tree 8f2c848652ad3d12dbca6b6085148ff3b2304e52
parent b1d721d0d7c592d0a13e8d49f65dce99403aa243
author Vince Hsu <vince.h@nvidia.com> 1467866121 +0800
committer Ajay Dudani <adudani@google.com> 1467949107 -0700

CHROMIUM: drm/nouveau: fix incorrect return code

The mutex_trylock returns zero when the locks is on contension, and we
use it as the return code of nouveau_do_suspend directly. In that case
the system suspend will go on, but the nouveau won't do the suspend
process properly. That makes the GPU start behaving weirdly. This patch
fixes that bug by returning a proper error code.

BUG=chrome-os-partner:54432
TEST=Suspend can be aborted when the cli->mutex is on contension

Change-Id: I4b4ac4f77ac02914f882fb6f5d55fdb82db148f7
Signed-off-by: Vince Hsu <vince.h@nvidia.com>
Reviewed-on: https://chromium-review.googlesource.com/358336
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Ajay Dudani <adudani@google.com>