Merge branch 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6

* 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: (36 commits)
  serial: apbuart: Fixup apbuart_console_init()
  TTY: Add tty ioctl to figure device node of the system console.
  tty: add 'active' sysfs attribute to tty0 and console device
  drivers: serial: apbuart: Handle OF failures gracefully
  Serial: Avoid unbalanced IRQ wake disable during resume
  tty: fix typos/errors in tty_driver.h comments
  pch_uart : fix warnings for 64bit compile
  8250: fix uninitialized FIFOs
  ip2: fix compiler warning on ip2main_pci_tbl
  specialix: fix compiler warning on specialix_pci_tbl
  rocket: fix compiler warning on rocket_pci_ids
  8250: add a UPIO_DWAPB32 for 32 bit accesses
  8250: use container_of() instead of casting
  serial: omap-serial: Add support for kernel debugger
  serial: fix pch_uart kconfig & build
  drivers: char: hvc: add arm JTAG DCC console support
  RS485 documentation: add 16C950 UART description
  serial: ifx6x60: fix memory leak
  serial: ifx6x60: free IRQ on error
  Serial: EG20T: add PCH_UART driver
  ...

Fixed up conflicts in drivers/serial/apbuart.c with evil merge that
makes the code look fairly sane (unlike either side).

24 files changed, 4211 insertions, 173 deletions

diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 43d3395325c..d4a7776f4b7 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -682,6 +682,15 @@ config HVC_UDBG
        select HVC_DRIVER
        default n
 
+config HVC_DCC
+       bool "ARM JTAG DCC console"
+       depends on ARM
+       select HVC_DRIVER
+       help
+         This console uses the JTAG DCC on ARM to create a console under the HVC
+	 driver. This console is used through a JTAG only on ARM. If you don't have
+	 a JTAG then you probably don't want this option.
+
 config VIRTIO_CONSOLE
 	tristate "Virtio console"
 	depends on VIRTIO
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index ba53ec956c9..fa0b824b7a6 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_HVC_CONSOLE)	+= hvc_vio.o hvsi.o
 obj-$(CONFIG_HVC_ISERIES)	+= hvc_iseries.o
 obj-$(CONFIG_HVC_RTAS)		+= hvc_rtas.o
 obj-$(CONFIG_HVC_TILE)		+= hvc_tile.o
+obj-$(CONFIG_HVC_DCC)		+= hvc_dcc.o
 obj-$(CONFIG_HVC_BEAT)		+= hvc_beat.o
 obj-$(CONFIG_HVC_DRIVER)	+= hvc_console.o
 obj-$(CONFIG_HVC_IRQ)		+= hvc_irq.o
diff --git a/drivers/char/hvc_dcc.c b/drivers/char/hvc_dcc.c
new file mode 100644
index 00000000000..6470f63deb4
--- /dev/null
+++ b/drivers/char/hvc_dcc.c
@@ -0,0 +1,133 @@
+/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/moduleparam.h>
+#include <linux/types.h>
+
+#include <asm/processor.h>
+
+#include "hvc_console.h"
+
+/* DCC Status Bits */
+#define DCC_STATUS_RX		(1 << 30)
+#define DCC_STATUS_TX		(1 << 29)
+
+static inline u32 __dcc_getstatus(void)
+{
+	u32 __ret;
+
+	asm("mrc p14, 0, %0, c0, c1, 0	@ read comms ctrl reg"
+		: "=r" (__ret) : : "cc");
+
+	return __ret;
+}
+
+
+#if defined(CONFIG_CPU_V7)
+static inline char __dcc_getchar(void)
+{
+	char __c;
+
+	asm("get_wait:	mrc p14, 0, pc, c0, c1, 0                          \n\
+			bne get_wait                                       \n\
+			mrc p14, 0, %0, c0, c5, 0	@ read comms data reg"
+		: "=r" (__c) : : "cc");
+
+	return __c;
+}
+#else
+static inline char __dcc_getchar(void)
+{
+	char __c;
+
+	asm("mrc p14, 0, %0, c0, c5, 0	@ read comms data reg"
+		: "=r" (__c));
+
+	return __c;
+}
+#endif
+
+#if defined(CONFIG_CPU_V7)
+static inline void __dcc_putchar(char c)
+{
+	asm("put_wait:	mrc p14, 0, pc, c0, c1, 0                 \n\
+			bcs put_wait                              \n\
+			mcr p14, 0, %0, c0, c5, 0                   "
+	: : "r" (c) : "cc");
+}
+#else
+static inline void __dcc_putchar(char c)
+{
+	asm("mcr p14, 0, %0, c0, c5, 0	@ write a char"
+		: /* no output register */
+		: "r" (c));
+}
+#endif
+
+static int hvc_dcc_put_chars(uint32_t vt, const char *buf, int count)
+{
+	int i;
+
+	for (i = 0; i < count; i++) {
+		while (__dcc_getstatus() & DCC_STATUS_TX)
+			cpu_relax();
+
+		__dcc_putchar((char)(buf[i] & 0xFF));
+	}
+
+	return count;
+}
+
+static int hvc_dcc_get_chars(uint32_t vt, char *buf, int count)
+{
+	int i;
+
+	for (i = 0; i < count; ++i) {
+		int c = -1;
+
+		if (__dcc_getstatus() & DCC_STATUS_RX)
+			c = __dcc_getchar();
+		if (c < 0)
+			break;
+		buf[i] = c;
+	}
+
+	return i;
+}
+
+static const struct hv_ops hvc_dcc_get_put_ops = {
+	.get_chars = hvc_dcc_get_chars,
+	.put_chars = hvc_dcc_put_chars,
+};
+
+static int __init hvc_dcc_console_init(void)
+{
+	hvc_instantiate(0, 0, &hvc_dcc_get_put_ops);
+	return 0;
+}
+console_initcall(hvc_dcc_console_init);
+
+static int __init hvc_dcc_init(void)
+{
+	hvc_alloc(0, 0, &hvc_dcc_get_put_ops, 128);
+	return 0;
+}
+device_initcall(hvc_dcc_init);
diff --git a/drivers/char/ip2/ip2main.c b/drivers/char/ip2/ip2main.c
index fcd02baa7d6..c3a025356b8 100644
--- a/drivers/char/ip2/ip2main.c
+++ b/drivers/char/ip2/ip2main.c
@@ -3224,7 +3224,7 @@ ip2trace (unsigned short pn, unsigned char cat, unsigned char label, unsigned lo
 
