[alsa-devel] [PATCH 01/21] ASoC: SOF: pci: mark last_busy value at runtime PM init

[Pierre-Louis Bossart]

From: Pan Xiuli <xiuli.pan at linux.intel.com>

If last_busy value is not set at runtime PM enable, the device will be
suspend immediately after usage counter is 0. Set the last_busy value to
make sure delay is working at first boot up.

Signed-off-by: Pan Xiuli <xiuli.pan at linux.intel.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
---
 sound/soc/sof/sof-pci-dev.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/soc/sof/sof-pci-dev.c b/sound/soc/sof/sof-pci-dev.c
index 65d1bac4c6b8..6fd3df7c57a3 100644
--- a/sound/soc/sof/sof-pci-dev.c
+++ b/sound/soc/sof/sof-pci-dev.c
@@ -223,6 +223,9 @@ static void sof_pci_probe_complete(struct device *dev)
 	 */
 	pm_runtime_allow(dev);
 
+	/* mark last_busy for pm_runtime to make sure not suspend immediately */
+	pm_runtime_mark_last_busy(dev);
+
 	/* follow recommendation in pci-driver.c to decrement usage counter */
 	pm_runtime_put_noidle(dev);
 }
-- 
2.20.1