33 	struct tty_struct *tty;	/* only populated while dev is open */  member
285 static int vcc_rx_check(struct tty_struct *tty, int size)  in vcc_rx_check()  argument
287 	if (WARN_ON(!tty || !tty->port))  in vcc_rx_check()
293 	if (test_bit(TTY_THROTTLED, &tty->flags) ||  in vcc_rx_check()
294 	    (tty_buffer_request_room(tty->port, VCC_BUFF_LEN) < VCC_BUFF_LEN))  in vcc_rx_check()
300 static int vcc_rx(struct tty_struct *tty, char *buf, int size)  in vcc_rx()  argument
304 	if (WARN_ON(!tty || !tty->port))  in vcc_rx()
307 	len = tty_insert_flip_string(tty->port, buf, size);  in vcc_rx()
309 		tty_flip_buffer_push(tty->port);  in vcc_rx()
317 	struct tty_struct *tty;  in vcc_ldc_read()  local
321 	tty = port->tty;  in vcc_ldc_read()
322 	if (!tty) {  in vcc_ldc_read()
330 		if (!vcc_rx_check(tty, VIO_VCC_MTU_SIZE)) {  in vcc_ldc_read()
349 			vcc_rx(tty, pkt.data, pkt.tag.stype);  in vcc_ldc_read()
379 	if (!port->tty || port->removed)  in vcc_rx_timer()
402 	if (!port->tty || port->removed)  in vcc_tx_timer()
421 		struct tty_struct *tty = port->tty;  in vcc_tx_timer()  local
424 		if (tty)  in vcc_tx_timer()
425 			tty_wakeup(tty);  in vcc_tx_timer()
693 	if (port->tty)  in vcc_remove()
694 		tty_vhangup(port->tty);  in vcc_remove()
710 	if (port->tty) {  in vcc_remove()
739 static int vcc_open(struct tty_struct *tty, struct file *vcc_file)  in vcc_open()  argument
743 	if (unlikely(!tty)) {  in vcc_open()
748 	if (tty->count > 1)  in vcc_open()
751 	port = vcc_get_ne(tty->index);  in vcc_open()
766 	if (unlikely(!tty->port)) {  in vcc_open()
771 	if (unlikely(!tty->port->ops)) {  in vcc_open()
776 	return tty_port_open(tty->port, tty, vcc_file);  in vcc_open()
779 static void vcc_close(struct tty_struct *tty, struct file *vcc_file)  in vcc_close()  argument
781 	if (unlikely(!tty)) {  in vcc_close()
786 	if (unlikely(tty->count > 1))  in vcc_close()
789 	if (unlikely(!tty->port)) {  in vcc_close()
794 	tty_port_close(tty->port, tty, vcc_file);  in vcc_close()
809 static void vcc_hangup(struct tty_struct *tty)  in vcc_hangup()  argument
813 	if (unlikely(!tty)) {  in vcc_hangup()
818 	port = vcc_get_ne(tty->index);  in vcc_hangup()
824 	if (unlikely(!tty->port)) {  in vcc_hangup()
834 	tty_port_hangup(tty->port);  in vcc_hangup()
837 static int vcc_write(struct tty_struct *tty, const unsigned char *buf,  in vcc_write()  argument
847 	if (unlikely(!tty)) {  in vcc_write()
852 	port = vcc_get_ne(tty->index);  in vcc_write()
907 static int vcc_write_room(struct tty_struct *tty)  in vcc_write_room()  argument
912 	if (unlikely(!tty)) {  in vcc_write_room()
917 	port = vcc_get_ne(tty->index);  in vcc_write_room()
930 static int vcc_chars_in_buffer(struct tty_struct *tty)  in vcc_chars_in_buffer()  argument
935 	if (unlikely(!tty)) {  in vcc_chars_in_buffer()
940 	port = vcc_get_ne(tty->index);  in vcc_chars_in_buffer()
953 static int vcc_break_ctl(struct tty_struct *tty, int state)  in vcc_break_ctl()  argument
958 	if (unlikely(!tty)) {  in vcc_break_ctl()
963 	port = vcc_get_ne(tty->index);  in vcc_break_ctl()
987 static int vcc_install(struct tty_driver *driver, struct tty_struct *tty)  in vcc_install()  argument
993 	if (unlikely(!tty)) {  in vcc_install()
998 	if (tty->index >= VCC_MAX_PORTS)  in vcc_install()
1001 	ret = tty_standard_install(driver, tty);  in vcc_install()
1009 	port_vcc = vcc_get(tty->index, true);  in vcc_install()
1012 		tty->port = NULL;  in vcc_install()
1019 	tty->port = port_tty;  in vcc_install()
1021 	port_vcc->tty = tty;  in vcc_install()
1028 static void vcc_cleanup(struct tty_struct *tty)  in vcc_cleanup()  argument
1032 	if (unlikely(!tty)) {  in vcc_cleanup()
1037 	port = vcc_get(tty->index, true);  in vcc_cleanup()
1039 		port->tty = NULL;  in vcc_cleanup()
1042 			vcc_table_remove(tty->index);  in vcc_cleanup()
1051 	tty_port_destroy(tty->port);  in vcc_cleanup()
1052 	kfree(tty->port);  in vcc_cleanup()
1053 	tty->port = NULL;  in vcc_cleanup()