 MODULE_LICENSE("GPL");
 
-static struct pci_device_id ip2main_pci_tbl[] __devinitdata = {
+static struct pci_device_id ip2main_pci_tbl[] __devinitdata __used = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_COMPUTONE, PCI_DEVICE_ID_COMPUTONE_IP2EX) },
 	{ }
 };
diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c
index 86308830ac4..3e4e73a0d7c 100644
--- a/drivers/char/rocket.c
+++ b/drivers/char/rocket.c
@@ -1764,7 +1764,7 @@ static void rp_flush_buffer(struct tty_struct *tty)
 
 #ifdef CONFIG_PCI
 
-static struct pci_device_id __devinitdata rocket_pci_ids[] = {
+static struct pci_device_id __devinitdata __used rocket_pci_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_ANY_ID) },
 	{ }
 };
diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c
index a7616d226a4..c2bca3f25ef 100644
--- a/drivers/char/specialix.c
+++ b/drivers/char/specialix.c
@@ -2355,7 +2355,7 @@ static void __exit specialix_exit_module(void)
 	func_exit();
 }
 
-static struct pci_device_id specialx_pci_tbl[] __devinitdata = {
+static struct pci_device_id specialx_pci_tbl[] __devinitdata __used = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_IO8) },
 	{ }
 };
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index ee74c934de8..b25e6e49053 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -454,21 +454,40 @@ static void tsi_serial_out(struct uart_port *p, int offset, int value)
 		writeb(value, p->membase + offset);
 }
 
