ONLY pressing the recovery button okays booting from USB

BUG=chrome-os-partner:1113
TEST=manual

With the dev-switch OFF, insert a bootable USB drive, reboot while holding
down recovery button. It should boot from the USB without prompting for
removal.

With the dev-switch OFF and the same bootable USB drive inserted, run

  crossystem recovery_request=2
  reboot

The BIOS screen should prompt you to remove the USB drive, then to insert it
before it will boot from the USB.

Prior to this fix, using recovery_request=2 would NOT require removal, while
other non-zero values would. NO values of recovery_request should be able to
override the removal request. Only physically pressing the button should
allow booting immediately from recovery mode with the dev-switch OFF.

(cherry picked from commit 759d5c4ccda67308695d09f3448e3edb1910dd53)

Change-Id: Ie05c3bee611310de68ff33c0d3909e00c4455135
Reviewed-on: https://gerrit.chromium.org/gerrit/12143
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Tested-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/12445
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Commit-Ready: Stefan Reinauer <reinauer@chromium.org>
Tested-by: Stefan Reinauer <reinauer@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/12797
Reviewed-by: Bill Richardson <wfrichar@chromium.org>

0 files changed, 0 insertions, 0 deletions