Merging upstream version 6.7.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

16 files changed, 500 insertions, 406 deletions

diff --git a/drivers/tty/serial/8250/8250_aspeed_vuart.c b/drivers/tty/serial/8250/8250_aspeed_vuart.c
index 4a9e71b2db..d7482ae33a 100644
--- a/drivers/tty/serial/8250/8250_aspeed_vuart.c
+++ b/drivers/tty/serial/8250/8250_aspeed_vuart.c
@@ -34,7 +34,6 @@
 
 struct aspeed_vuart {
 	struct device		*dev;
-	struct clk		*clk;
 	int			line;
 	struct timer_list	unthrottle_timer;
 	struct uart_8250_port	*port;
@@ -288,9 +287,9 @@ static void aspeed_vuart_set_throttle(struct uart_port *port, bool throttle)
 	struct uart_8250_port *up = up_to_u8250p(port);
 	unsigned long flags;
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	__aspeed_vuart_set_throttle(up, throttle);
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 }
 
 static void aspeed_vuart_throttle(struct uart_port *port)
@@ -340,7 +339,7 @@ static int aspeed_vuart_handle_irq(struct uart_port *port)
 	if (iir & UART_IIR_NO_INT)
 		return 0;
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 
 	lsr = serial_port_in(port, UART_LSR);
 
@@ -415,12 +414,14 @@ static int aspeed_vuart_map_irq_polarity(u32 dt)
 static int aspeed_vuart_probe(struct platform_device *pdev)
 {
 	struct of_phandle_args sirq_polarity_sense_args;
+	struct device *dev = &pdev->dev;
 	struct uart_8250_port port;
 	struct aspeed_vuart *vuart;
 	struct device_node *np;
 	struct resource *res;
 	u32 clk, prop, sirq[2];
 	int rc, sirq_polarity;
+	struct clk *vclk;
 
 	np = pdev->dev.of_node;
 
@@ -453,19 +454,13 @@ static int aspeed_vuart_probe(struct platform_device *pdev)
 		return rc;
 
 	if (of_property_read_u32(np, "clock-frequency", &clk)) {
-		vuart->clk = devm_clk_get(&pdev->dev, NULL);
-		if (IS_ERR(vuart->clk)) {
-			dev_warn(&pdev->dev,
-				"clk or clock-frequency not defined\n");
-			rc = PTR_ERR(vuart->clk);
+		vclk = devm_clk_get_enabled(dev, NULL);
+		if (IS_ERR(vclk)) {
+			rc = dev_err_probe(dev, PTR_ERR(vclk), "clk or clock-frequency not defined\n");
 			goto err_sysfs_remove;
 		}
 
-		rc = clk_prepare_enable(vuart->clk);
-		if (rc < 0)
-			goto err_sysfs_remove;
-
-		clk = clk_get_rate(vuart->clk);
+		clk = clk_get_rate(vclk);
 	}
 
 	/* If current-speed was set, then try not to change it. */
@@ -533,7 +528,7 @@ static int aspeed_vuart_probe(struct platform_device *pdev)
 
 	rc = aspeed_vuart_set_lpc_address(vuart, prop);
 	if (rc < 0) {
-		dev_err(&pdev->dev, "invalid value in aspeed,lpc-io-reg property\n");
+		dev_err_probe(dev, rc, "invalid value in aspeed,lpc-io-reg property\n");
 		goto err_clk_disable;
 	}
 
@@ -545,14 +540,14 @@ static int aspeed_vuart_probe(struct platform_device *pdev)
 
 	rc = aspeed_vuart_set_sirq(vuart, sirq[0]);
 	if (rc < 0) {
-		dev_err(&pdev->dev, "invalid sirq number in aspeed,lpc-interrupts property\n");
+		dev_err_probe(dev, rc, "invalid sirq number in aspeed,lpc-interrupts property\n");
 		goto err_clk_disable;
 	}
 
 	sirq_polarity = aspeed_vuart_map_irq_polarity(sirq[1]);
 	if (sirq_polarity < 0) {
-		dev_err(&pdev->dev, "invalid sirq polarity in aspeed,lpc-interrupts property\n");
-		rc = sirq_polarity;
+		rc = dev_err_probe(dev, sirq_polarity,
+				   "invalid sirq polarity in aspeed,lpc-interrupts property\n");
 		goto err_clk_disable;
 	}
 
@@ -565,7 +560,6 @@ static int aspeed_vuart_probe(struct platform_device *pdev)
 	return 0;
 
 err_clk_disable:
-	clk_disable_unprepare(vuart->clk);
 	irq_dispose_mapping(port.port.irq);
 err_sysfs_remove:
 	sysfs_remove_group(&vuart->dev->kobj, &aspeed_vuart_attr_group);
@@ -580,7 +574,6 @@ static int aspeed_vuart_remove(struct platform_device *pdev)
 	aspeed_vuart_set_enabled(vuart, false);
 	serial8250_unregister_port(vuart->line);
 	sysfs_remove_group(&vuart->dev->kobj, &aspeed_vuart_attr_group);
-	clk_disable_unprepare(vuart->clk);
 
 	return 0;
 }
diff --git a/drivers/tty/serial/8250/8250_bcm7271.c b/drivers/tty/serial/8250/8250_bcm7271.c
index aa5aff0467..55dea2539c 100644
--- a/drivers/tty/serial/8250/8250_bcm7271.c
+++ b/drivers/tty/serial/8250/8250_bcm7271.c
@@ -567,7 +567,7 @@ static irqreturn_t brcmuart_isr(int irq, void *dev_id)
 	if (interrupts == 0)
 		return IRQ_NONE;
 
-	spin_lock_irqsave(&up->lock, flags);
+	uart_port_lock_irqsave(up, &flags);
 
 	/* Clear all interrupts */
 	udma_writel(priv, REGS_DMA_ISR, UDMA_INTR_CLEAR, interrupts);
@@ -581,7 +581,7 @@ static irqreturn_t brcmuart_isr(int irq, void *dev_id)
 	if ((rval | tval) == 0)
 		dev_warn(dev, "Spurious interrupt: 0x%x\n", interrupts);
 
-	spin_unlock_irqrestore(&up->lock, flags);
+	uart_port_unlock_irqrestore(up, flags);
 	return IRQ_HANDLED;
 }
 
@@ -608,10 +608,10 @@ static int brcmuart_startup(struct uart_port *port)
 	 *
 	 * Synchronize UART_IER access against the console.
 	 */
-	spin_lock_irq(&port->lock);
+	uart_port_lock_irq(port);
 	up->ier &= ~UART_IER_RDI;
 	serial_port_out(port, UART_IER, up->ier);
-	spin_unlock_irq(&port->lock);
+	uart_port_unlock_irq(port);
 
 	priv->tx_running = false;
 	priv->dma.rx_dma = NULL;
@@ -629,7 +629,7 @@ static void brcmuart_shutdown(struct uart_port *port)
 	struct brcmuart_priv *priv = up->port.private_data;
 	unsigned long flags;
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	priv->shutdown = true;
 	if (priv->dma_enabled) {
 		stop_rx_dma(up);
@@ -645,7 +645,7 @@ static void brcmuart_shutdown(struct uart_port *port)
 	 */
 	up->dma = NULL;
 
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 	serial8250_do_shutdown(port);
 }
 
@@ -788,7 +788,7 @@ static int brcmuart_handle_irq(struct uart_port *p)
 	 * interrupt but there is no data ready.
 	 */
 	if (((iir & UART_IIR_ID) == UART_IIR_RX_TIMEOUT) && !(priv->shutdown)) {
-		spin_lock_irqsave(&p->lock, flags);
+		uart_port_lock_irqsave(p, &flags);
 		status = serial_port_in(p, UART_LSR);
 		if ((status & UART_LSR_DR) == 0) {
 
@@ -813,7 +813,7 @@ static int brcmuart_handle_irq(struct uart_port *p)
 
 			handled = 1;
 		}
-		spin_unlock_irqrestore(&p->lock, flags);
+		uart_port_unlock_irqrestore(p, flags);
 		if (handled)
 			return 1;
 	}
@@ -831,7 +831,7 @@ static enum hrtimer_restart brcmuart_hrtimer_func(struct hrtimer *t)
 	if (priv->shutdown)
 		return HRTIMER_NORESTART;
 
-	spin_lock_irqsave(&p->lock, flags);
+	uart_port_lock_irqsave(p, &flags);
 	status = serial_port_in(p, UART_LSR);
 
 	/*
@@ -855,7 +855,7 @@ static enum hrtimer_restart brcmuart_hrtimer_func(struct hrtimer *t)
 		status |= UART_MCR_RTS;
 		serial_port_out(p, UART_MCR, status);
 	}
-	spin_unlock_irqrestore(&p->lock, flags);
+	uart_port_unlock_irqrestore(p, flags);
 	return HRTIMER_NORESTART;
 }
 
@@ -984,10 +984,9 @@ static int brcmuart_probe(struct platform_device *pdev)
 	}
 
 	/* We should have just the uart base registers or all the registers */
-	if (x != 1 && x != REGS_MAX) {
-		dev_warn(dev, "%s registers not specified\n", reg_names[x]);
-		return -EINVAL;
-	}
+	if (x != 1 && x != REGS_MAX)
+		return dev_err_probe(dev, -EINVAL, "%s registers not specified\n",
+				     reg_names[x]);
 
 	/* if the DMA registers were specified, try to enable DMA */
 	if (x > REGS_DMA_RX) {
@@ -1016,27 +1015,23 @@ static int brcmuart_probe(struct platform_device *pdev)
 	of_property_read_u32(np, "clock-frequency", &clk_rate);
 
 	/* See if a Baud clock has been specified */
-	baud_mux_clk = devm_clk_get(dev, "sw_baud");
-	if (IS_ERR(baud_mux_clk)) {
-		if (PTR_ERR(baud_mux_clk) == -EPROBE_DEFER) {
-			ret = -EPROBE_DEFER;
-			goto release_dma;
-		}
-		dev_dbg(dev, "BAUD MUX clock not specified\n");
-	} else {
+	baud_mux_clk = devm_clk_get_optional_enabled(dev, "sw_baud");
+	ret = PTR_ERR_OR_ZERO(baud_mux_clk);
+	if (ret)
+		goto release_dma;
+	if (baud_mux_clk) {
 		dev_dbg(dev, "BAUD MUX clock found\n");
-		ret = clk_prepare_enable(baud_mux_clk);
-		if (ret)
-			goto release_dma;
+
 		priv->baud_mux_clk = baud_mux_clk;
 		init_real_clk_rates(dev, priv);
 		clk_rate = priv->default_mux_rate;
+	} else {
+		dev_dbg(dev, "BAUD MUX clock not specified\n");
 	}
 
 	if (clk_rate == 0) {
-		dev_err(dev, "clock-frequency or clk not defined\n");
-		ret = -EINVAL;
-		goto err_clk_disable;
+		ret = dev_err_probe(dev, -EINVAL, "clock-frequency or clk not defined\n");
+		goto release_dma;
 	}
 
 	dev_dbg(dev, "DMA is %senabled\n", priv->dma_enabled ? "" : "not ");
@@ -1093,7 +1088,7 @@ static int brcmuart_probe(struct platform_device *pdev)
 
 	ret = serial8250_register_8250_port(&up);
 	if (ret < 0) {
-		dev_err(dev, "unable to register 8250 port\n");
+		dev_err_probe(dev, ret, "unable to register 8250 port\n");
 		goto err;
 	}
 	priv->line = ret;
@@ -1102,14 +1097,13 @@ static int brcmuart_probe(struct platform_device *pdev)
 	if (priv->dma_enabled) {
 		dma_irq = platform_get_irq_byname(pdev,  "dma");
 		if (dma_irq < 0) {
-			ret = dma_irq;
-			dev_err(dev, "no IRQ resource info\n");
+			ret = dev_err_probe(dev, dma_irq, "no IRQ resource info\n");
 			goto err1;
 		}
 		ret = devm_request_irq(dev, dma_irq, brcmuart_isr,
 				IRQF_SHARED, "uart DMA irq", &new_port->port);
 		if (ret) {
-			dev_err(dev, "unable to register IRQ handler\n");
+			dev_err_probe(dev, ret, "unable to register IRQ handler\n");
 			goto err1;
 		}
 	}
@@ -1121,8 +1115,6 @@ err1:
 	serial8250_unregister_port(priv->line);
 err:
 	brcmuart_free_bufs(dev, priv);
-err_clk_disable:
-	clk_disable_unprepare(baud_mux_clk);
 release_dma:
 	if (priv->dma_enabled)
 		brcmuart_arbitration(priv, 0);
@@ -1137,7 +1129,6 @@ static int brcmuart_remove(struct platform_device *pdev)
 	hrtimer_cancel(&priv->hrt);
 	serial8250_unregister_port(priv->line);
 	brcmuart_free_bufs(&pdev->dev, priv);
-	clk_disable_unprepare(priv->baud_mux_clk);
 	if (priv->dma_enabled)
 		brcmuart_arbitration(priv, 0);
 	return 0;
@@ -1154,10 +1145,10 @@ static int __maybe_unused brcmuart_suspend(struct device *dev)
 	 * This will prevent resume from enabling RTS before the
 	 *  baud rate has been restored.
 	 */
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	priv->saved_mctrl = port->mctrl;
 	port->mctrl &= ~TIOCM_RTS;
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 
 	serial8250_suspend_port(priv->line);
 	clk_disable_unprepare(priv->baud_mux_clk);
@@ -1196,10 +1187,10 @@ static int __maybe_unused brcmuart_resume(struct device *dev)
 
 	if (priv->saved_mctrl & TIOCM_RTS) {
 		/* Restore RTS */
-		spin_lock_irqsave(&port->lock, flags);
+		uart_port_lock_irqsave(port, &flags);
 		port->mctrl |= TIOCM_RTS;
 		port->ops->set_mctrl(port, port->mctrl);
-		spin_unlock_irqrestore(&port->lock, flags);
+		uart_port_unlock_irqrestore(port, flags);
 	}
 
 	return 0;
diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
index 3449f8790e..9127331518 100644
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -259,7 +259,7 @@ static void serial8250_backup_timeout(struct timer_list *t)
 	unsigned int iir, ier = 0, lsr;
 	unsigned long flags;
 
