60 static int uart_dcd_enabled(struct uart_port *uport)  in uart_dcd_enabled()  argument
62 	return !!(uport->status & UPSTAT_DCD_ENABLE);  in uart_dcd_enabled()
72 static inline void uart_port_deref(struct uart_port *uport)  in uart_port_deref()  argument
74 	if (atomic_dec_and_test(&uport->state->refcount))  in uart_port_deref()
75 		wake_up(&uport->state->remove_wait);  in uart_port_deref()
86 #define uart_port_unlock(uport, flags)					\  argument
88 		struct uart_port *__uport = uport;			\
193 static void uart_port_dtr_rts(struct uart_port *uport, bool active)  in uart_port_dtr_rts()  argument
196 		uart_set_mctrl(uport, TIOCM_DTR | TIOCM_RTS);  in uart_port_dtr_rts()
198 		uart_clear_mctrl(uport, TIOCM_DTR | TIOCM_RTS);  in uart_port_dtr_rts()
205 	struct uart_port *uport = uart_port_check(state);  in uart_change_line_settings()  local
213 	if (!tty || uport->type == PORT_UNKNOWN)  in uart_change_line_settings()
217 	uport->ops->set_termios(uport, termios, old_termios);  in uart_change_line_settings()
222 	uart_port_lock_irq(uport);  in uart_change_line_settings()
224 		uport->status |= UPSTAT_CTS_ENABLE;  in uart_change_line_settings()
226 		uport->status &= ~UPSTAT_CTS_ENABLE;  in uart_change_line_settings()
229 		uport->status &= ~UPSTAT_DCD_ENABLE;  in uart_change_line_settings()
231 		uport->status |= UPSTAT_DCD_ENABLE;  in uart_change_line_settings()
234 	old_hw_stopped = uport->hw_stopped;  in uart_change_line_settings()
235 	uport->hw_stopped = uart_softcts_mode(uport) &&  in uart_change_line_settings()
236 			    !(uport->ops->get_mctrl(uport) & TIOCM_CTS);  in uart_change_line_settings()
237 	if (uport->hw_stopped != old_hw_stopped) {  in uart_change_line_settings()
239 			uport->ops->stop_tx(uport);  in uart_change_line_settings()
243 	uart_port_unlock_irq(uport);  in uart_change_line_settings()
249 	struct uart_port *uport;  in uart_alloc_xmit_buf()  local
261 	uport = uart_port_lock(state, flags);  in uart_alloc_xmit_buf()
266 		uart_port_unlock(uport, flags);  in uart_alloc_xmit_buf()
268 		uart_port_unlock(uport, flags);  in uart_alloc_xmit_buf()
282 	struct uart_port *uport;  in uart_free_xmit_buf()  local
292 	uport = uart_port_lock(state, flags);  in uart_free_xmit_buf()
296 	uart_port_unlock(uport, flags);  in uart_free_xmit_buf()
308 	struct uart_port *uport = uart_port_check(state);  in uart_port_startup()  local
311 	if (uport->type == PORT_UNKNOWN)  in uart_port_startup()
323 	retval = uport->ops->startup(uport);  in uart_port_startup()
325 		if (uart_console(uport) && uport->cons->cflag) {  in uart_port_startup()
326 			tty->termios.c_cflag = uport->cons->cflag;  in uart_port_startup()
327 			tty->termios.c_ispeed = uport->cons->ispeed;  in uart_port_startup()
328 			tty->termios.c_ospeed = uport->cons->ospeed;  in uart_port_startup()
329 			uport->cons->cflag = 0;  in uart_port_startup()
330 			uport->cons->ispeed = 0;  in uart_port_startup()
331 			uport->cons->ospeed = 0;  in uart_port_startup()
343 			uart_port_dtr_rts(uport, true);  in uart_port_startup()
361 	struct uart_port *uport;  in uart_startup()  local
374 	uport = uart_port_check(state);  in uart_startup()
