50 static int uart_dcd_enabled(struct uart_port *uport)  in uart_dcd_enabled()  argument
52 	return !!(uport->status & UPSTAT_DCD_ENABLE);  in uart_dcd_enabled()
62 static inline void uart_port_deref(struct uart_port *uport)  in uart_port_deref()  argument
64 	if (atomic_dec_and_test(&uport->state->refcount))  in uart_port_deref()
65 		wake_up(&uport->state->remove_wait);  in uart_port_deref()
76 #define uart_port_unlock(uport, flags)					\  argument
78 		struct uart_port *__uport = uport;			\
155 static void uart_port_dtr_rts(struct uart_port *uport, int raise)  in uart_port_dtr_rts()  argument
157 	int rs485_on = uport->rs485_config &&  in uart_port_dtr_rts()
158 		(uport->rs485.flags & SER_RS485_ENABLED);  in uart_port_dtr_rts()
159 	int RTS_after_send = !!(uport->rs485.flags & SER_RS485_RTS_AFTER_SEND);  in uart_port_dtr_rts()
163 			uart_set_mctrl(uport, TIOCM_DTR);  in uart_port_dtr_rts()
164 			uart_clear_mctrl(uport, TIOCM_RTS);  in uart_port_dtr_rts()
166 			uart_set_mctrl(uport, TIOCM_DTR | TIOCM_RTS);  in uart_port_dtr_rts()
172 		uart_clear_mctrl(uport, clear);  in uart_port_dtr_rts()
183 	struct uart_port *uport = uart_port_check(state);  in uart_port_startup()  local
188 	if (uport->type == PORT_UNKNOWN)  in uart_port_startup()
211 	uart_port_unlock(uport, flags);  in uart_port_startup()
213 	retval = uport->ops->startup(uport);  in uart_port_startup()
215 		if (uart_console(uport) && uport->cons->cflag) {  in uart_port_startup()
216 			tty->termios.c_cflag = uport->cons->cflag;  in uart_port_startup()
217 			uport->cons->cflag = 0;  in uart_port_startup()
229 			uart_port_dtr_rts(uport, 1);  in uart_port_startup()
268 	struct uart_port *uport = uart_port_check(state);  in uart_shutdown()  local
284 		if (uport && uart_console(uport) && tty)  in uart_shutdown()
285 			uport->cons->cflag = tty->termios.c_cflag;  in uart_shutdown()
288 			uart_port_dtr_rts(uport, 0);  in uart_shutdown()
308 	uart_port_unlock(uport, flags);  in uart_shutdown()
492 	struct uart_port *uport = uart_port_check(state);  in uart_change_speed()  local
500 	if (!tty || uport->type == PORT_UNKNOWN)  in uart_change_speed()
504 	uport->ops->set_termios(uport, termios, old_termios);  in uart_change_speed()
509 	spin_lock_irq(&uport->lock);  in uart_change_speed()
511 		uport->status |= UPSTAT_CTS_ENABLE;  in uart_change_speed()
513 		uport->status &= ~UPSTAT_CTS_ENABLE;  in uart_change_speed()
516 		uport->status &= ~UPSTAT_DCD_ENABLE;  in uart_change_speed()
518 		uport->status |= UPSTAT_DCD_ENABLE;  in uart_change_speed()
521 	hw_stopped = uport->hw_stopped;  in uart_change_speed()
522 	uport->hw_stopped = uart_softcts_mode(uport) &&  in uart_change_speed()
523 				!(uport->ops->get_mctrl(uport) & TIOCM_CTS);  in uart_change_speed()
524 	if (uport->hw_stopped) {  in uart_change_speed()
526 			uport->ops->stop_tx(uport);  in uart_change_speed()
531 	spin_unlock_irq(&uport->lock);  in uart_change_speed()
742 	struct uart_port *uport;  in uart_get_info()  local
752 	uport = uart_port_check(state);  in uart_get_info()
753 	if (!uport)  in uart_get_info()
756 	retinfo->type	    = uport->type;  in uart_get_info()
