tty: moxa: Kill off the throttle method

The tty flag can be tested so the shadow flag isn't needed

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c
index 7ab720f..d180aa9 100644 (file)
--- a/drivers/char/moxa.c
+++ b/drivers/char/moxa.c
@@ -154,7 +154,6 @@ struct mon_str {
 #define TXSTOPPED      1
 #define LOWWAIT        2
 #define EMPTYWAIT      3
-#define THROTTLE       4
 
 #define SERIAL_DO_RESTART
 
@@ -194,8 +193,6 @@ static int moxa_write(struct tty_struct *, const unsigned char *, int);
 static int moxa_write_room(struct tty_struct *);
 static void moxa_flush_buffer(struct tty_struct *);
 static int moxa_chars_in_buffer(struct tty_struct *);
-static void moxa_throttle(struct tty_struct *);
-static void moxa_unthrottle(struct tty_struct *);
 static void moxa_set_termios(struct tty_struct *, struct ktermios *);
 static void moxa_stop(struct tty_struct *);
 static void moxa_start(struct tty_struct *);
@@ -415,8 +412,6 @@ static const struct tty_operations moxa_ops = {
        .flush_buffer = moxa_flush_buffer,
        .chars_in_buffer = moxa_chars_in_buffer,
        .ioctl = moxa_ioctl,
-       .throttle = moxa_throttle,
-       .unthrottle = moxa_unthrottle,
        .set_termios = moxa_set_termios,
        .stop = moxa_stop,
        .start = moxa_start,
@@ -1327,20 +1322,6 @@ static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
        return 0;
 }
 
-static void moxa_throttle(struct tty_struct *tty)
-{
-       struct moxa_port *ch = tty->driver_data;
-
-       set_bit(THROTTLE, &ch->statusflags);
-}
-
-static void moxa_unthrottle(struct tty_struct *tty)
-{
-       struct moxa_port *ch = tty->driver_data;
-
-       clear_bit(THROTTLE, &ch->statusflags);
-}
-
 static void moxa_set_termios(struct tty_struct *tty,
                struct ktermios *old_termios)
 {
@@ -1418,7 +1399,7 @@ static int moxa_poll_port(struct moxa_port *p, unsigned int handle,
                        tty_wakeup(tty);
                }
 
-               if (inited && !test_bit(THROTTLE, &p->statusflags) &&
+               if (inited && !test_bit(TTY_THROTTLED, &tty->flags) &&
                                MoxaPortRxQueue(p) > 0) { /* RX */
                        MoxaPortReadData(p);
                        tty_schedule_flip(tty);