diff --git a/drivers/misc/ibmasm/uart.c b/drivers/misc/ibmasm/uart.c
index 7e98434cfa37..9783caf49696 100644
--- a/drivers/misc/ibmasm/uart.c
+++ b/drivers/misc/ibmasm/uart.c
@@ -50,7 +50,7 @@ void ibmasm_register_uart(struct service_processor *sp)
 	memset(&uport, 0, sizeof(struct uart_port));
 	uport.irq	= sp->irq;
 	uport.uartclk	= 3686400;
-	uport.flags	= UPF_AUTOPROBE | UPF_SHARE_IRQ;
+	uport.flags	= UPF_SHARE_IRQ;
 	uport.iotype	= UPIO_MEM;
 	uport.membase	= iomem_base;
 
diff --git a/drivers/serial/21285.c b/drivers/serial/21285.c
index 221999bcf8fe..7aef7518b0d1 100644
--- a/drivers/serial/21285.c
+++ b/drivers/serial/21285.c
@@ -366,7 +366,7 @@ static struct uart_port serial21285_port = {
 	.irq		= NO_IRQ,
 	.fifosize	= 16,
 	.ops		= &serial21285_ops,
-	.flags		= ASYNC_BOOT_AUTOCONF,
+	.flags		= UPF_BOOT_AUTOCONF,
 };
 
 static void serial21285_setup_ports(void)
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index bc36edff2058..179c1f065e60 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -31,7 +31,6 @@
 #include <linux/init.h>
 #include <linux/console.h>
 #include <linux/sysrq.h>
-#include <linux/mca.h>
 #include <linux/delay.h>
 #include <linux/platform_device.h>
 #include <linux/tty.h>
@@ -2026,12 +2025,6 @@ static void serial8250_config_port(struct uart_port *port, int flags)
 	int probeflags = PROBE_ANY;
 	int ret;
 
-	/*
-	 * Don't probe for MCA ports on non-MCA machines.
-	 */
-	if (up->port.flags & UPF_BOOT_ONLYMCA && !MCA_bus)
-		return;
-
 	/*
 	 * Find the region that we can probe for.  This in turn
 	 * tells us whether we can probe for the type of port.
@@ -2164,7 +2157,7 @@ serial8250_register_ports(struct uart_driver *drv, struct device *dev)
 /*
  *	Wait for transmitter & holding register to empty
  */
-static inline void wait_for_xmitr(struct uart_8250_port *up)
+static inline void wait_for_xmitr(struct uart_8250_port *up, int bits)
 {
 	unsigned int status, tmout = 10000;
 
@@ -2178,7 +2171,7 @@ static inline void wait_for_xmitr(struct uart_8250_port *up)
 		if (--tmout == 0)
 			break;
 		udelay(1);
-	} while ((status & BOTH_EMPTY) != BOTH_EMPTY);
+	} while ((status & bits) != bits);
 
 	/* Wait up to 1s for flow control if necessary */
 	if (up->port.flags & UPF_CONS_FLOW) {
@@ -2218,7 +2211,7 @@ serial8250_console_write(struct console *co, const char *s, unsigned int count)
 	 *	Now, do each character
 	 */
 	for (i = 0; i < count; i++, s++) {
-		wait_for_xmitr(up);
+		wait_for_xmitr(up, UART_LSR_THRE);
 
 		/*
 		 *	Send the character out.
@@ -2226,7 +2219,7 @@ serial8250_console_write(struct console *co, const char *s, unsigned int count)
 		 */
 		serial_out(up, UART_TX, *s);
 		if (*s == 10) {
-			wait_for_xmitr(up);
+			wait_for_xmitr(up, UART_LSR_THRE);
 			serial_out(up, UART_TX, 13);
 		}
 	}
@@ -2235,8 +2228,8 @@ serial8250_console_write(struct console *co, const char *s, unsigned int count)
 	 *	Finally, wait for transmitter to become empty
 	 *	and restore the IER
 	 */
-	wait_for_xmitr(up);
-	serial_out(up, UART_IER, ier);
+	wait_for_xmitr(up, BOTH_EMPTY);
+	serial_out(up, UART_IER, ier | UART_IER_THRI);
 }
 
 static int serial8250_console_setup(struct console *co, char *options)
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 9fd1925de361..0d38f0f2ae29 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -23,7 +23,7 @@ config SERIAL_8250
 	  work.)
 
