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ASoC: test-component: fix null pointer dereference.

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Dereferncing of_id pointer will result in exception in current
implementation since of_match_device() will assign it to NULL.
Adding NULL check for protection.

Signed-off-by: Ameer Hamza <amhamza.mgc@gmail.com>
Link: https://lore.kernel.org/r/20211205204200.7852-1-amhamza.mgc@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Ameer Hamza 2021-12-06 01:42:00 +05:00 committed by Mark Brown
parent e733ab7e3e
commit c686316ec1
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GPG Key ID: 24D68B725D5487D0
1 changed files with 4 additions and 1 deletions
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5
sound/soc/generic/test-component.c
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@ -532,13 +532,16 @@ static int test_driver_probe(struct platform_device *pdev)
struct device_node *node = dev->of_node; struct device_node *node = dev->of_node;
struct device_node *ep; struct device_node *ep;
const struct of_device_id *of_id = of_match_device(test_of_match, &pdev->dev); const struct of_device_id *of_id = of_match_device(test_of_match, &pdev->dev);
const struct test_adata *adata = of_id->data; const struct test_adata *adata;
struct snd_soc_component_driver *cdriv; struct snd_soc_component_driver *cdriv;
struct snd_soc_dai_driver *ddriv; struct snd_soc_dai_driver *ddriv;
struct test_dai_name *dname; struct test_dai_name *dname;
struct test_priv *priv; struct test_priv *priv;
int num, ret, i; int num, ret, i;
if (!of_id)
return -EINVAL;
adata = of_id->data;
num = of_graph_get_endpoint_count(node); num = of_graph_get_endpoint_count(node);
if (!num) { if (!num) {
dev_err(dev, "no port exits\n"); dev_err(dev, "no port exits\n");