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-rw-r--r--crypto/eseqiv.c31
1 files changed, 12 insertions, 19 deletions
diff --git a/crypto/eseqiv.c b/crypto/eseqiv.c
index 78a72645390c..16dda72fc4f8 100644
--- a/crypto/eseqiv.c
+++ b/crypto/eseqiv.c
@@ -152,6 +152,7 @@ static int eseqiv_init(struct crypto_tfm *tfm)
struct eseqiv_ctx *ctx = crypto_ablkcipher_ctx(geniv);
unsigned long alignmask;
unsigned int reqsize;
+ int err;
spin_lock_init(&ctx->lock);
@@ -175,9 +176,15 @@ static int eseqiv_init(struct crypto_tfm *tfm)
tfm->crt_ablkcipher.reqsize = reqsize +
sizeof(struct ablkcipher_request);
- return crypto_rng_get_bytes(crypto_default_rng, ctx->salt,
- crypto_ablkcipher_ivsize(geniv)) ?:
- skcipher_geniv_init(tfm);
+ err = 0;
+ if (!crypto_get_default_rng()) {
+ crypto_ablkcipher_crt(geniv)->givencrypt = eseqiv_givencrypt;
+ err = crypto_rng_get_bytes(crypto_default_rng, ctx->salt,
+ crypto_ablkcipher_ivsize(geniv));
+ crypto_put_default_rng();
+ }
+
+ return err ?: skcipher_geniv_init(tfm);
}
static struct crypto_template eseqiv_tmpl;
@@ -187,20 +194,14 @@ static struct crypto_instance *eseqiv_alloc(struct rtattr **tb)
struct crypto_instance *inst;
int err;
- err = crypto_get_default_rng();
- if (err)
- return ERR_PTR(err);
-
inst = skcipher_geniv_alloc(&eseqiv_tmpl, tb, 0, 0);
if (IS_ERR(inst))
- goto put_rng;
+ goto out;
err = -EINVAL;
if (inst->alg.cra_ablkcipher.ivsize != inst->alg.cra_blocksize)
goto free_inst;
- inst->alg.cra_ablkcipher.givencrypt = eseqiv_givencrypt;
-
inst->alg.cra_init = eseqiv_init;
inst->alg.cra_exit = skcipher_geniv_exit;
@@ -213,21 +214,13 @@ out:
free_inst:
skcipher_geniv_free(inst);
inst = ERR_PTR(err);
-put_rng:
- crypto_put_default_rng();
goto out;
}
-static void eseqiv_free(struct crypto_instance *inst)
-{
- skcipher_geniv_free(inst);
- crypto_put_default_rng();
-}
-
static struct crypto_template eseqiv_tmpl = {
.name = "eseqiv",
.alloc = eseqiv_alloc,
- .free = eseqiv_free,
+ .free = skcipher_geniv_free,
.module = THIS_MODULE,
};