 	  To compile this driver as a module, choose M here: the
-	  module will be called serial.
+	  module will be called 8250.
 	  [WARNING: Do not compile this driver as a module if you are using
 	  non-standard serial ports, since the configuration information will
 	  be lost when the driver is unloaded.  This limitation may be lifted
diff --git a/drivers/serial/amba-pl010.c b/drivers/serial/amba-pl010.c
index 3490022e9fdc..429de2723a1c 100644
--- a/drivers/serial/amba-pl010.c
+++ b/drivers/serial/amba-pl010.c
@@ -566,7 +566,7 @@ static struct uart_amba_port amba_ports[UART_NR] = {
 			.uartclk	= 14745600,
 			.fifosize	= 16,
 			.ops		= &amba_pl010_pops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 0,
 		},
 		.dtr_mask	= 1 << 5,
@@ -581,7 +581,7 @@ static struct uart_amba_port amba_ports[UART_NR] = {
 			.uartclk	= 14745600,
 			.fifosize	= 16,
 			.ops		= &amba_pl010_pops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 1,
 		},
 		.dtr_mask	= 1 << 7,
diff --git a/drivers/serial/clps711x.c b/drivers/serial/clps711x.c
index 8ef999481f93..ce7b2e4ecd17 100644
--- a/drivers/serial/clps711x.c
+++ b/drivers/serial/clps711x.c
@@ -410,7 +410,7 @@ static struct uart_port clps711x_ports[UART_NR] = {
 		.fifosize	= 16,
 		.ops		= &clps711x_pops,
 		.line		= 0,
-		.flags		= ASYNC_BOOT_AUTOCONF,
+		.flags		= UPF_BOOT_AUTOCONF,
 	},
 	{
 		.iobase		= SYSCON2,
@@ -419,7 +419,7 @@ static struct uart_port clps711x_ports[UART_NR] = {
 		.fifosize	= 16,
 		.ops		= &clps711x_pops,
 		.line		= 1,
-		.flags		= ASYNC_BOOT_AUTOCONF,
+		.flags		= UPF_BOOT_AUTOCONF,
 	}
 };
 
diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c
index fa3bbd6c751f..858048efe1ed 100644
--- a/drivers/serial/imx.c
+++ b/drivers/serial/imx.c
@@ -674,7 +674,7 @@ static struct imx_port imx_ports[] = {
 		.irq		= UART1_MINT_RX,
 		.uartclk	= 16000000,
 		.fifosize	= 8,
-		.flags		= ASYNC_BOOT_AUTOCONF,
+		.flags		= UPF_BOOT_AUTOCONF,
 		.ops		= &imx_pops,
 		.line		= 0,
 	},
@@ -690,7 +690,7 @@ static struct imx_port imx_ports[] = {
 		.irq		= UART2_MINT_RX,
 		.uartclk	= 16000000,
 		.fifosize	= 8,
-		.flags		= ASYNC_BOOT_AUTOCONF,
+		.flags		= UPF_BOOT_AUTOCONF,
 		.ops		= &imx_pops,
 		.line		= 1,
 	},
diff --git a/drivers/serial/sa1100.c b/drivers/serial/sa1100.c
index 1bd93168f504..ff7b60b4de37 100644
--- a/drivers/serial/sa1100.c
+++ b/drivers/serial/sa1100.c
@@ -665,21 +665,21 @@ void __init sa1100_register_uart(int idx, int port)
 		sa1100_ports[idx].port.membase = (void __iomem *)&Ser1UTCR0;
 		sa1100_ports[idx].port.mapbase = _Ser1UTCR0;
 		sa1100_ports[idx].port.irq     = IRQ_Ser1UART;
-		sa1100_ports[idx].port.flags   = ASYNC_BOOT_AUTOCONF;
+		sa1100_ports[idx].port.flags   = UPF_BOOT_AUTOCONF;
 		break;
 
