195 	struct tty_struct *tty;		/* The tty our ldisc is bound to */  member
1027 static void gsm_process_modem(struct tty_struct *tty, struct gsm_dlci *dlci,  in gsm_process_modem()  argument
1067 	if (tty) {  in gsm_process_modem()
1069 			if (!(tty->termios.c_cflag & CLOCAL))  in gsm_process_modem()
1070 				tty_hangup(tty);  in gsm_process_modem()
1097 	struct tty_struct *tty;  in gsm_control_modem()  local
1130 	tty = tty_port_tty_get(&dlci->port);  in gsm_control_modem()
1131 	gsm_process_modem(tty, dlci, modem, clen);  in gsm_control_modem()
1132 	if (tty) {  in gsm_control_modem()
1133 		tty_wakeup(tty);  in gsm_control_modem()
1134 		tty_kref_put(tty);  in gsm_control_modem()
1555 	struct tty_struct *tty;  in gsm_dlci_data()  local
1576 		tty = tty_port_tty_get(port);  in gsm_dlci_data()
1577 		if (tty) {  in gsm_dlci_data()
1578 			gsm_process_modem(tty, dlci, modem, clen);  in gsm_dlci_data()
1579 			tty_kref_put(tty);  in gsm_dlci_data()
1713 	struct tty_struct *tty = tty_port_tty_get(&dlci->port);  in gsm_dlci_release()  local
1714 	if (tty) {  in gsm_dlci_release()
1719 		tty_vhangup(tty);  in gsm_dlci_release()
1722 		tty_kref_put(tty);  in gsm_dlci_release()
2210 	if (tty_write_room(gsm->tty) < len) {  in gsmld_output()
2211 		set_bit(TTY_DO_WRITE_WAKEUP, &gsm->tty->flags);  in gsmld_output()
2217 	gsm->tty->ops->write(gsm->tty, data, len);  in gsmld_output()
2231 static int gsmld_attach_gsm(struct tty_struct *tty, struct gsm_mux *gsm)  in gsmld_attach_gsm()  argument
2235 	gsm->tty = tty_kref_get(tty);  in gsmld_attach_gsm()
2239 		tty_kref_put(gsm->tty);  in gsmld_attach_gsm()
2259 static void gsmld_detach_gsm(struct tty_struct *tty, struct gsm_mux *gsm)  in gsmld_detach_gsm()  argument
2264 	WARN_ON(tty != gsm->tty);  in gsmld_detach_gsm()
2268 	tty_kref_put(gsm->tty);  in gsmld_detach_gsm()
2269 	gsm->tty = NULL;  in gsmld_detach_gsm()
2272 static void gsmld_receive_buf(struct tty_struct *tty, const unsigned char *cp,  in gsmld_receive_buf()  argument
2275 	struct gsm_mux *gsm = tty->disc_data;  in gsmld_receive_buf()
2300 			       tty_name(tty), flags);  in gsmld_receive_buf()
2318 static ssize_t gsmld_chars_in_buffer(struct tty_struct *tty)  in gsmld_chars_in_buffer()  argument
2332 static void gsmld_flush_buffer(struct tty_struct *tty)  in gsmld_flush_buffer()  argument
2346 static void gsmld_close(struct tty_struct *tty)  in gsmld_close()  argument
2348 	struct gsm_mux *gsm = tty->disc_data;  in gsmld_close()
2350 	gsmld_detach_gsm(tty, gsm);  in gsmld_close()
2352 	gsmld_flush_buffer(tty);  in gsmld_close()
2367 static int gsmld_open(struct tty_struct *tty)  in gsmld_open()  argument
2372 	if (tty->ops->write == NULL)  in gsmld_open()
2380 	tty->disc_data = gsm;  in gsmld_open()
2381 	tty->receive_room = 65536;  in gsmld_open()
2386 	ret = gsmld_attach_gsm(tty, gsm);  in gsmld_open()
2403 static void gsmld_write_wakeup(struct tty_struct *tty)  in gsmld_write_wakeup()  argument
2405 	struct gsm_mux *gsm = tty->disc_data;  in gsmld_write_wakeup()
2409 	clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);  in gsmld_write_wakeup()
2433 static ssize_t gsmld_read(struct tty_struct *tty, struct file *file,  in gsmld_read()  argument
2453 static ssize_t gsmld_write(struct tty_struct *tty, struct file *file,  in gsmld_write()  argument
2456 	int space = tty_write_room(tty);  in gsmld_write()
2458 		return tty->ops->write(tty, buf, nr);  in gsmld_write()
2459 	set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);  in gsmld_write()
2477 static unsigned int gsmld_poll(struct tty_struct *tty, struct file *file,  in gsmld_poll()  argument
2481 	struct gsm_mux *gsm = tty->disc_data;  in gsmld_poll()
2483 	poll_wait(file, &tty->read_wait, wait);  in gsmld_poll()
2484 	poll_wait(file, &tty->write_wait, wait);  in gsmld_poll()