757 	retinfo->line	    = uport->line;  in uart_get_info()
758 	retinfo->port	    = uport->iobase;  in uart_get_info()
760 		retinfo->port_high = (long) uport->iobase >> HIGH_BITS_OFFSET;  in uart_get_info()
761 	retinfo->irq		    = uport->irq;  in uart_get_info()
762 	retinfo->flags	    = (__force int)uport->flags;  in uart_get_info()
763 	retinfo->xmit_fifo_size  = uport->fifosize;  in uart_get_info()
764 	retinfo->baud_base	    = uport->uartclk / 16;  in uart_get_info()
769 	retinfo->custom_divisor  = uport->custom_divisor;  in uart_get_info()
770 	retinfo->hub6	    = uport->hub6;  in uart_get_info()
771 	retinfo->io_type         = uport->iotype;  in uart_get_info()
772 	retinfo->iomem_reg_shift = uport->regshift;  in uart_get_info()
773 	retinfo->iomem_base      = (void *)(unsigned long)uport->mapbase;  in uart_get_info()
798 	struct uart_port *uport = uart_port_check(state);  in uart_set_info()  local
805 	if (!uport)  in uart_set_info()
819 	change_irq  = !(uport->flags & UPF_FIXED_PORT)  in uart_set_info()
820 		&& new_info->irq != uport->irq;  in uart_set_info()
827 	change_port = !(uport->flags & UPF_FIXED_PORT)  in uart_set_info()
828 		&& (new_port != uport->iobase ||  in uart_set_info()
829 		    (unsigned long)new_info->iomem_base != uport->mapbase ||  in uart_set_info()
830 		    new_info->hub6 != uport->hub6 ||  in uart_set_info()
831 		    new_info->io_type != uport->iotype ||  in uart_set_info()
832 		    new_info->iomem_reg_shift != uport->regshift ||  in uart_set_info()
833 		    new_info->type != uport->type);  in uart_set_info()
835 	old_flags = uport->flags;  in uart_set_info()
837 	old_custom_divisor = uport->custom_divisor;  in uart_set_info()
842 		    (new_info->baud_base != uport->uartclk / 16) ||  in uart_set_info()
846 		     new_info->xmit_fifo_size != uport->fifosize) ||  in uart_set_info()
849 		uport->flags = ((uport->flags & ~UPF_USR_MASK) |  in uart_set_info()
851 		uport->custom_divisor = new_info->custom_divisor;  in uart_set_info()
858 	if (uport->ops->verify_port)  in uart_set_info()
859 		retval = uport->ops->verify_port(uport, new_info);  in uart_set_info()
888 		old_iobase = uport->iobase;  in uart_set_info()
889 		old_mapbase = uport->mapbase;  in uart_set_info()
890 		old_type = uport->type;  in uart_set_info()
891 		old_hub6 = uport->hub6;  in uart_set_info()
892 		old_iotype = uport->iotype;  in uart_set_info()
893 		old_shift = uport->regshift;  in uart_set_info()
898 		if (old_type != PORT_UNKNOWN && uport->ops->release_port)  in uart_set_info()
899 			uport->ops->release_port(uport);  in uart_set_info()
901 		uport->iobase = new_port;  in uart_set_info()
902 		uport->type = new_info->type;  in uart_set_info()
903 		uport->hub6 = new_info->hub6;  in uart_set_info()
904 		uport->iotype = new_info->io_type;  in uart_set_info()
905 		uport->regshift = new_info->iomem_reg_shift;  in uart_set_info()
906 		uport->mapbase = (unsigned long)new_info->iomem_base;  in uart_set_info()
911 		if (uport->type != PORT_UNKNOWN && uport->ops->request_port) {  in uart_set_info()
912 			retval = uport->ops->request_port(uport);  in uart_set_info()
