u32     prop_id;
        u32     buf_id;
        struct drm_exynos_ipp_buf_info  buf_info;
-       struct drm_file         *filp;
 };
 
 /*
        c_node->dev = dev;
        c_node->property = *property;
        c_node->state = IPP_STATE_IDLE;
+       c_node->filp = file;
 
        c_node->start_work = ipp_create_cmd_work();
        if (IS_ERR(c_node->start_work)) {
                }
        }
 
-       m_node->filp = file;
        mutex_lock(&c_node->mem_lock);
        list_add_tail(&m_node->list, &c_node->mem_list[qbuf->ops_id]);
        mutex_unlock(&c_node->mem_lock);
                unsigned long handle = m_node->buf_info.handles[i];
                if (handle)
                        exynos_drm_gem_put_dma_addr(drm_dev, handle,
-                                                       m_node->filp);
+                                                       c_node->filp);
        }
 
        /* delete list in queue */
 
  * @stop_work: stop command work structure.
  * @event_work: event work structure.
  * @state: state of command node.
+ * @filp: associated file pointer.
  */
 struct drm_exynos_ipp_cmd_node {
        struct device           *dev;
        struct drm_exynos_ipp_cmd_work *stop_work;
        struct drm_exynos_ipp_event_work *event_work;
        enum drm_exynos_ipp_state       state;
+       struct drm_file *filp;
 };
 
 /*