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authorEric Biggers <ebiggers@google.com>2020-02-26 05:59:21 +0100
committerHerbert Xu <herbert@gondor.apana.org.au>2020-03-06 02:28:23 +0100
commitd57063103332b95eac9c118900f35700a491da08 (patch)
treed338266f5455ce046884929b4c7f72ead55ac35e /crypto/lrw.c
parentcrypto: geniv - simply error handling in aead_geniv_alloc() (diff)
downloadlinux-d57063103332b95eac9c118900f35700a491da08.tar.xz
linux-d57063103332b95eac9c118900f35700a491da08.zip
crypto: lrw - simplify error handling in create()
Simplify the error handling in the LRW template's ->create() function by taking advantage of crypto_drop_skcipher() 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>
Diffstat (limited to 'crypto/lrw.c')
-rw-r--r--crypto/lrw.c28
1 files changed, 11 insertions, 17 deletions
diff --git a/crypto/lrw.c b/crypto/lrw.c
index 63c485c0d8a6..376d7ed3f1f8 100644
--- a/crypto/lrw.c
+++ b/crypto/lrw.c
@@ -343,15 +343,15 @@ static int create(struct crypto_template *tmpl, struct rtattr **tb)
err = -EINVAL;
if (alg->base.cra_blocksize != LRW_BLOCK_SIZE)
- goto err_drop_spawn;
+ goto err_free_inst;
if (crypto_skcipher_alg_ivsize(alg))
- goto err_drop_spawn;
+ goto err_free_inst;
err = crypto_inst_setname(skcipher_crypto_instance(inst), "lrw",
&alg->base);
if (err)
- goto err_drop_spawn;
+ goto err_free_inst;
err = -EINVAL;
cipher_name = alg->base.cra_name;
@@ -364,20 +364,20 @@ static int create(struct crypto_template *tmpl, struct rtattr **tb)
len = strlcpy(ecb_name, cipher_name + 4, sizeof(ecb_name));
if (len < 2 || len >= sizeof(ecb_name))
- goto err_drop_spawn;
+ goto err_free_inst;
if (ecb_name[len - 1] != ')')
- goto err_drop_spawn;
+ goto err_free_inst;
ecb_name[len - 1] = 0;
if (snprintf(inst->alg.base.cra_name, CRYPTO_MAX_ALG_NAME,
"lrw(%s)", ecb_name) >= CRYPTO_MAX_ALG_NAME) {
err = -ENAMETOOLONG;
- goto err_drop_spawn;
+ goto err_free_inst;
}
} else
- goto err_drop_spawn;
+ 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;
@@ -403,17 +403,11 @@ static int create(struct crypto_template *tmpl, struct rtattr **tb)
inst->free = free;
err = skcipher_register_instance(tmpl, inst);
- if (err)
- goto err_drop_spawn;
-
-out:
- return err;
-
-err_drop_spawn:
- crypto_drop_skcipher(spawn);
+ if (err) {
err_free_inst:
- kfree(inst);
- goto out;
+ free(inst);
+ }
+ return err;
}
static struct crypto_template crypto_tmpl = {