+/* Save the LCR value so it can be re-written when a Busy Detect IRQ occurs. */
+static inline void dwapb_save_out_value(struct uart_port *p, int offset,
+					int value)
+{
+	struct uart_8250_port *up =
+		container_of(p, struct uart_8250_port, port);
+
+	if (offset == UART_LCR)
+		up->lcr = value;
+}
+
+/* Read the IER to ensure any interrupt is cleared before returning from ISR. */
+static inline void dwapb_check_clear_ier(struct uart_port *p, int offset)
+{
+	if (offset == UART_TX || offset == UART_IER)
+		p->serial_in(p, UART_IER);
+}
+
 static void dwapb_serial_out(struct uart_port *p, int offset, int value)
 {
 	int save_offset = offset;
 	offset = map_8250_out_reg(p, offset) << p->regshift;
-	/* Save the LCR value so it can be re-written when a
-	 * Busy Detect interrupt occurs. */
-	if (save_offset == UART_LCR) {
-		struct uart_8250_port *up = (struct uart_8250_port *)p;
-		up->lcr = value;
-	}
+	dwapb_save_out_value(p, save_offset, value);
 	writeb(value, p->membase + offset);
-	/* Read the IER to ensure any interrupt is cleared before
-	 * returning from ISR. */
-	if (save_offset == UART_TX || save_offset == UART_IER)
-		value = p->serial_in(p, UART_IER);
+	dwapb_check_clear_ier(p, save_offset);
+}
+
+static void dwapb32_serial_out(struct uart_port *p, int offset, int value)
+{
+	int save_offset = offset;
+	offset = map_8250_out_reg(p, offset) << p->regshift;
+	dwapb_save_out_value(p, save_offset, value);
+	writel(value, p->membase + offset);
+	dwapb_check_clear_ier(p, save_offset);
 }
 
 static unsigned int io_serial_in(struct uart_port *p, int offset)
@@ -485,7 +504,8 @@ static void io_serial_out(struct uart_port *p, int offset, int value)
 
 static void set_io_from_upio(struct uart_port *p)
 {
-	struct uart_8250_port *up = (struct uart_8250_port *)p;
+	struct uart_8250_port *up =
+		container_of(p, struct uart_8250_port, port);
 	switch (p->iotype) {
 	case UPIO_HUB6:
 		p->serial_in = hub6_serial_in;
@@ -518,6 +538,11 @@ static void set_io_from_upio(struct uart_port *p)
 		p->serial_out = dwapb_serial_out;
 		break;
 
+	case UPIO_DWAPB32:
+		p->serial_in = mem32_serial_in;
+		p->serial_out = dwapb32_serial_out;
+		break;
+
 	default:
 		p->serial_in = io_serial_in;
 		p->serial_out = io_serial_out;
@@ -536,6 +561,7 @@ serial_out_sync(struct uart_8250_port *up, int offset, int value)
 	case UPIO_MEM32:
 	case UPIO_AU:
 	case UPIO_DWAPB:
+	case UPIO_DWAPB32:
 		p->serial_out(p, offset, value);
 		p->serial_in(p, UART_LCR);	/* safe, no side-effects */
 		break;
@@ -1319,7 +1345,8 @@ static inline void __stop_tx(struct uart_8250_port *p)
 
 static void serial8250_stop_tx(struct uart_port *port)
 {
-	struct uart_8250_port *up = (struct uart_8250_port *)port;
+	struct uart_8250_port *up =
+		container_of(port, struct uart_8250_port, port);
 
 	__stop_tx(up);
 
@@ -1336,7 +1363,8 @@ static void transmit_chars(struct uart_8250_port *up);
 
 static void serial8250_start_tx(struct uart_port *port)
 {
-	struct uart_8250_port *up = (struct uart_8250_port *)port;
+	struct uart_8250_port *up =
+		container_of(port, struct uart_8250_port, port);
 
 	if (!(up->ier & UART_IER_THRI)) {
 		up->ier |= UART_IER_THRI;
@@ -1364,7 +1392,8 @@ static void serial8250_start_tx(struct uart_port *port)
 
 static void serial8250_stop_rx(struct uart_port *port)
 {
-	struct uart_8250_port *up = (struct uart_8250_port *)port;
+	struct uart_8250_port *up =
+		container_of(port, struct uart_8250_port, port);
 
 	up->ier &= ~UART_IER_RLSI;
 	up->port.read_status_mask &= ~UART_LSR_DR;
@@ -1373,7 +1402,8 @@ static void serial8250_stop_rx(struct uart_port *port)
 
 static void serial8250_enable_ms(struct uart_port *port)
 {
-	struct uart_8250_port *up = (struct uart_8250_port *)port;
+	struct uart_8250_port *up =
+		container_of(port, struct uart_8250_port, port);
 
