crypto: sha512 - Expose generic sha512 routine to be callable from other modules

Other SHA512 routines may need to use the generic routine when
FPU is not available.

Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 7 insertions, 6 deletions

diff --git a/crypto/sha512_generic.c b/crypto/sha512_generic.c
index 71fcf361102d..4c5862095679 100644
--- a/crypto/sha512_generic.c
+++ b/crypto/sha512_generic.c
@@ -163,8 +163,8 @@ sha384_init(struct shash_desc *desc)
         return 0;
 }
 
-static int
-sha512_update(struct shash_desc *desc, const u8 *data, unsigned int len)
+int crypto_sha512_update(struct shash_desc *desc, const u8 *data,
+                        unsigned int len)
 {
         struct sha512_state *sctx = shash_desc_ctx(desc);
 
@@ -197,6 +197,7 @@ sha512_update(struct shash_desc *desc, const u8 *data, unsigned int len)
 
         return 0;
 }
+EXPORT_SYMBOL(crypto_sha512_update);
 
 static int
 sha512_final(struct shash_desc *desc, u8 *hash)
@@ -215,10 +216,10 @@ sha512_final(struct shash_desc *desc, u8 *hash)
         /* Pad out to 112 mod 128. */
         index = sctx->count[0] & 0x7f;
         pad_len = (index < 112) ? (112 - index) : ((128+112) - index);
-        sha512_update(desc, padding, pad_len);
+        crypto_sha512_update(desc, padding, pad_len);
 
         /* Append length (before padding) */
-        sha512_update(desc, (const u8 *)bits, sizeof(bits));
+        crypto_sha512_update(desc, (const u8 *)bits, sizeof(bits));
 
         /* Store state in digest */
         for (i = 0; i < 8; i++)
@@ -245,7 +246,7 @@ static int sha384_final(struct shash_desc *desc, u8 *hash)
 static struct shash_alg sha512_algs[2] = { {
         .digestsize     =       SHA512_DIGEST_SIZE,
         .init           =       sha512_init,
-        .update         =       sha512_update,
+        .update         =       crypto_sha512_update,
         .final          =       sha512_final,
         .descsize       =       sizeof(struct sha512_state),
         .base           =       {
@@ -257,7 +258,7 @@ static struct shash_alg sha512_algs[2] = { {
 }, {
         .digestsize     =       SHA384_DIGEST_SIZE,
         .init           =       sha384_init,
-        .update         =       sha512_update,
+        .update         =       crypto_sha512_update,
         .final          =       sha384_final,
         .descsize       =       sizeof(struct sha512_state),
         .base           =       {