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Commit 9fcc704d authored by Herbert Xu's avatar Herbert Xu
Browse files

crypto: echainiv - Only hold RNG during initialisation 



This patch changes the RNG allocation so that we only hold a
reference to the RNG during initialisation.

Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent eeee12aa

crypto/echainiv.c

+6 −22
Original line number Diff line number Diff line
@@ -197,8 +197,13 @@ static int echainiv_init(struct crypto_tfm *tfm) 


	crypto_aead_set_reqsize(geniv, sizeof(struct aead_request));



	err = crypto_get_default_rng();

	if (err)

		goto out;



	err = crypto_rng_get_bytes(crypto_default_rng, ctx->salt,

				   crypto_aead_ivsize(geniv));

	crypto_put_default_rng();

	if (err)

		goto out;
@@ -277,35 +282,14 @@ static int echainiv_aead_create(struct crypto_template *tmpl, 
	goto out;

}



static int echainiv_create(struct crypto_template *tmpl, struct rtattr **tb)

{

	int err;



	err = crypto_get_default_rng();

	if (err)

		goto out;



	err = echainiv_aead_create(tmpl, tb);

	if (err)

		goto put_rng;



out:

	return err;



put_rng:

	crypto_put_default_rng();

	goto out;

}



static void echainiv_free(struct crypto_instance *inst)

{

	aead_geniv_free(aead_instance(inst));

	crypto_put_default_rng();

}



static struct crypto_template echainiv_tmpl = {

	.name = "echainiv",

	.create = echainiv_create,

	.create = echainiv_aead_create,

	.free = echainiv_free,

	.module = THIS_MODULE,

};