923 			uport->iobase = old_iobase;  in uart_set_info()
924 			uport->type = old_type;  in uart_set_info()
925 			uport->hub6 = old_hub6;  in uart_set_info()
926 			uport->iotype = old_iotype;  in uart_set_info()
927 			uport->regshift = old_shift;  in uart_set_info()
928 			uport->mapbase = old_mapbase;  in uart_set_info()
931 				retval = uport->ops->request_port(uport);  in uart_set_info()
937 					uport->type = PORT_UNKNOWN;  in uart_set_info()
951 		uport->irq      = new_info->irq;  in uart_set_info()
952 	if (!(uport->flags & UPF_FIXED_PORT))  in uart_set_info()
953 		uport->uartclk  = new_info->baud_base * 16;  in uart_set_info()
954 	uport->flags            = (uport->flags & ~UPF_CHANGE_MASK) |  in uart_set_info()
956 	uport->custom_divisor   = new_info->custom_divisor;  in uart_set_info()
960 		uport->fifosize = new_info->xmit_fifo_size;  in uart_set_info()
961 	port->low_latency = (uport->flags & UPF_LOW_LATENCY) ? 1 : 0;  in uart_set_info()
965 	if (uport->type == PORT_UNKNOWN)  in uart_set_info()
968 		if (((old_flags ^ uport->flags) & UPF_SPD_MASK) ||  in uart_set_info()
969 		    old_custom_divisor != uport->custom_divisor) {  in uart_set_info()
974 			if (uport->flags & UPF_SPD_MASK) {  in uart_set_info()
975 				dev_notice_ratelimited(uport->dev,  in uart_set_info()
1025 	struct uart_port *uport = uart_port_check(state);  in uart_get_lsr_info()  local
1028 	result = uport->ops->tx_empty(uport);  in uart_get_lsr_info()
1036 	if (uport->x_char ||  in uart_get_lsr_info()
1038 	     !uart_tx_stopped(uport)))  in uart_get_lsr_info()
1048 	struct uart_port *uport;  in uart_tiocmget()  local
1052 	uport = uart_port_check(state);  in uart_tiocmget()
1053 	if (!uport)  in uart_tiocmget()
1057 		result = uport->mctrl;  in uart_tiocmget()
1058 		spin_lock_irq(&uport->lock);  in uart_tiocmget()
1059 		result |= uport->ops->get_mctrl(uport);  in uart_tiocmget()
1060 		spin_unlock_irq(&uport->lock);  in uart_tiocmget()
1072 	struct uart_port *uport;  in uart_tiocmset()  local
1076 	uport = uart_port_check(state);  in uart_tiocmset()
1077 	if (!uport)  in uart_tiocmset()
1081 		uart_update_mctrl(uport, set, clear);  in uart_tiocmset()
1093 	struct uart_port *uport;  in uart_break_ctl()  local
1097 	uport = uart_port_check(state);  in uart_break_ctl()
1098 	if (!uport)  in uart_break_ctl()
1101 	if (uport->type != PORT_UNKNOWN)  in uart_break_ctl()
1102 		uport->ops->break_ctl(uport, break_state);  in uart_break_ctl()
1112 	struct uart_port *uport;  in uart_do_autoconfig()  local
1126 	uport = uart_port_check(state);  in uart_do_autoconfig()
1127 	if (!uport) {  in uart_do_autoconfig()
1140 		if (uport->type != PORT_UNKNOWN && uport->ops->release_port)  in uart_do_autoconfig()
1141 			uport->ops->release_port(uport);  in uart_do_autoconfig()
1144 		if (uport->flags & UPF_AUTO_IRQ)  in uart_do_autoconfig()
1151 		uport->ops->config_port(uport, flags);  in uart_do_autoconfig()
1164 static void uart_enable_ms(struct uart_port *uport)  in uart_enable_ms()  argument
1169 	if (uport->ops->enable_ms)  in uart_enable_ms()
1170 		uport->ops->enable_ms(uport);  in uart_enable_ms()
