822 static int tiocmget(struct tty_struct *tty);
823 static int tiocmset(struct tty_struct *tty,
910 static void mgsl_wait_until_sent(struct tty_struct *tty, int timeout);
956 static void ldisc_receive_buf(struct tty_struct *tty,  in ldisc_receive_buf()  argument
960 	if (!tty)  in ldisc_receive_buf()
962 	ld = tty_ldisc_ref(tty);  in ldisc_receive_buf()
965 			ld->ops->receive_buf(tty, data, flags, count);  in ldisc_receive_buf()
975 static void mgsl_stop(struct tty_struct *tty)  in mgsl_stop()  argument
977 	struct mgsl_struct *info = tty->driver_data;  in mgsl_stop()
980 	if (mgsl_paranoia_check(info, tty->name, "mgsl_stop"))  in mgsl_stop()
998 static void mgsl_start(struct tty_struct *tty)  in mgsl_start()  argument
1000 	struct mgsl_struct *info = tty->driver_data;  in mgsl_start()
1003 	if (mgsl_paranoia_check(info, tty->name, "mgsl_start"))  in mgsl_start()
1120 	struct tty_struct *tty = info->port.tty;  in mgsl_bh_transmit()  local
1127 	if (tty)  in mgsl_bh_transmit()
1128 		tty_wakeup(tty);  in mgsl_bh_transmit()
1262 		if (info->port.tty->stopped || info->port.tty->hw_stopped) {  in mgsl_isr_transmit_status()
1353 				if (info->port.tty)  in mgsl_isr_io_pin()
1354 					tty_hangup(info->port.tty);  in mgsl_isr_io_pin()
1360 			if (info->port.tty->hw_stopped) {  in mgsl_isr_io_pin()
1364 					if (info->port.tty)  in mgsl_isr_io_pin()
1365 						info->port.tty->hw_stopped = 0;  in mgsl_isr_io_pin()
1374 					if (info->port.tty)  in mgsl_isr_io_pin()
1375 						info->port.tty->hw_stopped = 1;  in mgsl_isr_io_pin()
1409 	if (info->port.tty->stopped || info->port.tty->hw_stopped) {  in mgsl_isr_transmit_data()
1500 					do_SAK(info->port.tty);  in mgsl_isr_receive_data()
1783   		if (capable(CAP_SYS_ADMIN) && info->port.tty)  in startup()
1784 			set_bit(TTY_IO_ERROR, &info->port.tty->flags);  in startup()
1792 	if (info->port.tty)  in startup()
1793 		clear_bit(TTY_IO_ERROR, &info->port.tty->flags);  in startup()
1849 	if (!info->port.tty || info->port.tty->termios.c_cflag & HUPCL) {  in shutdown()
1858 	if (info->port.tty)  in shutdown()
1859 		set_bit(TTY_IO_ERROR, &info->port.tty->flags);  in shutdown()
1893 	if (info->netcount || info->port.tty->termios.c_cflag & CREAD)  in mgsl_program_hw()
1906 	if (!info->port.tty)  in mgsl_change_params()
1913 	cflag = info->port.tty->termios.c_cflag;  in mgsl_change_params()
1961 		info->params.data_rate = tty_get_baud_rate(info->port.tty);  in mgsl_change_params()
1982 	if (I_INPCK(info->port.tty))  in mgsl_change_params()
1984  	if (I_BRKINT(info->port.tty) || I_PARMRK(info->port.tty))  in mgsl_change_params()
1987 	if (I_IGNPAR(info->port.tty))  in mgsl_change_params()
1989 	if (I_IGNBRK(info->port.tty)) {  in mgsl_change_params()
1994 		if (I_IGNPAR(info->port.tty))  in mgsl_change_params()
2011 static int mgsl_put_char(struct tty_struct *tty, unsigned char ch)  in mgsl_put_char()  argument
2013 	struct mgsl_struct *info = tty->driver_data;  in mgsl_put_char()
2022 	if (mgsl_paranoia_check(info, tty->name, "mgsl_put_char"))  in mgsl_put_char()
2051 static void mgsl_flush_chars(struct tty_struct *tty)  in mgsl_flush_chars()  argument
2053 	struct mgsl_struct *info = tty->driver_data;  in mgsl_flush_chars()
2060 	if (mgsl_paranoia_check(info, tty->name, "mgsl_flush_chars"))  in mgsl_flush_chars()
2063 	if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||  in mgsl_flush_chars()
2101 static int mgsl_write(struct tty_struct * tty,  in mgsl_write()  argument
2105 	struct mgsl_struct *info = tty->driver_data;  in mgsl_write()
