Commit 094435d4 authored by Takashi Iwai's avatar Takashi Iwai
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ALSA: pcm: Avoid double hw_free calls at releasing a stream

snd_pcm_release_substream() always calls hw_free op when the stream
was opened.  This is superfluous in most cases because it's been
already released via explicit hw_free ioctl.  Although this double
call is usually OK as this callback should be written to be called
multiple times, it's better to avoid superfluous calls.
Reported-by: default avatarVinod Koul <>
Tested-by: default avatarJeeja Kp <>
Signed-off-by: default avatarTakashi Iwai <>
parent d8dfacf8
......@@ -2227,7 +2227,8 @@ void snd_pcm_release_substream(struct snd_pcm_substream *substream)
if (substream->hw_opened) {
if (substream->ops->hw_free != NULL)
if (substream->ops->hw_free &&
substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
substream->hw_opened = 0;
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