sc7180: Cancel the power button timer during the power state transition

A timer is created in the check_for_power_off_event(), which waits for
the power button long press. Should cancel the timer during the power
state transition; otherwise, EC will crash.

The S3 state calls the check_for_power_off_event() too. So cancel the
timer during S3->S0 and S3->S5.

BRANCH=None
BUG=b:163367454
TEST=Checked the bug scenario:
 * In VT2, run powerd_dbus_suspend and EC transits the state to S3.
 * Press power button
 * EC transits the state to S0; no crash.
TEST=Tested the normal shutdown case:
 * Hold the power button
 * After 8s, EC transits to S3 and then S5 after the power button is
   released.
TEST=Tested the change in check_for_power_off_event():
 * Hold the power button
 * In VT2, run "shutdown -H now" which makes POWER_GOOD drop
 * EC transits to S3 and then S5 after the power button is released

Change-Id: Ia279e890954cf77f94ae8907a2782f94265c849a
Signed-off-by: Wai-Hong Tam <waihong@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2346600
Reviewed-by: Stephen Boyd <swboyd@chromium.org>

0 files changed, 0 insertions, 0 deletions