From: Wen Yang <yellowriver2010@xxxxxxxxxxx>
The of_find_device_by_node() takes a reference to the underlying device
structure, we should release that reference.
Fixes: 35af64038623 ("crypto: caam - Check for CAAM block presence before registering with crypto layer")
Fixes: b189817cf789 ("crypto: caam/qi - add ablkcipher and authenc algorithms")
Reviewed-by: Horia Geantă <horia.geanta@xxxxxxx>
Signed-off-by: Wen Yang <yellowriver2010@xxxxxxxxxxx>
---
Looks like previous versions, for some unknown reason, did not reach
the mailing lists.
Resending v3 with the addition of a 2nd Fixes and Reviewed-by tags,
cf. https://lkml.org/lkml/2019/2/11/383
drivers/crypto/caam/caamalg.c | 12 +++++++-----
drivers/crypto/caam/caamalg_qi.c | 11 ++++++++---
drivers/crypto/caam/caamhash.c | 18 +++++++++++-------
drivers/crypto/caam/caampkc.c | 14 ++++++++++----
drivers/crypto/caam/caamrng.c | 22 ++++++++++++++--------
5 files changed, 50 insertions(+), 27 deletions(-)
diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c
index 9eac5099098e..579578498deb 100644
--- a/drivers/crypto/caam/caamalg.c
+++ b/drivers/crypto/caam/caamalg.c
@@ -3455,7 +3455,6 @@ static int __init caam_algapi_init(void)
{
struct device_node *dev_node;
struct platform_device *pdev;
- struct device *ctrldev;
struct caam_drv_private *priv;
int i = 0, err = 0;
u32 aes_vid, aes_inst, des_inst, md_vid, md_inst, ccha_inst, ptha_inst;
@@ -3476,16 +3475,17 @@ static int __init caam_algapi_init(void)
return -ENODEV;
}
- ctrldev = &pdev->dev;
- priv = dev_get_drvdata(ctrldev);
+ priv = dev_get_drvdata(&pdev->dev);
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;
+ if (!priv) {
+ err = -ENODEV;
+ goto out_put_dev;
+ }
/*
@@ -3626,6 +3626,8 @@ static int __init caam_algapi_init(void)
if (registered)
pr_info("caam algorithms registered in /proc/crypto\n");
+out_put_dev:
+ put_device(&pdev->dev);
return err;
}
diff --git a/drivers/crypto/caam/caamalg_qi.c b/drivers/crypto/caam/caamalg_qi.c
index a15ce9213310..c61921d32489 100644
--- a/drivers/crypto/caam/caamalg_qi.c
+++ b/drivers/crypto/caam/caamalg_qi.c
@@ -2492,12 +2492,15 @@ static int __init caam_qi_algapi_init(void)
* 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 || !priv->qi_present)
- return -ENODEV;
+ if (!priv || !priv->qi_present) {
+ err = -ENODEV;
+ goto out_put_dev;
+ }
if (caam_dpaa2) {
dev_info(ctrldev, "caam/qi frontend driver not suitable for DPAA 2.x, aborting...\n");
- return -ENODEV;
+ err = -ENODEV;
+ goto out_put_dev;
}
/*
@@ -2610,6 +2613,8 @@ static int __init caam_qi_algapi_init(void)
if (registered)
dev_info(priv->qidev, "algorithms registered in /proc/crypto\n");
+out_put_dev:
+ put_device(ctrldev);
return err;
}
diff --git a/drivers/crypto/caam/caamhash.c b/drivers/crypto/caam/caamhash.c
index d7483e4d0ce2..b1eadc6652b5 100644
--- a/drivers/crypto/caam/caamhash.c
+++ b/drivers/crypto/caam/caamhash.c
@@ -1993,7 +1993,6 @@ static int __init caam_algapi_hash_init(void)
{
struct device_node *dev_node;
struct platform_device *pdev;
- struct device *ctrldev;
int i = 0, err = 0;
struct caam_drv_private *priv;
unsigned int md_limit = SHA512_DIGEST_SIZE;
@@ -2012,16 +2011,17 @@ static int __init caam_algapi_hash_init(void)
return -ENODEV;
}
- ctrldev = &pdev->dev;
- priv = dev_get_drvdata(ctrldev);
+ priv = dev_get_drvdata(&pdev->dev);
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;
+ if (!priv) {
+ err = -ENODEV;
+ goto out_put_dev;
+ }
/*
* Register crypto algorithms the device supports. First, identify
@@ -2043,8 +2043,10 @@ static int __init caam_algapi_hash_init(void)
* Skip registration of any hashing algorithms if MD block
* is not present.
