 
 /*
@@ -44,16 +44,15 @@ static void chksum_init(struct crypto_tfm *tfm)
  * the seed.
  */
 static int chksum_setkey(struct crypto_tfm *tfm, const u8 *key,
-                        unsigned int keylen, u32 *flags)
+                        unsigned int keylen)
 {
        struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);
 
        if (keylen != sizeof(mctx->crc)) {
-               if (flags)
-                       *flags = CRYPTO_TFM_RES_BAD_KEY_LEN;
+               tfm->crt_flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
                return -EINVAL;
        }
-       mctx->crc = __cpu_to_le32(*(u32 *)key);
+       mctx->key = le32_to_cpu(*(__le32 *)key);
        return 0;
 }
 
@@ -61,19 +60,23 @@ static void chksum_update(struct crypto_tfm *tfm, const u8 *data,
                          unsigned int length)
 {
        struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);
-       u32 mcrc;
 
-       mcrc = crc32c(mctx->crc, data, (size_t)length);
-
-       mctx->crc = mcrc;
+       mctx->crc = crc32c(mctx->crc, data, length);
 }
 
 static void chksum_final(struct crypto_tfm *tfm, u8 *out)
 {
        struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);
-       u32 mcrc = (mctx->crc ^ ~(u32)0);
        
-       *(u32 *)out = __le32_to_cpu(mcrc);
+       *(__le32 *)out = ~cpu_to_le32(mctx->crc);
+}
+
+static int crc32c_cra_init(struct crypto_tfm *tfm)
+{
+       struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);
+
+       mctx->key = ~0;
+       return 0;
 }
 
 static struct crypto_alg alg = {
@@ -83,6 +86,7 @@ static struct crypto_alg alg = {
        .cra_ctxsize    =       sizeof(struct chksum_ctx),
        .cra_module     =       THIS_MODULE,
        .cra_list       =       LIST_HEAD_INIT(alg.cra_list),
+       .cra_init       =       crc32c_cra_init,
        .cra_u          =       {
                .digest = {
                         .dia_digestsize=       CHKSUM_DIGEST_SIZE,