375 	if (!uport)  in uart_startup()
378 	serial_base_port_startup(uport);  in uart_startup()
392 	struct uart_port *uport = uart_port_check(state);  in uart_shutdown()  local
401 	if (uport)  in uart_shutdown()
402 		serial_base_port_shutdown(uport);  in uart_shutdown()
410 		if (uport) {  in uart_shutdown()
411 			if (uart_console(uport) && tty) {  in uart_shutdown()
412 				uport->cons->cflag = tty->termios.c_cflag;  in uart_shutdown()
413 				uport->cons->ispeed = tty->termios.c_ispeed;  in uart_shutdown()
414 				uport->cons->ospeed = tty->termios.c_ospeed;  in uart_shutdown()
418 				uart_port_dtr_rts(uport, false);  in uart_shutdown()
697 void uart_xchar_out(struct uart_port *uport, int offset)  in uart_xchar_out()  argument
699 	serial_port_out(uport, offset, uport->x_char);  in uart_xchar_out()
700 	uport->icount.tx++;  in uart_xchar_out()
701 	uport->x_char = 0;  in uart_xchar_out()
792 	struct uart_port *uport;  in uart_get_info()  local
802 	uport = uart_port_check(state);  in uart_get_info()
803 	if (!uport)  in uart_get_info()
806 	retinfo->type	    = uport->type;  in uart_get_info()
807 	retinfo->line	    = uport->line;  in uart_get_info()
808 	retinfo->port	    = uport->iobase;  in uart_get_info()
810 		retinfo->port_high = (long) uport->iobase >> HIGH_BITS_OFFSET;  in uart_get_info()
811 	retinfo->irq		    = uport->irq;  in uart_get_info()
812 	retinfo->flags	    = (__force int)uport->flags;  in uart_get_info()
813 	retinfo->xmit_fifo_size  = uport->fifosize;  in uart_get_info()
814 	retinfo->baud_base	    = uport->uartclk / 16;  in uart_get_info()
819 	retinfo->custom_divisor  = uport->custom_divisor;  in uart_get_info()
820 	retinfo->hub6	    = uport->hub6;  in uart_get_info()
821 	retinfo->io_type         = uport->iotype;  in uart_get_info()
822 	retinfo->iomem_reg_shift = uport->regshift;  in uart_get_info()
823 	retinfo->iomem_base      = (void *)(unsigned long)uport->mapbase;  in uart_get_info()
837 static int uart_change_port(struct uart_port *uport,  in uart_change_port()  argument
845 	old_iobase = uport->iobase;  in uart_change_port()
846 	old_mapbase = uport->mapbase;  in uart_change_port()
847 	old_type = uport->type;  in uart_change_port()
848 	old_hub6 = uport->hub6;  in uart_change_port()
849 	old_iotype = uport->iotype;  in uart_change_port()
850 	old_shift = uport->regshift;  in uart_change_port()
852 	if (old_type != PORT_UNKNOWN && uport->ops->release_port)  in uart_change_port()
853 		uport->ops->release_port(uport);  in uart_change_port()
855 	uport->iobase = new_port;  in uart_change_port()
856 	uport->type = new_info->type;  in uart_change_port()
857 	uport->hub6 = new_info->hub6;  in uart_change_port()
858 	uport->iotype = new_info->io_type;  in uart_change_port()
859 	uport->regshift = new_info->iomem_reg_shift;  in uart_change_port()
860 	uport->mapbase = (unsigned long)new_info->iomem_base;  in uart_change_port()
862 	if (uport->type == PORT_UNKNOWN || !uport->ops->request_port)  in uart_change_port()
865 	retval = uport->ops->request_port(uport);  in uart_change_port()
873 	uport->iobase = old_iobase;  in uart_change_port()
874 	uport->type = old_type;  in uart_change_port()
