[BUG] CML : IPC CTX_SAVE S3 timeout failed due to ipc error -110

[sathyap-chrome]

Describe the bug
When S3 is attempted, there is IPC timeout during resume. And subsequent S3 also fails.
What have you tried to diagnose or workaround this issue?
From the signature, this seems to be similar to #1342
Please also read https://thesofproject.github.io/latest/howtos/process/bug-tracking.html for further information on submitting bugs.

To Reproduce
Enable S3 (instead of soix)
echo 0 > /var/lib/power_manager/suspend_to_idle
restart powerd
Then run suspend_stress_test -c 1
dmesg shows the IPC errors

Expected behavior
DSP should resume without issues

Impact
System stability as S3 criteria is broken

Environment

1. cml_drop004 FW and Topology and v6 kernel patches taken directly from UPSTREAM
2. sof-cml-rt5682-max98357a.tplg
3. CML.
4. Reproducibility Rate. : Always
   Screenshots or console output
   If applicable, add a screenshot (drag-and-drop an image), or console logs
   (cut-and-paste text and put a code fence (```) before and after, to help
   explain the issue.

s3_failure_sof_print.txt

Please also include the relevant sections from the firmware log and kernel log in the report (and attach the full logs for complete reference). Kernel log is taken from dmesg and firmware log from sof-logger. See https://thesofproject.github.io/latest/developer_guides/debugability/logger/index.html

[michalgrodzicki]

Hi @sathyap-chrome,
could you share FW/kernel git hashes which you used here?
Are you using typical HW configuration with I2S mode?

[sathyap-chrome]

The configuration is the typical i2s mode.
Kernel is latest set of upstream patches which is v6 patches of sof.

FW and Topology : (remotes/origin/cml-004-drop-stable) 3d1a95d414ab topology: add demux topology for apl and cml

[keqiaozhang]

@sathyap-chrome
Could you please share your kernel branch(Repo URL). I will try to reproduce this issue on my test device.

[lgirdwood]

@mengdonglin @wenqingfu fyi CTX_SAVE IPC timeout.