Disable dark resume on test images.
Several tests depend on RTC to wakeup from suspend. But on devices
with dark resume enabled, powerd will suspend the device immediately
on wake from RTC. This can interfere with the tests. Thus
200disableDarkResume is expected to disable dark resume on test images
so that a wake from RTC will result in a full resume. When dark resume
is enabled on specifice device via cros_config, only
/var/lib/power_manager/disable_dark_resume can overwrite it. Thus set
the same file.
Tests that have to test dark
resume will create a temporary directory and mount it inplace of the
above one.
BUG=b:141459234
TEST=None
Change-Id: I13f6a58439bd92395fcf3222282229af03dd8b45
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosutils/+/1825944
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Ravi Chandra Sadineni <ravisadineni@chromium.org>
Auto-Submit: Ravi Chandra Sadineni <ravisadineni@chromium.org>
Legacy-Commit-Queue: Commit Bot <commit-bot@chromium.org>
Commit-Queue: Ravi Chandra Sadineni <ravisadineni@chromium.org>
diff --git a/mod_for_test_scripts/200disableDarkResume b/mod_for_test_scripts/200disableDarkResume
index bbd61d4..460443e 100755
--- a/mod_for_test_scripts/200disableDarkResume
+++ b/mod_for_test_scripts/200disableDarkResume
@@ -4,11 +4,14 @@
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
-mkdir -p "${ROOT_FS_DIR}/usr/share/power_manager/board_specific"
-echo 1 > "${ROOT_FS_DIR}/usr/share/power_manager/board_specific/disable_dark_resume"
+# Several tests depend on RTC to wakeup from suspend. But on devices with dark
+# resume enabled, powerd will suspend the device immediately on wake from RTC.
+# This can interfere with the tests. Thus this script disables dark resume on
+# test images. powerd gives highest precedence to settings under
+# /var/lib/power_manager. Thus this overrides settings from other sources.
+# Please look at power_manager/docs/faq.md#powerd-preferences for preference
+# order. If a test intends to enable dark resume, it should create a temporary
+# directory and mount it in place of /var/lib/power_manager and restart powerd.
+mkdir -p "${ROOT_FS_DIR}/var/lib/power_manager/"
+echo 1 > "${ROOT_FS_DIR}/var/lib/power_manager/disable_dark_resume"
-# This file is only present on link currently. Presence of this file will
-# automatically enable legacy_dark_resume.cc. Enabling legacy_dark_resume.cc
-# will hinder tests that use wakeup alarm for waking up for suspend.
-# So deleting the file.
-rm -f "${ROOT_FS_DIR}/usr/share/power_manager/board_specific/dark_resume_suspend_durations"