 	case 2:
 		sa1100_ports[idx].port.membase = (void __iomem *)&Ser2UTCR0;
 		sa1100_ports[idx].port.mapbase = _Ser2UTCR0;
 		sa1100_ports[idx].port.irq     = IRQ_Ser2ICP;
-		sa1100_ports[idx].port.flags   = ASYNC_BOOT_AUTOCONF;
+		sa1100_ports[idx].port.flags   = UPF_BOOT_AUTOCONF;
 		break;
 
 	case 3:
 		sa1100_ports[idx].port.membase = (void __iomem *)&Ser3UTCR0;
 		sa1100_ports[idx].port.mapbase = _Ser3UTCR0;
 		sa1100_ports[idx].port.irq     = IRQ_Ser3UART;
-		sa1100_ports[idx].port.flags   = ASYNC_BOOT_AUTOCONF;
+		sa1100_ports[idx].port.flags   = UPF_BOOT_AUTOCONF;
 		break;
 
 	default:
diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index 943770470b9d..0717abfdae06 100644
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -332,7 +332,7 @@ uart_get_baud_rate(struct uart_port *port, struct termios *termios,
 		   struct termios *old, unsigned int min, unsigned int max)
 {
 	unsigned int try, baud, altbaud = 38400;
-	unsigned int flags = port->flags & UPF_SPD_MASK;
+	upf_t flags = port->flags & UPF_SPD_MASK;
 
 	if (flags == UPF_SPD_HI)
 		altbaud = 57600;
@@ -615,8 +615,9 @@ static int uart_set_info(struct uart_state *state,
 	struct serial_struct new_serial;
 	struct uart_port *port = state->port;
 	unsigned long new_port;
-	unsigned int change_irq, change_port, old_flags, closing_wait;
+	unsigned int change_irq, change_port, closing_wait;
 	unsigned int old_custom_divisor, close_delay;
+	upf_t old_flags, new_flags;
 	int retval = 0;
 
 	if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
@@ -655,6 +656,7 @@ static int uart_set_info(struct uart_state *state,
 		      new_serial.type != port->type;
 
 	old_flags = port->flags;
+	new_flags = new_serial.flags;
 	old_custom_divisor = port->custom_divisor;
 
 	if (!capable(CAP_SYS_ADMIN)) {
@@ -664,10 +666,10 @@ static int uart_set_info(struct uart_state *state,
 		    (close_delay != state->close_delay) ||
 		    (closing_wait != state->closing_wait) ||
 		    (new_serial.xmit_fifo_size != port->fifosize) ||
-		    (((new_serial.flags ^ old_flags) & ~UPF_USR_MASK) != 0))
+		    (((new_flags ^ old_flags) & ~UPF_USR_MASK) != 0))
 			goto exit;
 		port->flags = ((port->flags & ~UPF_USR_MASK) |
-			       (new_serial.flags & UPF_USR_MASK));
+			       (new_flags & UPF_USR_MASK));
 		port->custom_divisor = new_serial.custom_divisor;
 		goto check_and_exit;
 	}
@@ -764,7 +766,7 @@ static int uart_set_info(struct uart_state *state,
 	port->irq              = new_serial.irq;
 	port->uartclk          = new_serial.baud_base * 16;
 	port->flags            = (port->flags & ~UPF_CHANGE_MASK) |
-				 (new_serial.flags & UPF_CHANGE_MASK);
+				 (new_flags & UPF_CHANGE_MASK);
 	port->custom_divisor   = new_serial.custom_divisor;
 	state->close_delay     = close_delay;
 	state->closing_wait    = closing_wait;
@@ -1870,7 +1872,7 @@ int uart_suspend_port(struct uart_driver *drv, struct uart_port *port)
 	mutex_lock(&state->mutex);
 
 	if (state->info && state->info->flags & UIF_INITIALIZED) {
-		struct uart_ops *ops = port->ops;
+		const struct uart_ops *ops = port->ops;
 