-	spin_lock_irqsave(&up->port.lock, flags);
+	uart_port_lock_irqsave(&up->port, &flags);
 
 	/*
 	 * Must disable interrupts or else we risk racing with the interrupt
@@ -292,7 +292,7 @@ static void serial8250_backup_timeout(struct timer_list *t)
 	if (up->port.irq)
 		serial_out(up, UART_IER, ier);
 
-	spin_unlock_irqrestore(&up->port.lock, flags);
+	uart_port_unlock_irqrestore(&up->port, flags);
 
 	/* Standard timer interval plus 0.2s to keep the port running */
 	mod_timer(&up->timer,
@@ -611,7 +611,7 @@ static int univ8250_console_setup(struct console *co, char *options)
 	 * if so, search for the first available port that does have
 	 * console support.
 	 */
-	if (co->index >= UART_NR)
+	if (co->index < 0 || co->index >= UART_NR)
 		co->index = 0;
 
 	/*
@@ -992,11 +992,11 @@ static void serial_8250_overrun_backoff_work(struct work_struct *work)
 	struct uart_port *port = &up->port;
 	unsigned long flags;
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	up->ier |= UART_IER_RLSI | UART_IER_RDI;
 	up->port.read_status_mask |= UART_LSR_DR;
 	serial_out(up, UART_IER, up->ier);
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 }
 
 /**
@@ -1194,9 +1194,9 @@ void serial8250_unregister_port(int line)
 	if (uart->em485) {
 		unsigned long flags;
 
-		spin_lock_irqsave(&uart->port.lock, flags);
+		uart_port_lock_irqsave(&uart->port, &flags);
 		serial8250_em485_destroy(uart);
-		spin_unlock_irqrestore(&uart->port.lock, flags);
+		uart_port_unlock_irqrestore(&uart->port, flags);
 	}
 
 	uart_remove_one_port(&serial8250_reg, &uart->port);
diff --git a/drivers/tty/serial/8250/8250_dma.c b/drivers/tty/serial/8250/8250_dma.c
index 7fa6650179..8b30ca8fdd 100644
--- a/drivers/tty/serial/8250/8250_dma.c
+++ b/drivers/tty/serial/8250/8250_dma.c
@@ -22,7 +22,7 @@ static void __dma_tx_complete(void *param)
 	dma_sync_single_for_cpu(dma->txchan->device->dev, dma->tx_addr,
 				UART_XMIT_SIZE, DMA_TO_DEVICE);
 
-	spin_lock_irqsave(&p->port.lock, flags);
+	uart_port_lock_irqsave(&p->port, &flags);
 
 	dma->tx_running = 0;
 
@@ -35,7 +35,7 @@ static void __dma_tx_complete(void *param)
 	if (ret || !dma->tx_running)
 		serial8250_set_THRI(p);
 
-	spin_unlock_irqrestore(&p->port.lock, flags);
+	uart_port_unlock_irqrestore(&p->port, flags);
 }
 
 static void __dma_rx_complete(struct uart_8250_port *p)
@@ -70,7 +70,7 @@ static void dma_rx_complete(void *param)
 	struct uart_8250_dma *dma = p->dma;
 	unsigned long flags;
 
-	spin_lock_irqsave(&p->port.lock, flags);
+	uart_port_lock_irqsave(&p->port, &flags);
 	if (dma->rx_running)
 		__dma_rx_complete(p);
 
@@ -80,7 +80,7 @@ static void dma_rx_complete(void *param)
 	 */
 	if (!dma->rx_running && (serial_lsr_in(p) & UART_LSR_DR))
 		p->dma->rx_dma(p);
-	spin_unlock_irqrestore(&p->port.lock, flags);
+	uart_port_unlock_irqrestore(&p->port, flags);
 }
 
 int serial8250_tx_dma(struct uart_8250_port *p)
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index a1f2259cc9..e6218766d0 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -263,20 +263,20 @@ static int dw8250_handle_irq(struct uart_port *p)
 	 * so we limit the workaround only to non-DMA mode.
 	 */
 	if (!up->dma && rx_timeout) {
-		spin_lock_irqsave(&p->lock, flags);
+		uart_port_lock_irqsave(p, &flags);
 		status = serial_lsr_in(up);
 
 		if (!(status & (UART_LSR_DR | UART_LSR_BI)))
 			(void) p->serial_in(p, UART_RX);
 
-		spin_unlock_irqrestore(&p->lock, flags);
+		uart_port_unlock_irqrestore(p, flags);
 	}
 
 	/* Manually stop the Rx DMA transfer when acting as flow controller */
 	if (quirks & DW_UART_QUIRK_IS_DMA_FC && up->dma && up->dma->rx_running && rx_timeout) {
-		spin_lock_irqsave(&p->lock, flags);
+		uart_port_lock_irqsave(p, &flags);
 		status = serial_lsr_in(up);
-		spin_unlock_irqrestore(&p->lock, flags);
+		uart_port_unlock_irqrestore(p, flags);
 
 		if (status & (UART_LSR_DR | UART_LSR_BI)) {
 			dw8250_writel_ext(p, RZN1_UART_RDMACR, 0);
@@ -498,11 +498,6 @@ static void dw8250_quirks(struct uart_port *p, struct dw8250_data *data)
 	}
 }
 
-static void dw8250_clk_disable_unprepare(void *data)
-{
-	clk_disable_unprepare(data);
-}
-
 static void dw8250_reset_control_assert(void *data)
 {
 	reset_control_assert(data);
@@ -598,23 +593,15 @@ static int dw8250_probe(struct platform_device *pdev)
 	device_property_read_u32(dev, "clock-frequency", &p->uartclk);
 
 	/* If there is separate baudclk, get the rate from it. */
-	data->clk = devm_clk_get_optional(dev, "baudclk");
+	data->clk = devm_clk_get_optional_enabled(dev, "baudclk");
 	if (data->clk == NULL)
-		data->clk = devm_clk_get_optional(dev, NULL);
+		data->clk = devm_clk_get_optional_enabled(dev, NULL);
 	if (IS_ERR(data->clk))
 		return PTR_ERR(data->clk);
 
 	INIT_WORK(&data->clk_work, dw8250_clk_work_cb);
 	data->clk_notifier.notifier_call = dw8250_clk_notifier_cb;
 
-	err = clk_prepare_enable(data->clk);
-	if (err)
-		return dev_err_probe(dev, err, "could not enable optional baudclk\n");
-
-	err = devm_add_action_or_reset(dev, dw8250_clk_disable_unprepare, data->clk);
-	if (err)
-		return err;
-
 	if (data->clk)
 		p->uartclk = clk_get_rate(data->clk);
 
@@ -622,18 +609,10 @@ static int dw8250_probe(struct platform_device *pdev)
 	if (!p->uartclk)
 		return dev_err_probe(dev, -EINVAL, "clock rate not defined\n");
 
-	data->pclk = devm_clk_get_optional(dev, "apb_pclk");
+	data->pclk = devm_clk_get_optional_enabled(dev, "apb_pclk");
 	if (IS_ERR(data->pclk))
 		return PTR_ERR(data->pclk);
 
-	err = clk_prepare_enable(data->pclk);
-	if (err)
-		return dev_err_probe(dev, err, "could not enable apb_pclk\n");
-
-	err = devm_add_action_or_reset(dev, dw8250_clk_disable_unprepare, data->pclk);
-	if (err)
-		return err;
-
 	data->rst = devm_reset_control_get_optional_exclusive(dev, NULL);
 	if (IS_ERR(data->rst))
 		return PTR_ERR(data->rst);
diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c
index 8385be8468..23366f868a 100644
--- a/drivers/tty/serial/8250/8250_exar.c
+++ b/drivers/tty/serial/8250/8250_exar.c
@@ -18,7 +18,6 @@
 #include <linux/slab.h>
 #include <linux/string.h>
 #include <linux/tty.h>
-#include <linux/8250_pci.h>
 #include <linux/delay.h>
 
 #include <asm/byteorder.h>
@@ -47,12 +46,6 @@
 #define PCI_SUBDEVICE_ID_USR_2980		0x0128
 #define PCI_SUBDEVICE_ID_USR_2981		0x0129
 
-#define PCI_DEVICE_ID_SEALEVEL_710xC		0x1001
-#define PCI_DEVICE_ID_SEALEVEL_720xC		0x1002
-#define PCI_DEVICE_ID_SEALEVEL_740xC		0x1004
-#define PCI_DEVICE_ID_SEALEVEL_780xC		0x1008
-#define PCI_DEVICE_ID_SEALEVEL_716xC		0x1010
-
 #define UART_EXAR_INT0		0x80
 #define UART_EXAR_8XMODE	0x88	/* 8X sampling rate select */
 #define UART_EXAR_SLEEP		0x8b	/* Sleep mode */
@@ -84,6 +77,9 @@
 
 #define UART_EXAR_RS485_DLY(x)	((x) << 4)
 
+#define UART_EXAR_DLD			0x02 /* Divisor Fractional */
+#define UART_EXAR_DLD_485_POLARITY	0x80 /* RS-485 Enable Signal Polarity */
+
 /*
  * IOT2040 MPIO wiring semantics:
  *
@@ -201,9 +197,9 @@ static int xr17v35x_startup(struct uart_port *port)
 	 *
 	 * Synchronize UART_IER access against the console.
 	 */
-	spin_lock_irq(&port->lock);
+	uart_port_lock_irq(port);
 	serial_port_out(port, UART_IER, 0);
-	spin_unlock_irq(&port->lock);
+	uart_port_unlock_irq(port);
 
 	return serial8250_do_startup(port);
 }
@@ -445,6 +441,44 @@ static int generic_rs485_config(struct uart_port *port, struct ktermios *termios
 	return 0;
 }
 
+static int sealevel_rs485_config(struct uart_port *port, struct ktermios *termios,
+				  struct serial_rs485 *rs485)
+{
+	u8 __iomem *p = port->membase;
+	u8 old_lcr;
+	u8 efr;
+	u8 dld;
+	int ret;
+
+	ret = generic_rs485_config(port, termios, rs485);
+	if (ret)
+		return ret;
+
+	if (rs485->flags & SER_RS485_ENABLED) {
+		old_lcr = readb(p + UART_LCR);
+
+		/* Set EFR[4]=1 to enable enhanced feature registers */
+		efr = readb(p + UART_XR_EFR);
+		efr |= UART_EFR_ECB;
+		writeb(efr, p + UART_XR_EFR);
+
+		/* Set MCR to use DTR as Auto-RS485 Enable signal */
+		writeb(UART_MCR_OUT1, p + UART_MCR);
+
+		/* Set LCR[7]=1 to enable access to DLD register */
+		writeb(old_lcr | UART_LCR_DLAB, p + UART_LCR);
+
+		/* Set DLD[7]=1 for inverted RS485 Enable logic */
+		dld = readb(p + UART_EXAR_DLD);
+		dld |= UART_EXAR_DLD_485_POLARITY;
+		writeb(dld, p + UART_EXAR_DLD);
+
+		writeb(old_lcr, p + UART_LCR);
+	}
+
+	return 0;
+}
+
 static const struct serial_rs485 generic_rs485_supported = {
 	.flags = SER_RS485_ENABLED | SER_RS485_RTS_ON_SEND,
 };
@@ -567,6 +601,9 @@ pci_xr17v35x_setup(struct exar8250 *priv, struct pci_dev *pcidev,
 	port->port.rs485_config = platform->rs485_config;
 	port->port.rs485_supported = *(platform->rs485_supported);
 
