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()
694 	if (port->tty)  in vcc_remove()
695 		tty_vhangup(port->tty);  in vcc_remove()
711 	if (port->tty) {  in vcc_remove()
740 static int vcc_open(struct tty_struct *tty, struct file *vcc_file)  in vcc_open()  argument
744 	if (unlikely(!tty)) {  in vcc_open()
749 	if (tty->count > 1)  in vcc_open()
752 	port = vcc_get_ne(tty->index);  in vcc_open()
767 	if (unlikely(!tty->port)) {  in vcc_open()
772 	if (unlikely(!tty->port->ops)) {  in vcc_open()
777 	return tty_port_open(tty->port, tty, vcc_file);  in vcc_open()
780 static void vcc_close(struct tty_struct *tty, struct file *vcc_file)  in vcc_close()  argument
782 	if (unlikely(!tty)) {  in vcc_close()
787 	if (unlikely(tty->count > 1))  in vcc_close()
790 	if (unlikely(!tty->port)) {  in vcc_close()
795 	tty_port_close(tty->port, tty, vcc_file);  in vcc_close()
810 static void vcc_hangup(struct tty_struct *tty)  in vcc_hangup()  argument
814 	if (unlikely(!tty)) {  in vcc_hangup()
819 	port = vcc_get_ne(tty->index);  in vcc_hangup()
825 	if (unlikely(!tty->port)) {  in vcc_hangup()
835 	tty_port_hangup(tty->port);  in vcc_hangup()
838 static int vcc_write(struct tty_struct *tty, const unsigned char *buf,  in vcc_write()  argument
848 	if (unlikely(!tty)) {  in vcc_write()
853 	port = vcc_get_ne(tty->index);  in vcc_write()
908 static int vcc_write_room(struct tty_struct *tty)  in vcc_write_room()  argument
913 	if (unlikely(!tty)) {  in vcc_write_room()
918 	port = vcc_get_ne(tty->index);  in vcc_write_room()
931 static int vcc_chars_in_buffer(struct tty_struct *tty)  in vcc_chars_in_buffer()  argument
936 	if (unlikely(!tty)) {  in vcc_chars_in_buffer()
941 	port = vcc_get_ne(tty->index);  in vcc_chars_in_buffer()
954 static int vcc_break_ctl(struct tty_struct *tty, int state)  in vcc_break_ctl()  argument
959 	if (unlikely(!tty)) {  in vcc_break_ctl()
964 	port = vcc_get_ne(tty->index);  in vcc_break_ctl()
988 static int vcc_install(struct tty_driver *driver, struct tty_struct *tty)  in vcc_install()  argument
994 	if (unlikely(!tty)) {  in vcc_install()
999 	if (tty->index >= VCC_MAX_PORTS)  in vcc_install()
1002 	ret = tty_standard_install(driver, tty);  in vcc_install()
1010 	port_vcc = vcc_get(tty->index, true);  in vcc_install()
1013 		tty->port = NULL;  in vcc_install()
1020 	tty->port = port_tty;  in vcc_install()
1022 	port_vcc->tty = tty;  in vcc_install()
1029 static void vcc_cleanup(struct tty_struct *tty)  in vcc_cleanup()  argument
1033 	if (unlikely(!tty)) {  in vcc_cleanup()
1038 	port = vcc_get(tty->index, true);  in vcc_cleanup()
1040 		port->tty = NULL;  in vcc_cleanup()
1043 			vcc_table_remove(tty->index);  in vcc_cleanup()
1052 	tty_port_destroy(tty->port);  in vcc_cleanup()
1053 	kfree(tty->port);  in vcc_cleanup()
1054 	tty->port = NULL;  in vcc_cleanup()