crypto: algapi - remove crypto_alloc_instance()

Now that all "blkcipher" templates have been converted to "skcipher",
crypto_alloc_instance() is no longer used.  And it's not useful any
longer as it creates an old-style weakly typed instance rather than a
new-style strongly typed instance.  So remove it, and now that the name
is freed up rename crypto_alloc_instance2() to crypto_alloc_instance().

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/algapi.c

@@ -845,8 +845,8 @@ int crypto_inst_setname(struct crypto_instance *inst, const char *name,
 }
 EXPORT_SYMBOL_GPL(crypto_inst_setname);
 
-void *crypto_alloc_instance2(const char *name, struct crypto_alg *alg,
-			     unsigned int head)
+void *crypto_alloc_instance(const char *name, struct crypto_alg *alg,
+			    unsigned int head)
 {
 	struct crypto_instance *inst;
 	char *p;
@@ -869,35 +869,6 @@ err_free_inst:
 	kfree(p);
 	return ERR_PTR(err);
 }
-EXPORT_SYMBOL_GPL(crypto_alloc_instance2);
-
-struct crypto_instance *crypto_alloc_instance(const char *name,
-					      struct crypto_alg *alg)
-{
-	struct crypto_instance *inst;
-	struct crypto_spawn *spawn;
-	int err;
-
-	inst = crypto_alloc_instance2(name, alg, 0);
-	if (IS_ERR(inst))
-		goto out;
-
-	spawn = crypto_instance_ctx(inst);
-	err = crypto_init_spawn(spawn, alg, inst,
-				CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC);
-
-	if (err)
-		goto err_free_inst;
-
-	return inst;
-
-err_free_inst:
-	kfree(inst);
-	inst = ERR_PTR(err);
-
-out:
-	return inst;
-}
 EXPORT_SYMBOL_GPL(crypto_alloc_instance);
 
 void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen)

include/crypto/algapi.h

@@ -185,10 +185,8 @@ static inline struct crypto_alg *crypto_attr_alg(struct rtattr *rta,
 int crypto_attr_u32(struct rtattr *rta, u32 *num);
 int crypto_inst_setname(struct crypto_instance *inst, const char *name,
 			struct crypto_alg *alg);
-void *crypto_alloc_instance2(const char *name, struct crypto_alg *alg,
-			     unsigned int head);
-struct crypto_instance *crypto_alloc_instance(const char *name,
-					      struct crypto_alg *alg);
+void *crypto_alloc_instance(const char *name, struct crypto_alg *alg,
+			    unsigned int head);
 
 void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen);
 int crypto_enqueue_request(struct crypto_queue *queue,

include/crypto/internal/hash.h

@@ -170,7 +170,7 @@ static inline unsigned int ahash_instance_headroom(void)
 static inline struct ahash_instance *ahash_alloc_instance(
 	const char *name, struct crypto_alg *alg)
 {
-	return crypto_alloc_instance2(name, alg, ahash_instance_headroom());
+	return crypto_alloc_instance(name, alg, ahash_instance_headroom());
 }
 
 static inline void ahash_request_complete(struct ahash_request *req, int err)
@@ -233,8 +233,8 @@ static inline void *shash_instance_ctx(struct shash_instance *inst)
 static inline struct shash_instance *shash_alloc_instance(
 	const char *name, struct crypto_alg *alg)
 {
-	return crypto_alloc_instance2(name, alg,
-				      sizeof(struct shash_alg) - sizeof(*alg));
+	return crypto_alloc_instance(name, alg,
+				     sizeof(struct shash_alg) - sizeof(*alg));
 }
 
 static inline struct crypto_shash *crypto_spawn_shash(