+	if (pcidev->subsystem_vendor == PCI_VENDOR_ID_SEALEVEL)
+		port->port.rs485_config = sealevel_rs485_config;
+
 	/*
 	 * Setup the UART clock for the devices on expansion slot to
 	 * half the clock speed of the main chip (which is 125MHz)
@@ -653,8 +690,6 @@ exar_pci_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
 		nr_ports = BIT(((pcidev->device & 0x38) >> 3) - 1);
 	else if (board->num_ports)
 		nr_ports = board->num_ports;
-	else if (pcidev->vendor == PCI_VENDOR_ID_SEALEVEL)
-		nr_ports = pcidev->device & 0xff;
 	else
 		nr_ports = pcidev->device & 0x0f;
 
@@ -894,12 +929,6 @@ static const struct pci_device_id exar_pci_tbl[] = {
 	EXAR_DEVICE(COMMTECH, 4224PCI335, pbn_fastcom335_4),
 	EXAR_DEVICE(COMMTECH, 2324PCI335, pbn_fastcom335_4),
 	EXAR_DEVICE(COMMTECH, 2328PCI335, pbn_fastcom335_8),
-
-	EXAR_DEVICE(SEALEVEL, 710xC, pbn_exar_XR17V35x),
-	EXAR_DEVICE(SEALEVEL, 720xC, pbn_exar_XR17V35x),
-	EXAR_DEVICE(SEALEVEL, 740xC, pbn_exar_XR17V35x),
-	EXAR_DEVICE(SEALEVEL, 780xC, pbn_exar_XR17V35x),
-	EXAR_DEVICE(SEALEVEL, 716xC, pbn_exar_XR17V35x),
 	{ 0, }
 };
 MODULE_DEVICE_TABLE(pci, exar_pci_tbl);
diff --git a/drivers/tty/serial/8250/8250_fsl.c b/drivers/tty/serial/8250/8250_fsl.c
index 6af4e1c121..f522eb5026 100644
--- a/drivers/tty/serial/8250/8250_fsl.c
+++ b/drivers/tty/serial/8250/8250_fsl.c
@@ -30,11 +30,11 @@ int fsl8250_handle_irq(struct uart_port *port)
 	unsigned int iir;
 	struct uart_8250_port *up = up_to_u8250p(port);
 
-	spin_lock_irqsave(&up->port.lock, flags);
+	uart_port_lock_irqsave(&up->port, &flags);
 
 	iir = port->serial_in(port, UART_IIR);
 	if (iir & UART_IIR_NO_INT) {
-		spin_unlock_irqrestore(&up->port.lock, flags);
+		uart_port_unlock_irqrestore(&up->port, flags);
 		return 0;
 	}
 
@@ -54,7 +54,7 @@ int fsl8250_handle_irq(struct uart_port *port)
 	if (unlikely(up->lsr_saved_flags & UART_LSR_BI)) {
 		up->lsr_saved_flags &= ~UART_LSR_BI;
 		port->serial_in(port, UART_RX);
-		spin_unlock_irqrestore(&up->port.lock, flags);
+		uart_port_unlock_irqrestore(&up->port, flags);
 		return 1;
 	}
 
diff --git a/drivers/tty/serial/8250/8250_mid.c b/drivers/tty/serial/8250/8250_mid.c
index 2cc78a4bf7..8ec0386360 100644
--- a/drivers/tty/serial/8250/8250_mid.c
+++ b/drivers/tty/serial/8250/8250_mid.c
@@ -12,7 +12,6 @@
 #include <linux/rational.h>
 
 #include <linux/dma/hsu.h>
-#include <linux/8250_pci.h>
 
 #include "8250.h"
 
@@ -32,9 +31,9 @@
 struct mid8250;
 
 struct mid8250_board {
-	unsigned int flags;
 	unsigned long freq;
 	unsigned int base_baud;
+	unsigned int bar;
 	int (*setup)(struct mid8250 *, struct uart_port *p);
 	void (*exit)(struct mid8250 *);
 };
@@ -169,7 +168,6 @@ static int dnv_setup(struct mid8250 *mid, struct uart_port *p)
 {
 	struct hsu_dma_chip *chip = &mid->dma_chip;
 	struct pci_dev *pdev = to_pci_dev(p->dev);
-	unsigned int bar = FL_GET_BASE(mid->board->flags);
 	int ret;
 
 	pci_set_master(pdev);
@@ -183,7 +181,7 @@ static int dnv_setup(struct mid8250 *mid, struct uart_port *p)
 	chip->dev = &pdev->dev;
 	chip->irq = pci_irq_vector(pdev, 0);
 	chip->regs = p->membase;
-	chip->length = pci_resource_len(pdev, bar);
+	chip->length = pci_resource_len(pdev, mid->board->bar);
 	chip->offset = DNV_DMA_CHAN_OFFSET;
 
 	/* Falling back to PIO mode if DMA probing fails */
@@ -291,7 +289,6 @@ static int mid8250_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 {
 	struct uart_8250_port uart;
 	struct mid8250 *mid;
-	unsigned int bar;
 	int ret;
 
 	ret = pcim_enable_device(pdev);
@@ -303,7 +300,6 @@ static int mid8250_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 		return -ENOMEM;
 
 	mid->board = (struct mid8250_board *)id->driver_data;
-	bar = FL_GET_BASE(mid->board->flags);
 
 	memset(&uart, 0, sizeof(struct uart_8250_port));
 
@@ -316,8 +312,8 @@ static int mid8250_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	uart.port.flags = UPF_SHARE_IRQ | UPF_FIXED_PORT | UPF_FIXED_TYPE;
 	uart.port.set_termios = mid8250_set_termios;
 
-	uart.port.mapbase = pci_resource_start(pdev, bar);
-	uart.port.membase = pcim_iomap(pdev, bar, 0);
+	uart.port.mapbase = pci_resource_start(pdev, mid->board->bar);
+	uart.port.membase = pcim_iomap(pdev, mid->board->bar, 0);
 	if (!uart.port.membase)
 		return -ENOMEM;
 
@@ -353,25 +349,25 @@ static void mid8250_remove(struct pci_dev *pdev)
 }
 
 static const struct mid8250_board pnw_board = {
-	.flags = FL_BASE0,
 	.freq = 50000000,
 	.base_baud = 115200,
+	.bar = 0,
 	.setup = pnw_setup,
 	.exit = pnw_exit,
 };
 
 static const struct mid8250_board tng_board = {
-	.flags = FL_BASE0,
 	.freq = 38400000,
 	.base_baud = 1843200,
+	.bar = 0,
 	.setup = tng_setup,
 	.exit = tng_exit,
 };
 
 static const struct mid8250_board dnv_board = {
-	.flags = FL_BASE1,
 	.freq = 133333333,
 	.base_baud = 115200,
+	.bar = 1,
 	.setup = dnv_setup,
 	.exit = dnv_exit,
 };
diff --git a/drivers/tty/serial/8250/8250_mtk.c b/drivers/tty/serial/8250/8250_mtk.c
index 74da5676ce..23457daae8 100644
--- a/drivers/tty/serial/8250/8250_mtk.c
+++ b/drivers/tty/serial/8250/8250_mtk.c
@@ -102,7 +102,7 @@ static void mtk8250_dma_rx_complete(void *param)
 	if (data->rx_status == DMA_RX_SHUTDOWN)
 		return;
 
-	spin_lock_irqsave(&up->port.lock, flags);
+	uart_port_lock_irqsave(&up->port, &flags);
 
 	dmaengine_tx_status(dma->rxchan, dma->rx_cookie, &state);
 	total = dma->rx_size - state.residue;
@@ -128,7 +128,7 @@ static void mtk8250_dma_rx_complete(void *param)
 
 	mtk8250_rx_dma(up);
 
-	spin_unlock_irqrestore(&up->port.lock, flags);
+	uart_port_unlock_irqrestore(&up->port, flags);
 }
 
 static void mtk8250_rx_dma(struct uart_8250_port *up)
@@ -368,7 +368,7 @@ mtk8250_set_termios(struct uart_port *port, struct ktermios *termios,
 	 * Ok, we're now changing the port state.  Do it with
 	 * interrupts disabled.
 	 */
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 
 	/*
 	 * Update the per-port timeout.
@@ -416,7 +416,7 @@ mtk8250_set_termios(struct uart_port *port, struct ktermios *termios,
 	if (uart_console(port))
 		up->port.cons->cflag = termios->c_cflag;
 
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 	/* Don't rewrite B0 */
 	if (tty_termios_baud_rate(termios))
 		tty_termios_encode_baud_rate(termios, baud, baud);
diff --git a/drivers/tty/serial/8250/8250_of.c b/drivers/tty/serial/8250/8250_of.c
index 51329625c4..ef3e745bd0 100644
--- a/drivers/tty/serial/8250/8250_of.c
+++ b/drivers/tty/serial/8250/8250_of.c
@@ -33,7 +33,8 @@ static int of_platform_serial_setup(struct platform_device *ofdev,
 			struct of_serial_info *info)
 {
 	struct resource resource;
-	struct device_node *np = ofdev->dev.of_node;
+	struct device *dev = &ofdev->dev;
+	struct device_node *np = dev->of_node;
 	struct uart_port *port = &up->port;
 	u32 clk, spd, prop;
 	int ret, irq;
@@ -46,19 +47,12 @@ static int of_platform_serial_setup(struct platform_device *ofdev,
 	if (of_property_read_u32(np, "clock-frequency", &clk)) {
 
 		/* Get clk rate through clk driver if present */
-		info->clk = devm_clk_get(&ofdev->dev, NULL);
+		info->clk = devm_clk_get_enabled(dev, NULL);
 		if (IS_ERR(info->clk)) {
-			ret = PTR_ERR(info->clk);
-			if (ret != -EPROBE_DEFER)
-				dev_warn(&ofdev->dev,
-					 "failed to get clock: %d\n", ret);
+			ret = dev_err_probe(dev, PTR_ERR(info->clk), "failed to get clock\n");
 			goto err_pmruntime;
 		}
 
-		ret = clk_prepare_enable(info->clk);
-		if (ret < 0)
-			goto err_pmruntime;
-
 		clk = clk_get_rate(info->clk);
 	}
 	/* If current-speed was set, then try not to change it. */
@@ -67,8 +61,8 @@ static int of_platform_serial_setup(struct platform_device *ofdev,
 
 	ret = of_address_to_resource(np, 0, &resource);
 	if (ret) {
-		dev_warn(&ofdev->dev, "invalid address\n");
-		goto err_unprepare;
+		dev_err_probe(dev, ret, "invalid address\n");
+		goto err_pmruntime;
 	}
 
 	port->flags = UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF | UPF_FIXED_PORT |
@@ -85,10 +79,9 @@ static int of_platform_serial_setup(struct platform_device *ofdev,
 		/* Check for shifted address mapping */
 		if (of_property_read_u32(np, "reg-offset", &prop) == 0) {
 			if (prop >= port->mapsize) {
-				dev_warn(&ofdev->dev, "reg-offset %u exceeds region size %pa\n",
-					 prop, &port->mapsize);
-				ret = -EINVAL;
-				goto err_unprepare;
+				ret = dev_err_probe(dev, -EINVAL, "reg-offset %u exceeds region size %pa\n",
+						    prop, &port->mapsize);
+				goto err_pmruntime;
 			}
 
 			port->mapbase += prop;
@@ -109,10 +102,9 @@ static int of_platform_serial_setup(struct platform_device *ofdev,
 					       UPIO_MEM32BE : UPIO_MEM32;
 				break;
 			default:
-				dev_warn(&ofdev->dev, "unsupported reg-io-width (%d)\n",
-					 prop);
-				ret = -EINVAL;
-				goto err_unprepare;
+				ret = dev_err_probe(dev, -EINVAL, "unsupported reg-io-width (%u)\n",
+						    prop);
+				goto err_pmruntime;
 			}
 		}
 		port->flags |= UPF_IOREMAP;
@@ -139,7 +131,7 @@ static int of_platform_serial_setup(struct platform_device *ofdev,
 	if (irq < 0) {
 		if (irq == -EPROBE_DEFER) {
 			ret = -EPROBE_DEFER;
-			goto err_unprepare;
+			goto err_pmruntime;
 		}
 		/* IRQ support not mandatory */
 		irq = 0;
@@ -150,12 +142,12 @@ static int of_platform_serial_setup(struct platform_device *ofdev,
 	info->rst = devm_reset_control_get_optional_shared(&ofdev->dev, NULL);
 	if (IS_ERR(info->rst)) {
 		ret = PTR_ERR(info->rst);
-		goto err_unprepare;
+		goto err_pmruntime;
 	}
 
 	ret = reset_control_deassert(info->rst);
 	if (ret)
-		goto err_unprepare;
+		goto err_pmruntime;
 
 	port->type = type;
 	port->uartclk = clk;
@@ -173,7 +165,7 @@ static int of_platform_serial_setup(struct platform_device *ofdev,
 	case PORT_RT2880:
 		ret = rt288x_setup(port);
 		if (ret)
-			goto err_unprepare;
+			goto err_pmruntime;
 		break;
 	}
 