875 	uport->hub6 = old_hub6;  in uart_change_port()
876 	uport->iotype = old_iotype;  in uart_change_port()
877 	uport->regshift = old_shift;  in uart_change_port()
878 	uport->mapbase = old_mapbase;  in uart_change_port()
883 	retval = uport->ops->request_port(uport);  in uart_change_port()
886 		uport->type = PORT_UNKNOWN;  in uart_change_port()
896 	struct uart_port *uport = uart_port_check(state);  in uart_set_info()  local
903 	if (!uport)  in uart_set_info()
917 	change_irq  = !(uport->flags & UPF_FIXED_PORT)  in uart_set_info()
918 		&& new_info->irq != uport->irq;  in uart_set_info()
925 	change_port = !(uport->flags & UPF_FIXED_PORT)  in uart_set_info()
926 		&& (new_port != uport->iobase ||  in uart_set_info()
927 		    (unsigned long)new_info->iomem_base != uport->mapbase ||  in uart_set_info()
928 		    new_info->hub6 != uport->hub6 ||  in uart_set_info()
929 		    new_info->io_type != uport->iotype ||  in uart_set_info()
930 		    new_info->iomem_reg_shift != uport->regshift ||  in uart_set_info()
931 		    new_info->type != uport->type);  in uart_set_info()
933 	old_flags = uport->flags;  in uart_set_info()
935 	old_custom_divisor = uport->custom_divisor;  in uart_set_info()
937 	if (!(uport->flags & UPF_FIXED_PORT)) {  in uart_set_info()
945 		    (new_info->baud_base != uport->uartclk / 16) ||  in uart_set_info()
949 		     new_info->xmit_fifo_size != uport->fifosize) ||  in uart_set_info()
952 		uport->flags = ((uport->flags & ~UPF_USR_MASK) |  in uart_set_info()
954 		uport->custom_divisor = new_info->custom_divisor;  in uart_set_info()
965 	if (uport->ops->verify_port) {  in uart_set_info()
966 		retval = uport->ops->verify_port(uport, new_info);  in uart_set_info()
988 		retval = uart_change_port(uport, new_info, new_port);  in uart_set_info()
994 		uport->irq      = new_info->irq;  in uart_set_info()
995 	if (!(uport->flags & UPF_FIXED_PORT))  in uart_set_info()
996 		uport->uartclk  = new_info->baud_base * 16;  in uart_set_info()
997 	uport->flags            = (uport->flags & ~UPF_CHANGE_MASK) |  in uart_set_info()
999 	uport->custom_divisor   = new_info->custom_divisor;  in uart_set_info()
1003 		uport->fifosize = new_info->xmit_fifo_size;  in uart_set_info()
1006 	if (uport->type == PORT_UNKNOWN)  in uart_set_info()
1010 		if (((old_flags ^ uport->flags) & UPF_SPD_MASK) ||  in uart_set_info()
1011 		    old_custom_divisor != uport->custom_divisor) {  in uart_set_info()
1016 			if (uport->flags & UPF_SPD_MASK) {  in uart_set_info()
1017 				dev_notice_ratelimited(uport->dev,  in uart_set_info()
1067 	struct uart_port *uport = uart_port_check(state);  in uart_get_lsr_info()  local
1070 	result = uport->ops->tx_empty(uport);  in uart_get_lsr_info()
1078 	if (uport->x_char ||  in uart_get_lsr_info()
1080 	     !uart_tx_stopped(uport)))  in uart_get_lsr_info()
1090 	struct uart_port *uport;  in uart_tiocmget()  local
1095 	uport = uart_port_check(state);  in uart_tiocmget()
1096 	if (!uport || tty_io_error(tty))  in uart_tiocmget()
1099 	uart_port_lock_irq(uport);  in uart_tiocmget()
1100 	result = uport->mctrl;  in uart_tiocmget()
1101 	result |= uport->ops->get_mctrl(uport);  in uart_tiocmget()