 	/* no MSR capabilities */
 	if (up->bugs & UART_BUG_NOMSR)
@@ -1581,7 +1611,8 @@ static irqreturn_t serial8250_interrupt(int irq, void *dev_id)
 			handled = 1;
 
 			end = NULL;
-		} else if (up->port.iotype == UPIO_DWAPB &&
+		} else if ((up->port.iotype == UPIO_DWAPB ||
+			    up->port.iotype == UPIO_DWAPB32) &&
 			  (iir & UART_IIR_BUSY) == UART_IIR_BUSY) {
 			/* The DesignWare APB UART has an Busy Detect (0x07)
 			 * interrupt meaning an LCR write attempt occured while the
@@ -1781,7 +1812,8 @@ static void serial8250_backup_timeout(unsigned long data)
 
 static unsigned int serial8250_tx_empty(struct uart_port *port)
 {
-	struct uart_8250_port *up = (struct uart_8250_port *)port;
+	struct uart_8250_port *up =
+		container_of(port, struct uart_8250_port, port);
 	unsigned long flags;
 	unsigned int lsr;
 
@@ -1795,7 +1827,8 @@ static unsigned int serial8250_tx_empty(struct uart_port *port)
 
 static unsigned int serial8250_get_mctrl(struct uart_port *port)
 {
-	struct uart_8250_port *up = (struct uart_8250_port *)port;
+	struct uart_8250_port *up =
+		container_of(port, struct uart_8250_port, port);
 	unsigned int status;
 	unsigned int ret;
 
@@ -1815,7 +1848,8 @@ static unsigned int serial8250_get_mctrl(struct uart_port *port)
 
 static void serial8250_set_mctrl(struct uart_port *port, unsigned int mctrl)
 {
-	struct uart_8250_port *up = (struct uart_8250_port *)port;
+	struct uart_8250_port *up =
+		container_of(port, struct uart_8250_port, port);
 	unsigned char mcr = 0;
 
 	if (mctrl & TIOCM_RTS)
@@ -1836,7 +1870,8 @@ static void serial8250_set_mctrl(struct uart_port *port, unsigned int mctrl)
 
 static void serial8250_break_ctl(struct uart_port *port, int break_state)
 {
-	struct uart_8250_port *up = (struct uart_8250_port *)port;
+	struct uart_8250_port *up =
+		container_of(port, struct uart_8250_port, port);
 	unsigned long flags;
 
 	spin_lock_irqsave(&up->port.lock, flags);
@@ -1890,7 +1925,8 @@ static void wait_for_xmitr(struct uart_8250_port *up, int bits)
 
 static int serial8250_get_poll_char(struct uart_port *port)
 {
-	struct uart_8250_port *up = (struct uart_8250_port *)port;
+	struct uart_8250_port *up =
+		container_of(port, struct uart_8250_port, port);
 	unsigned char lsr = serial_inp(up, UART_LSR);
 
 	if (!(lsr & UART_LSR_DR))
@@ -1904,7 +1940,8 @@ static void serial8250_put_poll_char(struct uart_port *port,
 			 unsigned char c)
 {
 	unsigned int ier;
-	struct uart_8250_port *up = (struct uart_8250_port *)port;
+	struct uart_8250_port *up =
+		container_of(port, struct uart_8250_port, port);
 
 	/*
 	 *	First save the IER then disable the interrupts
@@ -1938,11 +1975,14 @@ static void serial8250_put_poll_char(struct uart_port *port,
 
 static int serial8250_startup(struct uart_port *port)
 {
-	struct uart_8250_port *up = (struct uart_8250_port *)port;
+	struct uart_8250_port *up =
+		container_of(port, struct uart_8250_port, port);
 	unsigned long flags;
 	unsigned char lsr, iir;
 	int retval;
 
+	up->port.fifosize = uart_config[up->port.type].fifo_size;
+	up->tx_loadsz = uart_config[up->port.type].tx_loadsz;
 	up->capabilities = uart_config[up->port.type].flags;
 	up->mcr = 0;
 
@@ -2166,7 +2206,8 @@ dont_test_tx_en:
 
 static void serial8250_shutdown(struct uart_port *port)
 {
-	struct uart_8250_port *up = (struct uart_8250_port *)port;
+	struct uart_8250_port *up =
+		container_of(port, struct uart_8250_port, port);
 	unsigned long flags;
 
