GEM: Clear obj_priv->agp_mem when we free it.

Still managing to get something wrong with this, oopsing down in agp.

diff --git a/linux-core/i915_gem.c b/linux-core/i915_gem.c
index be30d6b..caead91 100644 (file)
--- a/linux-core/i915_gem.c
+++ b/linux-core/i915_gem.c
@@ -211,6 +211,7 @@ i915_gem_object_unbind(struct drm_gem_object *obj)
        if (obj_priv->agp_mem != NULL) {
                drm_unbind_agp(obj_priv->agp_mem);
                drm_free_agp(obj_priv->agp_mem, obj->size / PAGE_SIZE);
+               obj_priv->agp_mem = NULL;
        }
 
        i915_gem_object_free_page_list(obj);