 		spin_lock_irq(&port->lock);
 		ops->stop_tx(port);
@@ -1932,7 +1934,7 @@ int uart_resume_port(struct uart_driver *drv, struct uart_port *port)
 	}
 
 	if (state->info && state->info->flags & UIF_INITIALIZED) {
-		struct uart_ops *ops = port->ops;
+		const struct uart_ops *ops = port->ops;
 		int ret;
 
 		ops->set_mctrl(port, 0);
diff --git a/drivers/serial/serial_lh7a40x.c b/drivers/serial/serial_lh7a40x.c
index d4a1f0e798c1..d0490f67f597 100644
--- a/drivers/serial/serial_lh7a40x.c
+++ b/drivers/serial/serial_lh7a40x.c
@@ -506,7 +506,7 @@ static struct uart_port_lh7a40x lh7a40x_ports[DEV_NR] = {
 			.uartclk	= 14745600/2,
 			.fifosize	= 16,
 			.ops		= &lh7a40x_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 0,
 		},
 	},
@@ -519,7 +519,7 @@ static struct uart_port_lh7a40x lh7a40x_ports[DEV_NR] = {
 			.uartclk	= 14745600/2,
 			.fifosize	= 16,
 			.ops		= &lh7a40x_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 1,
 		},
 	},
@@ -532,7 +532,7 @@ static struct uart_port_lh7a40x lh7a40x_ports[DEV_NR] = {
 			.uartclk	= 14745600/2,
 			.fifosize	= 16,
 			.ops		= &lh7a40x_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 2,
 		},
 	},
diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c
index a9e070759628..0111206327ca 100644
--- a/drivers/serial/sh-sci.c
+++ b/drivers/serial/sh-sci.c
@@ -1113,10 +1113,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)0xfffffe80,
 			.mapbase	= 0xfffffe80,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 25,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 0,
 		},
 		.type		= PORT_SCI,
@@ -1128,10 +1128,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)SCIF0,
 			.mapbase	= SCIF0,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 55,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 0,
 		},
 		.type		= PORT_SCIF,
@@ -1142,10 +1142,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)SCIF2,
 			.mapbase	= SCIF2,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 59,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 1,
 		},
 		.type		= PORT_SCIF,
@@ -1157,10 +1157,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)0xfffffe80,
 			.mapbase	= 0xfffffe80,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 25,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 0,
 		},
 		.type		= PORT_SCI,
@@ -1171,10 +1171,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)0xa4000150,
 			.mapbase	= 0xa4000150,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 59,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 1,
 		},
 		.type		= PORT_SCIF,
@@ -1185,10 +1185,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)0xa4000140,
 			.mapbase	= 0xa4000140,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 55,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 2,
 		},
 		.type		= PORT_IRDA,
@@ -1200,10 +1200,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)0xA4430000,
 			.mapbase	= 0xA4430000,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 25,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 0,
 		},
 		.type		= PORT_SCIF,
@@ -1215,10 +1215,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)0xffe00000,
 			.mapbase	= 0xffe00000,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 25,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 0,
 		},
 		.type		= PORT_SCIF,
@@ -1230,10 +1230,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)0xffe80000,
 			.mapbase	= 0xffe80000,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 43,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 0,
 		},
 		.type		= PORT_SCIF,
@@ -1245,10 +1245,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)0xffe00000,
 			.mapbase	= 0xffe00000,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 25,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 0,
 		},
 		.type		= PORT_SCI,
@@ -1259,10 +1259,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)0xffe80000,
 			.mapbase	= 0xffe80000,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 43,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 1,
 		},
 		.type		= PORT_SCIF,
