tree f314f2fa15e92cae85c9c8f53ae08efd16ea2367
parent edea097d55771083fd17075f2cc2c8c7a5449914
author Che-Liang Chiou <clchiou@chromium.org> 1342065764 +0800
committer Katie Roberts-Hoffman <katierh@chromium.org> 1342083627 -0700

CHERRY-PICK: crossystem: Return error when trying to read GPIO port zero

For the record, zero is a valid GPIO port number.  Unfortunately
firmware uses port zero to denote that a GPIO port is not exist.
So crossystem should not attempt to read GPIO port zero, but
return error instead.

Signed-off-by: Che-Liang Chiou <clchiou@chromium.org>

BUG=chrome-os-partner:11296
TEST=On Snow, run crossystem and see devsw_cur and recoverysw_cur
     are "(error)"

Change-Id: I36f201dcd098ff787707b5a5c7c741859c1ebd82
Original-Change-Id: I70b15824f613df1e46bf152515ad4e9362c9f066
Reviewed-on: https://gerrit.chromium.org/gerrit/27269
Reviewed-by: Bernie Thompson <bhthompson@chromium.org>
Reviewed-by: Che-Liang Chiou <clchiou@chromium.org>
Tested-by: Katie Roberts-Hoffman <katierh@chromium.org>