crypto: algapi - remove crypto_template::{alloc,free}()

Now that all templates provide a ->create() method which creates an
instance, installs a strongly-typed ->free() method directly to it, and
registers it, the older ->alloc() and ->free() methods in
'struct crypto_template' are no longer used.  Remove them.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/aead.c

@@ -185,11 +185,6 @@ static void crypto_aead_free_instance(struct crypto_instance *inst)
 {
 	struct aead_instance *aead = aead_instance(inst);
 
-	if (!aead->free) {
-		inst->tmpl->free(inst);
-		return;
-	}
-
 	aead->free(aead);
 }
 

crypto/ahash.c

@@ -515,11 +515,6 @@ static void crypto_ahash_free_instance(struct crypto_instance *inst)
 {
 	struct ahash_instance *ahash = ahash_instance(inst);
 
-	if (!ahash->free) {
-		inst->tmpl->free(inst);
-		return;
-	}
-
 	ahash->free(ahash);
 }
 

crypto/algapi.c

@@ -65,11 +65,6 @@ static int crypto_check_alg(struct crypto_alg *alg)
 
 static void crypto_free_instance(struct crypto_instance *inst)
 {
-	if (!inst->alg.cra_type->free) {
-		inst->tmpl->free(inst);
-		return;
-	}
-
 	inst->alg.cra_type->free(inst);
 }
 

crypto/algboss.c

@@ -58,7 +58,6 @@ static int cryptomgr_probe(void *data)
 {
 	struct cryptomgr_param *param = data;
 	struct crypto_template *tmpl;
-	struct crypto_instance *inst;
 	int err;
 
 	tmpl = crypto_lookup_template(param->template);
@@ -66,16 +65,7 @@ static int cryptomgr_probe(void *data)
 		goto out;
 
 	do {
-		if (tmpl->create) {
-			err = tmpl->create(tmpl, param->tb);
-			continue;
-		}
-
-		inst = tmpl->alloc(param->tb);
-		if (IS_ERR(inst))
-			err = PTR_ERR(inst);
-		else if ((err = crypto_register_instance(tmpl, inst)))
-			tmpl->free(inst);
+		err = tmpl->create(tmpl, param->tb);
 	} while (err == -EAGAIN && !signal_pending(current));
 
 	crypto_tmpl_put(tmpl);

crypto/shash.c

@@ -427,11 +427,6 @@ static void crypto_shash_free_instance(struct crypto_instance *inst)
 {
 	struct shash_instance *shash = shash_instance(inst);
 
-	if (!shash->free) {
-		inst->tmpl->free(inst);
-		return;
-	}
-
 	shash->free(shash);
 }
 

include/crypto/algapi.h

@@ -63,8 +63,6 @@ struct crypto_template {
 	struct hlist_head instances;
 	struct module *module;
 
-	struct crypto_instance *(*alloc)(struct rtattr **tb);
-	void (*free)(struct crypto_instance *inst);
 	int (*create)(struct crypto_template *tmpl, struct rtattr **tb);
 
 	char name[CRYPTO_MAX_ALG_NAME];