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1f061316cf
intel_fbc_pre_update() depends upon the new state being already pinned in place in the Global GTT (primarily for both fencing which wants both an offset and a fence register, if assigned). This requires the call to intel_fbc_pre_update() be after intel_pin_and_fence_fb() - but commite8216e502a("drm/i915/fbc: call intel_fbc_pre_update earlier during page flips") moved the code way too much up in its attempt to call it before the page flip. v2 (from Paulo): - Point the original bad commit. - Add a comment to maybe prevent further regressions. Fixes:e8216e502a("drm/i915/fbc: call intel_fbc_pre_update earlier...") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Patrik Jakobsson <patrik.jakobsson@linux.intel.com> Cc: drm-intel-fixes@lists.freedesktop.org Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/1471462904-842-1-git-send-email-paulo.r.zanoni@intel.com Cc: stable@vger.kernel.org