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ASoC: wm_adsp: Check for buffer in trigger stop

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Trigger stop can be called in situations where trigger start failed
and as such it can't be assumed the buffer is already attached to
the compressed stream or a NULL pointer may be dereferenced.

Fixes: 639e5eb3c7 ("ASoC: wm_adsp: Correct handling of compressed streams that restart")
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Charles Keepax 2019-04-02 13:49:14 +01:00 committed by Mark Brown
parent 6e3bfcff19
commit 43d147be57
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GPG Key ID: 24D68B725D5487D0
1 changed files with 2 additions and 1 deletions
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sound/soc/codecs/wm_adsp.c
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@ -3587,6 +3587,7 @@ int wm_adsp_compr_trigger(struct snd_compr_stream *stream, int cmd)
}
break;
case SNDRV_PCM_TRIGGER_STOP:
if (wm_adsp_compr_attached(compr))
wm_adsp_buffer_clear(compr->buf);
break;
default: