From cf17a5ffd27234371d10748bf1c716ef172877f3 Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Wed, 6 Feb 2019 11:13:59 +0000 Subject: [PATCH] ASoC: dapm: Check for NULL widget in dapm_update_dai_unlocked 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 Signed-off-by: Charles Keepax Tested-by: Sylwester Nawrocki Tested-by: Krzysztof Kozlowski Signed-off-by: Mark Brown --- sound/soc/soc-dapm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 5b74dffc9c11..111a23a9708a 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");