drm/i915: Mark untiled BLT commands as fenced on gen2/3

[pandora-kernel.git] / drivers / gpu / drm / i915 / i915_gem.c

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index e48e01e..2e55d1c 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1543,16 +1543,19 @@ i915_gem_object_move_to_active(struct drm_i915_gem_object *obj,
        list_move_tail(&obj->ring_list, &ring->active_list);
 
        obj->last_rendering_seqno = seqno;
-       if (obj->fenced_gpu_access) {
-               struct drm_i915_fence_reg *reg;
-
-               BUG_ON(obj->fence_reg == I915_FENCE_REG_NONE);
 
+       if (obj->fenced_gpu_access) {
                obj->last_fenced_seqno = seqno;
                obj->last_fenced_ring = ring;
 
-               reg = &dev_priv->fence_regs[obj->fence_reg];
-               list_move_tail(&reg->lru_list, &dev_priv->mm.fence_list);
+               /* Bump MRU to take account of the delayed flush */
+               if (obj->fence_reg != I915_FENCE_REG_NONE) {
+                       struct drm_i915_fence_reg *reg;
+
+                       reg = &dev_priv->fence_regs[obj->fence_reg];
+                       list_move_tail(&reg->lru_list,
+                                      &dev_priv->mm.fence_list);
+               }
        }
 }