27 	struct tty_struct *tty;	/* only populated while dev is open */  member
277 static int vcc_rx_check(struct tty_struct *tty, int size)  in vcc_rx_check()  argument
279 	if (WARN_ON(!tty || !tty->port))  in vcc_rx_check()
285 	if (test_bit(TTY_THROTTLED, &tty->flags) ||  in vcc_rx_check()
286 	    (tty_buffer_request_room(tty->port, VCC_BUFF_LEN) < VCC_BUFF_LEN))  in vcc_rx_check()
292 static int vcc_rx(struct tty_struct *tty, char *buf, int size)  in vcc_rx()  argument
296 	if (WARN_ON(!tty || !tty->port))  in vcc_rx()
299 	len = tty_insert_flip_string(tty->port, buf, size);  in vcc_rx()
301 		tty_flip_buffer_push(tty->port);  in vcc_rx()
309 	struct tty_struct *tty;  in vcc_ldc_read()  local
313 	tty = port->tty;  in vcc_ldc_read()
314 	if (!tty) {  in vcc_ldc_read()
322 		if (!vcc_rx_check(tty, VIO_VCC_MTU_SIZE)) {  in vcc_ldc_read()
341 			vcc_rx(tty, pkt.data, pkt.tag.stype);  in vcc_ldc_read()
371 	if (!port->tty || port->removed)  in vcc_rx_timer()
394 	if (!port->tty || port->removed)  in vcc_tx_timer()
413 		struct tty_struct *tty = port->tty;  in vcc_tx_timer()  local
416 		if (tty)  in vcc_tx_timer()
417 			tty_wakeup(tty);  in vcc_tx_timer()
693 	if (port->tty)  in vcc_remove()
694 		tty_vhangup(port->tty);  in vcc_remove()
707 	if (port->tty) {  in vcc_remove()
734 static int vcc_open(struct tty_struct *tty, struct file *vcc_file)  in vcc_open()  argument
738 	if (tty->count > 1)  in vcc_open()
741 	port = vcc_get_ne(tty->index);  in vcc_open()
756 	if (unlikely(!tty->port)) {  in vcc_open()
761 	if (unlikely(!tty->port->ops)) {  in vcc_open()
766 	return tty_port_open(tty->port, tty, vcc_file);  in vcc_open()
769 static void vcc_close(struct tty_struct *tty, struct file *vcc_file)  in vcc_close()  argument
771 	if (unlikely(tty->count > 1))  in vcc_close()
774 	if (unlikely(!tty->port)) {  in vcc_close()
779 	tty_port_close(tty->port, tty, vcc_file);  in vcc_close()
794 static void vcc_hangup(struct tty_struct *tty)  in vcc_hangup()  argument
798 	port = vcc_get_ne(tty->index);  in vcc_hangup()
804 	if (unlikely(!tty->port)) {  in vcc_hangup()
814 	tty_port_hangup(tty->port);  in vcc_hangup()
817 static ssize_t vcc_write(struct tty_struct *tty, const u8 *buf, size_t count)  in vcc_write()  argument
826 	port = vcc_get_ne(tty->index);  in vcc_write()
882 static unsigned int vcc_write_room(struct tty_struct *tty)  in vcc_write_room()  argument
887 	port = vcc_get_ne(tty->index);  in vcc_write_room()
900 static unsigned int vcc_chars_in_buffer(struct tty_struct *tty)  in vcc_chars_in_buffer()  argument
905 	port = vcc_get_ne(tty->index);  in vcc_chars_in_buffer()
918 static int vcc_break_ctl(struct tty_struct *tty, int state)  in vcc_break_ctl()  argument
923 	port = vcc_get_ne(tty->index);  in vcc_break_ctl()
947 static int vcc_install(struct tty_driver *driver, struct tty_struct *tty)  in vcc_install()  argument
953 	if (tty->index >= VCC_MAX_PORTS)  in vcc_install()
956 	ret = tty_standard_install(driver, tty);  in vcc_install()
964 	port_vcc = vcc_get(tty->index, true);  in vcc_install()
967 		tty->port = NULL;  in vcc_install()
974 	tty->port = port_tty;  in vcc_install()
976 	port_vcc->tty = tty;  in vcc_install()
983 static void vcc_cleanup(struct tty_struct *tty)  in vcc_cleanup()  argument
987 	port = vcc_get(tty->index, true);  in vcc_cleanup()
989 		port->tty = NULL;  in vcc_cleanup()
992 			vcc_table_remove(tty->index);  in vcc_cleanup()
1001 	tty_port_destroy(tty->port);  in vcc_cleanup()
1002 	kfree(tty->port);  in vcc_cleanup()
1003 	tty->port = NULL;  in vcc_cleanup()