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ASoC: dapm: Check for NULL widget in dapm_update_dai_unlocked

Message ID 20190206111359.30786-1-ckeepax@opensource.cirrus.com (mailing list archive)
State Accepted
Headers show
Series ASoC: dapm: Check for NULL widget in dapm_update_dai_unlocked | expand

Commit Message

Charles Keepax Feb. 6, 2019, 11:13 a.m. UTC
DAIs linked to the dummy will not have an associated playback/capture
widget, so we need to skip the update in that case.

Fixes: 078a85f2806f ("ASoC: dapm: Only power up active channels from a DAI")
Reported-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Tested-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 sound/soc/soc-dapm.c | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 5b74dffc9c11d..111a23a9708a2 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -2580,6 +2580,9 @@  static int dapm_update_dai_unlocked(struct snd_pcm_substream *substream,
 	else
 		w = dai->capture_widget;
 
+	if (!w)
+		return 0;
+
 	dev_dbg(dai->dev, "Update DAI routes for %s %s\n", dai->name,
 		dir == SNDRV_PCM_STREAM_PLAYBACK ? "playback" : "capture");