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: (48 commits)
  serial: 8250_pci: add support for Cronyx Omega PCI multiserial board.
  tty/serial: Fix break handling for PORT_TEGRA
  tty/serial: Add explicit PORT_TEGRA type
  n_tracerouter and n_tracesink ldisc additions.
  Intel PTI implementaiton of MIPI 1149.7.
  Kernel documentation for the PTI feature.
  export kernel call get_task_comm().
  tty: Remove to support serial for S5P6442
  pch_phub: Support new device ML7223
  8250_pci: Add support for the Digi/IBM PCIe 2-port Adapter
  ASoC: Update cx20442 for TTY API change
  pch_uart: Support new device ML7223 IOH
  parport: Use request_muxed_region for IT87 probe and lock
  tty/serial: add support for Xilinx PS UART
  n_gsm: Use print_hex_dump_bytes
  drivers/tty/moxa.c: Put correct tty value
  TTY: tty_io, annotate locking functions
  TTY: serial_core, remove superfluous set_task_state
  TTY: serial_core, remove invalid test
  Char: moxa, fix locking in moxa_write
  ...

Fix up trivial conflicts in drivers/bluetooth/hci_ldisc.c and
drivers/tty/serial/Makefile.

I did the hci_ldisc thing as an evil merge, cleaning things up.

77 files changed, 1975 insertions, 435 deletions

diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index 3fd7199301b..bd7cc052799 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -319,3 +319,34 @@ config N_GSM
 	  This line discipline provides support for the GSM MUX protocol and
 	  presents the mux as a set of 61 individual tty devices.
 
+config TRACE_ROUTER
+	tristate "Trace data router for MIPI P1149.7 cJTAG standard"
+	depends on TRACE_SINK
+	default n
+	help
+	  The trace router uses the Linux tty line discipline framework to
+	  route trace data coming from a tty port (say UART for example) to
+	  the trace sink line discipline driver and to another tty port (say
+	  USB). This is part of a solution for the MIPI P1149.7, compact JTAG,
+	  standard, which is for debugging mobile devices. The PTI driver in
+	  drivers/misc/pti.c defines the majority of this MIPI solution.
+
+	  You should select this driver if the target kernel is meant for
+	  a mobile device containing a modem.  Then you will need to select
+	  "Trace data sink for MIPI P1149.7 cJTAG standard" line discipline
+	  driver.
+
+config TRACE_SINK
+	tristate "Trace data sink for MIPI P1149.7 cJTAG standard"
+	default n
+	help
+	  The trace sink uses the Linux line discipline framework to receive
+	  trace data coming from the trace router line discipline driver
+	  to a user-defined tty port target, like USB.
+	  This is to provide a way to extract modem trace data on
+	  devices that do not have a PTI HW module, or just need modem
+	  trace data to come out of a different HW output port.
+	  This is part of a solution for the P1149.7, compact JTAG, standard.
+
+	  If you select this option, you need to select
+	  "Trace data router for MIPI P1149.7 cJTAG standard".
diff --git a/drivers/tty/Makefile b/drivers/tty/Makefile
index 690522fcb33..ea89b0bd15f 100644
--- a/drivers/tty/Makefile
+++ b/drivers/tty/Makefile
@@ -6,6 +6,8 @@ obj-$(CONFIG_AUDIT)		+= tty_audit.o
 obj-$(CONFIG_MAGIC_SYSRQ)	+= sysrq.o
 obj-$(CONFIG_N_HDLC)		+= n_hdlc.o
 obj-$(CONFIG_N_GSM)		+= n_gsm.o
+obj-$(CONFIG_TRACE_ROUTER)	+= n_tracerouter.o
+obj-$(CONFIG_TRACE_SINK)	+= n_tracesink.o
 obj-$(CONFIG_R3964)		+= n_r3964.o
 
 obj-y				+= vt/
diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index f214e502247..220579592c2 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -1,6 +1,4 @@
 /*
- *  linux/drivers/char/amiserial.c
- *
  * Serial driver for the amiga builtin port.
  *
  * This code was created by taking serial.c version 4.30 from kernel
diff --git a/drivers/tty/cyclades.c b/drivers/tty/cyclades.c
index c99728f0cd9..bfa05e80182 100644
--- a/drivers/tty/cyclades.c
+++ b/drivers/tty/cyclades.c
@@ -3,8 +3,6 @@
 #undef	Z_EXT_CHARS_IN_BUFFER
 
 /*
- *  linux/drivers/char/cyclades.c
- *
  * This file contains the driver for the Cyclades async multiport
  * serial boards.
  *
@@ -1445,13 +1443,11 @@ static void cy_shutdown(struct cyclades_port *info, struct tty_struct *tty)
 {
 	struct cyclades_card *card;
 	unsigned long flags;
-	int channel;
 
 	if (!(info->port.flags & ASYNC_INITIALIZED))
 		return;
 
 	card = info->card;
-	channel = info->line - card->first_line;
 	if (!cy_is_Z(card)) {
 		spin_lock_irqsave(&card->card_lock, flags);
 