@@ -185,8 +177,6 @@ static int of_platform_serial_setup(struct platform_device *ofdev,
 	}
 
 	return 0;
-err_unprepare:
-	clk_disable_unprepare(info->clk);
 err_pmruntime:
 	pm_runtime_put_sync(&ofdev->dev);
 	pm_runtime_disable(&ofdev->dev);
@@ -253,7 +243,6 @@ err_dispose:
 	irq_dispose_mapping(port8250.port.irq);
 	pm_runtime_put_sync(&ofdev->dev);
 	pm_runtime_disable(&ofdev->dev);
-	clk_disable_unprepare(info->clk);
 err_free:
 	kfree(info);
 	return ret;
@@ -271,7 +260,6 @@ static int of_platform_serial_remove(struct platform_device *ofdev)
 	reset_control_assert(info->rst);
 	pm_runtime_put_sync(&ofdev->dev);
 	pm_runtime_disable(&ofdev->dev);
-	clk_disable_unprepare(info->clk);
 	kfree(info);
 	return 0;
 }
diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c
index 346167afe9..dd2be7a813 100644
--- a/drivers/tty/serial/8250/8250_omap.c
+++ b/drivers/tty/serial/8250/8250_omap.c
@@ -8,6 +8,7 @@
  *
  */
 
+#include <linux/atomic.h>
 #include <linux/clk.h>
 #include <linux/device.h>
 #include <linux/io.h>
@@ -27,6 +28,7 @@
 #include <linux/pm_wakeirq.h>
 #include <linux/dma-mapping.h>
 #include <linux/sys_soc.h>
+#include <linux/pm_domain.h>
 
 #include "8250.h"
 
@@ -114,6 +116,12 @@
 /* RX FIFO occupancy indicator */
 #define UART_OMAP_RX_LVL		0x19
 
+/*
+ * Copy of the genpd flags for the console.
+ * Only used if console suspend is disabled
+ */
+static unsigned int genpd_flags_console;
+
 struct omap8250_priv {
 	void __iomem *membase;
 	int line;
@@ -130,6 +138,7 @@ struct omap8250_priv {
 
 	u8 tx_trigger;
 	u8 rx_trigger;
+	atomic_t active;
 	bool is_suspending;
 	int wakeirq;
 	int wakeups_enabled;
@@ -401,7 +410,7 @@ static void omap_8250_set_termios(struct uart_port *port,
 	 * interrupts disabled.
 	 */
 	pm_runtime_get_sync(port->dev);
-	spin_lock_irq(&port->lock);
+	uart_port_lock_irq(port);
 
 	/*
 	 * Update the per-port timeout.
@@ -504,7 +513,7 @@ static void omap_8250_set_termios(struct uart_port *port,
 	}
 	omap8250_restore_regs(up);
 
-	spin_unlock_irq(&up->port.lock);
+	uart_port_unlock_irq(&up->port);
 	pm_runtime_mark_last_busy(port->dev);
 	pm_runtime_put_autosuspend(port->dev);
 
@@ -529,7 +538,7 @@ static void omap_8250_pm(struct uart_port *port, unsigned int state,
 	pm_runtime_get_sync(port->dev);
 
 	/* Synchronize UART_IER access against the console. */
-	spin_lock_irq(&port->lock);
+	uart_port_lock_irq(port);
 
 	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
 	efr = serial_in(up, UART_EFR);
@@ -541,7 +550,7 @@ static void omap_8250_pm(struct uart_port *port, unsigned int state,
 	serial_out(up, UART_EFR, efr);
 	serial_out(up, UART_LCR, 0);
 
-	spin_unlock_irq(&port->lock);
+	uart_port_unlock_irq(port);
 
 	pm_runtime_mark_last_busy(port->dev);
 	pm_runtime_put_autosuspend(port->dev);
@@ -632,14 +641,23 @@ static irqreturn_t omap8250_irq(int irq, void *dev_id)
 	unsigned int iir, lsr;
 	int ret;
 
+	pm_runtime_get_noresume(port->dev);
+
+	/* Shallow idle state wake-up to an IO interrupt? */
+	if (atomic_add_unless(&priv->active, 1, 1)) {
+		priv->latency = priv->calc_latency;
+		schedule_work(&priv->qos_work);
+	}
+
 #ifdef CONFIG_SERIAL_8250_DMA
 	if (up->dma) {
 		ret = omap_8250_dma_handle_irq(port);
+		pm_runtime_mark_last_busy(port->dev);
+		pm_runtime_put(port->dev);
 		return IRQ_RETVAL(ret);
 	}
 #endif
 
-	serial8250_rpm_get(up);
 	lsr = serial_port_in(port, UART_LSR);
 	iir = serial_port_in(port, UART_IIR);
 	ret = serial8250_handle_irq(port, iir);
@@ -660,7 +678,7 @@ static irqreturn_t omap8250_irq(int irq, void *dev_id)
 		unsigned long delay;
 
 		/* Synchronize UART_IER access against the console. */
-		spin_lock(&port->lock);
+		uart_port_lock(port);
 		up->ier = port->serial_in(port, UART_IER);
 		if (up->ier & (UART_IER_RLSI | UART_IER_RDI)) {
 			port->ops->stop_rx(port);
@@ -670,13 +688,14 @@ static irqreturn_t omap8250_irq(int irq, void *dev_id)
 			 */
 			cancel_delayed_work(&up->overrun_backoff);
 		}
-		spin_unlock(&port->lock);
+		uart_port_unlock(port);
 
 		delay = msecs_to_jiffies(up->overrun_backoff_time_ms);
 		schedule_delayed_work(&up->overrun_backoff, delay);
 	}
 
-	serial8250_rpm_put(up);
+	pm_runtime_mark_last_busy(port->dev);
+	pm_runtime_put(port->dev);
 
 	return IRQ_RETVAL(ret);
 }
@@ -717,10 +736,10 @@ static int omap_8250_startup(struct uart_port *port)
 	}
 
 	/* Synchronize UART_IER access against the console. */
-	spin_lock_irq(&port->lock);
+	uart_port_lock_irq(port);
 	up->ier = UART_IER_RLSI | UART_IER_RDI;
 	serial_out(up, UART_IER, up->ier);
-	spin_unlock_irq(&port->lock);
+	uart_port_unlock_irq(port);
 
 #ifdef CONFIG_PM
 	up->capabilities |= UART_CAP_RPM;
@@ -733,9 +752,9 @@ static int omap_8250_startup(struct uart_port *port)
 	serial_out(up, UART_OMAP_WER, priv->wer);
 
 	if (up->dma && !(priv->habit & UART_HAS_EFR2)) {
-		spin_lock_irq(&port->lock);
+		uart_port_lock_irq(port);
 		up->dma->rx_dma(up);
-		spin_unlock_irq(&port->lock);
+		uart_port_unlock_irq(port);
 	}
 
 	enable_irq(up->port.irq);
@@ -761,10 +780,10 @@ static void omap_8250_shutdown(struct uart_port *port)
 		serial_out(up, UART_OMAP_EFR2, 0x0);
 
 	/* Synchronize UART_IER access against the console. */
-	spin_lock_irq(&port->lock);
+	uart_port_lock_irq(port);
 	up->ier = 0;
 	serial_out(up, UART_IER, 0);
-	spin_unlock_irq(&port->lock);
+	uart_port_unlock_irq(port);
 	disable_irq_nosync(up->port.irq);
 	dev_pm_clear_wake_irq(port->dev);
 
@@ -789,10 +808,10 @@ static void omap_8250_throttle(struct uart_port *port)
 
 	pm_runtime_get_sync(port->dev);
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	port->ops->stop_rx(port);
 	priv->throttled = true;
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 
 	pm_runtime_mark_last_busy(port->dev);
 	pm_runtime_put_autosuspend(port->dev);
@@ -807,14 +826,14 @@ static void omap_8250_unthrottle(struct uart_port *port)
 	pm_runtime_get_sync(port->dev);
 
 	/* Synchronize UART_IER access against the console. */
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	priv->throttled = false;
 	if (up->dma)
 		up->dma->rx_dma(up);
 	up->ier |= UART_IER_RLSI | UART_IER_RDI;
 	port->read_status_mask |= UART_LSR_DR;
 	serial_out(up, UART_IER, up->ier);
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 
 	pm_runtime_mark_last_busy(port->dev);
 	pm_runtime_put_autosuspend(port->dev);
@@ -958,7 +977,7 @@ static void __dma_rx_complete(void *param)
 	unsigned long flags;
 
 	/* Synchronize UART_IER access against the console. */
-	spin_lock_irqsave(&p->port.lock, flags);
+	uart_port_lock_irqsave(&p->port, &flags);
 
 	/*
 	 * If the tx status is not DMA_COMPLETE, then this is a delayed
@@ -967,7 +986,7 @@ static void __dma_rx_complete(void *param)
 	 */
 	if (dmaengine_tx_status(dma->rxchan, dma->rx_cookie, &state) !=
 			DMA_COMPLETE) {
-		spin_unlock_irqrestore(&p->port.lock, flags);
+		uart_port_unlock_irqrestore(&p->port, flags);
 		return;
 	}
 	__dma_rx_do_complete(p);
@@ -978,7 +997,7 @@ static void __dma_rx_complete(void *param)
 			omap_8250_rx_dma(p);
 	}
 
-	spin_unlock_irqrestore(&p->port.lock, flags);
+	uart_port_unlock_irqrestore(&p->port, flags);
 }
 
 static void omap_8250_rx_dma_flush(struct uart_8250_port *p)
@@ -1083,7 +1102,7 @@ static void omap_8250_dma_tx_complete(void *param)
 	dma_sync_single_for_cpu(dma->txchan->device->dev, dma->tx_addr,
 				UART_XMIT_SIZE, DMA_TO_DEVICE);
 
-	spin_lock_irqsave(&p->port.lock, flags);
+	uart_port_lock_irqsave(&p->port, &flags);
 
 	dma->tx_running = 0;
 
@@ -1112,7 +1131,7 @@ static void omap_8250_dma_tx_complete(void *param)
 		serial8250_set_THRI(p);
 	}
 
-	spin_unlock_irqrestore(&p->port.lock, flags);
+	uart_port_unlock_irqrestore(&p->port, flags);
 }
 
 static int omap_8250_tx_dma(struct uart_8250_port *p)
@@ -1270,15 +1289,12 @@ static int omap_8250_dma_handle_irq(struct uart_port *port)
 	u16 status;
 	u8 iir;
 
-	serial8250_rpm_get(up);
-
 	iir = serial_port_in(port, UART_IIR);
 	if (iir & UART_IIR_NO_INT) {
-		serial8250_rpm_put(up);
 		return IRQ_HANDLED;
 	}
 
-	spin_lock(&port->lock);
+	uart_port_lock(port);
 
 	status = serial_port_in(port, UART_LSR);
 
@@ -1307,7 +1323,6 @@ static int omap_8250_dma_handle_irq(struct uart_port *port)
 
 	uart_unlock_and_check_sysrq(port);
 
-	serial8250_rpm_put(up);
 	return 1;
 }
 
@@ -1505,8 +1520,6 @@ static int omap8250_probe(struct platform_device *pdev)
 	if (!of_get_available_child_count(pdev->dev.of_node))
 		pm_runtime_set_autosuspend_delay(&pdev->dev, -1);
 
