crypto: geniv - simply error handling in aead_geniv_alloc()
Simplify the error handling in aead_geniv_alloc() by taking advantage of
crypto_grab_aead() now handling an ERR_PTR() name and by taking
advantage of crypto_drop_aead() now accepting (as a no-op) a spawn that
hasn't been grabbed yet.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/geniv.c b/crypto/geniv.c
index dbcc6402..6a90c52 100644
--- a/crypto/geniv.c
+++ b/crypto/geniv.c
@@ -41,7 +41,6 @@ static void aead_geniv_free(struct aead_instance *inst)
struct aead_instance *aead_geniv_alloc(struct crypto_template *tmpl,
struct rtattr **tb, u32 type, u32 mask)
{
- const char *name;
struct crypto_aead_spawn *spawn;
struct crypto_attr_type *algt;
struct aead_instance *inst;
@@ -57,10 +56,6 @@ struct aead_instance *aead_geniv_alloc(struct crypto_template *tmpl,
if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & algt->mask)
return ERR_PTR(-EINVAL);
- name = crypto_attr_alg_name(tb[1]);
- if (IS_ERR(name))
- return ERR_CAST(name);
-
inst = kzalloc(sizeof(*inst) + sizeof(*spawn), GFP_KERNEL);
if (!inst)
return ERR_PTR(-ENOMEM);
@@ -71,7 +66,7 @@ struct aead_instance *aead_geniv_alloc(struct crypto_template *tmpl,
mask |= crypto_requires_sync(algt->type, algt->mask);
err = crypto_grab_aead(spawn, aead_crypto_instance(inst),
- name, type, mask);
+ crypto_attr_alg_name(tb[1]), type, mask);
if (err)
goto err_free_inst;
@@ -82,17 +77,17 @@ struct aead_instance *aead_geniv_alloc(struct crypto_template *tmpl,
err = -EINVAL;
if (ivsize < sizeof(u64))
- goto err_drop_alg;
+ goto err_free_inst;
err = -ENAMETOOLONG;
if (snprintf(inst->alg.base.cra_name, CRYPTO_MAX_ALG_NAME,
"%s(%s)", tmpl->name, alg->base.cra_name) >=
CRYPTO_MAX_ALG_NAME)
- goto err_drop_alg;
+ goto err_free_inst;
if (snprintf(inst->alg.base.cra_driver_name, CRYPTO_MAX_ALG_NAME,
"%s(%s)", tmpl->name, alg->base.cra_driver_name) >=
CRYPTO_MAX_ALG_NAME)
- goto err_drop_alg;
+ goto err_free_inst;
inst->alg.base.cra_flags = alg->base.cra_flags & CRYPTO_ALG_ASYNC;
inst->alg.base.cra_priority = alg->base.cra_priority;
@@ -111,10 +106,8 @@ struct aead_instance *aead_geniv_alloc(struct crypto_template *tmpl,
out:
return inst;
-err_drop_alg:
- crypto_drop_aead(spawn);
err_free_inst:
- kfree(inst);
+ aead_geniv_free(inst);
inst = ERR_PTR(err);
goto out;
}