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| author | Eric Biggers <ebiggers@google.com> | 2020-02-25 20:59:20 -0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-03-06 12:28:23 +1100 |
| commit | 376ffe1acbc642ce38169f7410b1735ffcacd774 (patch) | |
| tree | e75a563ead60193844649d0098581ea564bc4ada | |
| parent | c4caa56d8f995aa34118757c6525cf6048c68def (diff) | |
| download | linux-stable-376ffe1acbc642ce38169f7410b1735ffcacd774.tar.gz linux-stable-376ffe1acbc642ce38169f7410b1735ffcacd774.tar.bz2 linux-stable-376ffe1acbc642ce38169f7410b1735ffcacd774.zip | |
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>
| -rw-r--r-- | crypto/geniv.c | 17 |
1 files changed, 5 insertions, 12 deletions
diff --git a/crypto/geniv.c b/crypto/geniv.c index dbcc640274cd..6a90c52d49ad 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; } |