1184 	struct uart_port *uport;  in uart_wait_modem_status()  local
1193 	uport = uart_port_ref(state);  in uart_wait_modem_status()
1194 	if (!uport)  in uart_wait_modem_status()
1196 	spin_lock_irq(&uport->lock);  in uart_wait_modem_status()
1197 	memcpy(&cprev, &uport->icount, sizeof(struct uart_icount));  in uart_wait_modem_status()
1198 	uart_enable_ms(uport);  in uart_wait_modem_status()
1199 	spin_unlock_irq(&uport->lock);  in uart_wait_modem_status()
1203 		spin_lock_irq(&uport->lock);  in uart_wait_modem_status()
1204 		memcpy(&cnow, &uport->icount, sizeof(struct uart_icount));  in uart_wait_modem_status()
1205 		spin_unlock_irq(&uport->lock);  in uart_wait_modem_status()
1229 	uart_port_deref(uport);  in uart_wait_modem_status()
1245 	struct uart_port *uport;  in uart_get_icount()  local
1247 	uport = uart_port_ref(state);  in uart_get_icount()
1248 	if (!uport)  in uart_get_icount()
1250 	spin_lock_irq(&uport->lock);  in uart_get_icount()
1251 	memcpy(&cnow, &uport->icount, sizeof(struct uart_icount));  in uart_get_icount()
1252 	spin_unlock_irq(&uport->lock);  in uart_get_icount()
1253 	uart_port_deref(uport);  in uart_get_icount()
1319 	struct uart_port *uport;  in uart_ioctl()  local
1371 	uport = uart_port_check(state);  in uart_ioctl()
1373 	if (!uport || tty_io_error(tty)) {  in uart_ioctl()
1389 		ret = uart_get_rs485_config(uport, uarg);  in uart_ioctl()
1393 		ret = uart_set_rs485_config(uport, uarg);  in uart_ioctl()
1396 		if (uport->ops->ioctl)  in uart_ioctl()
1397 			ret = uport->ops->ioctl(uport, cmd, arg);  in uart_ioctl()
1409 	struct uart_port *uport;  in uart_set_ldisc()  local
1412 	uport = uart_port_check(state);  in uart_set_ldisc()
1413 	if (uport && uport->ops->set_ldisc)  in uart_set_ldisc()
1414 		uport->ops->set_ldisc(uport, &tty->termios);  in uart_set_ldisc()
1422 	struct uart_port *uport;  in uart_set_termios()  local
1428 	uport = uart_port_check(state);  in uart_set_termios()
1429 	if (!uport)  in uart_set_termios()
1436 	if (uport->flags & UPF_SOFT_FLOW) {  in uart_set_termios()
1463 		uart_clear_mctrl(uport, TIOCM_RTS | TIOCM_DTR);  in uart_set_termios()
1469 		uart_set_mctrl(uport, mask);  in uart_set_termios()
1504 	struct uart_port *uport = uart_port_check(state);  in uart_tty_port_shutdown()  local
1510 	if (WARN(!uport, "detached port still initialized!\n"))  in uart_tty_port_shutdown()
1513 	spin_lock_irq(&uport->lock);  in uart_tty_port_shutdown()
1514 	uport->ops->stop_rx(uport);  in uart_tty_port_shutdown()
1515 	spin_unlock_irq(&uport->lock);  in uart_tty_port_shutdown()
1601 	struct uart_port *uport;  in uart_hangup()  local
1607 	uport = uart_port_check(state);  in uart_hangup()
1608 	WARN(!uport, "hangup of detached port!\n");  in uart_hangup()
1618 		if (uport && !uart_console(uport))  in uart_hangup()
1630 	struct uart_port *uport = uart_port_check(state);  in uart_port_shutdown()  local
1644 	if (uport)  in uart_port_shutdown()
1645 		uport->ops->shutdown(uport);  in uart_port_shutdown()
1650 	if (uport)  in uart_port_shutdown()
1651 		synchronize_irq(uport->irq);  in uart_port_shutdown()
