+
+ if (new_state) {
+ /*
+ * To change the MAC configuration we need to disable
+ * the controller. To do so, we have to either grab
+ * ugeth->lock, which is a bad idea since 'graceful
+ * stop' commands might take quite a while, or we can
+ * quiesce driver's activity.
+ */
+ ugeth_quiesce(ugeth);
+ ugeth_disable(ugeth, COMM_DIR_RX_AND_TX);
+
+ out_be32(&ug_regs->maccfg2, tempval);
+ out_be32(&uf_regs->upsmr, upsmr);
+
+ ugeth_enable(ugeth, COMM_DIR_RX_AND_TX);
+ ugeth_activate(ugeth);
+ }