@@ -1274,10 +1274,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)0xfe600000,
 			.mapbase	= 0xfe600000,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 55,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 0,
 		},
 		.type		= PORT_SCIF,
@@ -1288,10 +1288,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)0xfe610000,
 			.mapbase	= 0xfe610000,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 75,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 1,
 		},
 		.type		= PORT_SCIF,
@@ -1302,10 +1302,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)0xfe620000,
 			.mapbase	= 0xfe620000,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 79,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 2,
 		},
 		.type		= PORT_SCIF,
@@ -1317,10 +1317,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)0xffe80000,
 			.mapbase	= 0xffe80000,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 43,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 0,
 		},
 		.type		= PORT_SCIF,
@@ -1332,10 +1332,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)0xffe00000,
 			.mapbase	= 0xffe00000,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 26,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 0,
 		},
 		.type		= PORT_SCIF,
@@ -1346,10 +1346,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)0xffe80000,
 			.mapbase	= 0xffe80000,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 43,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 1,
 		},
 		.type		= PORT_SCIF,
@@ -1359,10 +1359,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 #elif defined(CONFIG_CPU_SUBTYPE_SH5_101) || defined(CONFIG_CPU_SUBTYPE_SH5_103)
 	{
 		.port	= {
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 42,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 0,
 		},
 		.type		= PORT_SCIF,
@@ -1374,10 +1374,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)0x00ffffb0,
 			.mapbase	= 0x00ffffb0,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 54,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 0,
 		},
 		.type		= PORT_SCI,
@@ -1388,10 +1388,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)0x00ffffb8,
 			.mapbase	= 0x00ffffb8,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 58,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 1,
 		},
 		.type		= PORT_SCI,
@@ -1402,10 +1402,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)0x00ffffc0,
 			.mapbase	= 0x00ffffc0,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 62,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 2,
 		},
 		.type		= PORT_SCI,
@@ -1417,10 +1417,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)0x00ffff78,
 			.mapbase	= 0x00ffff78,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 90,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 0,
 		},
 		.type		= PORT_SCI,
@@ -1431,10 +1431,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)0x00ffff80,
 			.mapbase	= 0x00ffff80,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 94,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 1,
 		},
 		.type		= PORT_SCI,
@@ -1445,10 +1445,10 @@ static struct sci_port sci_ports[SCI_NPORTS] = {
 		.port	= {
 			.membase	= (void *)0x00ffff88,
 			.mapbase	= 0x00ffff88,
-			.iotype		= SERIAL_IO_MEM,
+			.iotype		= UPIO_MEM,
 			.irq		= 98,
 			.ops		= &sci_uart_ops,
-			.flags		= ASYNC_BOOT_AUTOCONF,
+			.flags		= UPF_BOOT_AUTOCONF,
 			.line		= 2,
 		},
 		.type		= PORT_SCI,
diff --git a/drivers/serial/sunsu.c b/drivers/serial/sunsu.c
index 9a3665b34d97..bc67442c6b4c 100644
--- a/drivers/serial/sunsu.c
+++ b/drivers/serial/sunsu.c
@@ -669,7 +669,7 @@ static int sunsu_startup(struct uart_port *port)
 	 * if it is, then bail out, because there's likely no UART
 	 * here.
 	 */
-	if (!(up->port.flags & ASYNC_BUGGY_UART) &&
+	if (!(up->port.flags & UPF_BUGGY_UART) &&
 	    (serial_inp(up, UART_LSR) == 0xff)) {
 		printk("ttyS%d: LSR safety check engaged!\n", up->port.line);
 		return -ENODEV;
@@ -707,7 +707,7 @@ static int sunsu_startup(struct uart_port *port)
 	up->ier = UART_IER_RLSI | UART_IER_RDI;
 	serial_outp(up, UART_IER, up->ier);
 
