This driver bug has been fixed in 20.19.15.4624.

BUG=chromium:644033

Change-Id: I6f621d7c4d4b823da29255f869af84097f4f7c2c
Reviewed-on: https://chromium-review.googlesource.com/476118Reviewed-by: Yunchao He <yunchao.he@intel.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>