Commit f7a6021a authored by Jiasheng Jiang's avatar Jiasheng Jiang Committed by Mark Brown

ASoC: cpcap: Check for NULL pointer after calling of_get_child_by_name

If the device does not exist, of_get_child_by_name() will return NULL
pointer.
And devm_snd_soc_register_component() does not check it.
Also, I have noticed that cpcap_codec_driver has not been used yet.
Therefore, it should be better to check it in order to avoid the future
dereference of the NULL pointer.

Fixes: f6cdf2d3 ("ASoC: cpcap: new codec")
Signed-off-by: default avatarJiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20220111025048.524134-1-jiasheng@iscas.ac.cnSigned-off-by: default avatarMark Brown <broonie@kernel.org>
parent a64067f4
......@@ -1667,6 +1667,8 @@ static int cpcap_codec_probe(struct platform_device *pdev)
{
struct device_node *codec_node =
of_get_child_by_name(pdev->dev.parent->of_node, "audio-codec");
if (!codec_node)
return -ENODEV;
pdev->dev.of_node = codec_node;
......
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