[alsa-devel] [PATCH] ASoC: pcm: Use the power efficient workqueue for delayed powerdown

[Mark Brown]

From: Mark Brown <broonie at linaro.org>

There is no need to use a normal per-CPU workqueue for delayed power downs
as they're not timing or performance critical and waking up a core for them
would defeat some of the point.

Signed-off-by: Mark Brown <broonie at linaro.org>
---
 sound/soc/soc-pcm.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index b6c6403..f4f68cb 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -411,8 +411,9 @@ static int soc_pcm_close(struct snd_pcm_substream *substream)
 		} else {
 			/* start delayed pop wq here for playback streams */
 			rtd->pop_wait = 1;
-			schedule_delayed_work(&rtd->delayed_work,
-				msecs_to_jiffies(rtd->pmdown_time));
+			queue_delayed_work(system_power_efficient_wq,
+					   &rtd->delayed_work,
+					   msecs_to_jiffies(rtd->pmdown_time));
 		}
 	} else {
 		/* capture streams can be powered down now */
-- 
1.8.3.2