Commits
Zhenyu Wang committed 5586c8bc93a
drm/i915: Add more registers save/restore for Ironlake suspend Add more display registers save/restore to fix unstable issues during S4 testing on Ironlake. And DPLL_B_MD should not be restored on Ironlake. Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by: Eric Anholt <eric@anholt.net>