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crypto: caam - fix hash, alg and rng registration if CAAM driver not initialized

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If the CAAM driver initialization failed (due to various reasons, e.g. RNG4
initialization failed), then the registration of hash/algorithms/rng shouldn't
take place. This patch adds the necessary code to prevent this registration.

Signed-off-by: Alex Porosanu <alexandru.porosanu@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Alex Porosanu 2013-09-09 18:56:29 +03:00 committed by Herbert Xu
parent d5e4e999cd
commit b2744dfd39
3 changed files with 21 additions and 0 deletions
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7
drivers/crypto/caam/caamalg.c
View File

@ -2209,6 +2209,13 @@ static int __init caam_algapi_init(void)
priv = dev_get_drvdata(ctrldev);
of_node_put(dev_node);
/*
* If priv is NULL, it's probably because the caam driver wasn't
* properly initialized (e.g. RNG4 init failed). Thus, bail out here.
*/
if (!priv)
return -ENODEV;
INIT_LIST_HEAD(&priv->alg_list);
atomic_set(&priv->tfm_count, -1);

7
drivers/crypto/caam/caamhash.c
View File

@ -1833,6 +1833,13 @@ static int __init caam_algapi_hash_init(void)
priv = dev_get_drvdata(ctrldev);
of_node_put(dev_node);
/*
* If priv is NULL, it's probably because the caam driver wasn't
* properly initialized (e.g. RNG4 init failed). Thus, bail out here.
*/
if (!priv)
return -ENODEV;
INIT_LIST_HEAD(&priv->hash_list);
atomic_set(&priv->tfm_count, -1);

7
drivers/crypto/caam/caamrng.c
View File

@ -298,6 +298,13 @@ static int __init caam_rng_init(void)
priv = dev_get_drvdata(ctrldev);
of_node_put(dev_node);
/*
* If priv is NULL, it's probably because the caam driver wasn't
* properly initialized (e.g. RNG4 init failed). Thus, bail out here.
*/
if (!priv)
return -ENODEV;
caam_init_rng(&rng_ctx, priv->jrdev[0]);
dev_info(priv->jrdev[0], "registering rng-caam\n");