2112 	if (mgsl_paranoia_check(info, tty->name, "mgsl_write"))  in mgsl_write()
2203  	if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) {  in mgsl_write()
2225 static int mgsl_write_room(struct tty_struct *tty)  in mgsl_write_room()  argument
2227 	struct mgsl_struct *info = tty->driver_data;  in mgsl_write_room()
2230 	if (mgsl_paranoia_check(info, tty->name, "mgsl_write_room"))  in mgsl_write_room()
2260 static int mgsl_chars_in_buffer(struct tty_struct *tty)  in mgsl_chars_in_buffer()  argument
2262 	struct mgsl_struct *info = tty->driver_data;  in mgsl_chars_in_buffer()
2268 	if (mgsl_paranoia_check(info, tty->name, "mgsl_chars_in_buffer"))  in mgsl_chars_in_buffer()
2294 static void mgsl_flush_buffer(struct tty_struct *tty)  in mgsl_flush_buffer()  argument
2296 	struct mgsl_struct *info = tty->driver_data;  in mgsl_flush_buffer()
2303 	if (mgsl_paranoia_check(info, tty->name, "mgsl_flush_buffer"))  in mgsl_flush_buffer()
2311 	tty_wakeup(tty);  in mgsl_flush_buffer()
2322 static void mgsl_send_xchar(struct tty_struct *tty, char ch)  in mgsl_send_xchar()  argument
2324 	struct mgsl_struct *info = tty->driver_data;  in mgsl_send_xchar()
2331 	if (mgsl_paranoia_check(info, tty->name, "mgsl_send_xchar"))  in mgsl_send_xchar()
2351 static void mgsl_throttle(struct tty_struct * tty)  in mgsl_throttle()  argument
2353 	struct mgsl_struct *info = tty->driver_data;  in mgsl_throttle()
2360 	if (mgsl_paranoia_check(info, tty->name, "mgsl_throttle"))  in mgsl_throttle()
2363 	if (I_IXOFF(tty))  in mgsl_throttle()
2364 		mgsl_send_xchar(tty, STOP_CHAR(tty));  in mgsl_throttle()
2366 	if (tty->termios.c_cflag & CRTSCTS) {  in mgsl_throttle()
2381 static void mgsl_unthrottle(struct tty_struct * tty)  in mgsl_unthrottle()  argument
2383 	struct mgsl_struct *info = tty->driver_data;  in mgsl_unthrottle()
2390 	if (mgsl_paranoia_check(info, tty->name, "mgsl_unthrottle"))  in mgsl_unthrottle()
2393 	if (I_IXOFF(tty)) {  in mgsl_unthrottle()
2397 			mgsl_send_xchar(tty, START_CHAR(tty));  in mgsl_unthrottle()
2400 	if (tty->termios.c_cflag & CRTSCTS) {  in mgsl_unthrottle()
2840 static int tiocmget(struct tty_struct *tty)  in tiocmget()  argument
2842 	struct mgsl_struct *info = tty->driver_data;  in tiocmget()
2865 static int tiocmset(struct tty_struct *tty,  in tiocmset()  argument
2868 	struct mgsl_struct *info = tty->driver_data;  in tiocmset()
2897 static int mgsl_break(struct tty_struct *tty, int break_state)  in mgsl_break()  argument
2899 	struct mgsl_struct * info = tty->driver_data;  in mgsl_break()
2906 	if (mgsl_paranoia_check(info, tty->name, "mgsl_break"))  in mgsl_break()
2925 static int msgl_get_icount(struct tty_struct *tty,  in msgl_get_icount()  argument
2929 	struct mgsl_struct * info = tty->driver_data;  in msgl_get_icount()
2961 static int mgsl_ioctl(struct tty_struct *tty,  in mgsl_ioctl()  argument
2964 	struct mgsl_struct * info = tty->driver_data;  in mgsl_ioctl()
2970 	if (mgsl_paranoia_check(info, tty->name, "mgsl_ioctl"))  in mgsl_ioctl()
2975 		if (tty->flags & (1 << TTY_IO_ERROR))  in mgsl_ioctl()
3030 static void mgsl_set_termios(struct tty_struct *tty, struct ktermios *old_termios)  in mgsl_set_termios()  argument
3032 	struct mgsl_struct *info = tty->driver_data;  in mgsl_set_termios()
3037 			tty->driver->name );  in mgsl_set_termios()
3043 	    !(tty->termios.c_cflag & CBAUD)) {  in mgsl_set_termios()
3052 	    tty->termios.c_cflag & CBAUD) {  in mgsl_set_termios()
3054  		if (!(tty->termios.c_cflag & CRTSCTS) ||   in mgsl_set_termios()
3055  		    !test_bit(TTY_THROTTLED, &tty->flags)) {  in mgsl_set_termios()
