static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
                         unsigned int set, unsigned int clear);
 static void moxa_poll(unsigned long);
-static void set_tty_param(struct tty_struct *);
-static int block_till_ready(struct tty_struct *, struct file *,
+static void moxa_set_tty_param(struct tty_struct *);
+static int moxa_block_till_ready(struct tty_struct *, struct file *,
                            struct moxa_port *);
-static void setup_empty_event(struct tty_struct *);
-static void check_xmit_empty(unsigned long);
-static void shut_down(struct moxa_port *);
-static void receive_data(struct moxa_port *);
+static void moxa_setup_empty_event(struct tty_struct *);
+static void moxa_check_xmit_empty(unsigned long);
+static void moxa_shut_down(struct moxa_port *);
+static void moxa_receive_data(struct moxa_port *);
 /*
  * moxa board interface functions:
  */
                init_waitqueue_head(&ch->open_wait);
                init_waitqueue_head(&ch->close_wait);
 
-               setup_timer(&ch->emptyTimer, check_xmit_empty,
+               setup_timer(&ch->emptyTimer, moxa_check_xmit_empty,
                                (unsigned long)ch);
        }
 
        ch->tty = tty;
        if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
                ch->statusflags = 0;
-               set_tty_param(tty);
+               moxa_set_tty_param(tty);
                MoxaPortLineCtrl(ch->port, 1, 1);
                MoxaPortEnable(ch->port);
                ch->asyncflags |= ASYNC_INITIALIZED;
        }
-       retval = block_till_ready(tty, filp, ch);
+       retval = moxa_block_till_ready(tty, filp, ch);
 
        moxa_unthrottle(tty);
 
 
        ch->cflag = tty->termios->c_cflag;
        if (ch->asyncflags & ASYNC_INITIALIZED) {
-               setup_empty_event(tty);
+               moxa_setup_empty_event(tty);
                tty_wait_until_sent(tty, 30 * HZ);      /* 30 seconds timeout */
                del_timer_sync(&moxa_ports[ch->port].emptyTimer);
        }
-       shut_down(ch);
+       moxa_shut_down(ch);
        MoxaPortFlushData(port, 2);
 
        if (tty->driver->flush_buffer)
                 * in tty_ioctl.c, etc.
                 */
                if (!(ch->statusflags & EMPTYWAIT))
-                       setup_empty_event(tty);
+                       moxa_setup_empty_event(tty);
        }
        return (chars);
 }
                retval = tty_check_change(tty);
                if (retval)
                        return (retval);
-               setup_empty_event(tty);
+               moxa_setup_empty_event(tty);
                tty_wait_until_sent(tty, 0);
                if (!arg)
                        MoxaPortSendBreak(ch->port, 0);
                retval = tty_check_change(tty);
                if (retval)
                        return (retval);
-               setup_empty_event(tty);
+               moxa_setup_empty_event(tty);
                tty_wait_until_sent(tty, 0);
                MoxaPortSendBreak(ch->port, arg);
                return (0);
 
        if (ch == NULL)
                return;
-       set_tty_param(tty);
+       moxa_set_tty_param(tty);
        if (!(old_termios->c_cflag & CLOCAL) &&
            (tty->termios->c_cflag & CLOCAL))
                wake_up_interruptible(&ch->open_wait);
        struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
 
        moxa_flush_buffer(tty);
-       shut_down(ch);
+       moxa_shut_down(ch);
        ch->event = 0;
        ch->count = 0;
        ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
                                continue;
                        if (!(ch->statusflags & THROTTLE) &&
                            (MoxaPortRxQueue(ch->port) > 0))
-                               receive_data(ch);
+                               moxa_receive_data(ch);
                        if ((tp = ch->tty) == 0)
                                continue;
                        if (ch->statusflags & LOWWAIT) {
 
 /******************************************************************************/
 
-static void set_tty_param(struct tty_struct *tty)
+static void moxa_set_tty_param(struct tty_struct *tty)
 {
        register struct ktermios *ts;
        struct moxa_port *ch;
        MoxaPortSetTermio(ch->port, ts, tty_get_baud_rate(tty));
 }
 
-static int block_till_ready(struct tty_struct *tty, struct file *filp,
+static int moxa_block_till_ready(struct tty_struct *tty, struct file *filp,
                            struct moxa_port *ch)
 {
        DECLARE_WAITQUEUE(wait,current);
        return 0;
 }
 
-static void setup_empty_event(struct tty_struct *tty)
+static void moxa_setup_empty_event(struct tty_struct *tty)
 {
        struct moxa_port *ch = tty->driver_data;
        unsigned long flags;
        spin_unlock_irqrestore(&moxa_lock, flags);
 }
 
-static void check_xmit_empty(unsigned long data)
+static void moxa_check_xmit_empty(unsigned long data)
 {
        struct moxa_port *ch;
 
                ch->statusflags &= ~EMPTYWAIT;
 }
 
-static void shut_down(struct moxa_port *ch)
+static void moxa_shut_down(struct moxa_port *ch)
 {
        struct tty_struct *tp;
 
        ch->asyncflags &= ~ASYNC_INITIALIZED;
 }
 
-static void receive_data(struct moxa_port *ch)
+static void moxa_receive_data(struct moxa_port *ch)
 {
        struct tty_struct *tp;
        struct ktermios *ts;
 static int moxaFuncTout = HZ / 2;
 
 static void moxafunc(void __iomem *, int, ushort);
-static void wait_finish(void __iomem *);
-static void low_water_check(void __iomem *);
+static void moxa_wait_finish(void __iomem *);
+static void moxa_low_water_check(void __iomem *);
 static int moxaloadbios(int, unsigned char __user *, int);
 static int moxafindcard(int);
 static int moxaload320b(int, unsigned char __user *, int);
        moxafunc(ofsAddr, FC_FlushQueue, mode);
        if (mode != 1) {
                moxa_ports[port].lowChkFlag = 0;
-               low_water_check(ofsAddr);
+               moxa_low_water_check(ofsAddr);
        }
 }
 
                                if (moxa_ports[p].lowChkFlag) {
                                        moxa_ports[p].lowChkFlag = 0;
                                        ofsAddr = moxa_ports[p].tableAddr;
-                                       low_water_check(ofsAddr);
+                                       moxa_low_water_check(ofsAddr);
                                }
                        }
                }
                writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
                writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
                writeb(FC_SetXonXoff, ofsAddr + FuncCode);
-               wait_finish(ofsAddr);
+               moxa_wait_finish(ofsAddr);
 
        }
        return (0);
 
        writew(arg, ofsAddr + FuncArg);
        writew(cmd, ofsAddr + FuncCode);
-       wait_finish(ofsAddr);
+       moxa_wait_finish(ofsAddr);
 }
 
-static void wait_finish(void __iomem *ofsAddr)
+static void moxa_wait_finish(void __iomem *ofsAddr)
 {
        unsigned long i, j;
 
        }
 }
 
-static void low_water_check(void __iomem *ofsAddr)
+static void moxa_low_water_check(void __iomem *ofsAddr)
 {
        int len;
        ushort rptr, wptr, mask;