-	pm_runtime_irq_safe(&pdev->dev);
-
 	pm_runtime_get_sync(&pdev->dev);
 
 	omap_serial_fill_features_erratas(&up, priv);
@@ -1619,6 +1632,7 @@ static int omap8250_suspend(struct device *dev)
 {
 	struct omap8250_priv *priv = dev_get_drvdata(dev);
 	struct uart_8250_port *up = serial8250_get_port(priv->line);
+	struct generic_pm_domain *genpd = pd_to_genpd(dev->pm_domain);
 	int err = 0;
 
 	serial8250_suspend_port(priv->line);
@@ -1629,8 +1643,19 @@ static int omap8250_suspend(struct device *dev)
 	if (!device_may_wakeup(dev))
 		priv->wer = 0;
 	serial_out(up, UART_OMAP_WER, priv->wer);
-	if (uart_console(&up->port) && console_suspend_enabled)
-		err = pm_runtime_force_suspend(dev);
+	if (uart_console(&up->port)) {
+		if (console_suspend_enabled)
+			err = pm_runtime_force_suspend(dev);
+		else {
+			/*
+			 * The pd shall not be powered-off (no console suspend).
+			 * Make copy of genpd flags before to set it always on.
+			 * The original value is restored during the resume.
+			 */
+			genpd_flags_console = genpd->flags;
+			genpd->flags |= GENPD_FLAG_ALWAYS_ON;
+		}
+	}
 	flush_work(&priv->qos_work);
 
 	return err;
@@ -1640,12 +1665,16 @@ static int omap8250_resume(struct device *dev)
 {
 	struct omap8250_priv *priv = dev_get_drvdata(dev);
 	struct uart_8250_port *up = serial8250_get_port(priv->line);
+	struct generic_pm_domain *genpd = pd_to_genpd(dev->pm_domain);
 	int err;
 
 	if (uart_console(&up->port) && console_suspend_enabled) {
-		err = pm_runtime_force_resume(dev);
-		if (err)
-			return err;
+		if (console_suspend_enabled) {
+			err = pm_runtime_force_resume(dev);
+			if (err)
+				return err;
+		} else
+			genpd->flags = genpd_flags_console;
 	}
 
 	serial8250_resume_port(priv->line);
@@ -1745,6 +1774,7 @@ static int omap8250_runtime_suspend(struct device *dev)
 
 	priv->latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE;
 	schedule_work(&priv->qos_work);
+	atomic_set(&priv->active, 0);
 
 	return 0;
 }
@@ -1754,23 +1784,29 @@ static int omap8250_runtime_resume(struct device *dev)
 	struct omap8250_priv *priv = dev_get_drvdata(dev);
 	struct uart_8250_port *up = NULL;
 
+	/* Did the hardware wake to a device IO interrupt before a wakeirq? */
+	if (atomic_read(&priv->active))
+		return 0;
+
 	if (priv->line >= 0)
 		up = serial8250_get_port(priv->line);
 
 	if (up && omap8250_lost_context(up)) {
-		spin_lock_irq(&up->port.lock);
+		uart_port_lock_irq(&up->port);
 		omap8250_restore_regs(up);
-		spin_unlock_irq(&up->port.lock);
+		uart_port_unlock_irq(&up->port);
 	}
 
 	if (up && up->dma && up->dma->rxchan && !(priv->habit & UART_HAS_EFR2)) {
-		spin_lock_irq(&up->port.lock);
+		uart_port_lock_irq(&up->port);
 		omap_8250_rx_dma(up);
-		spin_unlock_irq(&up->port.lock);
+		uart_port_unlock_irq(&up->port);
 	}
 
+	atomic_set(&priv->active, 1);
 	priv->latency = priv->calc_latency;
 	schedule_work(&priv->qos_work);
+
 	return 0;
 }
 
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index bbd7914ddc..8ccf691935 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -19,6 +19,7 @@
 #include <linux/serial_core.h>
 #include <linux/8250_pci.h>
 #include <linux/bitops.h>
+#include <linux/bitfield.h>
 
 #include <asm/byteorder.h>
 #include <asm/io.h>
@@ -26,6 +27,84 @@
 #include "8250.h"
 #include "8250_pcilib.h"
 
+#define PCI_VENDOR_ID_SBSMODULARIO	0x124B
+#define PCI_SUBVENDOR_ID_SBSMODULARIO	0x124B
+#define PCI_DEVICE_ID_OCTPRO		0x0001
+#define PCI_SUBDEVICE_ID_OCTPRO232	0x0108
+#define PCI_SUBDEVICE_ID_OCTPRO422	0x0208
+#define PCI_SUBDEVICE_ID_POCTAL232	0x0308
+#define PCI_SUBDEVICE_ID_POCTAL422	0x0408
+#define PCI_SUBDEVICE_ID_SIIG_DUAL_00	0x2500
+#define PCI_SUBDEVICE_ID_SIIG_DUAL_30	0x2530
+#define PCI_VENDOR_ID_ADVANTECH		0x13fe
+#define PCI_DEVICE_ID_INTEL_CE4100_UART 0x2e66
+#define PCI_DEVICE_ID_ADVANTECH_PCI1600	0x1600
+#define PCI_DEVICE_ID_ADVANTECH_PCI1600_1611	0x1611
+#define PCI_DEVICE_ID_ADVANTECH_PCI3620	0x3620
+#define PCI_DEVICE_ID_ADVANTECH_PCI3618	0x3618
+#define PCI_DEVICE_ID_ADVANTECH_PCIf618	0xf618
+#define PCI_DEVICE_ID_TITAN_200I	0x8028
+#define PCI_DEVICE_ID_TITAN_400I	0x8048
+#define PCI_DEVICE_ID_TITAN_800I	0x8088
+#define PCI_DEVICE_ID_TITAN_800EH	0xA007
+#define PCI_DEVICE_ID_TITAN_800EHB	0xA008
+#define PCI_DEVICE_ID_TITAN_400EH	0xA009
+#define PCI_DEVICE_ID_TITAN_100E	0xA010
+#define PCI_DEVICE_ID_TITAN_200E	0xA012
+#define PCI_DEVICE_ID_TITAN_400E	0xA013
+#define PCI_DEVICE_ID_TITAN_800E	0xA014
+#define PCI_DEVICE_ID_TITAN_200EI	0xA016
+#define PCI_DEVICE_ID_TITAN_200EISI	0xA017
+#define PCI_DEVICE_ID_TITAN_200V3	0xA306
+#define PCI_DEVICE_ID_TITAN_400V3	0xA310
+#define PCI_DEVICE_ID_TITAN_410V3	0xA312
+#define PCI_DEVICE_ID_TITAN_800V3	0xA314
+#define PCI_DEVICE_ID_TITAN_800V3B	0xA315
+#define PCI_DEVICE_ID_OXSEMI_16PCI958	0x9538
+#define PCIE_DEVICE_ID_NEO_2_OX_IBM	0x00F6
+#define PCI_DEVICE_ID_PLX_CRONYX_OMEGA	0xc001
+#define PCI_DEVICE_ID_INTEL_PATSBURG_KT 0x1d3d
+#define PCI_VENDOR_ID_WCH		0x4348
+#define PCI_DEVICE_ID_WCH_CH352_2S	0x3253
+#define PCI_DEVICE_ID_WCH_CH353_4S	0x3453
+#define PCI_DEVICE_ID_WCH_CH353_2S1PF	0x5046
+#define PCI_DEVICE_ID_WCH_CH353_1S1P	0x5053
+#define PCI_DEVICE_ID_WCH_CH353_2S1P	0x7053
+#define PCI_DEVICE_ID_WCH_CH355_4S	0x7173
+#define PCI_VENDOR_ID_AGESTAR		0x5372
+#define PCI_DEVICE_ID_AGESTAR_9375	0x6872
+#define PCI_DEVICE_ID_BROADCOM_TRUMANAGE 0x160a
+#define PCI_DEVICE_ID_AMCC_ADDIDATA_APCI7800 0x818e
+
+#define PCIE_VENDOR_ID_WCH		0x1c00
+#define PCIE_DEVICE_ID_WCH_CH382_2S1P	0x3250
+#define PCIE_DEVICE_ID_WCH_CH384_4S	0x3470
+#define PCIE_DEVICE_ID_WCH_CH384_8S	0x3853
+#define PCIE_DEVICE_ID_WCH_CH382_2S	0x3253
+
+#define PCI_DEVICE_ID_MOXA_CP102E	0x1024
+#define PCI_DEVICE_ID_MOXA_CP102EL	0x1025
+#define PCI_DEVICE_ID_MOXA_CP102N	0x1027
+#define PCI_DEVICE_ID_MOXA_CP104EL_A	0x1045
+#define PCI_DEVICE_ID_MOXA_CP104N	0x1046
+#define PCI_DEVICE_ID_MOXA_CP112N	0x1121
+#define PCI_DEVICE_ID_MOXA_CP114EL	0x1144
+#define PCI_DEVICE_ID_MOXA_CP114N	0x1145
+#define PCI_DEVICE_ID_MOXA_CP116E_A_A	0x1160
+#define PCI_DEVICE_ID_MOXA_CP116E_A_B	0x1161
+#define PCI_DEVICE_ID_MOXA_CP118EL_A	0x1182
+#define PCI_DEVICE_ID_MOXA_CP118E_A_I	0x1183
+#define PCI_DEVICE_ID_MOXA_CP132EL	0x1322
+#define PCI_DEVICE_ID_MOXA_CP132N	0x1323
+#define PCI_DEVICE_ID_MOXA_CP134EL_A	0x1342
+#define PCI_DEVICE_ID_MOXA_CP134N	0x1343
+#define PCI_DEVICE_ID_MOXA_CP138E_A	0x1381
+#define PCI_DEVICE_ID_MOXA_CP168EL_A	0x1683
+
+/* Unknown vendors/cards - this should not be in linux/pci_ids.h */
+#define PCI_SUBDEVICE_ID_UNKNOWN_0x1584	0x1584
+#define PCI_SUBDEVICE_ID_UNKNOWN_0x1588	0x1588
+
 /*
  * init function returns:
  *  > 0 - number of ports
@@ -1887,6 +1966,104 @@ pci_sunix_setup(struct serial_private *priv,
 	return setup_port(priv, port, bar, offset, 0);
 }
 
+#define MOXA_PUART_GPIO_EN	0x09
+#define MOXA_PUART_GPIO_OUT	0x0A
+
+#define MOXA_GPIO_PIN2	BIT(2)
+
+#define MOXA_RS232	0x00
+#define MOXA_RS422	0x01
+#define MOXA_RS485_4W	0x0B
+#define MOXA_RS485_2W	0x0F
+#define MOXA_UIR_OFFSET	0x04
+#define MOXA_EVEN_RS_MASK	GENMASK(3, 0)
+#define MOXA_ODD_RS_MASK	GENMASK(7, 4)
+
+enum {
+	MOXA_SUPP_RS232 = BIT(0),
+	MOXA_SUPP_RS422 = BIT(1),
+	MOXA_SUPP_RS485 = BIT(2),
+};
+
+static bool pci_moxa_is_mini_pcie(unsigned short device)
+{
+	if (device == PCI_DEVICE_ID_MOXA_CP102N	||
+	    device == PCI_DEVICE_ID_MOXA_CP104N	||
+	    device == PCI_DEVICE_ID_MOXA_CP112N	||
+	    device == PCI_DEVICE_ID_MOXA_CP114N ||
+	    device == PCI_DEVICE_ID_MOXA_CP132N ||
+	    device == PCI_DEVICE_ID_MOXA_CP134N)
+		return true;
+
+	return false;
+}
+
+static unsigned int pci_moxa_supported_rs(struct pci_dev *dev)
+{
+	switch (dev->device & 0x0F00) {
+	case 0x0000:
+	case 0x0600:
+		return MOXA_SUPP_RS232;
+	case 0x0100:
+		return MOXA_SUPP_RS232 | MOXA_SUPP_RS422 | MOXA_SUPP_RS485;
+	case 0x0300:
+		return MOXA_SUPP_RS422 | MOXA_SUPP_RS485;
+	}
+	return 0;
+}
+
+static int pci_moxa_set_interface(const struct pci_dev *dev,
+				  unsigned int port_idx,
+				  u8 mode)
+{
+	resource_size_t iobar_addr = pci_resource_start(dev, 2);
+	resource_size_t UIR_addr = iobar_addr + MOXA_UIR_OFFSET + port_idx / 2;
+	u8 val;
+
+	val = inb(UIR_addr);
+
+	if (port_idx % 2) {
+		val &= ~MOXA_ODD_RS_MASK;
+		val |= FIELD_PREP(MOXA_ODD_RS_MASK, mode);
+	} else {
+		val &= ~MOXA_EVEN_RS_MASK;
+		val |= FIELD_PREP(MOXA_EVEN_RS_MASK, mode);
+	}
+	outb(val, UIR_addr);
+
+	return 0;
+}
+
+static int pci_moxa_init(struct pci_dev *dev)
+{
+	unsigned short device = dev->device;
+	resource_size_t iobar_addr = pci_resource_start(dev, 2);
+	unsigned int num_ports = (device & 0x00F0) >> 4, i;
+	u8 val;
+
+	if (!(pci_moxa_supported_rs(dev) & MOXA_SUPP_RS232)) {
+		for (i = 0; i < num_ports; ++i)
+			pci_moxa_set_interface(dev, i, MOXA_RS422);
+	}
+
+	/*
+	 * Enable hardware buffer to prevent break signal output when system boots up.
+	 * This hardware buffer is only supported on Mini PCIe series.
+	 */
+	if (pci_moxa_is_mini_pcie(device)) {
+		/* Set GPIO direction */
+		val = inb(iobar_addr + MOXA_PUART_GPIO_EN);
+		val |= MOXA_GPIO_PIN2;
+		outb(val, iobar_addr + MOXA_PUART_GPIO_EN);
+		/* Enable low GPIO */
+		val = inb(iobar_addr + MOXA_PUART_GPIO_OUT);
+		val &= ~MOXA_GPIO_PIN2;
+		outb(val, iobar_addr + MOXA_PUART_GPIO_OUT);
+	}
+
+	return num_ports;
+}
+
 static int
 pci_moxa_setup(struct serial_private *priv,
 		const struct pciserial_board *board,
@@ -1903,78 +2080,6 @@ pci_moxa_setup(struct serial_private *priv,
 	return setup_port(priv, port, bar, offset, 0);
 }
 
