drm/i915: Only pwrite through the GTT if there is space in the aperture

Avoid stalling and waiting for the GPU by checking to see if there is
sufficient inactive space in the aperture for us to bind the buffer
prior to writing through the GTT. If there is inadequate space we will
have to stall waiting for the GPU, and incur overheads moving objects
about. Instead, only incur the clflush overhead on the target object by
writing through shmem.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/drm/i915/intel_overlay.c b/drivers/gpu/drm/i915/intel_overlay.c
index c0f48580405a..afd0f30ab882 100644
--- a/drivers/gpu/drm/i915/intel_overlay.c
+++ b/drivers/gpu/drm/i915/intel_overlay.c
@@ -1383,7 +1383,7 @@ void intel_setup_overlay(struct drm_device *dev)
                 }
                 overlay->flip_addr = reg_bo->phys_obj->handle->busaddr;
         } else {
-                ret = i915_gem_object_pin(reg_bo, PAGE_SIZE, true);
+                ret = i915_gem_object_pin(reg_bo, PAGE_SIZE, true, false);
                 if (ret) {
                         DRM_ERROR("failed to pin overlay register bo\n");
                         goto out_free_bo;