diff options
| author | Aashish Sharma <shraash@google.com> | 2023-04-11 06:04:31 +0530 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-04-11 12:40:07 +0100 |
| commit | beed115c2ce78f990222a29abed042582df4e87c (patch) | |
| tree | e62d1bdb5e5e51e93ec45300edd2297c29d66b5e /sound/soc/mediatek | |
| parent | faf15233e59052f4d61cad2da6e56daf33124d96 (diff) | |
| download | lwn-beed115c2ce78f990222a29abed042582df4e87c.tar.gz lwn-beed115c2ce78f990222a29abed042582df4e87c.zip | |
ASoC: mediatek: common: Fix refcount leak in parse_dai_link_info
Add missing of_node_put()s before the returns to balance
of_node_get()s and of_node_put()s, which may get unbalanced
in case the for loop 'for_each_available_child_of_node' returns
early.
Fixes: 4302187d955f ("ASoC: mediatek: common: add soundcard driver common code")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Julia Lawall <julia.lawall@inria.fr>
Link: https://lore.kernel.org/r/202304090504.2K8L6soj-lkp@intel.com/
Signed-off-by: Aashish Sharma <shraash@google.com>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Reviewed-by: Trevor Wu <trevor.wu@mediatek.com>
Link: https://lore.kernel.org/r/20230411003431.4048700-1-shraash@google.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/mediatek')
| -rw-r--r-- | sound/soc/mediatek/common/mtk-soundcard-driver.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/sound/soc/mediatek/common/mtk-soundcard-driver.c b/sound/soc/mediatek/common/mtk-soundcard-driver.c index 7c55c2cb1f21..738093451ccb 100644 --- a/sound/soc/mediatek/common/mtk-soundcard-driver.c +++ b/sound/soc/mediatek/common/mtk-soundcard-driver.c @@ -47,20 +47,26 @@ int parse_dai_link_info(struct snd_soc_card *card) /* Loop over all the dai link sub nodes */ for_each_available_child_of_node(dev->of_node, sub_node) { if (of_property_read_string(sub_node, "link-name", - &dai_link_name)) + &dai_link_name)) { + of_node_put(sub_node); return -EINVAL; + } for_each_card_prelinks(card, i, dai_link) { if (!strcmp(dai_link_name, dai_link->name)) break; } - if (i >= card->num_links) + if (i >= card->num_links) { + of_node_put(sub_node); return -EINVAL; + } ret = set_card_codec_info(card, sub_node, dai_link); - if (ret < 0) + if (ret < 0) { + of_node_put(sub_node); return ret; + } } return 0; |