-	if (up->port.flags & ASYNC_FOURPORT) {
+	if (up->port.flags & UPF_FOURPORT) {
 		unsigned int icp;
 		/*
 		 * Enable interrupts on the AST Fourport board
@@ -740,7 +740,7 @@ static void sunsu_shutdown(struct uart_port *port)
 	serial_outp(up, UART_IER, 0);
 
 	spin_lock_irqsave(&up->port.lock, flags);
-	if (up->port.flags & ASYNC_FOURPORT) {
+	if (up->port.flags & UPF_FOURPORT) {
 		/* reset interrupts on the AST Fourport board */
 		inb((up->port.iobase & 0xfe0) | 0x1f);
 		up->port.mctrl |= TIOCM_OUT1;
@@ -1132,7 +1132,7 @@ static void sunsu_autoconfig(struct uart_sunsu_port *up)
 
 	spin_lock_irqsave(&up->port.lock, flags);
 
-	if (!(up->port.flags & ASYNC_BUGGY_UART)) {
+	if (!(up->port.flags & UPF_BUGGY_UART)) {
 		/*
 		 * Do a simple existence test first; if we fail this, there's
 		 * no point trying anything else.
@@ -1170,7 +1170,7 @@ static void sunsu_autoconfig(struct uart_sunsu_port *up)
 	 * manufacturer would be stupid enough to design a board
 	 * that conflicts with COM 1-4 --- we hope!
 	 */
-	if (!(up->port.flags & ASYNC_SKIP_TEST)) {
+	if (!(up->port.flags & UPF_SKIP_TEST)) {
 		serial_outp(up, UART_MCR, UART_MCR_LOOP | 0x0A);
 		status1 = serial_inp(up, UART_MSR) & 0xF0;
 		serial_outp(up, UART_MCR, save_mcr);
@@ -1371,7 +1371,7 @@ static __inline__ void wait_for_xmitr(struct uart_sunsu_port *up)
 	} while ((status & BOTH_EMPTY) != BOTH_EMPTY);
 
 	/* Wait up to 1s for flow control if necessary */
-	if (up->port.flags & ASYNC_CONS_FLOW) {
+	if (up->port.flags & UPF_CONS_FLOW) {
 		tmout = 1000000;
 		while (--tmout &&
 		       ((serial_in(up, UART_MSR) & UART_MSR_CTS) == 0))
@@ -1513,7 +1513,7 @@ static int __init sunsu_serial_init(void)
 		    up->su_type == SU_PORT_KBD)
 			continue;
 
-		up->port.flags |= ASYNC_BOOT_AUTOCONF;
+		up->port.flags |= UPF_BOOT_AUTOCONF;
 		up->port.type = PORT_UNKNOWN;
 		up->port.uartclk = (SU_BASE_BAUD * 16);
 
diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
index cee302aefdb7..73b464f0926a 100644
--- a/include/linux/serial_8250.h
+++ b/include/linux/serial_8250.h
@@ -26,7 +26,7 @@ struct plat_serial8250_port {
 	unsigned char	regshift;	/* register shift */
 	unsigned char	iotype;		/* UPIO_* */
 	unsigned char	hub6;
-	unsigned int	flags;		/* UPF_* flags */
+	upf_t		flags;		/* UPF_* flags */
 };
 
 /*
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index ec351005bf9d..4041122dabfc 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -203,6 +203,8 @@ struct uart_icount {
 	__u32	buf_overrun;
 };
 
+typedef unsigned int __bitwise__ upf_t;
+
 struct uart_port {
 	spinlock_t		lock;			/* port lock */
 	unsigned int		iobase;			/* in/out[bwl] */
@@ -230,36 +232,34 @@ struct uart_port {
 	unsigned long		sysrq;			/* sysrq timeout */
 #endif
 
-	unsigned int		flags;
+	upf_t			flags;
 
