forked from luck/tmp_suning_uos_patched
crypto: caam - Check for CAAM block presence before registering with crypto layer
The layer which registers with the crypto API should check for the presence of the CAAM device it is going to use. If the platform's device tree doesn't have the required CAAM node, the layer should return an error and not register the algorithms with crypto API layer. Signed-off-by: Ruchika Gupta <ruchika.gupta@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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5b635e280e
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35af640386
@ -2441,8 +2441,37 @@ static struct caam_crypto_alg *caam_alg_alloc(struct caam_alg_template
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static int __init caam_algapi_init(void)
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{
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struct device_node *dev_node;
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struct platform_device *pdev;
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struct device *ctrldev;
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void *priv;
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int i = 0, err = 0;
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dev_node = of_find_compatible_node(NULL, NULL, "fsl,sec-v4.0");
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if (!dev_node) {
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dev_node = of_find_compatible_node(NULL, NULL, "fsl,sec4.0");
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if (!dev_node)
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return -ENODEV;
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}
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pdev = of_find_device_by_node(dev_node);
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if (!pdev) {
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of_node_put(dev_node);
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return -ENODEV;
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}
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ctrldev = &pdev->dev;
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priv = dev_get_drvdata(ctrldev);
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of_node_put(dev_node);
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/*
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* If priv is NULL, it's probably because the caam driver wasn't
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* properly initialized (e.g. RNG4 init failed). Thus, bail out here.
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*/
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if (!priv)
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return -ENODEV;
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INIT_LIST_HEAD(&alg_list);
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/* register crypto algorithms the device supports */
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@ -1793,8 +1793,36 @@ caam_hash_alloc(struct caam_hash_template *template,
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static int __init caam_algapi_hash_init(void)
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{
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struct device_node *dev_node;
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struct platform_device *pdev;
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struct device *ctrldev;
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void *priv;
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int i = 0, err = 0;
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dev_node = of_find_compatible_node(NULL, NULL, "fsl,sec-v4.0");
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if (!dev_node) {
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dev_node = of_find_compatible_node(NULL, NULL, "fsl,sec4.0");
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if (!dev_node)
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return -ENODEV;
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}
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pdev = of_find_device_by_node(dev_node);
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if (!pdev) {
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of_node_put(dev_node);
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return -ENODEV;
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}
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ctrldev = &pdev->dev;
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priv = dev_get_drvdata(ctrldev);
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of_node_put(dev_node);
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/*
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* If priv is NULL, it's probably because the caam driver wasn't
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* properly initialized (e.g. RNG4 init failed). Thus, bail out here.
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*/
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if (!priv)
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return -ENODEV;
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INIT_LIST_HEAD(&hash_list);
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/* register crypto algorithms the device supports */
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@ -278,6 +278,34 @@ static void __exit caam_rng_exit(void)
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static int __init caam_rng_init(void)
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{
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struct device *dev;
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struct device_node *dev_node;
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struct platform_device *pdev;
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struct device *ctrldev;
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void *priv;
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dev_node = of_find_compatible_node(NULL, NULL, "fsl,sec-v4.0");
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if (!dev_node) {
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dev_node = of_find_compatible_node(NULL, NULL, "fsl,sec4.0");
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if (!dev_node)
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return -ENODEV;
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}
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pdev = of_find_device_by_node(dev_node);
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if (!pdev) {
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of_node_put(dev_node);
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return -ENODEV;
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}
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ctrldev = &pdev->dev;
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priv = dev_get_drvdata(ctrldev);
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of_node_put(dev_node);
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/*
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* If priv is NULL, it's probably because the caam driver wasn't
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* properly initialized (e.g. RNG4 init failed). Thus, bail out here.
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*/
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if (!priv)
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return -ENODEV;
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dev = caam_jr_alloc();
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if (IS_ERR(dev)) {
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