[CRYPTO] api: Added cra_init/cra_exit

This patch adds the hooks cra_init/cra_exit which are called during a tfm's
construction and destruction respectively.  This will be used by the instances
to allocate child tfm's.

For now this lets us get rid of the coa_init/coa_exit functions which are
used for exactly that purpose (unlike the dia_init function which is called
for each transaction).

In fact the coa_exit path is currently buggy as it may get called twice
when an error is encountered during initialisation.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 3 insertions, 2 deletions

diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index ef918803ec..6c013c8808 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -109,8 +109,6 @@ struct digest_alg {
 };
 
 struct compress_alg {
-        int (*coa_init)(struct crypto_tfm *tfm);
-        void (*coa_exit)(struct crypto_tfm *tfm);
         int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
                             unsigned int slen, u8 *dst, unsigned int *dlen);
         int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
@@ -138,6 +136,9 @@ struct crypto_alg {
                 struct digest_alg digest;
                 struct compress_alg compress;
         } cra_u;
+
+        int (*cra_init)(struct crypto_tfm *tfm);
+        void (*cra_exit)(struct crypto_tfm *tfm);
         
         struct module *cra_module;
 };