-#define PCI_VENDOR_ID_SBSMODULARIO	0x124B
-#define PCI_SUBVENDOR_ID_SBSMODULARIO	0x124B
-#define PCI_DEVICE_ID_OCTPRO		0x0001
-#define PCI_SUBDEVICE_ID_OCTPRO232	0x0108
-#define PCI_SUBDEVICE_ID_OCTPRO422	0x0208
-#define PCI_SUBDEVICE_ID_POCTAL232	0x0308
-#define PCI_SUBDEVICE_ID_POCTAL422	0x0408
-#define PCI_SUBDEVICE_ID_SIIG_DUAL_00	0x2500
-#define PCI_SUBDEVICE_ID_SIIG_DUAL_30	0x2530
-#define PCI_VENDOR_ID_ADVANTECH		0x13fe
-#define PCI_DEVICE_ID_INTEL_CE4100_UART 0x2e66
-#define PCI_DEVICE_ID_ADVANTECH_PCI1600	0x1600
-#define PCI_DEVICE_ID_ADVANTECH_PCI1600_1611	0x1611
-#define PCI_DEVICE_ID_ADVANTECH_PCI3620	0x3620
-#define PCI_DEVICE_ID_ADVANTECH_PCI3618	0x3618
-#define PCI_DEVICE_ID_ADVANTECH_PCIf618	0xf618
-#define PCI_DEVICE_ID_TITAN_200I	0x8028
-#define PCI_DEVICE_ID_TITAN_400I	0x8048
-#define PCI_DEVICE_ID_TITAN_800I	0x8088
-#define PCI_DEVICE_ID_TITAN_800EH	0xA007
-#define PCI_DEVICE_ID_TITAN_800EHB	0xA008
-#define PCI_DEVICE_ID_TITAN_400EH	0xA009
-#define PCI_DEVICE_ID_TITAN_100E	0xA010
-#define PCI_DEVICE_ID_TITAN_200E	0xA012
-#define PCI_DEVICE_ID_TITAN_400E	0xA013
-#define PCI_DEVICE_ID_TITAN_800E	0xA014
-#define PCI_DEVICE_ID_TITAN_200EI	0xA016
-#define PCI_DEVICE_ID_TITAN_200EISI	0xA017
-#define PCI_DEVICE_ID_TITAN_200V3	0xA306
-#define PCI_DEVICE_ID_TITAN_400V3	0xA310
-#define PCI_DEVICE_ID_TITAN_410V3	0xA312
-#define PCI_DEVICE_ID_TITAN_800V3	0xA314
-#define PCI_DEVICE_ID_TITAN_800V3B	0xA315
-#define PCI_DEVICE_ID_OXSEMI_16PCI958	0x9538
-#define PCIE_DEVICE_ID_NEO_2_OX_IBM	0x00F6
-#define PCI_DEVICE_ID_PLX_CRONYX_OMEGA	0xc001
-#define PCI_DEVICE_ID_INTEL_PATSBURG_KT 0x1d3d
-#define PCI_VENDOR_ID_WCH		0x4348
-#define PCI_DEVICE_ID_WCH_CH352_2S	0x3253
-#define PCI_DEVICE_ID_WCH_CH353_4S	0x3453
-#define PCI_DEVICE_ID_WCH_CH353_2S1PF	0x5046
-#define PCI_DEVICE_ID_WCH_CH353_1S1P	0x5053
-#define PCI_DEVICE_ID_WCH_CH353_2S1P	0x7053
-#define PCI_DEVICE_ID_WCH_CH355_4S	0x7173
-#define PCI_VENDOR_ID_AGESTAR		0x5372
-#define PCI_DEVICE_ID_AGESTAR_9375	0x6872
-#define PCI_DEVICE_ID_BROADCOM_TRUMANAGE 0x160a
-#define PCI_DEVICE_ID_AMCC_ADDIDATA_APCI7800 0x818e
-
-#define PCIE_VENDOR_ID_WCH		0x1c00
-#define PCIE_DEVICE_ID_WCH_CH382_2S1P	0x3250
-#define PCIE_DEVICE_ID_WCH_CH384_4S	0x3470
-#define PCIE_DEVICE_ID_WCH_CH384_8S	0x3853
-#define PCIE_DEVICE_ID_WCH_CH382_2S	0x3253
-
-#define	PCI_DEVICE_ID_MOXA_CP102E	0x1024
-#define	PCI_DEVICE_ID_MOXA_CP102EL	0x1025
-#define	PCI_DEVICE_ID_MOXA_CP104EL_A	0x1045
-#define	PCI_DEVICE_ID_MOXA_CP114EL	0x1144
-#define	PCI_DEVICE_ID_MOXA_CP116E_A_A	0x1160
-#define	PCI_DEVICE_ID_MOXA_CP116E_A_B	0x1161
-#define	PCI_DEVICE_ID_MOXA_CP118EL_A	0x1182
-#define	PCI_DEVICE_ID_MOXA_CP118E_A_I	0x1183
-#define	PCI_DEVICE_ID_MOXA_CP132EL	0x1322
-#define	PCI_DEVICE_ID_MOXA_CP134EL_A	0x1342
-#define	PCI_DEVICE_ID_MOXA_CP138E_A	0x1381
-#define	PCI_DEVICE_ID_MOXA_CP168EL_A	0x1683
-
-/* Unknown vendors/cards - this should not be in linux/pci_ids.h */
-#define PCI_SUBDEVICE_ID_UNKNOWN_0x1584	0x1584
-#define PCI_SUBDEVICE_ID_UNKNOWN_0x1588	0x1588
-
 /*
  * Master list of serial port init/setup/exit quirks.
  * This does not describe the general nature of the port.
@@ -2782,6 +2887,7 @@ static struct pci_serial_quirk pci_serial_quirks[] = {
 		.device		= PCI_ANY_ID,
 		.subvendor	= PCI_ANY_ID,
 		.subdevice	= PCI_ANY_ID,
+		.init		= pci_moxa_init,
 		.setup		= pci_moxa_setup,
 	},
 	{
@@ -3001,9 +3107,9 @@ enum pci_board_num_t {
 	pbn_titan_2_4000000,
 	pbn_titan_4_4000000,
 	pbn_titan_8_4000000,
-	pbn_moxa8250_2p,
-	pbn_moxa8250_4p,
-	pbn_moxa8250_8p,
+	pbn_moxa_2,
+	pbn_moxa_4,
+	pbn_moxa_8,
 };
 
 /*
@@ -3775,19 +3881,19 @@ static struct pciserial_board pci_boards[] = {
 		.uart_offset	= 0x200,
 		.first_offset	= 0x1000,
 	},
-	[pbn_moxa8250_2p] = {
+	[pbn_moxa_2] = {
 		.flags		= FL_BASE1,
 		.num_ports      = 2,
 		.base_baud      = 921600,
 		.uart_offset	= 0x200,
 	},
-	[pbn_moxa8250_4p] = {
+	[pbn_moxa_4] = {
 		.flags		= FL_BASE1,
 		.num_ports      = 4,
 		.base_baud      = 921600,
 		.uart_offset	= 0x200,
 	},
-	[pbn_moxa8250_8p] = {
+	[pbn_moxa_8] = {
 		.flags		= FL_BASE1,
 		.num_ports      = 8,
 		.base_baud      = 921600,
@@ -5070,7 +5176,7 @@ static const struct pci_device_id serial_pci_tbl[] = {
 	 * IntaShield IS-200
 	 */
 	{	PCI_VENDOR_ID_INTASHIELD, PCI_DEVICE_ID_INTASHIELD_IS200,
-		PCI_ANY_ID, PCI_ANY_ID, 0, 0,	/* 135a.0811 */
+		PCI_ANY_ID, PCI_ANY_ID, 0, 0,	/* 135a.0d80 */
 		pbn_b2_2_115200 },
 	/*
 	 * IntaShield IS-400
@@ -5443,7 +5549,7 @@ static const struct pci_device_id serial_pci_tbl[] = {
 		0, 0,
 		pbn_oxsemi_4_15625000 },
 	/*
-	 * Brainboxes PX-846
+	 * Brainboxes PX-835/PX-846
 	 */
 	{	PCI_VENDOR_ID_INTASHIELD, 0x4008,
 		PCI_ANY_ID, PCI_ANY_ID,
@@ -5662,42 +5768,24 @@ static const struct pci_device_id serial_pci_tbl[] = {
 	/*
 	 * MOXA
 	 */
-	{	PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102E,
-		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
-		pbn_moxa8250_2p },
-	{	PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102EL,
-		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
-		pbn_moxa8250_2p },
-	{	PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104EL_A,
-		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
-		pbn_moxa8250_4p },
-	{	PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP114EL,
-		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
-		pbn_moxa8250_4p },
-	{	PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP116E_A_A,
-		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
-		pbn_moxa8250_8p },
-	{	PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP116E_A_B,
-		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
-		pbn_moxa8250_8p },
-	{	PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP118EL_A,
-		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
-		pbn_moxa8250_8p },
-	{	PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP118E_A_I,
-		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
-		pbn_moxa8250_8p },
-	{	PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP132EL,
-		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
-		pbn_moxa8250_2p },
-	{	PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP134EL_A,
-		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
-		pbn_moxa8250_4p },
-	{	PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP138E_A,
-		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
-		pbn_moxa8250_8p },
-	{	PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP168EL_A,
-		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
-		pbn_moxa8250_8p },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102E),	    pbn_moxa_2 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102EL),    pbn_moxa_2 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102N),	    pbn_moxa_2 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104EL_A),  pbn_moxa_4 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104N),	    pbn_moxa_4 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP112N),	    pbn_moxa_2 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP114EL),    pbn_moxa_4 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP114N),	    pbn_moxa_4 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP116E_A_A), pbn_moxa_8 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP116E_A_B), pbn_moxa_8 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP118EL_A),  pbn_moxa_8 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP118E_A_I), pbn_moxa_8 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP132EL),    pbn_moxa_2 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP132N),     pbn_moxa_2 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP134EL_A),  pbn_moxa_4 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP134N),	    pbn_moxa_4 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP138E_A),   pbn_moxa_8 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP168EL_A),  pbn_moxa_8 },
 
 	/*
 	* ADDI-DATA GmbH communication cards <info@addi-data.com>
diff --git a/drivers/tty/serial/8250/8250_pci1xxxx.c b/drivers/tty/serial/8250/8250_pci1xxxx.c
index a3b25779d9..9f9e219819 100644
--- a/drivers/tty/serial/8250/8250_pci1xxxx.c
+++ b/drivers/tty/serial/8250/8250_pci1xxxx.c
@@ -107,7 +107,7 @@ static const int logical_to_physical_port_idx[][MAX_PORTS] = {
 struct pci1xxxx_8250 {
 	unsigned int nr;
 	void __iomem *membase;
-	int line[];
+	int line[] __counted_by(nr);
 };
 
 static int pci1xxxx_get_num_ports(struct pci_dev *dev)
@@ -225,10 +225,10 @@ static bool pci1xxxx_port_suspend(int line)
 	if (port->suspended == 0 && port->dev) {
 		wakeup_mask = readb(up->port.membase + UART_WAKE_MASK_REG);
 
