tree 4725c0bc83dc24e65c09d00a79f1521623a8e2d5
parent c8a8067f7d66bf77a0627e0b237b0b4486862a73
author Thierry Reding <treding@nvidia.com> 1440420430 +0200
committer Thierry Reding <treding@nvidia.com> 1446226852 +0100

drm/tegra: dc: Request/free syncpoint at init/exit

syncpoints are resources provided by host1x and their lifetime is tied
to the host1x device. They are not properly reference counted either, so
removing the host1x device before any of its clients causes a use-after-
free error. Adding proper reference counting would be a major enterprise
so work around it for now by requesting and freeing the syncpoint at
init and exit time, respectively. The host1x device is guaranteed to be
around at this point.

Signed-off-by: Thierry Reding <treding@nvidia.com>