32 	struct tty_struct *tty;	/* only populated while dev is open */  member
284 static int vcc_rx_check(struct tty_struct *tty, int size)  in vcc_rx_check()  argument
286 	if (WARN_ON(!tty || !tty->port))  in vcc_rx_check()
292 	if (test_bit(TTY_THROTTLED, &tty->flags) ||  in vcc_rx_check()
293 	    (tty_buffer_request_room(tty->port, VCC_BUFF_LEN) < VCC_BUFF_LEN))  in vcc_rx_check()
299 static int vcc_rx(struct tty_struct *tty, char *buf, int size)  in vcc_rx()  argument
303 	if (WARN_ON(!tty || !tty->port))  in vcc_rx()
306 	len = tty_insert_flip_string(tty->port, buf, size);  in vcc_rx()
308 		tty_flip_buffer_push(tty->port);  in vcc_rx()
316 	struct tty_struct *tty;  in vcc_ldc_read()  local
320 	tty = port->tty;  in vcc_ldc_read()
321 	if (!tty) {  in vcc_ldc_read()
329 		if (!vcc_rx_check(tty, VIO_VCC_MTU_SIZE)) {  in vcc_ldc_read()
348 			vcc_rx(tty, pkt.data, pkt.tag.stype);  in vcc_ldc_read()
378 	if (!port->tty || port->removed)  in vcc_rx_timer()
401 	if (!port->tty || port->removed)  in vcc_tx_timer()
420 		struct tty_struct *tty = port->tty;  in vcc_tx_timer()  local
423 		if (tty)  in vcc_tx_timer()
424 			tty_wakeup(tty);  in vcc_tx_timer()
692 	if (port->tty)  in vcc_remove()
693 		tty_vhangup(port->tty);  in vcc_remove()
709 	if (port->tty) {  in vcc_remove()
738 static int vcc_open(struct tty_struct *tty, struct file *vcc_file)  in vcc_open()  argument
742 	if (unlikely(!tty)) {  in vcc_open()
747 	if (tty->count > 1)  in vcc_open()
750 	port = vcc_get_ne(tty->index);  in vcc_open()
765 	if (unlikely(!tty->port)) {  in vcc_open()
770 	if (unlikely(!tty->port->ops)) {  in vcc_open()
775 	return tty_port_open(tty->port, tty, vcc_file);  in vcc_open()
778 static void vcc_close(struct tty_struct *tty, struct file *vcc_file)  in vcc_close()  argument
780 	if (unlikely(!tty)) {  in vcc_close()
785 	if (unlikely(tty->count > 1))  in vcc_close()
788 	if (unlikely(!tty->port)) {  in vcc_close()
793 	tty_port_close(tty->port, tty, vcc_file);  in vcc_close()
808 static void vcc_hangup(struct tty_struct *tty)  in vcc_hangup()  argument
812 	if (unlikely(!tty)) {  in vcc_hangup()
817 	port = vcc_get_ne(tty->index);  in vcc_hangup()
823 	if (unlikely(!tty->port)) {  in vcc_hangup()
833 	tty_port_hangup(tty->port);  in vcc_hangup()
836 static int vcc_write(struct tty_struct *tty, const unsigned char *buf,  in vcc_write()  argument
846 	if (unlikely(!tty)) {  in vcc_write()
851 	port = vcc_get_ne(tty->index);  in vcc_write()
906 static int vcc_write_room(struct tty_struct *tty)  in vcc_write_room()  argument
911 	if (unlikely(!tty)) {  in vcc_write_room()
916 	port = vcc_get_ne(tty->index);  in vcc_write_room()
929 static int vcc_chars_in_buffer(struct tty_struct *tty)  in vcc_chars_in_buffer()  argument
934 	if (unlikely(!tty)) {  in vcc_chars_in_buffer()
939 	port = vcc_get_ne(tty->index);  in vcc_chars_in_buffer()
952 static int vcc_break_ctl(struct tty_struct *tty, int state)  in vcc_break_ctl()  argument
957 	if (unlikely(!tty)) {  in vcc_break_ctl()
962 	port = vcc_get_ne(tty->index);  in vcc_break_ctl()
986 static int vcc_install(struct tty_driver *driver, struct tty_struct *tty)  in vcc_install()  argument
992 	if (unlikely(!tty)) {  in vcc_install()
997 	if (tty->index >= VCC_MAX_PORTS)  in vcc_install()
1000 	ret = tty_standard_install(driver, tty);  in vcc_install()
1008 	port_vcc = vcc_get(tty->index, true);  in vcc_install()
1011 		tty->port = NULL;  in vcc_install()
1018 	tty->port = port_tty;  in vcc_install()
1020 	port_vcc->tty = tty;  in vcc_install()
1027 static void vcc_cleanup(struct tty_struct *tty)  in vcc_cleanup()  argument
1031 	if (unlikely(!tty)) {  in vcc_cleanup()
1036 	port = vcc_get(tty->index, true);  in vcc_cleanup()
1038 		port->tty = NULL;  in vcc_cleanup()
1041 			vcc_table_remove(tty->index);  in vcc_cleanup()
1050 	tty_port_destroy(tty->port);  in vcc_cleanup()
1051 	kfree(tty->port);  in vcc_cleanup()
1052 	tty->port = NULL;  in vcc_cleanup()