i915: cleanup pageflip derefs sarea even if no sarea exists

diff --git a/shared-core/i915_dma.c b/shared-core/i915_dma.c
index 47befeb..117f126 100644 (file)
--- a/shared-core/i915_dma.c
+++ b/shared-core/i915_dma.c
@@ -1070,10 +1070,12 @@ out_free:
 int i915_do_cleanup_pageflip(struct drm_device * dev)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
-       int i, planes, num_pages = dev_priv->sarea_priv->third_handle ? 3 : 2;
+       int i, planes, num_pages;
 
        DRM_DEBUG("%s\n", __FUNCTION__);
-
+       if (!dev_priv->sarea_priv)
+               return 0;
+       num_pages = dev_priv->sarea_priv->third_handle ? 3 : 2;
        for (i = 0, planes = 0; i < 2; i++) {
                if (dev_priv->sarea_priv->pf_current_page & (0x3 << (2 * i))) {
                        dev_priv->sarea_priv->pf_current_page =