1657 	struct uart_port *uport;  in uart_carrier_raised()  local
1660 	uport = uart_port_ref(state);  in uart_carrier_raised()
1667 	if (WARN_ON(!uport))  in uart_carrier_raised()
1669 	spin_lock_irq(&uport->lock);  in uart_carrier_raised()
1670 	uart_enable_ms(uport);  in uart_carrier_raised()
1671 	mctrl = uport->ops->get_mctrl(uport);  in uart_carrier_raised()
1672 	spin_unlock_irq(&uport->lock);  in uart_carrier_raised()
1673 	uart_port_deref(uport);  in uart_carrier_raised()
1682 	struct uart_port *uport;  in uart_dtr_rts()  local
1684 	uport = uart_port_ref(state);  in uart_dtr_rts()
1685 	if (!uport)  in uart_dtr_rts()
1687 	uart_port_dtr_rts(uport, raise);  in uart_dtr_rts()
1688 	uart_port_deref(uport);  in uart_dtr_rts()
1719 	struct uart_port *uport;  in uart_port_activate()  local
1721 	uport = uart_port_check(state);  in uart_port_activate()
1722 	if (!uport || uport->flags & UPF_DEAD)  in uart_port_activate()
1725 	port->low_latency = (uport->flags & UPF_LOW_LATENCY) ? 1 : 0;  in uart_port_activate()
1753 	struct uart_port *uport;  in uart_line_info()  local
1759 	uport = uart_port_check(state);  in uart_line_info()
1760 	if (!uport)  in uart_line_info()
1763 	mmio = uport->iotype >= UPIO_MEM;  in uart_line_info()
1765 			uport->line, uart_type(uport),  in uart_line_info()
1767 			mmio ? (unsigned long long)uport->mapbase  in uart_line_info()
1768 			     : (unsigned long long)uport->iobase,  in uart_line_info()
1769 			uport->irq);  in uart_line_info()
1771 	if (uport->type == PORT_UNKNOWN) {  in uart_line_info()
1780 		spin_lock_irq(&uport->lock);  in uart_line_info()
1781 		status = uport->ops->get_mctrl(uport);  in uart_line_info()
1782 		spin_unlock_irq(&uport->lock);  in uart_line_info()
1787 				uport->icount.tx, uport->icount.rx);  in uart_line_info()
1788 		if (uport->icount.frame)  in uart_line_info()
1789 			seq_printf(m, " fe:%d",	uport->icount.frame);  in uart_line_info()
1790 		if (uport->icount.parity)  in uart_line_info()
1791 			seq_printf(m, " pe:%d",	uport->icount.parity);  in uart_line_info()
1792 		if (uport->icount.brk)  in uart_line_info()
1793 			seq_printf(m, " brk:%d", uport->icount.brk);  in uart_line_info()
1794 		if (uport->icount.overrun)  in uart_line_info()
1795 			seq_printf(m, " oe:%d", uport->icount.overrun);  in uart_line_info()
1796 		if (uport->icount.buf_overrun)  in uart_line_info()
1797 			seq_printf(m, " bo:%d", uport->icount.buf_overrun);  in uart_line_info()
1800 	if (uport->mctrl & (bit)) \  in uart_line_info()
2078 int uart_suspend_port(struct uart_driver *drv, struct uart_port *uport)  in uart_suspend_port()  argument
2080 	struct uart_state *state = drv->state + uport->line;  in uart_suspend_port()
2083 	struct uart_match match = {uport, drv};  in uart_suspend_port()
2087 	tty_dev = device_find_child(uport->dev, &match, serial_match_port);  in uart_suspend_port()
2089 		enable_irq_wake(uport->irq);  in uart_suspend_port()
2097 	if (!console_suspend_enabled && uart_console(uport))  in uart_suspend_port()
2100 	uport->suspended = 1;  in uart_suspend_port()
2103 		const struct uart_ops *ops = uport->ops;  in uart_suspend_port()
