[2/2] ASoC: soc-topology: use devm_snd_soc_register_dai()

Message ID 20200612205938.26415-3-pierre-louis.bossart@linux.intel.com
State New
Headers show
Series
  • ASoC: topology: fix use-after-free when removing components
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Commit Message

Pierre-Louis Bossart June 12, 2020, 8:59 p.m.
Use devm_ to avoid use-after-free KASAN reports and simplify error
handling.

BugLink: https://github.com/thesofproject/linux/issues/2186
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
---
 sound/soc/soc-topology.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Patch

diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
index 9e89633676b7..43e5745b06aa 100644
--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -1851,7 +1851,7 @@  static int soc_tplg_dai_create(struct soc_tplg *tplg,
 	list_add(&dai_drv->dobj.list, &tplg->comp->dobj_list);
 
 	/* register the DAI to the component */
-	dai = snd_soc_register_dai(tplg->comp, dai_drv, false);
+	dai = devm_snd_soc_register_dai(tplg->comp->dev, tplg->comp, dai_drv, false);
 	if (!dai)
 		return -ENOMEM;
 
@@ -1859,7 +1859,6 @@  static int soc_tplg_dai_create(struct soc_tplg *tplg,
 	ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
 	if (ret != 0) {
 		dev_err(dai->dev, "Failed to create DAI widgets %d\n", ret);
-		snd_soc_unregister_dai(dai);
 		return ret;
 	}