 	/*
@@ -2235,7 +2276,8 @@ void
 serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
 		          struct ktermios *old)
 {
-	struct uart_8250_port *up = (struct uart_8250_port *)port;
+	struct uart_8250_port *up =
+		container_of(port, struct uart_8250_port, port);
 	unsigned char cval, fcr = 0;
 	unsigned long flags;
 	unsigned int baud, quot;
@@ -2435,7 +2477,8 @@ serial8250_set_ldisc(struct uart_port *port, int new)
 void serial8250_do_pm(struct uart_port *port, unsigned int state,
 		      unsigned int oldstate)
 {
-	struct uart_8250_port *p = (struct uart_8250_port *)port;
+	struct uart_8250_port *p =
+		container_of(port, struct uart_8250_port, port);
 
 	serial8250_set_sleep(p, state != 0);
 }
@@ -2476,6 +2519,7 @@ static int serial8250_request_std_resource(struct uart_8250_port *up)
 	case UPIO_MEM32:
 	case UPIO_MEM:
 	case UPIO_DWAPB:
+	case UPIO_DWAPB32:
 		if (!up->port.mapbase)
 			break;
 
@@ -2513,6 +2557,7 @@ static void serial8250_release_std_resource(struct uart_8250_port *up)
 	case UPIO_MEM32:
 	case UPIO_MEM:
 	case UPIO_DWAPB:
+	case UPIO_DWAPB32:
 		if (!up->port.mapbase)
 			break;
 
@@ -2566,7 +2611,8 @@ static void serial8250_release_rsa_resource(struct uart_8250_port *up)
 
 static void serial8250_release_port(struct uart_port *port)
 {
-	struct uart_8250_port *up = (struct uart_8250_port *)port;
+	struct uart_8250_port *up =
+		container_of(port, struct uart_8250_port, port);
 
 	serial8250_release_std_resource(up);
 	if (up->port.type == PORT_RSA)
@@ -2575,7 +2621,8 @@ static void serial8250_release_port(struct uart_port *port)
 
 static int serial8250_request_port(struct uart_port *port)
 {
-	struct uart_8250_port *up = (struct uart_8250_port *)port;
+	struct uart_8250_port *up =
+		container_of(port, struct uart_8250_port, port);
 	int ret = 0;
 
 	ret = serial8250_request_std_resource(up);
@@ -2590,7 +2637,8 @@ static int serial8250_request_port(struct uart_port *port)
 
 static void serial8250_config_port(struct uart_port *port, int flags)
 {
-	struct uart_8250_port *up = (struct uart_8250_port *)port;
+	struct uart_8250_port *up =
+		container_of(port, struct uart_8250_port, port);
 	int probeflags = PROBE_ANY;
 	int ret;
 
@@ -2771,7 +2819,8 @@ serial8250_register_ports(struct uart_driver *drv, struct device *dev)
 
 static void serial8250_console_putchar(struct uart_port *port, int ch)
 {
-	struct uart_8250_port *up = (struct uart_8250_port *)port;
+	struct uart_8250_port *up =
+		container_of(port, struct uart_8250_port, port);
 
 	wait_for_xmitr(up, UART_LSR_THRE);
 	serial_out(up, UART_TX, ch);
diff --git a/drivers/serial/8250_pci.c b/drivers/serial/8250_pci.c
index 842e3b2a02b..8b8930f700b 100644
--- a/drivers/serial/8250_pci.c
+++ b/drivers/serial/8250_pci.c
@@ -957,6 +957,22 @@ pci_default_setup(struct serial_private *priv,
 	return setup_port(priv, port, bar, offset, board->reg_shift);
 }
 
+static int
+ce4100_serial_setup(struct serial_private *priv,
+		  const struct pciserial_board *board,
+		  struct uart_port *port, int idx)
+{
+	int ret;
+
+	ret = setup_port(priv, port, 0, 0, board->reg_shift);
+	port->iotype = UPIO_MEM32;
+	port->type = PORT_XSCALE;
+	port->flags = (port->flags | UPF_FIXED_PORT | UPF_FIXED_TYPE);
+	port->regshift = 2;
+
+	return ret;
+}
+
 static int skip_tx_en_setup(struct serial_private *priv,
 			const struct pciserial_board *board,
 			struct uart_port *port, int idx)
@@ -981,6 +997,7 @@ static int skip_tx_en_setup(struct serial_private *priv,
 #define PCI_SUBDEVICE_ID_POCTAL232	0x0308
 #define PCI_SUBDEVICE_ID_POCTAL422	0x0408
 #define PCI_VENDOR_ID_ADVANTECH		0x13fe
+#define PCI_DEVICE_ID_INTEL_CE4100_UART 0x2e66
 #define PCI_DEVICE_ID_ADVANTECH_PCI3620	0x3620
 #define PCI_DEVICE_ID_TITAN_200I	0x8028
 #define PCI_DEVICE_ID_TITAN_400I	0x8048
@@ -1072,6 +1089,13 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
 		.subdevice	= PCI_ANY_ID,
 		.setup		= skip_tx_en_setup,
 	},
+	{
+		.vendor		= PCI_VENDOR_ID_INTEL,
+		.device		= PCI_DEVICE_ID_INTEL_CE4100_UART,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+		.setup		= ce4100_serial_setup,
+	},
 	/*
 	 * ITE
 	 */
@@ -1592,6 +1616,7 @@ enum pci_board_num_t {
 	pbn_ADDIDATA_PCIe_2_3906250,
 	pbn_ADDIDATA_PCIe_4_3906250,
 	pbn_ADDIDATA_PCIe_8_3906250,
+	pbn_ce4100_1_115200,
 };
 