2109 		spin_lock_irq(&uport->lock);  in uart_suspend_port()
2110 		ops->stop_tx(uport);  in uart_suspend_port()
2111 		ops->set_mctrl(uport, 0);  in uart_suspend_port()
2112 		ops->stop_rx(uport);  in uart_suspend_port()
2113 		spin_unlock_irq(&uport->lock);  in uart_suspend_port()
2118 		for (tries = 3; !ops->tx_empty(uport) && tries; tries--)  in uart_suspend_port()
2121 			dev_err(uport->dev, "%s: Unable to drain transmitter\n",  in uart_suspend_port()
2122 				uport->name);  in uart_suspend_port()
2124 		ops->shutdown(uport);  in uart_suspend_port()
2130 	if (uart_console(uport))  in uart_suspend_port()
2131 		console_stop(uport->cons);  in uart_suspend_port()
2140 int uart_resume_port(struct uart_driver *drv, struct uart_port *uport)  in uart_resume_port()  argument
2142 	struct uart_state *state = drv->state + uport->line;  in uart_resume_port()
2145 	struct uart_match match = {uport, drv};  in uart_resume_port()
2150 	tty_dev = device_find_child(uport->dev, &match, serial_match_port);  in uart_resume_port()
2151 	if (!uport->suspended && device_may_wakeup(tty_dev)) {  in uart_resume_port()
2152 		if (irqd_is_wakeup_set(irq_get_irq_data((uport->irq))))  in uart_resume_port()
2153 			disable_irq_wake(uport->irq);  in uart_resume_port()
2159 	uport->suspended = 0;  in uart_resume_port()
2164 	if (uart_console(uport)) {  in uart_resume_port()
2169 		termios.c_cflag = uport->cons->cflag;  in uart_resume_port()
2179 		uport->ops->set_termios(uport, &termios, NULL);  in uart_resume_port()
2181 			console_start(uport->cons);  in uart_resume_port()
2185 		const struct uart_ops *ops = uport->ops;  in uart_resume_port()
2189 		spin_lock_irq(&uport->lock);  in uart_resume_port()
2190 		ops->set_mctrl(uport, 0);  in uart_resume_port()
2191 		spin_unlock_irq(&uport->lock);  in uart_resume_port()
2192 		if (console_suspend_enabled || !uart_console(uport)) {  in uart_resume_port()
2195 			ret = ops->startup(uport);  in uart_resume_port()
2199 				spin_lock_irq(&uport->lock);  in uart_resume_port()
2200 				ops->set_mctrl(uport, uport->mctrl);  in uart_resume_port()
2201 				ops->start_tx(uport);  in uart_resume_port()
2202 				spin_unlock_irq(&uport->lock);  in uart_resume_port()
2712 int uart_add_one_port(struct uart_driver *drv, struct uart_port *uport)  in uart_add_one_port()  argument
2722 	if (uport->line >= drv->nr)  in uart_add_one_port()
2725 	state = drv->state + uport->line;  in uart_add_one_port()
2738 	state->uart_port = uport;  in uart_add_one_port()
2739 	uport->state = state;  in uart_add_one_port()
2742 	uport->cons = drv->cons;  in uart_add_one_port()
2743 	uport->minor = drv->tty_driver->minor_start + uport->line;  in uart_add_one_port()
2744 	uport->name = kasprintf(GFP_KERNEL, "%s%d", drv->dev_name,  in uart_add_one_port()
2745 				drv->tty_driver->name_base + uport->line);  in uart_add_one_port()
2746 	if (!uport->name) {  in uart_add_one_port()
2755 	if (!(uart_console(uport) && (uport->cons->flags & CON_ENABLED))) {  in uart_add_one_port()
2756 		spin_lock_init(&uport->lock);  in uart_add_one_port()
2757 		lockdep_set_class(&uport->lock, &port_lock_key);  in uart_add_one_port()
