commit 7a1030b1506f4c8ec3647265d1c46fb1d68fa8e5
author Derek Basehore <dbasehore@chromium.org> Sun Apr 02 23:47:30 2017 -0700
committer chrome-bot <chrome-bot@chromium.org> Mon Apr 03 21:37:33 2017 -0700
tree 6a2d1f07eb572f94ce636200b3dda37a3d794333
parent 37377e9cd703605f3bec4598898d0ce86f3e5188

power_utils: Set _psr_path to the empty string by default

If we never set the _psr_path attribute, we run into an unhandled
exception. This sets the _psr_path attribute for the
DisplayPanelSelfRefresh class to '' when we don't find the PSR
counter file.

BUG=None
TEST=power_LoadTest on elm

Change-Id: I86cca10ba54b0be11f2ee4fc666ffe3758dcdf16
Reviewed-on: https://chromium-review.googlesource.com/465459
Commit-Ready: Derek Basehore <dbasehore@chromium.org>
Tested-by: Derek Basehore <dbasehore@chromium.org>
Reviewed-by: Dan Erat <derat@chromium.org>

client/cros/power_utils.py

diff --git a/client/cros/power_utils.py b/client/cros/power_utils.py
index 8926669..17c89e6 100644
--- a/client/cros/power_utils.py
+++ b/client/cros/power_utils.py
@@ -783,6 +783,7 @@
             _init_counter: integer of initial value of residency counter.
             _keyvals: dictionary of keyvals
         """
+        self._psr_path = ''
         if os.path.exists(self._PSR_STATUS_FILE_X86):
             self._psr_path = self._PSR_STATUS_FILE_X86
             self._psr_parse_prefix = 'Performance_Counter:'