67 	struct tty_struct *tty;  in st_get_uart_wr_room()  local
68 	if (unlikely(st_gdata == NULL || st_gdata->tty == NULL)) {  in st_get_uart_wr_room()
72 	tty = st_gdata->tty;  in st_get_uart_wr_room()
73 	return tty->ops->write_room(tty);  in st_get_uart_wr_room()
86 	struct tty_struct *tty;  in st_int_write()  local
87 	if (unlikely(st_gdata == NULL || st_gdata->tty == NULL)) {  in st_int_write()
91 	tty = st_gdata->tty;  in st_int_write()
96 	return tty->ops->write(tty, data, count);  in st_int_write()
492 			set_bit(TTY_DO_WRITE_WAKEUP, &st_data->tty->flags);  in st_tx_wakeup()
675 		if (st_gdata->tty) {  in st_unregister()
676 			tty_ldisc_flush(st_gdata->tty);  in st_unregister()
677 			stop_tty(st_gdata->tty);  in st_unregister()
699 		|| st_gdata->tty == NULL)) {  in st_write()
723 static int st_tty_open(struct tty_struct *tty)  in st_tty_open()  argument
730 	st_gdata->tty = tty;  in st_tty_open()
731 	tty->disc_data = st_gdata;  in st_tty_open()
734 	clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);  in st_tty_open()
738 	tty->receive_room = 65536;  in st_tty_open()
740 	tty_ldisc_flush(tty);  in st_tty_open()
741 	tty_driver_flush_buffer(tty);  in st_tty_open()
751 static void st_tty_close(struct tty_struct *tty)  in st_tty_close()  argument
755 	struct	st_data_s *st_gdata = tty->disc_data;  in st_tty_close()
777 	st_gdata->tty = NULL;  in st_tty_close()
779 	tty_ldisc_flush(tty);  in st_tty_close()
780 	tty_driver_flush_buffer(tty);  in st_tty_close()
796 static void st_tty_receive(struct tty_struct *tty, const unsigned char *data,  in st_tty_receive()  argument
808 	st_recv(tty->disc_data, data, count);  in st_tty_receive()
815 static void st_tty_wakeup(struct tty_struct *tty)  in st_tty_wakeup()  argument
817 	struct	st_data_s *st_gdata = tty->disc_data;  in st_tty_wakeup()
820 	clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);  in st_tty_wakeup()
830 static void st_tty_flush_buffer(struct tty_struct *tty)  in st_tty_flush_buffer()  argument
832 	struct	st_data_s *st_gdata = tty->disc_data;  in st_tty_flush_buffer()
838 	tty_driver_flush_buffer(tty);  in st_tty_flush_buffer()