1102 	uart_port_unlock_irq(uport);  in uart_tiocmget()
1112 	struct uart_port *uport;  in uart_tiocmset()  local
1116 	uport = uart_port_check(state);  in uart_tiocmset()
1117 	if (!uport || tty_io_error(tty))  in uart_tiocmset()
1120 	uart_update_mctrl(uport, set, clear);  in uart_tiocmset()
1129 	struct uart_port *uport;  in uart_break_ctl()  local
1133 	uport = uart_port_check(state);  in uart_break_ctl()
1134 	if (!uport)  in uart_break_ctl()
1137 	if (uport->type != PORT_UNKNOWN && uport->ops->break_ctl)  in uart_break_ctl()
1138 		uport->ops->break_ctl(uport, break_state);  in uart_break_ctl()
1146 	struct uart_port *uport;  in uart_do_autoconfig()  local
1158 		uport = uart_port_check(state);  in uart_do_autoconfig()
1159 		if (!uport)  in uart_do_autoconfig()
1171 		if (uport->type != PORT_UNKNOWN && uport->ops->release_port)  in uart_do_autoconfig()
1172 			uport->ops->release_port(uport);  in uart_do_autoconfig()
1175 		if (uport->flags & UPF_AUTO_IRQ)  in uart_do_autoconfig()
1182 		uport->ops->config_port(uport, flags);  in uart_do_autoconfig()
1196 static void uart_enable_ms(struct uart_port *uport)  in uart_enable_ms()  argument
1201 	if (uport->ops->enable_ms)  in uart_enable_ms()
1202 		uport->ops->enable_ms(uport);  in uart_enable_ms()
1216 	struct uart_port *uport;  in uart_wait_modem_status()  local
1225 	uport = uart_port_ref(state);  in uart_wait_modem_status()
1226 	if (!uport)  in uart_wait_modem_status()
1228 	uart_port_lock_irq(uport);  in uart_wait_modem_status()
1229 	memcpy(&cprev, &uport->icount, sizeof(struct uart_icount));  in uart_wait_modem_status()
1230 	uart_enable_ms(uport);  in uart_wait_modem_status()
1231 	uart_port_unlock_irq(uport);  in uart_wait_modem_status()
1235 		uart_port_lock_irq(uport);  in uart_wait_modem_status()
1236 		memcpy(&cnow, &uport->icount, sizeof(struct uart_icount));  in uart_wait_modem_status()
1237 		uart_port_unlock_irq(uport);  in uart_wait_modem_status()
1261 	uart_port_deref(uport);  in uart_wait_modem_status()
1277 	struct uart_port *uport;  in uart_get_icount()  local
1279 	uport = uart_port_ref(state);  in uart_get_icount()
1280 	if (!uport)  in uart_get_icount()
1282 	uart_port_lock_irq(uport);  in uart_get_icount()
1283 	memcpy(&cnow, &uport->icount, sizeof(struct uart_icount));  in uart_get_icount()
1284 	uart_port_unlock_irq(uport);  in uart_get_icount()
1285 	uart_port_deref(uport);  in uart_get_icount()
1577 	struct uart_port *uport;  in uart_ioctl()  local
1618 	uport = uart_port_check(state);  in uart_ioctl()
1620 	if (!uport || tty_io_error(tty)) {  in uart_ioctl()
1636 		ret = uart_get_rs485_config(uport, uarg);  in uart_ioctl()
1640 		ret = uart_set_rs485_config(tty, uport, uarg);  in uart_ioctl()
1651 		if (uport->ops->ioctl)  in uart_ioctl()
1652 			ret = uport->ops->ioctl(uport, cmd, arg);  in uart_ioctl()
1666 	struct uart_port *uport;  in uart_set_ldisc()  local
1673 	uport = uart_port_check(state);  in uart_set_ldisc()
1674 	if (uport && uport->ops->set_ldisc)  in uart_set_ldisc()
1675 		uport->ops->set_ldisc(uport, &tty->termios);  in uart_set_ldisc()
1683 	struct uart_port *uport;  in uart_set_termios()  local
