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ASoC: qcom: common: Fix NULL pointer in of parser 

A snd_soc_dai_link_component is allocated and associated with the first
link, so when the code tries to assign the of_node of the second link's
"cpu" member it dereferences a NULL pointer.

Fix this by moving the allocation and assignement of
snd_soc_dai_link_components into the loop, giving us one pair per link.

Fixes: 1e36ea360a ("ASoC: qcom: common: use modern dai_link style")
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Bjorn Andersson 2019-06-17 22:28:13 -07:00 committed by Mark Brown
parent e711223ad3
commit 16395ceee1
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GPG Key ID: 24D68B725D5487D0
1 changed files with 10 additions and 10 deletions
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20
sound/soc/qcom/common.c
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@ -42,17 +42,17 @@ int qcom_snd_parse_of(struct snd_soc_card *card)
card->num_links = num_links;
link = card->dai_link;
dlc = devm_kzalloc(dev, 2 * sizeof(*dlc), GFP_KERNEL);
if (!dlc)
return -ENOMEM;
link->cpus = &dlc[0];
link->platforms = &dlc[1];
link->num_cpus = 1;
link->num_platforms = 1;
for_each_child_of_node(dev->of_node, np) {
dlc = devm_kzalloc(dev, 2 * sizeof(*dlc), GFP_KERNEL);
if (!dlc)
return -ENOMEM;
link->cpus = &dlc[0];
link->platforms = &dlc[1];
link->num_cpus = 1;
link->num_platforms = 1;
cpu = of_get_child_by_name(np, "cpu");
platform = of_get_child_by_name(np, "platform");
codec = of_get_child_by_name(np, "codec");