*/
- if (!md_inst)
- return -ENODEV;
+ if (!md_inst) {
+ err = -ENODEV;
+ goto out_put_dev;
+ }
/* Limit digest size based on LP256 */
if (md_vid == CHA_VER_VID_MD_LP256)
@@ -2101,6 +2103,8 @@ static int __init caam_algapi_hash_init(void)
list_add_tail(&t_alg->entry, &hash_list);
}
+out_put_dev:
+ put_device(&pdev->dev);
return err;
}
diff --git a/drivers/crypto/caam/caampkc.c b/drivers/crypto/caam/caampkc.c
index 77ab28a2811a..58285642306e 100644
--- a/drivers/crypto/caam/caampkc.c
+++ b/drivers/crypto/caam/caampkc.c
@@ -1042,8 +1042,10 @@ static int __init caam_pkc_init(void)
* 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;
+ if (!priv) {
+ err = -ENODEV;
+ goto out_put_dev;
+ }
/* Determine public key hardware accelerator presence. */
if (priv->era < 10)
@@ -1053,8 +1055,10 @@ static int __init caam_pkc_init(void)
pk_inst = rd_reg32(&priv->ctrl->vreg.pkha) & CHA_VER_NUM_MASK;
/* Do not register algorithms if PKHA is not present. */
- if (!pk_inst)
- return -ENODEV;
+ if (!pk_inst) {
+ err = -ENODEV;
+ goto out_put_dev;
+ }
err = crypto_register_akcipher(&caam_rsa);
if (err)
@@ -1063,6 +1067,8 @@ static int __init caam_pkc_init(void)
else
dev_info(ctrldev, "caam pkc algorithms registered in /proc/crypto\n");
+out_put_dev:
+ put_device(ctrldev);
return err;
}
diff --git a/drivers/crypto/caam/caamrng.c b/drivers/crypto/caam/caamrng.c
index a387c8d49a62..95eb5402c59f 100644
--- a/drivers/crypto/caam/caamrng.c
+++ b/drivers/crypto/caam/caamrng.c
@@ -308,7 +308,6 @@ static int __init caam_rng_init(void)
struct device *dev;
struct device_node *dev_node;
struct platform_device *pdev;
- struct device *ctrldev;
struct caam_drv_private *priv;
u32 rng_inst;
int err;
@@ -326,16 +325,17 @@ static int __init caam_rng_init(void)
return -ENODEV;
}
- ctrldev = &pdev->dev;
- priv = dev_get_drvdata(ctrldev);
+ priv = dev_get_drvdata(&pdev->dev);
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;
+ if (!priv) {
+ err = -ENODEV;
+ goto out_put_dev;
+ }
/* Check for an instantiated RNG before registration */
if (priv->era < 10)
@@ -344,13 +344,16 @@ static int __init caam_rng_init(void)
else
rng_inst = rd_reg32(&priv->ctrl->vreg.rng) & CHA_VER_NUM_MASK;
- if (!rng_inst)
- return -ENODEV;
+ if (!rng_inst) {
+ err = -ENODEV;
+ goto out_put_dev;
+ }
dev = caam_jr_alloc();
if (IS_ERR(dev)) {
pr_err("Job Ring Device allocation for transform failed\n");
- return PTR_ERR(dev);
+ err = PTR_ERR(dev);
+ goto out_put_dev;
}
rng_ctx = kmalloc(sizeof(*rng_ctx), GFP_DMA | GFP_KERNEL);
if (!rng_ctx) {
@@ -361,6 +364,7 @@ static int __init caam_rng_init(void)
if (err)
goto free_rng_ctx;
+ put_device(&pdev->dev);
dev_info(dev, "registering rng-caam\n");
return hwrng_register(&caam_rng);
@@ -368,6 +372,8 @@ static int __init caam_rng_init(void)
kfree(rng_ctx);
free_caam_alloc:
caam_jr_free(dev);
+out_put_dev:
+ put_device(&pdev->dev);
return err;
}
--
2.17.1
