struct ovl_priv_data ovl_priv_data_array[MAX_DSS_OVERLAYS];
        struct mgr_priv_data mgr_priv_data_array[MAX_DSS_MANAGERS];
 
-       bool fifo_merge_dirty;
-       bool fifo_merge;
-
        bool irq_enabled;
 } dss_data;
 
                mp->shadow_extra_info_dirty = true;
 }
 
-static void dss_write_regs_common(void)
-{
-       const int num_mgrs = omap_dss_get_num_overlay_managers();
-       int i;
-
-       if (!dss_data.fifo_merge_dirty)
-               return;
-
-       for (i = 0; i < num_mgrs; ++i) {
-               struct omap_overlay_manager *mgr;
-               struct mgr_priv_data *mp;
-
-               mgr = omap_dss_get_overlay_manager(i);
-               mp = get_mgr_priv(mgr);
-
-               if (mp->enabled) {
-                       if (dss_data.fifo_merge_dirty) {
-                               dispc_enable_fifomerge(dss_data.fifo_merge);
-                               dss_data.fifo_merge_dirty = false;
-                       }
-
-                       if (mp->updating)
-                               mp->shadow_info_dirty = true;
-               }
-       }
-}
-
 static void dss_write_regs(void)
 {
        const int num_mgrs = omap_dss_get_num_overlay_managers();
        int i;
 
-       dss_write_regs_common();
-
        for (i = 0; i < num_mgrs; ++i) {
                struct omap_overlay_manager *mgr;
                struct mgr_priv_data *mp;
        dss_mgr_write_regs(mgr);
        dss_mgr_write_regs_extra(mgr);
 
-       dss_write_regs_common();
-
        mp->updating = true;
 
        if (!dss_data.irq_enabled && need_isr())
        op->extra_info_dirty = true;
 }
 
-static void dss_apply_fifo_merge(bool use_fifo_merge)
-{
-       if (dss_data.fifo_merge == use_fifo_merge)
-               return;
-
-       dss_data.fifo_merge = use_fifo_merge;
-       dss_data.fifo_merge_dirty = true;
-}
-
 static void dss_ovl_setup_fifo(struct omap_overlay *ovl)
 {
        struct ovl_priv_data *op = get_ovl_priv(ovl);