drm/i915: use drm_mm_takedown

I noticed this while doing the VMA abstraction. AFAICT, it won't
actually fix anything, but it is the correct thing to do.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 3cda752..4528367 100644 (file)
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1361,6 +1361,7 @@ cleanup_gem:
        i915_gem_cleanup_ringbuffer(dev);
        mutex_unlock(&dev->struct_mutex);
        i915_gem_cleanup_aliasing_ppgtt(dev);
+       drm_mm_takedown(&dev_priv->mm.gtt_space);
 cleanup_irq:
        drm_irq_uninstall(dev);
 cleanup_gem_stolen:
@@ -1778,6 +1779,7 @@ int i915_driver_unload(struct drm_device *dev)
                        i915_free_hws(dev);
        }
 
+       drm_mm_takedown(&dev_priv->mm.gtt_space);
        if (dev_priv->regs != NULL)
                pci_iounmap(dev->pdev, dev_priv->regs);