2487 	if (!tty_is_writelocked(tty) && tty_write_room(tty) > 0)  in gsmld_poll()
2494 static int gsmld_config(struct tty_struct *tty, struct gsm_mux *gsm,  in gsmld_config()  argument
2577 static int gsmld_ioctl(struct tty_struct *tty, struct file *file,  in gsmld_ioctl()  argument
2581 	struct gsm_mux *gsm = tty->disc_data;  in gsmld_ioctl()
2607 		return gsmld_config(tty, gsm, &c);  in gsmld_ioctl()
2609 		return n_tty_ioctl_helper(tty, file, cmd, arg);  in gsmld_ioctl()
2901 static int gsmtty_install(struct tty_driver *driver, struct tty_struct *tty)  in gsmtty_install()  argument
2905 	unsigned int line = tty->index;  in gsmtty_install()
2940 	ret = tty_port_install(&dlci->port, driver, tty);  in gsmtty_install()
2951 	tty->driver_data = dlci;  in gsmtty_install()
2957 static int gsmtty_open(struct tty_struct *tty, struct file *filp)  in gsmtty_open()  argument
2959 	struct gsm_dlci *dlci = tty->driver_data;  in gsmtty_open()
2963 	tty_port_tty_set(port, tty);  in gsmtty_open()
2972 	return tty_port_block_til_ready(port, tty, filp);  in gsmtty_open()
2975 static void gsmtty_close(struct tty_struct *tty, struct file *filp)  in gsmtty_close()  argument
2977 	struct gsm_dlci *dlci = tty->driver_data;  in gsmtty_close()
2988 	if (tty_port_close_start(&dlci->port, tty, filp) == 0)  in gsmtty_close()
2992 		if (C_HUPCL(tty))  in gsmtty_close()
2995 	tty_port_close_end(&dlci->port, tty);  in gsmtty_close()
3000 static void gsmtty_hangup(struct tty_struct *tty)  in gsmtty_hangup()  argument
3002 	struct gsm_dlci *dlci = tty->driver_data;  in gsmtty_hangup()
3009 static int gsmtty_write(struct tty_struct *tty, const unsigned char *buf,  in gsmtty_write()  argument
3013 	struct gsm_dlci *dlci = tty->driver_data;  in gsmtty_write()
3023 static int gsmtty_write_room(struct tty_struct *tty)  in gsmtty_write_room()  argument
3025 	struct gsm_dlci *dlci = tty->driver_data;  in gsmtty_write_room()
3031 static int gsmtty_chars_in_buffer(struct tty_struct *tty)  in gsmtty_chars_in_buffer()  argument
3033 	struct gsm_dlci *dlci = tty->driver_data;  in gsmtty_chars_in_buffer()
3039 static void gsmtty_flush_buffer(struct tty_struct *tty)  in gsmtty_flush_buffer()  argument
3041 	struct gsm_dlci *dlci = tty->driver_data;  in gsmtty_flush_buffer()
3052 static void gsmtty_wait_until_sent(struct tty_struct *tty, int timeout)  in gsmtty_wait_until_sent()  argument
3059 static int gsmtty_tiocmget(struct tty_struct *tty)  in gsmtty_tiocmget()  argument
3061 	struct gsm_dlci *dlci = tty->driver_data;  in gsmtty_tiocmget()
3067 static int gsmtty_tiocmset(struct tty_struct *tty,  in gsmtty_tiocmset()  argument
3070 	struct gsm_dlci *dlci = tty->driver_data;  in gsmtty_tiocmset()
3086 static int gsmtty_ioctl(struct tty_struct *tty,  in gsmtty_ioctl()  argument
3089 	struct gsm_dlci *dlci = tty->driver_data;  in gsmtty_ioctl()
3119 static void gsmtty_set_termios(struct tty_struct *tty, struct ktermios *old)  in gsmtty_set_termios()  argument
3121 	struct gsm_dlci *dlci = tty->driver_data;  in gsmtty_set_termios()
3129 	tty_termios_copy_hw(&tty->termios, old);  in gsmtty_set_termios()
3132 static void gsmtty_throttle(struct tty_struct *tty)  in gsmtty_throttle()  argument
3134 	struct gsm_dlci *dlci = tty->driver_data;  in gsmtty_throttle()
3137 	if (tty->termios.c_cflag & CRTSCTS)  in gsmtty_throttle()
3144 static void gsmtty_unthrottle(struct tty_struct *tty)  in gsmtty_unthrottle()  argument
3146 	struct gsm_dlci *dlci = tty->driver_data;  in gsmtty_unthrottle()
3149 	if (tty->termios.c_cflag & CRTSCTS)  in gsmtty_unthrottle()
3156 static int gsmtty_break_ctl(struct tty_struct *tty, int state)  in gsmtty_break_ctl()  argument
3158 	struct gsm_dlci *dlci = tty->driver_data;  in gsmtty_break_ctl()
3174 static void gsmtty_cleanup(struct tty_struct *tty)  in gsmtty_cleanup()  argument
3176 	struct gsm_dlci *dlci = tty->driver_data;  in gsmtty_cleanup()