drm/i915: disable stolen mem for OVERLAY_NEEDS_PHYSICAL

Our phys_object code can't deal with stolen memory and so blows up.
Fixing this is quite a bit of work and not worth it much for a single
page object, so just opt-out.

This is necessary prep work to enable stolen on gen2/3 platforms where
the overlay register file isn't stored in the gtt.

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

diff --git a/drivers/gpu/drm/i915/intel_overlay.c b/drivers/gpu/drm/i915/intel_overlay.c
index 2abb53e..9ec5a4e 100644 (file)
--- a/drivers/gpu/drm/i915/intel_overlay.c
+++ b/drivers/gpu/drm/i915/intel_overlay.c
@@ -1333,7 +1333,9 @@ void intel_setup_overlay(struct drm_device *dev)
 
        overlay->dev = dev;
 
-       reg_bo = i915_gem_object_create_stolen(dev, PAGE_SIZE);
+       reg_bo = NULL;
+       if (!OVERLAY_NEEDS_PHYSICAL(dev))
+               reg_bo = i915_gem_object_create_stolen(dev, PAGE_SIZE);
        if (reg_bo == NULL)
                reg_bo = i915_gem_alloc_object(dev, PAGE_SIZE);
        if (reg_bo == NULL)