Commits
Zhenyu Wang committed a1786bd270b
drm/i915: Unmask interrupt for render engine on Sandybridge With splitted engines on Sandybridge, each engine has its own interrupt control as well. This unmasks the interrupt to properly enable pipe control notify event for render engine. Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by: Eric Anholt <eric@anholt.net>