Merge remote branch 'nouveau/drm-nouveau-fixes' of /ssd/git/drm-nouveau-next into drm-fixes

* 'nouveau/drm-nouveau-fixes' of /ssd/git/drm-nouveau-next:
  drm/nouveau: Fix a crash at card takedown for NV40 and older cards

drivers/gpu/drm/nouveau/nouveau_mem.c

@@ -152,8 +152,6 @@ nouveau_mem_vram_fini(struct drm_device *dev)
 {
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
 
-	nouveau_bo_ref(NULL, &dev_priv->vga_ram);
-
 	ttm_bo_device_release(&dev_priv->ttm.bdev);
 
 	nouveau_ttm_global_release(dev_priv);

drivers/gpu/drm/nouveau/nouveau_state.c

@@ -768,6 +768,11 @@ static void nouveau_card_takedown(struct drm_device *dev)
 	engine->mc.takedown(dev);
 	engine->display.late_takedown(dev);
 
+	if (dev_priv->vga_ram) {
+		nouveau_bo_unpin(dev_priv->vga_ram);
+		nouveau_bo_ref(NULL, &dev_priv->vga_ram);
+	}
+
 	mutex_lock(&dev->struct_mutex);
 	ttm_bo_clean_mm(&dev_priv->ttm.bdev, TTM_PL_VRAM);
 	ttm_bo_clean_mm(&dev_priv->ttm.bdev, TTM_PL_TT);