diff options
| author | Liam Girdwood <liam.r.girdwood@linux.intel.com> | 2018-06-14 20:26:42 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-10-10 08:52:07 +0200 |
| commit | 436dae6ae264e9976e323aae234d4b7d02708363 (patch) | |
| tree | 0e1f332a49f735f2fad5184e85c7518693e90f5e /sound | |
| parent | 55e16f49e210a6bad5f856a1ecfa954d7a0dbae7 (diff) | |
ASoC: dapm: Fix potential DAI widget pointer deref when linking DAIs
[ Upstream commit e01b4f624278d5efe5fb5da585ca371947b16680 ]
Sometime a component or topology may configure a DAI widget with no
private data leading to a dev_dbg() dereferencne of this data.
Fix this to check for non NULL private data and let users know if widget
is missing DAI.
Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/soc-dapm.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 9e784cc3e5d2..0aefed8ab0cf 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -3864,6 +3864,13 @@ int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card) continue; } + /* let users know there is no DAI to link */ + if (!dai_w->priv) { + dev_dbg(card->dev, "dai widget %s has no DAI\n", + dai_w->name); + continue; + } + dai = dai_w->priv; /* ...find all widgets with the same stream and link them */ |