1690 	uport = uart_port_check(state);  in uart_set_termios()
1691 	if (!uport)  in uart_set_termios()
1698 	if (uport->flags & UPF_SOFT_FLOW) {  in uart_set_termios()
1724 		uart_clear_mctrl(uport, TIOCM_RTS | TIOCM_DTR);  in uart_set_termios()
1731 		uart_set_mctrl(uport, mask);  in uart_set_termios()
1764 	struct uart_port *uport = uart_port_check(state);  in uart_tty_port_shutdown()  local
1770 	if (WARN(!uport, "detached port still initialized!\n"))  in uart_tty_port_shutdown()
1773 	uart_port_lock_irq(uport);  in uart_tty_port_shutdown()
1774 	uport->ops->stop_rx(uport);  in uart_tty_port_shutdown()
1775 	uart_port_unlock_irq(uport);  in uart_tty_port_shutdown()
1777 	serial_base_port_shutdown(uport);  in uart_tty_port_shutdown()
1864 	struct uart_port *uport;  in uart_hangup()  local
1870 	uport = uart_port_check(state);  in uart_hangup()
1871 	WARN(!uport, "hangup of detached port!\n");  in uart_hangup()
1881 		if (uport && !uart_console(uport))  in uart_hangup()
1893 	struct uart_port *uport = uart_port_check(state);  in uart_port_shutdown()  local
1904 	if (uport) {  in uart_port_shutdown()
1906 		uport->ops->shutdown(uport);  in uart_port_shutdown()
1909 		synchronize_irq(uport->irq);  in uart_port_shutdown()
1916 	struct uart_port *uport;  in uart_carrier_raised()  local
1919 	uport = uart_port_ref(state);  in uart_carrier_raised()
1926 	if (WARN_ON(!uport))  in uart_carrier_raised()
1928 	uart_port_lock_irq(uport);  in uart_carrier_raised()
1929 	uart_enable_ms(uport);  in uart_carrier_raised()
1930 	mctrl = uport->ops->get_mctrl(uport);  in uart_carrier_raised()
1931 	uart_port_unlock_irq(uport);  in uart_carrier_raised()
1932 	uart_port_deref(uport);  in uart_carrier_raised()
1940 	struct uart_port *uport;  in uart_dtr_rts()  local
1942 	uport = uart_port_ref(state);  in uart_dtr_rts()
1943 	if (!uport)  in uart_dtr_rts()
1945 	uart_port_dtr_rts(uport, active);  in uart_dtr_rts()
1946 	uart_port_deref(uport);  in uart_dtr_rts()
1984 	struct uart_port *uport;  in uart_port_activate()  local
1987 	uport = uart_port_check(state);  in uart_port_activate()
1988 	if (!uport || uport->flags & UPF_DEAD)  in uart_port_activate()
2020 	struct uart_port *uport;  in uart_line_info()  local
2027 	uport = uart_port_check(state);  in uart_line_info()
2028 	if (!uport)  in uart_line_info()
2031 	mmio = uport->iotype >= UPIO_MEM;  in uart_line_info()
2033 			uport->line, uart_type(uport),  in uart_line_info()
2035 			mmio ? (unsigned long long)uport->mapbase  in uart_line_info()
2036 			     : (unsigned long long)uport->iobase,  in uart_line_info()
2037 			uport->irq);  in uart_line_info()
2039 	if (uport->type == PORT_UNKNOWN) {  in uart_line_info()
2048 		uart_port_lock_irq(uport);  in uart_line_info()
2049 		status = uport->ops->get_mctrl(uport);  in uart_line_info()
2050 		uart_port_unlock_irq(uport);  in uart_line_info()
2055 				uport->icount.tx, uport->icount.rx);  in uart_line_info()
2056 		if (uport->icount.frame)  in uart_line_info()
2057 			seq_printf(m, " fe:%d",	uport->icount.frame);  in uart_line_info()
2058 		if (uport->icount.parity)  in uart_line_info()
