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authorEric Biggers <ebiggers@google.com>2020-01-02 19:59:08 -0800
committerHerbert Xu <herbert@gondor.apana.org.au>2020-01-09 11:30:57 +0800
commitaed11cf57ddb24aa97ca3b55c9e26c37759c4baa (patch)
tree8f2fc4d674f2a506622a620398246373b77f33aa /crypto/algapi.c
parentcrypto: ahash - unexport crypto_ahash_type (diff)
downloadlinux-dev-aed11cf57ddb24aa97ca3b55c9e26c37759c4baa.tar.xz
linux-dev-aed11cf57ddb24aa97ca3b55c9e26c37759c4baa.zip
crypto: algapi - fold crypto_init_spawn() into crypto_grab_spawn()
Now that crypto_init_spawn() is only called by crypto_grab_spawn(), simplify things by moving its functionality into crypto_grab_spawn(). In the process of doing this, also be more consistent about when the spawn and instance are updated, and remove the crypto_spawn::dropref flag since now it's always set. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to '')
-rw-r--r--crypto/algapi.c43
1 files changed, 14 insertions, 29 deletions
diff --git a/crypto/algapi.c b/crypto/algapi.c
index f66a4ff57e6e..72592795c7e7 100644
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -629,8 +629,7 @@ int crypto_register_instance(struct crypto_template *tmpl,
spawn->inst = inst;
spawn->registered = true;
- if (spawn->dropref)
- crypto_mod_put(spawn->alg);
+ crypto_mod_put(spawn->alg);
spawn = next;
}
@@ -672,47 +671,33 @@ void crypto_unregister_instance(struct crypto_instance *inst)
}
EXPORT_SYMBOL_GPL(crypto_unregister_instance);
-int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg,
- struct crypto_instance *inst, u32 mask)
+int crypto_grab_spawn(struct crypto_spawn *spawn, struct crypto_instance *inst,
+ const char *name, u32 type, u32 mask)
{
+ struct crypto_alg *alg;
int err = -EAGAIN;
if (WARN_ON_ONCE(inst == NULL))
return -EINVAL;
- spawn->next = inst->spawns;
- inst->spawns = spawn;
+ /* Allow the result of crypto_attr_alg_name() to be passed directly */
+ if (IS_ERR(name))
+ return PTR_ERR(name);
- spawn->mask = mask;
+ alg = crypto_find_alg(name, spawn->frontend, type, mask);
+ if (IS_ERR(alg))
+ return PTR_ERR(alg);
down_write(&crypto_alg_sem);
if (!crypto_is_moribund(alg)) {
list_add(&spawn->list, &alg->cra_users);
spawn->alg = alg;
+ spawn->mask = mask;
+ spawn->next = inst->spawns;
+ inst->spawns = spawn;
err = 0;
}
up_write(&crypto_alg_sem);
-
- return err;
-}
-EXPORT_SYMBOL_GPL(crypto_init_spawn);
-
-int crypto_grab_spawn(struct crypto_spawn *spawn, struct crypto_instance *inst,
- const char *name, u32 type, u32 mask)
-{
- struct crypto_alg *alg;
- int err;
-
- /* Allow the result of crypto_attr_alg_name() to be passed directly */
- if (IS_ERR(name))
- return PTR_ERR(name);
-
- alg = crypto_find_alg(name, spawn->frontend, type, mask);
- if (IS_ERR(alg))
- return PTR_ERR(alg);
-
- spawn->dropref = true;
- err = crypto_init_spawn(spawn, alg, inst, mask);
if (err)
crypto_mod_put(alg);
return err;
@@ -729,7 +714,7 @@ void crypto_drop_spawn(struct crypto_spawn *spawn)
list_del(&spawn->list);
up_write(&crypto_alg_sem);
- if (spawn->dropref && !spawn->registered)
+ if (!spawn->registered)
crypto_mod_put(spawn->alg);
}
EXPORT_SYMBOL_GPL(crypto_drop_spawn);