 /*
@@ -2281,6 +2306,12 @@ static struct pciserial_board pci_boards[] __devinitdata = {
 		.uart_offset	= 0x200,
 		.first_offset	= 0x1000,
 	},
+	[pbn_ce4100_1_115200] = {
+		.flags		= FL_BASE0,
+		.num_ports	= 1,
+		.base_baud	= 921600,
+		.reg_shift      = 2,
+	},
 };
 
 static const struct pci_device_id softmodem_blacklist[] = {
@@ -3765,6 +3796,11 @@ static struct pci_device_id serial_pci_tbl[] = {
 	{	PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9865,
 		0xA000, 0x3004,
 		0, 0, pbn_b0_bt_4_115200 },
+	/* Intel CE4100 */
+	{	PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CE4100_UART,
+		PCI_ANY_ID,  PCI_ANY_ID, 0, 0,
+		pbn_ce4100_1_115200 },
+
 
 	/*
 	 * These entries match devices with class COMMUNICATION_SERIAL,
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index aff9dcd051c..ec3c214598d 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -1381,6 +1381,16 @@ config SERIAL_MSM_CONSOLE
 	depends on SERIAL_MSM=y
 	select SERIAL_CORE_CONSOLE
 
+config SERIAL_VT8500
+	bool "VIA VT8500 on-chip serial port support"
+	depends on ARM && ARCH_VT8500
+	select SERIAL_CORE
+
+config SERIAL_VT8500_CONSOLE
+	bool "VIA VT8500 serial console support"
+	depends on SERIAL_VT8500=y
+	select SERIAL_CORE_CONSOLE
+
 config SERIAL_NETX
 	tristate "NetX serial port support"
 	depends on ARM && ARCH_NETX
@@ -1632,4 +1642,19 @@ config SERIAL_ALTERA_UART_CONSOLE
 	help
 	  Enable a Altera UART port to be the system console.
 
+config SERIAL_IFX6X60
+        tristate "SPI protocol driver for Infineon 6x60 modem (EXPERIMENTAL)"
+	depends on GPIOLIB && SPI && EXPERIMENTAL
+	help
+	  Support for the IFX6x60 modem devices on Intel MID platforms.
+
+config SERIAL_PCH_UART
+	tristate "Intel EG20T PCH UART"
+	depends on PCI && DMADEVICES
+	select SERIAL_CORE
+	select PCH_DMA
+	help
+	  This driver is for PCH(Platform controller Hub) UART of Intel EG20T
+	  which is an IOH(Input/Output Hub) for x86 embedded processor.
+	  Enabling PCH_DMA, this PCH UART works as DMA mode.
 endmenu
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index c5705765454..8ea92e9c73b 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -80,12 +80,15 @@ obj-$(CONFIG_SERIAL_NETX) += netx-serial.o
 obj-$(CONFIG_SERIAL_OF_PLATFORM) += of_serial.o
 obj-$(CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL) += nwpserial.o
 obj-$(CONFIG_SERIAL_KS8695) += serial_ks8695.o
+obj-$(CONFIG_SERIAL_OMAP) += omap-serial.o
 obj-$(CONFIG_KGDB_SERIAL_CONSOLE) += kgdboc.o
 obj-$(CONFIG_SERIAL_QE) += ucc_uart.o
 obj-$(CONFIG_SERIAL_TIMBERDALE)	+= timbuart.o
 obj-$(CONFIG_SERIAL_GRLIB_GAISLER_APBUART) += apbuart.o
 obj-$(CONFIG_SERIAL_ALTERA_JTAGUART) += altera_jtaguart.o
 obj-$(CONFIG_SERIAL_ALTERA_UART) += altera_uart.o
+obj-$(CONFIG_SERIAL_VT8500) += vt8500_serial.o
 obj-$(CONFIG_SERIAL_MRST_MAX3110)	+= mrst_max3110.o
 obj-$(CONFIG_SERIAL_MFD_HSU)	+= mfd.o
-obj-$(CONFIG_SERIAL_OMAP) += omap-serial.o
+obj-$(CONFIG_SERIAL_IFX6X60)  	+= ifx6x60.o
+obj-$(CONFIG_SERIAL_PCH_UART)	+= pch_uart.o
diff --git a/drivers/serial/apbuart.c b/drivers/serial/apbuart.c
index 767ce9e396c..095a5d56261 100644
--- a/drivers/serial/apbuart.c
+++ b/drivers/serial/apbuart.c
@@ -521,11 +521,12 @@ static struct console grlib_apbuart_console = {
 };
 