2759 	if (uport->cons && uport->dev)  in uart_add_one_port()
2760 		of_console_check(uport->dev->of_node, uport->cons->name, uport->line);  in uart_add_one_port()
2762 	uart_configure_port(drv, state, uport);  in uart_add_one_port()
2764 	port->console = uart_console(uport);  in uart_add_one_port()
2767 	if (uport->attr_group)  in uart_add_one_port()
2770 	uport->tty_groups = kcalloc(num_groups, sizeof(*uport->tty_groups),  in uart_add_one_port()
2772 	if (!uport->tty_groups) {  in uart_add_one_port()
2776 	uport->tty_groups[0] = &tty_dev_attr_group;  in uart_add_one_port()
2777 	if (uport->attr_group)  in uart_add_one_port()
2778 		uport->tty_groups[1] = uport->attr_group;  in uart_add_one_port()
2785 			uport->line, uport->dev, port, uport->tty_groups);  in uart_add_one_port()
2789 		dev_err(uport->dev, "Cannot register tty device on line %d\n",  in uart_add_one_port()
2790 		       uport->line);  in uart_add_one_port()
2796 	uport->flags &= ~UPF_DEAD;  in uart_add_one_port()
2814 int uart_remove_one_port(struct uart_driver *drv, struct uart_port *uport)  in uart_remove_one_port()  argument
2816 	struct uart_state *state = drv->state + uport->line;  in uart_remove_one_port()
2832 	if (uart_port != uport)  in uart_remove_one_port()
2833 		dev_alert(uport->dev, "Removing wrong port: %p != %p\n",  in uart_remove_one_port()
2834 			  uart_port, uport);  in uart_remove_one_port()
2841 	uport->flags |= UPF_DEAD;  in uart_remove_one_port()
2847 	tty_port_unregister_device(port, drv->tty_driver, uport->line);  in uart_remove_one_port()
2858 	if (uart_console(uport))  in uart_remove_one_port()
2859 		unregister_console(uport->cons);  in uart_remove_one_port()
2864 	if (uport->type != PORT_UNKNOWN && uport->ops->release_port)  in uart_remove_one_port()
2865 		uport->ops->release_port(uport);  in uart_remove_one_port()
2866 	kfree(uport->tty_groups);  in uart_remove_one_port()
2867 	kfree(uport->name);  in uart_remove_one_port()
2872 	uport->type = PORT_UNKNOWN;  in uart_remove_one_port()
2918 void uart_handle_dcd_change(struct uart_port *uport, unsigned int status)  in uart_handle_dcd_change()  argument
2920 	struct tty_port *port = &uport->state->port;  in uart_handle_dcd_change()
2924 	lockdep_assert_held_once(&uport->lock);  in uart_handle_dcd_change()
2935 	uport->icount.dcd++;  in uart_handle_dcd_change()
2937 	if (uart_dcd_enabled(uport)) {  in uart_handle_dcd_change()
2953 void uart_handle_cts_change(struct uart_port *uport, unsigned int status)  in uart_handle_cts_change()  argument
2955 	lockdep_assert_held_once(&uport->lock);  in uart_handle_cts_change()
2957 	uport->icount.cts++;  in uart_handle_cts_change()
2959 	if (uart_softcts_mode(uport)) {  in uart_handle_cts_change()
2960 		if (uport->hw_stopped) {  in uart_handle_cts_change()
2962 				uport->hw_stopped = 0;  in uart_handle_cts_change()
2963 				uport->ops->start_tx(uport);  in uart_handle_cts_change()
2964 				uart_write_wakeup(uport);  in uart_handle_cts_change()
2968 				uport->hw_stopped = 1;  in uart_handle_cts_change()
2969 				uport->ops->stop_tx(uport);  in uart_handle_cts_change()