-#define UPF_FOURPORT		(1 << 1)
-#define UPF_SAK			(1 << 2)
-#define UPF_SPD_MASK		(0x1030)
-#define UPF_SPD_HI		(0x0010)
-#define UPF_SPD_VHI		(0x0020)
-#define UPF_SPD_CUST		(0x0030)
-#define UPF_SPD_SHI		(0x1000)
-#define UPF_SPD_WARP		(0x1010)
-#define UPF_SKIP_TEST		(1 << 6)
-#define UPF_AUTO_IRQ		(1 << 7)
-#define UPF_HARDPPS_CD		(1 << 11)
-#define UPF_LOW_LATENCY		(1 << 13)
-#define UPF_BUGGY_UART		(1 << 14)
-#define UPF_AUTOPROBE		(1 << 15)
-#define UPF_MAGIC_MULTIPLIER	(1 << 16)
-#define UPF_BOOT_ONLYMCA	(1 << 22)
-#define UPF_CONS_FLOW		(1 << 23)
-#define UPF_SHARE_IRQ		(1 << 24)
-#define UPF_BOOT_AUTOCONF	(1 << 28)
-#define UPF_IOREMAP		(1 << 31)
+#define UPF_FOURPORT		((__force upf_t) (1 << 1))
+#define UPF_SAK			((__force upf_t) (1 << 2))
+#define UPF_SPD_MASK		((__force upf_t) (0x1030))
+#define UPF_SPD_HI		((__force upf_t) (0x0010))
+#define UPF_SPD_VHI		((__force upf_t) (0x0020))
+#define UPF_SPD_CUST		((__force upf_t) (0x0030))
+#define UPF_SPD_SHI		((__force upf_t) (0x1000))
+#define UPF_SPD_WARP		((__force upf_t) (0x1010))
+#define UPF_SKIP_TEST		((__force upf_t) (1 << 6))
+#define UPF_AUTO_IRQ		((__force upf_t) (1 << 7))
+#define UPF_HARDPPS_CD		((__force upf_t) (1 << 11))
+#define UPF_LOW_LATENCY		((__force upf_t) (1 << 13))
+#define UPF_BUGGY_UART		((__force upf_t) (1 << 14))
+#define UPF_MAGIC_MULTIPLIER	((__force upf_t) (1 << 16))
+#define UPF_CONS_FLOW		((__force upf_t) (1 << 23))
+#define UPF_SHARE_IRQ		((__force upf_t) (1 << 24))
+#define UPF_BOOT_AUTOCONF	((__force upf_t) (1 << 28))
+#define UPF_IOREMAP		((__force upf_t) (1 << 31))
 
-#define UPF_CHANGE_MASK		(0x17fff)
-#define UPF_USR_MASK		(UPF_SPD_MASK|UPF_LOW_LATENCY)
+#define UPF_CHANGE_MASK		((__force upf_t) (0x17fff))
+#define UPF_USR_MASK		((__force upf_t) (UPF_SPD_MASK|UPF_LOW_LATENCY))
 
 	unsigned int		mctrl;			/* current modem ctrl settings */
 	unsigned int		timeout;		/* character-based timeout */
 	unsigned int		type;			/* port type */
-	struct uart_ops		*ops;
+	const struct uart_ops	*ops;
 	unsigned int		custom_divisor;
 	unsigned int		line;			/* port index */
 	unsigned long		mapbase;		/* for ioremap */
@@ -289,6 +289,9 @@ struct uart_state {
 };
 
 #define UART_XMIT_SIZE	PAGE_SIZE
+
+typedef unsigned int __bitwise__ uif_t;
+
 /*
  * This is the state information which is only valid when the port
  * is open; it may be freed by the core driver once the device has
@@ -298,17 +301,16 @@ struct uart_state {
 struct uart_info {
 	struct tty_struct	*tty;
 	struct circ_buf		xmit;
-	unsigned int		flags;
+	uif_t			flags;
 
 /*
- * These are the flags that specific to info->flags, and reflect our
- * internal state.  They can not be accessed via port->flags.  Low
- * level drivers must not change these, but may query them instead.
+ * Definitions for info->flags.  These are _private_ to serial_core, and
+ * are specific to this structure.  They may be queried by low level drivers.
  */
-#define UIF_CHECK_CD		(1 << 25)
-#define UIF_CTS_FLOW		(1 << 26)
-#define UIF_NORMAL_ACTIVE	(1 << 29)
-#define UIF_INITIALIZED		(1 << 31)
+#define UIF_CHECK_CD		((__force uif_t) (1 << 25))
+#define UIF_CTS_FLOW		((__force uif_t) (1 << 26))
+#define UIF_NORMAL_ACTIVE	((__force uif_t) (1 << 29))
+#define UIF_INITIALIZED		((__force uif_t) (1 << 31))
 
 	int			blocked_open;
 
@@ -430,7 +432,7 @@ static inline int uart_handle_break(struct uart_port *port)
 		port->sysrq = 0;
 	}
 #endif
-	if (info->flags & UPF_SAK)
+	if (port->flags & UPF_SAK)
 		do_SAK(info->tty);
 	return 0;
 }