-		spin_lock_irqsave(&port->lock, flags);
+		uart_port_lock_irqsave(port, &flags);
 		port->mctrl &= ~TIOCM_OUT2;
 		port->ops->set_mctrl(port, port->mctrl);
-		spin_unlock_irqrestore(&port->lock, flags);
+		uart_port_unlock_irqrestore(port, flags);
 
 		ret = (wakeup_mask & UART_WAKE_SRCS) != UART_WAKE_SRCS;
 	}
@@ -251,10 +251,10 @@ static void pci1xxxx_port_resume(int line)
 	writeb(UART_WAKE_SRCS, port->membase + UART_WAKE_REG);
 
 	if (port->suspended == 0) {
-		spin_lock_irqsave(&port->lock, flags);
+		uart_port_lock_irqsave(port, &flags);
 		port->mctrl |= TIOCM_OUT2;
 		port->ops->set_mctrl(port, port->mctrl);
-		spin_unlock_irqrestore(&port->lock, flags);
+		uart_port_unlock_irqrestore(port, flags);
 	}
 	mutex_unlock(&tport->mutex);
 }
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index 141627370a..8ca061d3bb 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -170,13 +170,6 @@ static const struct serial8250_config uart_config[] = {
 		.fcr		= UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10,
 		.flags		= UART_CAP_FIFO,
 	},
-	[PORT_AR7] = {
-		.name		= "AR7",
-		.fifo_size	= 16,
-		.tx_loadsz	= 16,
-		.fcr		= UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_00,
-		.flags		= UART_CAP_FIFO /* | UART_CAP_AFE */,
-	},
 	[PORT_U6_16550A] = {
 		.name		= "U6_16550A",
 		.fifo_size	= 64,
@@ -689,7 +682,7 @@ static void serial8250_set_sleep(struct uart_8250_port *p, int sleep)
 
 	if (p->capabilities & UART_CAP_SLEEP) {
 		/* Synchronize UART_IER access against the console. */
-		spin_lock_irq(&p->port.lock);
+		uart_port_lock_irq(&p->port);
 		if (p->capabilities & UART_CAP_EFR) {
 			lcr = serial_in(p, UART_LCR);
 			efr = serial_in(p, UART_EFR);
@@ -703,7 +696,7 @@ static void serial8250_set_sleep(struct uart_8250_port *p, int sleep)
 			serial_out(p, UART_EFR, efr);
 			serial_out(p, UART_LCR, lcr);
 		}
-		spin_unlock_irq(&p->port.lock);
+		uart_port_unlock_irq(&p->port);
 	}
 
 	serial8250_rpm_put(p);
@@ -746,9 +739,9 @@ static void enable_rsa(struct uart_8250_port *up)
 {
 	if (up->port.type == PORT_RSA) {
 		if (up->port.uartclk != SERIAL_RSA_BAUD_BASE * 16) {
-			spin_lock_irq(&up->port.lock);
+			uart_port_lock_irq(&up->port);
 			__enable_rsa(up);
-			spin_unlock_irq(&up->port.lock);
+			uart_port_unlock_irq(&up->port);
 		}
 		if (up->port.uartclk == SERIAL_RSA_BAUD_BASE * 16)
 			serial_out(up, UART_RSA_FRR, 0);
@@ -768,7 +761,7 @@ static void disable_rsa(struct uart_8250_port *up)
 
 	if (up->port.type == PORT_RSA &&
 	    up->port.uartclk == SERIAL_RSA_BAUD_BASE * 16) {
-		spin_lock_irq(&up->port.lock);
+		uart_port_lock_irq(&up->port);
 
 		mode = serial_in(up, UART_RSA_MSR);
 		result = !(mode & UART_RSA_MSR_FIFO);
@@ -781,7 +774,7 @@ static void disable_rsa(struct uart_8250_port *up)
 
 		if (result)
 			up->port.uartclk = SERIAL_RSA_BAUD_BASE_LO * 16;
-		spin_unlock_irq(&up->port.lock);
+		uart_port_unlock_irq(&up->port);
 	}
 }
 #endif /* CONFIG_SERIAL_8250_RSA */
@@ -1008,12 +1001,11 @@ static void autoconfig_16550a(struct uart_8250_port *up)
 			serial_out(up, UART_LCR, 0);
 			serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO |
 				   UART_FCR7_64BYTE);
-			status1 = serial_in(up, UART_IIR) & (UART_IIR_64BYTE_FIFO |
-							     UART_IIR_FIFO_ENABLED);
+			status1 = serial_in(up, UART_IIR) & UART_IIR_FIFO_ENABLED_16750;
 			serial_out(up, UART_FCR, 0);
 			serial_out(up, UART_LCR, 0);
 
-			if (status1 == (UART_IIR_64BYTE_FIFO | UART_IIR_FIFO_ENABLED))
+			if (status1 == UART_IIR_FIFO_ENABLED_16750)
 				up->port.type = PORT_16550A_FSL64;
 			else
 				DEBUG_AUTOCONF("Motorola 8xxx DUART ");
@@ -1081,12 +1073,12 @@ static void autoconfig_16550a(struct uart_8250_port *up)
 	 */
 	serial_out(up, UART_LCR, 0);
 	serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE);
-	status1 = serial_in(up, UART_IIR) & (UART_IIR_64BYTE_FIFO | UART_IIR_FIFO_ENABLED);
+	status1 = serial_in(up, UART_IIR) & UART_IIR_FIFO_ENABLED_16750;
 	serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO);
 
 	serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
 	serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE);
-	status2 = serial_in(up, UART_IIR) & (UART_IIR_64BYTE_FIFO | UART_IIR_FIFO_ENABLED);
+	status2 = serial_in(up, UART_IIR) & UART_IIR_FIFO_ENABLED_16750;
 	serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO);
 
 	serial_out(up, UART_LCR, 0);
@@ -1094,7 +1086,7 @@ static void autoconfig_16550a(struct uart_8250_port *up)
 	DEBUG_AUTOCONF("iir1=%d iir2=%d ", status1, status2);
 
 	if (status1 == UART_IIR_FIFO_ENABLED_16550A &&
-	    status2 == (UART_IIR_64BYTE_FIFO | UART_IIR_FIFO_ENABLED_16550A)) {
+	    status2 == UART_IIR_FIFO_ENABLED_16750) {
 		up->port.type = PORT_16750;
 		up->capabilities |= UART_CAP_AFE | UART_CAP_SLEEP;
 		return;
@@ -1172,7 +1164,7 @@ static void autoconfig(struct uart_8250_port *up)
 	 *
 	 * Synchronize UART_IER access against the console.
 	 */
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 
 	up->capabilities = 0;
 	up->bugs = 0;
@@ -1211,7 +1203,7 @@ static void autoconfig(struct uart_8250_port *up)
 			/*
 			 * We failed; there's nothing here
 			 */
-			spin_unlock_irqrestore(&port->lock, flags);
+			uart_port_unlock_irqrestore(port, flags);
 			DEBUG_AUTOCONF("IER test failed (%02x, %02x) ",
 				       scratch2, scratch3);
 			goto out;
@@ -1235,7 +1227,7 @@ static void autoconfig(struct uart_8250_port *up)
 		status1 = serial_in(up, UART_MSR) & UART_MSR_STATUS_BITS;
 		serial8250_out_MCR(up, save_mcr);
 		if (status1 != (UART_MSR_DCD | UART_MSR_CTS)) {
-			spin_unlock_irqrestore(&port->lock, flags);
+			uart_port_unlock_irqrestore(port, flags);
 			DEBUG_AUTOCONF("LOOP test failed (%02x) ",
 				       status1);
 			goto out;
@@ -1304,7 +1296,7 @@ static void autoconfig(struct uart_8250_port *up)
 	serial8250_clear_IER(up);
 
 out_unlock:
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 
 	/*
 	 * Check if the device is a Fintek F81216A
@@ -1344,9 +1336,9 @@ static void autoconfig_irq(struct uart_8250_port *up)
 	probe_irq_off(probe_irq_on());
 	save_mcr = serial8250_in_MCR(up);
 	/* Synchronize UART_IER access against the console. */
-	spin_lock_irq(&port->lock);
+	uart_port_lock_irq(port);
 	save_ier = serial_in(up, UART_IER);
-	spin_unlock_irq(&port->lock);
+	uart_port_unlock_irq(port);
 	serial8250_out_MCR(up, UART_MCR_OUT1 | UART_MCR_OUT2);
 
 	irqs = probe_irq_on();
@@ -1359,9 +1351,9 @@ static void autoconfig_irq(struct uart_8250_port *up)
 			UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2);
 	}
 	/* Synchronize UART_IER access against the console. */
-	spin_lock_irq(&port->lock);
+	uart_port_lock_irq(port);
 	serial_out(up, UART_IER, UART_IER_ALL_INTR);
-	spin_unlock_irq(&port->lock);
+	uart_port_unlock_irq(port);
 	serial_in(up, UART_LSR);
 	serial_in(up, UART_RX);
 	serial_in(up, UART_IIR);
@@ -1372,9 +1364,9 @@ static void autoconfig_irq(struct uart_8250_port *up)
 
 	serial8250_out_MCR(up, save_mcr);
 	/* Synchronize UART_IER access against the console. */
-	spin_lock_irq(&port->lock);
+	uart_port_lock_irq(port);
 	serial_out(up, UART_IER, save_ier);
-	spin_unlock_irq(&port->lock);
+	uart_port_unlock_irq(port);
 
 	if (port->flags & UPF_FOURPORT)
 		outb_p(save_ICP, ICP);
@@ -1442,13 +1434,13 @@ static enum hrtimer_restart serial8250_em485_handle_stop_tx(struct hrtimer *t)
 	unsigned long flags;
 
 	serial8250_rpm_get(p);
-	spin_lock_irqsave(&p->port.lock, flags);
+	uart_port_lock_irqsave(&p->port, &flags);
 	if (em485->active_timer == &em485->stop_tx_timer) {
 		p->rs485_stop_tx(p);
 		em485->active_timer = NULL;
 		em485->tx_stopped = true;
 	}
-	spin_unlock_irqrestore(&p->port.lock, flags);
+	uart_port_unlock_irqrestore(&p->port, flags);
 	serial8250_rpm_put(p);
 
 	return HRTIMER_NORESTART;
@@ -1630,12 +1622,12 @@ static enum hrtimer_restart serial8250_em485_handle_start_tx(struct hrtimer *t)
 	struct uart_8250_port *p = em485->port;
 	unsigned long flags;
 
-	spin_lock_irqsave(&p->port.lock, flags);
+	uart_port_lock_irqsave(&p->port, &flags);
 	if (em485->active_timer == &em485->start_tx_timer) {
 		__start_tx(&p->port);
 		em485->active_timer = NULL;
 	}
-	spin_unlock_irqrestore(&p->port.lock, flags);
+	uart_port_unlock_irqrestore(&p->port, flags);
 
 	return HRTIMER_NORESTART;
 }
@@ -1918,7 +1910,7 @@ int serial8250_handle_irq(struct uart_port *port, unsigned int iir)
 	if (iir & UART_IIR_NO_INT)
 		return 0;
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 
 	status = serial_lsr_in(up);
 
@@ -1988,9 +1980,9 @@ static int serial8250_tx_threshold_handle_irq(struct uart_port *port)
 	if ((iir & UART_IIR_ID) == UART_IIR_THRI) {
 		struct uart_8250_port *up = up_to_u8250p(port);
 
-		spin_lock_irqsave(&port->lock, flags);
+		uart_port_lock_irqsave(port, &flags);
 		serial8250_tx_chars(up);
-		spin_unlock_irqrestore(&port->lock, flags);
+		uart_port_unlock_irqrestore(port, flags);
 	}
 
 	iir = serial_port_in(port, UART_IIR);
@@ -2005,10 +1997,10 @@ static unsigned int serial8250_tx_empty(struct uart_port *port)
 
 	serial8250_rpm_get(up);
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	if (!serial8250_tx_dma_running(up) && uart_lsr_tx_empty(serial_lsr_in(up)))
 		result = TIOCSER_TEMT;
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 
 	serial8250_rpm_put(up);
 
@@ -2070,13 +2062,13 @@ static void serial8250_break_ctl(struct uart_port *port, int break_state)
 	unsigned long flags;
 
 	serial8250_rpm_get(up);
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	if (break_state == -1)
 		up->lcr |= UART_LCR_SBC;
 	else
 		up->lcr &= ~UART_LCR_SBC;
 	serial_port_out(port, UART_LCR, up->lcr);
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 	serial8250_rpm_put(up);
 }
 
@@ -2211,7 +2203,7 @@ int serial8250_do_startup(struct uart_port *port)
 		 *
 		 * Synchronize UART_IER access against the console.
 		 */
-		spin_lock_irqsave(&port->lock, flags);
+		uart_port_lock_irqsave(port, &flags);
 		up->acr = 0;
 		serial_port_out(port, UART_LCR, UART_LCR_CONF_MODE_B);
 		serial_port_out(port, UART_EFR, UART_EFR_ECB);
@@ -2221,7 +2213,7 @@ int serial8250_do_startup(struct uart_port *port)
 		serial_port_out(port, UART_LCR, UART_LCR_CONF_MODE_B);
 		serial_port_out(port, UART_EFR, UART_EFR_ECB);
 		serial_port_out(port, UART_LCR, 0);
-		spin_unlock_irqrestore(&port->lock, flags);
+		uart_port_unlock_irqrestore(port, flags);
 	}
 
 	if (port->type == PORT_DA830) {
@@ -2230,10 +2222,10 @@ int serial8250_do_startup(struct uart_port *port)
 		 *
 		 * Synchronize UART_IER access against the console.
 		 */
-		spin_lock_irqsave(&port->lock, flags);
+		uart_port_lock_irqsave(port, &flags);
 		serial_port_out(port, UART_IER, 0);
 		serial_port_out(port, UART_DA830_PWREMU_MGMT, 0);
-		spin_unlock_irqrestore(&port->lock, flags);
+		uart_port_unlock_irqrestore(port, flags);
 		mdelay(10);
 
