ASoC: soc-pcm: skip dpcm path checking with incapable/unready FE
Skip dpcm path checking for playback or capture, if corresponding FE
doesn't support playback or capture, or currently is not ready. It
can reduce the unnecessary cost to search connected widgets.
[Tweaked comments for clarity -- broonie]
Signed-off-by: Qiao Zhou <zhouqiao@marvell.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 002311a..2f4f074 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -2248,7 +2248,13 @@
fe->dai_link->name);
/* skip if FE doesn't have playback capability */
- if (!fe->cpu_dai->driver->playback.channels_min)
+ if (!fe->cpu_dai->driver->playback.channels_min
+ || !fe->codec_dai->driver->playback.channels_min)
+ goto capture;
+
+ /* skip if FE isn't currently playing */
+ if (!fe->cpu_dai->playback_active
+ || !fe->codec_dai->playback_active)
goto capture;
paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_PLAYBACK, &list);
@@ -2278,7 +2284,13 @@
dpcm_path_put(&list);
capture:
/* skip if FE doesn't have capture capability */
- if (!fe->cpu_dai->driver->capture.channels_min)
+ if (!fe->cpu_dai->driver->capture.channels_min
+ || !fe->codec_dai->driver->capture.channels_min)
+ continue;
+
+ /* skip if FE isn't currently capturing */
+ if (!fe->cpu_dai->capture_active
+ || !fe->codec_dai->capture_active)
continue;
paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_CAPTURE, &list);