2059 			seq_printf(m, " pe:%d",	uport->icount.parity);  in uart_line_info()
2060 		if (uport->icount.brk)  in uart_line_info()
2061 			seq_printf(m, " brk:%d", uport->icount.brk);  in uart_line_info()
2062 		if (uport->icount.overrun)  in uart_line_info()
2063 			seq_printf(m, " oe:%d", uport->icount.overrun);  in uart_line_info()
2064 		if (uport->icount.buf_overrun)  in uart_line_info()
2065 			seq_printf(m, " bo:%d", uport->icount.buf_overrun);  in uart_line_info()
2068 	if (uport->mctrl & (bit)) \  in uart_line_info()
2361 int uart_suspend_port(struct uart_driver *drv, struct uart_port *uport)  in uart_suspend_port()  argument
2363 	struct uart_state *state = drv->state + uport->line;  in uart_suspend_port()
2366 	struct uart_match match = {uport, drv};  in uart_suspend_port()
2370 	tty_dev = device_find_child(&uport->port_dev->dev, &match, serial_match_port);  in uart_suspend_port()
2372 		enable_irq_wake(uport->irq);  in uart_suspend_port()
2384 	if (!console_suspend_enabled && uart_console(uport)) {  in uart_suspend_port()
2385 		if (uport->ops->start_rx) {  in uart_suspend_port()
2386 			uart_port_lock_irq(uport);  in uart_suspend_port()
2387 			uport->ops->stop_rx(uport);  in uart_suspend_port()
2388 			uart_port_unlock_irq(uport);  in uart_suspend_port()
2390 		device_set_awake_path(uport->dev);  in uart_suspend_port()
2394 	uport->suspended = 1;  in uart_suspend_port()
2397 		const struct uart_ops *ops = uport->ops;  in uart_suspend_port()
2404 		uart_port_lock_irq(uport);  in uart_suspend_port()
2405 		ops->stop_tx(uport);  in uart_suspend_port()
2406 		if (!(uport->rs485.flags & SER_RS485_ENABLED))  in uart_suspend_port()
2407 			ops->set_mctrl(uport, 0);  in uart_suspend_port()
2409 		mctrl = uport->mctrl;  in uart_suspend_port()
2410 		uport->mctrl = 0;  in uart_suspend_port()
2411 		ops->stop_rx(uport);  in uart_suspend_port()
2412 		uart_port_unlock_irq(uport);  in uart_suspend_port()
2417 		for (tries = 3; !ops->tx_empty(uport) && tries; tries--)  in uart_suspend_port()
2420 			dev_err(uport->dev, "%s: Unable to drain transmitter\n",  in uart_suspend_port()
2421 				uport->name);  in uart_suspend_port()
2423 		ops->shutdown(uport);  in uart_suspend_port()
2424 		uport->mctrl = mctrl;  in uart_suspend_port()
2430 	if (uart_console(uport))  in uart_suspend_port()
2431 		console_suspend(uport->cons);  in uart_suspend_port()
2439 int uart_resume_port(struct uart_driver *drv, struct uart_port *uport)  in uart_resume_port()  argument
2441 	struct uart_state *state = drv->state + uport->line;  in uart_resume_port()
2444 	struct uart_match match = {uport, drv};  in uart_resume_port()
2449 	tty_dev = device_find_child(&uport->port_dev->dev, &match, serial_match_port);  in uart_resume_port()
2450 	if (!uport->suspended && device_may_wakeup(tty_dev)) {  in uart_resume_port()
2451 		if (irqd_is_wakeup_set(irq_get_irq_data((uport->irq))))  in uart_resume_port()
2452 			disable_irq_wake(uport->irq);  in uart_resume_port()
2457 	uport->suspended = 0;  in uart_resume_port()
2462 	if (uart_console(uport)) {  in uart_resume_port()
2467 		termios.c_cflag = uport->cons->cflag;  in uart_resume_port()
2468 		termios.c_ispeed = uport->cons->ispeed;  in uart_resume_port()