 
-static void grlib_apbuart_configure(void);
+static int grlib_apbuart_configure(void);
 
 static int __init apbuart_console_init(void)
 {
-	grlib_apbuart_configure();
+	if (grlib_apbuart_configure())
+		return -ENODEV;
 	register_console(&grlib_apbuart_console);
 	return 0;
 }
@@ -596,57 +597,49 @@ static struct of_platform_driver grlib_apbuart_of_driver = {
 };
 
 
-static void grlib_apbuart_configure(void)
+static int grlib_apbuart_configure(void)
 {
-	static int enum_done;
 	struct device_node *np, *rp;
-	struct uart_port *port = NULL;
 	const u32 *prop;
-	int freq_khz;
-	int v = 0, d = 0;
-	unsigned int addr;
-	int irq, line;
-	struct amba_prom_registers *regs;
-
-	if (enum_done)
-		return;
+	int freq_khz, line = 0;
 
 	/* Get bus frequency */
 	rp = of_find_node_by_path("/");
+	if (!rp)
+		return -ENODEV;
 	rp = of_get_next_child(rp, NULL);
+	if (!rp)
+		return -ENODEV;
 	prop = of_get_property(rp, "clock-frequency", NULL);
+	if (!prop)
+		return -ENODEV;
 	freq_khz = *prop;
 
-	line = 0;
 	for_each_matching_node(np, apbuart_match) {
+		const int *irqs, *ampopts;
+		const struct amba_prom_registers *regs;
+		struct uart_port *port;
+		unsigned long addr;
 
-		int *vendor = (int *) of_get_property(np, "vendor", NULL);
-		int *device = (int *) of_get_property(np, "device", NULL);
-		int *irqs = (int *) of_get_property(np, "interrupts", NULL);
-		int *ampopts = (int *) of_get_property(np, "ampopts", NULL);
-		regs = (struct amba_prom_registers *)
-		    of_get_property(np, "reg", NULL);
-
+		ampopts = of_get_property(np, "ampopts", NULL);
 		if (ampopts && (*ampopts == 0))
 			continue; /* Ignore if used by another OS instance */
-		if (vendor)
-			v = *vendor;
-		if (device)
-			d = *device;
+
+		irqs = of_get_property(np, "interrupts", NULL);
+		regs = of_get_property(np, "reg", NULL);
 
 		if (!irqs || !regs)
-			return;
+			continue;
 
 		grlib_apbuart_nodes[line] = np;
 
 		addr = regs->phys_addr;
-		irq = *irqs;
 
 		port = &grlib_apbuart_ports[line];
 
 		port->mapbase = addr;
 		port->membase = ioremap(addr, sizeof(struct grlib_apbuart_regs_map));
-		port->irq = irq;
+		port->irq = *irqs;
 		port->iotype = UPIO_MEM;
 		port->ops = &grlib_apbuart_ops;
 		port->flags = UPF_BOOT_AUTOCONF;
@@ -658,12 +651,10 @@ static void grlib_apbuart_configure(void)
 		/* We support maximum UART_NR uarts ... */
 		if (line == UART_NR)
 			break;
-
 	}
 
