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ALSA: fireworks: change the range of critical section for stream data in PCM.hw_free callback 

The operation of duplex streams should be in critical section.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
alistair/sunxi64-5.4-dsi
Takashi Sakamoto 2019-06-15 18:11:00 +09:00 committed by Takashi Iwai
parent d173265ae3
commit c6b84ffbd5
1 changed files with 5 additions and 4 deletions
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9
sound/firewire/fireworks/fireworks_pcm.c
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@ -247,14 +247,15 @@ static int pcm_hw_free(struct snd_pcm_substream *substream)
{
struct snd_efw *efw = substream->private_data;
if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) {
mutex_lock(&efw->mutex);
mutex_lock(&efw->mutex);
if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
--efw->substreams_counter;
mutex_unlock(&efw->mutex);
}
snd_efw_stream_stop_duplex(efw);
mutex_unlock(&efw->mutex);
return snd_pcm_lib_free_vmalloc_buffer(substream);
}