 		/* Enable Tx, Rx and free run mode */
@@ -2347,7 +2339,7 @@ int serial8250_do_startup(struct uart_port *port)
 		 *
 		 * Synchronize UART_IER access against the console.
 		 */
-		spin_lock_irqsave(&port->lock, flags);
+		uart_port_lock_irqsave(port, &flags);
 
 		wait_for_xmitr(up, UART_LSR_THRE);
 		serial_port_out_sync(port, UART_IER, UART_IER_THRI);
@@ -2359,7 +2351,7 @@ int serial8250_do_startup(struct uart_port *port)
 		iir = serial_port_in(port, UART_IIR);
 		serial_port_out(port, UART_IER, 0);
 
-		spin_unlock_irqrestore(&port->lock, flags);
+		uart_port_unlock_irqrestore(port, flags);
 
 		if (port->irqflags & IRQF_SHARED)
 			enable_irq(port->irq);
@@ -2382,7 +2374,7 @@ int serial8250_do_startup(struct uart_port *port)
 	 */
 	serial_port_out(port, UART_LCR, UART_LCR_WLEN8);
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	if (up->port.flags & UPF_FOURPORT) {
 		if (!up->port.irq)
 			up->port.mctrl |= TIOCM_OUT1;
@@ -2428,7 +2420,7 @@ int serial8250_do_startup(struct uart_port *port)
 	}
 
 dont_test_tx_en:
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 
 	/*
 	 * Clear the interrupt registers again for luck, and clear the
@@ -2499,17 +2491,17 @@ void serial8250_do_shutdown(struct uart_port *port)
 	 *
 	 * Synchronize UART_IER access against the console.
 	 */
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	up->ier = 0;
 	serial_port_out(port, UART_IER, 0);
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 
 	synchronize_irq(port->irq);
 
 	if (up->dma)
 		serial8250_release_dma(up);
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	if (port->flags & UPF_FOURPORT) {
 		/* reset interrupts on the AST Fourport board */
 		inb((port->iobase & 0xfe0) | 0x1f);
@@ -2518,7 +2510,7 @@ void serial8250_do_shutdown(struct uart_port *port)
 		port->mctrl &= ~TIOCM_OUT2;
 
 	serial8250_set_mctrl(port, port->mctrl);
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 
 	/*
 	 * Disable break condition and FIFOs
@@ -2754,14 +2746,14 @@ void serial8250_update_uartclk(struct uart_port *port, unsigned int uartclk)
 	quot = serial8250_get_divisor(port, baud, &frac);
 
 	serial8250_rpm_get(up);
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 
 	uart_update_timeout(port, termios->c_cflag, baud);
 
 	serial8250_set_divisor(port, baud, quot, frac);
 	serial_port_out(port, UART_LCR, up->lcr);
 
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 	serial8250_rpm_put(up);
 
 out_unlock:
@@ -2798,7 +2790,7 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
 	 * Synchronize UART_IER access against the console.
 	 */
 	serial8250_rpm_get(up);
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 
 	up->lcr = cval;					/* Save computed LCR */
 
@@ -2901,7 +2893,7 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
 		serial_port_out(port, UART_FCR, up->fcr);	/* set fcr */
 	}
 	serial8250_set_mctrl(port, port->mctrl);
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 	serial8250_rpm_put(up);
 
 	/* Don't rewrite B0 */
@@ -2924,15 +2916,15 @@ void serial8250_do_set_ldisc(struct uart_port *port, struct ktermios *termios)
 {
 	if (termios->c_line == N_PPS) {
 		port->flags |= UPF_HARDPPS_CD;
-		spin_lock_irq(&port->lock);
+		uart_port_lock_irq(port);
 		serial8250_enable_ms(port);
-		spin_unlock_irq(&port->lock);
+		uart_port_unlock_irq(port);
 	} else {
 		port->flags &= ~UPF_HARDPPS_CD;
 		if (!UART_ENABLE_MS(port, termios->c_cflag)) {
-			spin_lock_irq(&port->lock);
+			uart_port_lock_irq(port);
 			serial8250_disable_ms(port);
-			spin_unlock_irq(&port->lock);
+			uart_port_unlock_irq(port);
 		}
 	}
 }
@@ -3406,9 +3398,9 @@ void serial8250_console_write(struct uart_8250_port *up, const char *s,
 	touch_nmi_watchdog();
 
 	if (oops_in_progress)
-		locked = spin_trylock_irqsave(&port->lock, flags);
+		locked = uart_port_trylock_irqsave(port, &flags);
 	else
-		spin_lock_irqsave(&port->lock, flags);
+		uart_port_lock_irqsave(port, &flags);
 
 	/*
 	 *	First save the IER then disable the interrupts
@@ -3478,7 +3470,7 @@ void serial8250_console_write(struct uart_8250_port *up, const char *s,
 		serial8250_modem_status(up);
 
 	if (locked)
-		spin_unlock_irqrestore(&port->lock, flags);
+		uart_port_unlock_irqrestore(port, flags);
 }
 
 static unsigned int probe_baud(struct uart_port *port)
diff --git a/drivers/tty/serial/8250/Kconfig b/drivers/tty/serial/8250/Kconfig
index ee17cf5c44..8b9a2c4902 100644
--- a/drivers/tty/serial/8250/Kconfig
+++ b/drivers/tty/serial/8250/Kconfig
@@ -148,7 +148,7 @@ config SERIAL_8250_PCI
 
 config SERIAL_8250_EXAR
 	tristate "8250/16550 Exar/Commtech PCI/PCIe device support"
-	depends on SERIAL_8250_PCI
+	depends on SERIAL_8250 && PCI
 	default SERIAL_8250
 	help
 	  This builds support for XR17C1xx, XR17V3xx and some Commtech
@@ -222,7 +222,7 @@ config SERIAL_8250_EXTENDED
 
 config SERIAL_8250_MANY_PORTS
 	bool "Support more than 4 legacy serial ports"
-	depends on SERIAL_8250_EXTENDED && !IA64
+	depends on SERIAL_8250_EXTENDED
 	help
 	  Say Y here if you have dumb serial boards other than the four
 	  standard COM 1/2/3/4 ports. This may happen if you have an AST
diff --git a/drivers/tty/serial/8250/Makefile b/drivers/tty/serial/8250/Makefile
index 628b75be31..ea2e81f58e 100644
--- a/drivers/tty/serial/8250/Makefile
+++ b/drivers/tty/serial/8250/Makefile
@@ -13,39 +13,41 @@ obj-$(CONFIG_SERIAL_8250)		+= 8250.o 8250_base.o
 8250_base-$(CONFIG_SERIAL_8250_DWLIB)	+= 8250_dwlib.o
 8250_base-$(CONFIG_SERIAL_8250_FINTEK)	+= 8250_fintek.o
 8250_base-$(CONFIG_SERIAL_8250_PCILIB)	+= 8250_pcilib.o
-obj-$(CONFIG_SERIAL_8250_PARISC)	+= 8250_parisc.o
-obj-$(CONFIG_SERIAL_8250_PCI)		+= 8250_pci.o
-obj-$(CONFIG_SERIAL_8250_EXAR)		+= 8250_exar.o
-obj-$(CONFIG_SERIAL_8250_HP300)		+= 8250_hp300.o
-obj-$(CONFIG_SERIAL_8250_CS)		+= serial_cs.o
+
+obj-$(CONFIG_SERIAL_8250_CONSOLE)	+= 8250_early.o
+
+obj-$(CONFIG_SERIAL_8250_ACCENT)	+= 8250_accent.o
 obj-$(CONFIG_SERIAL_8250_ACORN)		+= 8250_acorn.o
 obj-$(CONFIG_SERIAL_8250_ASPEED_VUART)	+= 8250_aspeed_vuart.o
 obj-$(CONFIG_SERIAL_8250_BCM2835AUX)	+= 8250_bcm2835aux.o
-obj-$(CONFIG_SERIAL_8250_CONSOLE)	+= 8250_early.o
-obj-$(CONFIG_SERIAL_8250_FOURPORT)	+= 8250_fourport.o
-obj-$(CONFIG_SERIAL_8250_ACCENT)	+= 8250_accent.o
+obj-$(CONFIG_SERIAL_8250_BCM7271)	+= 8250_bcm7271.o
 obj-$(CONFIG_SERIAL_8250_BOCA)		+= 8250_boca.o
-obj-$(CONFIG_SERIAL_8250_EXAR_ST16C554)	+= 8250_exar_st16c554.o
-obj-$(CONFIG_SERIAL_8250_HUB6)		+= 8250_hub6.o
-obj-$(CONFIG_SERIAL_8250_PCI1XXXX)	+= 8250_pci1xxxx.o
-obj-$(CONFIG_SERIAL_8250_FSL)		+= 8250_fsl.o
-obj-$(CONFIG_SERIAL_8250_MEN_MCB)	+= 8250_men_mcb.o
 obj-$(CONFIG_SERIAL_8250_DFL)		+= 8250_dfl.o
 obj-$(CONFIG_SERIAL_8250_DW)		+= 8250_dw.o
 obj-$(CONFIG_SERIAL_8250_EM)		+= 8250_em.o
+obj-$(CONFIG_SERIAL_8250_EXAR)		+= 8250_exar.o
+obj-$(CONFIG_SERIAL_8250_EXAR_ST16C554)	+= 8250_exar_st16c554.o
+obj-$(CONFIG_SERIAL_8250_FOURPORT)	+= 8250_fourport.o
+obj-$(CONFIG_SERIAL_8250_FSL)		+= 8250_fsl.o
+obj-$(CONFIG_SERIAL_8250_HP300)		+= 8250_hp300.o
+obj-$(CONFIG_SERIAL_8250_HUB6)		+= 8250_hub6.o
+obj-$(CONFIG_SERIAL_8250_INGENIC)	+= 8250_ingenic.o
 obj-$(CONFIG_SERIAL_8250_IOC3)		+= 8250_ioc3.o
-obj-$(CONFIG_SERIAL_8250_OMAP)		+= 8250_omap.o
-obj-$(CONFIG_SERIAL_8250_RT288X)	+= 8250_rt288x.o
 obj-$(CONFIG_SERIAL_8250_LPC18XX)	+= 8250_lpc18xx.o
-obj-$(CONFIG_SERIAL_8250_MT6577)	+= 8250_mtk.o
-obj-$(CONFIG_SERIAL_8250_UNIPHIER)	+= 8250_uniphier.o
-obj-$(CONFIG_SERIAL_8250_INGENIC)	+= 8250_ingenic.o
 obj-$(CONFIG_SERIAL_8250_LPSS)		+= 8250_lpss.o
+obj-$(CONFIG_SERIAL_8250_MEN_MCB)	+= 8250_men_mcb.o
 obj-$(CONFIG_SERIAL_8250_MID)		+= 8250_mid.o
+obj-$(CONFIG_SERIAL_8250_MT6577)	+= 8250_mtk.o
+obj-$(CONFIG_SERIAL_OF_PLATFORM)	+= 8250_of.o
+obj-$(CONFIG_SERIAL_8250_OMAP)		+= 8250_omap.o
+obj-$(CONFIG_SERIAL_8250_PARISC)	+= 8250_parisc.o
+obj-$(CONFIG_SERIAL_8250_PCI)		+= 8250_pci.o
+obj-$(CONFIG_SERIAL_8250_PCI1XXXX)	+= 8250_pci1xxxx.o
 obj-$(CONFIG_SERIAL_8250_PERICOM)	+= 8250_pericom.o
 obj-$(CONFIG_SERIAL_8250_PXA)		+= 8250_pxa.o
+obj-$(CONFIG_SERIAL_8250_RT288X)	+= 8250_rt288x.o
+obj-$(CONFIG_SERIAL_8250_CS)		+= serial_cs.o
+obj-$(CONFIG_SERIAL_8250_UNIPHIER)	+= 8250_uniphier.o
 obj-$(CONFIG_SERIAL_8250_TEGRA)		+= 8250_tegra.o
-obj-$(CONFIG_SERIAL_8250_BCM7271)	+= 8250_bcm7271.o
-obj-$(CONFIG_SERIAL_OF_PLATFORM)	+= 8250_of.o
 
 CFLAGS_8250_ingenic.o += -I$(srctree)/scripts/dtc/libfdt