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asoc: fix prepare error in pulseaudio loopback cases

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In pulseaudio, prepare comes just after open for every
substream in loopback cases, but the 'audio_client'
is not allocated for the first substream in every pcm.
And the returned error causes the failure of pulseaudio
initialization for all loopback cases.

Change-Id: I7fb6c1f23b9cf2660e4dd519a731c7e13a809a4a
Signed-off-by: Guodong Hu <guodhu@codeaurora.org>
This commit is contained in:
Guodong Hu 2020-04-14 23:03:31 +08:00 • committed by Gerrit - the friendly Code Review server
commit b36d8ca714
1 changed files with 6 additions and 6 deletions
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12
asoc/msm-pcm-loopback-v2.c
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@ -448,12 +448,6 @@ static int msm_pcm_prepare(struct snd_pcm_substream *substream)
dev_dbg(component->dev, "%s: ASM loopback stream:%d\n",
__func__, substream->stream);
if (!pcm || !pcm->audio_client) {
mutex_unlock(&pcm->lock);
pr_err("%s: private data null or audio client freed\n", __func__);
return -EINVAL;
}
if (pcm->playback_start && pcm->capture_start) {
mutex_unlock(&pcm->lock);
return ret;
@ -474,6 +468,12 @@ static int msm_pcm_prepare(struct snd_pcm_substream *substream)
pcm->capture_substream->private_data;
event.event_func = msm_pcm_route_event_handler;
event.priv_data = (void *) pcm;
if (!pcm->audio_client) {
mutex_unlock(&pcm->lock);
pr_err("%s: audio client freed\n", __func__);
return -EINVAL;
}
msm_pcm_routing_reg_phy_stream(soc_pcm_tx->dai_link->id,
pcm->audio_client->perf_mode,
pcm->session_id, pcm->capture_substream->stream);