outb(oldlcr, baseio + UART_LCR);
 }
 
+#ifdef CONFIG_PCI
 static void mxser_disable_must_enchance_mode(unsigned long baseio)
 {
        u8 oldlcr;
        outb(efr, baseio + MOXA_MUST_EFR_REGISTER);
        outb(oldlcr, baseio + UART_LCR);
 }
+#endif
 
 static void mxser_set_must_xon1_value(unsigned long baseio, u8 value)
 {
        outb(oldlcr, baseio + UART_LCR);
 }
 
+#ifdef CONFIG_PCI
 static void mxser_get_must_hardware_id(unsigned long baseio, u8 *pId)
 {
        u8 oldlcr;
        *pId = inb(baseio + MOXA_MUST_HWID_REGISTER);
        outb(oldlcr, baseio + UART_LCR);
 }
+#endif
 
 static void SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(unsigned long baseio)
 {