2469 		termios.c_ospeed = uport->cons->ospeed;  in uart_resume_port()
2479 		uport->ops->set_termios(uport, &termios, NULL);  in uart_resume_port()
2480 		if (!console_suspend_enabled && uport->ops->start_rx) {  in uart_resume_port()
2481 			uart_port_lock_irq(uport);  in uart_resume_port()
2482 			uport->ops->start_rx(uport);  in uart_resume_port()
2483 			uart_port_unlock_irq(uport);  in uart_resume_port()
2486 			console_resume(uport->cons);  in uart_resume_port()
2490 		const struct uart_ops *ops = uport->ops;  in uart_resume_port()
2494 		uart_port_lock_irq(uport);  in uart_resume_port()
2495 		if (!(uport->rs485.flags & SER_RS485_ENABLED))  in uart_resume_port()
2496 			ops->set_mctrl(uport, 0);  in uart_resume_port()
2497 		uart_port_unlock_irq(uport);  in uart_resume_port()
2498 		if (console_suspend_enabled || !uart_console(uport)) {  in uart_resume_port()
2502 			ret = ops->startup(uport);  in uart_resume_port()
2506 				uart_rs485_config(uport);  in uart_resume_port()
2507 				uart_port_lock_irq(uport);  in uart_resume_port()
2508 				if (!(uport->rs485.flags & SER_RS485_ENABLED))  in uart_resume_port()
2509 					ops->set_mctrl(uport, uport->mctrl);  in uart_resume_port()
2510 				ops->start_tx(uport);  in uart_resume_port()
2511 				uart_port_unlock_irq(uport);  in uart_resume_port()
3022 	struct uart_port *uport;  in console_show()  local
3026 	uport = uart_port_check(state);  in console_show()
3027 	if (uport)  in console_show()
3028 		console = uart_console_registered(uport);  in console_show()
3039 	struct uart_port *uport;  in console_store()  local
3048 	uport = uart_port_check(state);  in console_store()
3049 	if (!uport)  in console_store()
3052 	oldconsole = uart_console_registered(uport);  in console_store()
3054 		ret = unregister_console(uport->cons);  in console_store()
3058 		if (!uart_console(uport))  in console_store()
3061 		uport->console_reinit = 1;  in console_store()
3062 		register_console(uport->cons);  in console_store()
3117 static int serial_core_add_one_port(struct uart_driver *drv, struct uart_port *uport)  in serial_core_add_one_port()  argument
3124 	if (uport->line >= drv->nr)  in serial_core_add_one_port()
3127 	state = drv->state + uport->line;  in serial_core_add_one_port()
3137 	state->uart_port = uport;  in serial_core_add_one_port()
3138 	uport->state = state;  in serial_core_add_one_port()
3144 	if (!uart_console_registered(uport))  in serial_core_add_one_port()
3145 		uart_port_spin_lock_init(uport);  in serial_core_add_one_port()
3148 	uart_port_set_cons(uport, drv->cons);  in serial_core_add_one_port()
3149 	uport->minor = drv->tty_driver->minor_start + uport->line;  in serial_core_add_one_port()
3150 	uport->name = kasprintf(GFP_KERNEL, "%s%d", drv->dev_name,  in serial_core_add_one_port()
3151 				drv->tty_driver->name_base + uport->line);  in serial_core_add_one_port()
3152 	if (!uport->name)  in serial_core_add_one_port()
3155 	if (uport->cons && uport->dev)  in serial_core_add_one_port()
3156 		of_console_check(uport->dev->of_node, uport->cons->name, uport->line);  in serial_core_add_one_port()
