mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-05 00:25:24 -04:00
Code Issues Packages Projects Releases Wiki Activity

ASoC: meson: axg-card: fix null pointer dereference in clean up

Browse Source 
When using modern dai_link style, we must first make sure the
struct snd_soc_dai_link_component exists before accessing its members.

In case of early probe deferral, some of the '.cpus' or '.codecs' may not
have been allocated yet. Check this before calling of_node_put() on the
structure member.

Fixes: c84836d7f6 ("ASoC: meson: axg-card: use modern dai_link style")
Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jerome Brunet
2019-06-10 14:53:44 +02:00
committed by Mark Brown
parent 6c0215f5d9
commit 960f428ca0
1 changed files with 4 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
sound/soc/meson/axg-card.c
View File

@@ -115,9 +115,11 @@ static void axg_card_clean_references(struct axg_card *priv)
if (card->dai_link) {
for_each_card_prelinks(card, i, link) {
of_node_put(link->cpus->of_node);
if (link->cpus)
of_node_put(link->cpus->of_node);
for_each_link_codecs(link, j, codec)
of_node_put(codec->of_node);
if (codec)
of_node_put(codec->of_node);
}
}