-	enum_done = 1;
-
 	grlib_apbuart_driver.nr = grlib_apbuart_port_nr = line;
+	return line ? 0 : -ENODEV;
 }
 
 static int __init grlib_apbuart_init(void)
@@ -671,7 +662,9 @@ static int __init grlib_apbuart_init(void)
 	int ret;
 
 	/* Find all APBUARTS in device the tree and initialize their ports */
-	grlib_apbuart_configure();
+	ret = grlib_apbuart_configure();
+	if (ret)
+		return ret;
 
 	printk(KERN_INFO "Serial: GRLIB APBUART driver\n");
 
diff --git a/drivers/serial/cpm_uart/cpm_uart.h b/drivers/serial/cpm_uart/cpm_uart.h
index 7274b527a3c..b754dcf0fda 100644
--- a/drivers/serial/cpm_uart/cpm_uart.h
+++ b/drivers/serial/cpm_uart/cpm_uart.h
@@ -76,18 +76,12 @@ struct uart_cpm_port {
 	unsigned char		*tx_buf;
 	unsigned char		*rx_buf;
 	u32			flags;
-	void			(*set_lineif)(struct uart_cpm_port *);
 	struct clk		*clk;
 	u8			brg;
 	uint			 dp_addr;
 	void			*mem_addr;
 	dma_addr_t		 dma_addr;
 	u32			mem_size;
-	/* helpers */
-	int			 baud;
-	int			 bits;
-	/* Keep track of 'odd' SMC2 wirings */
-	int			is_portb;
 	/* wait on close if needed */
 	int			wait_closing;
 	/* value to combine with opcode to form cpm command */
diff --git a/drivers/serial/cpm_uart/cpm_uart_core.c b/drivers/serial/cpm_uart/cpm_uart_core.c
index f2b8adcc6c9..8692ff98fc0 100644
--- a/drivers/serial/cpm_uart/cpm_uart_core.c
+++ b/drivers/serial/cpm_uart/cpm_uart_core.c
@@ -72,6 +72,8 @@ static void cpm_uart_initbd(struct uart_cpm_port *pinfo);
 
 /**************************************************************/
 
+#define HW_BUF_SPD_THRESHOLD    9600
+
 /*
  * Check, if transmit buffers are processed
 */
@@ -503,6 +505,11 @@ static void cpm_uart_set_termios(struct uart_port *port,
 	pr_debug("CPM uart[%d]:set_termios\n", port->line);
 
 	baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk / 16);
+	if (baud <= HW_BUF_SPD_THRESHOLD ||
+	    (pinfo->port.state && pinfo->port.state->port.tty->low_latency))
+		pinfo->rx_fifosize = 1;
+	else
+		pinfo->rx_fifosize = RX_BUF_SIZE;
 
 	/* Character length programmed into the mode register is the
 	 * sum of: 1 start bit, number of data bits, 0 or 1 parity bit,
@@ -594,6 +601,17 @@ static void cpm_uart_set_termios(struct uart_port *port,
 	 */
 	bits++;
 	if (IS_SMC(pinfo)) {
+		/*
+		 * MRBLR can be changed while an SMC/SCC is operating only
+		 * if it is done in a single bus cycle with one 16-bit move
+		 * (not two 8-bit bus cycles back-to-back). This occurs when
+		 * the cp shifts control to the next RxBD, so the change does
+		 * not take effect immediately. To guarantee the exact RxBD
+		 * on which the change occurs, change MRBLR only while the
+		 * SMC/SCC receiver is disabled.
+		 */
+		out_be16(&pinfo->smcup->smc_mrblr, pinfo->rx_fifosize);
+
 		/* Set the mode register.  We want to keep a copy of the
 		 * enables, because we want to put them back if they were
 		 * present.
@@ -604,6 +622,7 @@ static void cpm_uart_set_termios(struct uart_port *port,
 		out_be16(&smcp->smc_smcmr, smcr_mk_clen(bits) | cval |
 		    SMCMR_SM_UART | prev_mode);
 	} else {
+		out_be16(&pinfo->sccup->scc_genscc.scc_mrblr, pinfo->rx_fifosize);
 		out_be16(&sccp->scc_psmr, (sbits << 12) | scval);
 	}
 
diff --git a/drivers/serial/ifx6x60.c b/drivers/serial/ifx6x60.c
new file mode 100644
index 00000000000..ab93763862d
--- /dev/null
+++ b/drivers/serial/ifx6x60.c
@@ -0,0 +1,1406 @@
+/*****************************************************************