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If we don't do this, some code later on (like the S3 hook) might check the POWER_GOOD too early, note that it's on and move to the wrong state: [8.457344 power button not released in time] [8.457541 long-press button, shutdown] // power_off() happens: [8.459853 power shutdown complete] [8.593443 power state 7 = S0->S3, in 0x0001] [8.593653 power state 2 = S3, in 0x0001] // power_get_signals check happens here ^^^, but POWER_GOOD did not have enough // time to fall and cause the power_update_signals interrupt [8.593863 power state 6 = S3->S0, in 0x0001] [8.594132 power state 3 = S0, in 0x0000] // system is actually off here BUG=chrome-os-partner:34816 TEST=Hold Power+Refresh, release after about 10 seconds, the ec should not have an assertion error and reboot BRANCH=veyron Change-Id: Ic7a06a5d255f2b8d056b0b454fc32a4c05c998b4 Signed-off-by: Alexandru M Stan <amstan@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/242620 Reviewed-by: Randall Spangler <rspangler@chromium.org> (cherry picked from commit 5f954620fa3d36e8e1a88bf7d3963dc7996ec445) Reviewed-on: https://chromium-review.googlesource.com/242711