Merge tag 'gvt-fixes-2017-07-11' of https://github.com/01org/gvt-linux into drm-intel...

Merge tag 'gvt-fixes-2017-07-11' of https://github.com/01org/gvt-linux into drm-intel-next-fixes

gvt-fixes-2017-07-11

- Revert "drm/i915/gvt: Fix possible recursive locking issue" (Chuanxiao),
  which is incomplete fix and it's actually VFIO issue, so revert.
- remove unneeded scheduler mutex for performance fix (Weinan)
- other misc error handling fix and cmd address audit

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170711055333.jhrmvx6ilvg2qlnn@zhen-hp.sh.intel.com