3065 	    !(tty->termios.c_cflag & CRTSCTS)) {  in mgsl_set_termios()
3066 		tty->hw_stopped = 0;  in mgsl_set_termios()
3067 		mgsl_start(tty);  in mgsl_set_termios()
3084 static void mgsl_close(struct tty_struct *tty, struct file * filp)  in mgsl_close()  argument
3086 	struct mgsl_struct * info = tty->driver_data;  in mgsl_close()
3088 	if (mgsl_paranoia_check(info, tty->name, "mgsl_close"))  in mgsl_close()
3095 	if (tty_port_close_start(&info->port, tty, filp) == 0)  in mgsl_close()
3100  		mgsl_wait_until_sent(tty, info->timeout);  in mgsl_close()
3101 	mgsl_flush_buffer(tty);  in mgsl_close()
3102 	tty_ldisc_flush(tty);  in mgsl_close()
3106 	tty_port_close_end(&info->port, tty);	  in mgsl_close()
3107 	info->port.tty = NULL;  in mgsl_close()
3111 			tty->driver->name, info->port.count);  in mgsl_close()
3126 static void mgsl_wait_until_sent(struct tty_struct *tty, int timeout)  in mgsl_wait_until_sent()  argument
3128 	struct mgsl_struct * info = tty->driver_data;  in mgsl_wait_until_sent()
3138 	if (mgsl_paranoia_check(info, tty->name, "mgsl_wait_until_sent"))  in mgsl_wait_until_sent()
3197 static void mgsl_hangup(struct tty_struct *tty)  in mgsl_hangup()  argument
3199 	struct mgsl_struct * info = tty->driver_data;  in mgsl_hangup()
3205 	if (mgsl_paranoia_check(info, tty->name, "mgsl_hangup"))  in mgsl_hangup()
3208 	mgsl_flush_buffer(tty);  in mgsl_hangup()
3213 	info->port.tty = NULL;  in mgsl_hangup()
3264 static int block_til_ready(struct tty_struct *tty, struct file * filp,  in block_til_ready()  argument
3276 			 __FILE__,__LINE__, tty->driver->name );  in block_til_ready()
3278 	if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){  in block_til_ready()
3284 	if (tty->termios.c_cflag & CLOCAL)  in block_til_ready()
3299 			 __FILE__,__LINE__, tty->driver->name, port->count );  in block_til_ready()
3307 		if (C_BAUD(tty) && test_bit(ASYNCB_INITIALIZED, &port->flags))  in block_til_ready()
3330 				 __FILE__,__LINE__, tty->driver->name, port->count );  in block_til_ready()
3332 		tty_unlock(tty);  in block_til_ready()
3334 		tty_lock(tty);  in block_til_ready()
3347 			 __FILE__,__LINE__, tty->driver->name, port->count );  in block_til_ready()
3356 static int mgsl_install(struct tty_driver *driver, struct tty_struct *tty)  in mgsl_install()  argument
3359 	int line = tty->index;  in mgsl_install()
3372 	if (mgsl_paranoia_check(info, tty->name, "mgsl_open"))  in mgsl_install()
3374 	tty->driver_data = info;  in mgsl_install()
3376 	return tty_port_install(&info->port, driver, tty);  in mgsl_install()
3389 static int mgsl_open(struct tty_struct *tty, struct file * filp)  in mgsl_open()  argument
3391 	struct mgsl_struct *info = tty->driver_data;  in mgsl_open()
3395 	info->port.tty = tty;  in mgsl_open()
3399 			 __FILE__,__LINE__,tty->driver->name, info->port.count);  in mgsl_open()
3403 		wait_event_interruptible_tty(tty, info->port.close_wait,  in mgsl_open()
3428 	retval = block_til_ready(tty, filp, info);  in mgsl_open()
3443 		if (tty->count == 1)  in mgsl_open()
3444 			info->port.tty = NULL; /* tty layer will release tty struct */  in mgsl_open()
6529 	struct tty_struct *tty = info->port.tty;  in mgsl_get_rx_frame()  local
6672 				ldisc_receive_buf(tty, info->intermediate_rxbuffer, info->flag_buf, framesize);  in mgsl_get_rx_frame()
6727 	struct tty_struct *tty = info->port.tty;  in mgsl_get_raw_rx_frame()  local
6844 			ldisc_receive_buf(tty, info->intermediate_rxbuffer, info->flag_buf, framesize);  in mgsl_get_raw_rx_frame()