[Bug 105539] New: rc6 enablement fails in suspend resume stress test

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105539

            Bug ID: 105539
           Summary: rc6 enablement fails in suspend resume stress test
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: abhijeet.kumar at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

while true; do
    echo 0 > /sys/class/rtc/rtc0/wakealarm
    echo `date '+%s' -d '+ 3 seconds'` > /sys/class/rtc/rtc0/wakealarm
    dmesg|grep "SLP" |tail -1
    # sleep 1 #with and without commenting this line
    echo freeze >/sys/power/state
done

We would see Suspend-To-Idle entry failing with the below Warning message while
suspend stress test. Above is step to repro the issue. Occurrence is 20-30% and
it's sporadic.

2018-02-23T03:12:24.347693-08:00 DEBUG kernel: [ 479.756025] PM:
suspend-to-idle
2018-02-23T03:12:24.347710-08:00 WARNING kernel: [ 480.756211] CPU did not
2018-02-23T03:12:24.348021-08:00 DEBUG kernel: [ 480.756576] PM: resume from
suspend-to-idle enter SLP S0 for suspend-to-idle.

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