3158 	uart_configure_port(drv, state, uport);  in serial_core_add_one_port()
3160 	port->console = uart_console(uport);  in serial_core_add_one_port()
3163 	if (uport->attr_group)  in serial_core_add_one_port()
3166 	uport->tty_groups = kcalloc(num_groups, sizeof(*uport->tty_groups),  in serial_core_add_one_port()
3168 	if (!uport->tty_groups)  in serial_core_add_one_port()
3171 	uport->tty_groups[0] = &tty_dev_attr_group;  in serial_core_add_one_port()
3172 	if (uport->attr_group)  in serial_core_add_one_port()
3173 		uport->tty_groups[1] = uport->attr_group;  in serial_core_add_one_port()
3176 	uport->flags &= ~UPF_DEAD;  in serial_core_add_one_port()
3183 			uport->line, uport->dev, &uport->port_dev->dev, port,  in serial_core_add_one_port()
3184 			uport->tty_groups);  in serial_core_add_one_port()
3188 		uport->flags |= UPF_DEAD;  in serial_core_add_one_port()
3189 		dev_err(uport->dev, "Cannot register tty device on line %d\n",  in serial_core_add_one_port()
3190 		       uport->line);  in serial_core_add_one_port()
3208 					struct uart_port *uport)  in serial_core_remove_one_port()  argument
3210 	struct uart_state *state = drv->state + uport->line;  in serial_core_remove_one_port()
3217 	if (uart_port != uport)  in serial_core_remove_one_port()
3218 		dev_alert(uport->dev, "Removing wrong port: %p != %p\n",  in serial_core_remove_one_port()
3219 			  uart_port, uport);  in serial_core_remove_one_port()
3230 	tty_port_unregister_device(port, drv->tty_driver, uport->line);  in serial_core_remove_one_port()
3241 	if (uart_console(uport))  in serial_core_remove_one_port()
3242 		unregister_console(uport->cons);  in serial_core_remove_one_port()
3247 	if (uport->type != PORT_UNKNOWN && uport->ops->release_port)  in serial_core_remove_one_port()
3248 		uport->ops->release_port(uport);  in serial_core_remove_one_port()
3249 	kfree(uport->tty_groups);  in serial_core_remove_one_port()
3250 	kfree(uport->name);  in serial_core_remove_one_port()
3255 	uport->type = PORT_UNKNOWN;  in serial_core_remove_one_port()
3256 	uport->port_dev = NULL;  in serial_core_remove_one_port()
3438 void uart_handle_dcd_change(struct uart_port *uport, bool active)  in uart_handle_dcd_change()  argument
3440 	struct tty_port *port = &uport->state->port;  in uart_handle_dcd_change()
3444 	lockdep_assert_held_once(&uport->lock);  in uart_handle_dcd_change()
3455 	uport->icount.dcd++;  in uart_handle_dcd_change()
3457 	if (uart_dcd_enabled(uport)) {  in uart_handle_dcd_change()
3473 void uart_handle_cts_change(struct uart_port *uport, bool active)  in uart_handle_cts_change()  argument
3475 	lockdep_assert_held_once(&uport->lock);  in uart_handle_cts_change()
3477 	uport->icount.cts++;  in uart_handle_cts_change()
3479 	if (uart_softcts_mode(uport)) {  in uart_handle_cts_change()
3480 		if (uport->hw_stopped) {  in uart_handle_cts_change()
3482 				uport->hw_stopped = false;  in uart_handle_cts_change()
3483 				uport->ops->start_tx(uport);  in uart_handle_cts_change()
3484 				uart_write_wakeup(uport);  in uart_handle_cts_change()
3488 				uport->hw_stopped = true;  in uart_handle_cts_change()
3489 				uport->ops->stop_tx(uport);  in uart_handle_cts_change()