[ALSA] soc - 0.13 ASoC DAPM bug fix for unnamed streams
This patch fixes a bug whereby an unnamed stream would cause a NULL pointer ref in snd_soc_dapm_stream_event(). Signed-off-by: Seth Forshee <seth.forshee@gmail.com> Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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@ -1239,6 +1239,9 @@ int snd_soc_dapm_stream_event(struct snd_soc_codec *codec,
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{
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struct snd_soc_dapm_widget *w;
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if (stream == NULL)
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return 0;
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mutex_lock(&codec->mutex);
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list_for_each_entry(w, &codec->dapm_widgets, list)
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{
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