@@ -1476,6 +1472,7 @@ static void cy_shutdown(struct cyclades_port *info, struct tty_struct *tty)
 		spin_unlock_irqrestore(&card->card_lock, flags);
 	} else {
 #ifdef CY_DEBUG_OPEN
+		int channel = info->line - card->first_line;
 		printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, "
 			"base_addr %p\n", card, channel, card->base_addr);
 #endif
diff --git a/drivers/tty/ipwireless/Makefile b/drivers/tty/ipwireless/Makefile
index db80873d7f2..fe2e1730986 100644
--- a/drivers/tty/ipwireless/Makefile
+++ b/drivers/tty/ipwireless/Makefile
@@ -1,6 +1,4 @@
 #
-# drivers/char/pcmcia/ipwireless/Makefile
-#
 # Makefile for the IPWireless driver
 #
 
diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c
index 35b0c38590e..ba679ce0a77 100644
--- a/drivers/tty/moxa.c
+++ b/drivers/tty/moxa.c
@@ -371,7 +371,7 @@ static int moxa_ioctl(struct tty_struct *tty,
 					tmp.cflag = p->cflag;
 				else
 					tmp.cflag = ttyp->termios->c_cflag;
-				tty_kref_put(tty);
+				tty_kref_put(ttyp);
 copy:
 				if (copy_to_user(argm, &tmp, sizeof(tmp)))
 					return -EFAULT;
@@ -1129,7 +1129,6 @@ static void moxa_shutdown(struct tty_port *port)
 	struct moxa_port *ch = container_of(port, struct moxa_port, port);
         MoxaPortDisable(ch);
 	MoxaPortFlushData(ch, 2);
-	clear_bit(ASYNCB_NORMAL_ACTIVE, &port->flags);
 }
 
 static int moxa_carrier_raised(struct tty_port *port)
@@ -1155,7 +1154,6 @@ static int moxa_open(struct tty_struct *tty, struct file *filp)
 	struct moxa_board_conf *brd;
 	struct moxa_port *ch;
 	int port;
-	int retval;
 
 	port = tty->index;
 	if (port == MAX_PORTS) {
@@ -1190,10 +1188,7 @@ static int moxa_open(struct tty_struct *tty, struct file *filp)
 	mutex_unlock(&ch->port.mutex);
 	mutex_unlock(&moxa_openlock);
 
-	retval = tty_port_block_til_ready(&ch->port, tty, filp);
-	if (retval == 0)
-	        set_bit(ASYNCB_NORMAL_ACTIVE, &ch->port.flags);
-	return retval;
+	return tty_port_block_til_ready(&ch->port, tty, filp);
 }
 
 static void moxa_close(struct tty_struct *tty, struct file *filp)
@@ -1207,14 +1202,15 @@ static int moxa_write(struct tty_struct *tty,
 		      const unsigned char *buf, int count)
 {
 	struct moxa_port *ch = tty->driver_data;
+	unsigned long flags;
 	int len;
 
 	if (ch == NULL)
 		return 0;
 
-	spin_lock_bh(&moxa_lock);
+	spin_lock_irqsave(&moxa_lock, flags);
 	len = MoxaPortWriteData(tty, buf, count);
-	spin_unlock_bh(&moxa_lock);
+	spin_unlock_irqrestore(&moxa_lock, flags);
 
 	set_bit(LOWWAIT, &ch->statusflags);
 	return len;
@@ -1281,10 +1277,8 @@ static int moxa_tiocmset(struct tty_struct *tty,
 			 unsigned int set, unsigned int clear)
 {
 	struct moxa_port *ch;
-	int port;
 	int dtr, rts;
 
-	port = tty->index;
 	mutex_lock(&moxa_openlock);
 	ch = tty->driver_data;
 	if (!ch) {
@@ -1756,11 +1750,9 @@ static int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio,
 		speed_t baud)
 {
 	void __iomem *ofsAddr;
-	tcflag_t cflag;
 	tcflag_t mode = 0;
 
 	ofsAddr = port->tableAddr;
-	cflag = termio->c_cflag;	/* termio->c_cflag */
 
 	mode = termio->c_cflag & CSIZE;
 	if (mode == CS5)
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 77623b93653..a4c42a75a3b 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -526,19 +526,6 @@ static int gsm_stuff_frame(const u8 *input, u8 *output, int len)
 	return olen;
 }
 
-static void hex_packet(const unsigned char *p, int len)
-{
-	int i;
-	for (i = 0; i < len; i++) {
-		if (i && (i % 16) == 0) {
-			pr_cont("\n");
-			pr_debug("");
-		}
-		pr_cont("%02X ", *p++);
-	}
-	pr_cont("\n");
-}
-
 /**
  *	gsm_send	-	send a control frame
  *	@gsm: our GSM mux
@@ -685,10 +672,10 @@ static void gsm_data_kick(struct gsm_mux *gsm)
 			len = msg->len + 2;
 		}
 
-		if (debug & 4) {
-			pr_debug("gsm_data_kick:\n");
-			hex_packet(gsm->txframe, len);
-		}
+		if (debug & 4)
+			print_hex_dump_bytes("gsm_data_kick: ",
+					     DUMP_PREFIX_OFFSET,
+					     gsm->txframe, len);
 
 		if (gsm->output(gsm, gsm->txframe + skip_sof,
 						len - skip_sof) < 0)
@@ -2095,10 +2082,9 @@ static int gsmld_output(struct gsm_mux *gsm, u8 *data, int len)
 		set_bit(TTY_DO_WRITE_WAKEUP, &gsm->tty->flags);
 		return -ENOSPC;
 	}
-	if (debug & 4) {
-		pr_debug("-->%d bytes out\n", len);
-		hex_packet(data, len);
-	}
+	if (debug & 4)
+		print_hex_dump_bytes("gsmld_output: ", DUMP_PREFIX_OFFSET,
+				     data, len);
 	gsm->tty->ops->write(gsm->tty, data, len);
 	return len;
 }
@@ -2142,8 +2128,8 @@ static void gsmld_detach_gsm(struct tty_struct *tty, struct gsm_mux *gsm)
 	gsm->tty = NULL;
 }
 
-static void gsmld_receive_buf(struct tty_struct *tty, const unsigned char *cp,
-			      char *fp, int count)
+static unsigned int gsmld_receive_buf(struct tty_struct *tty,
+		const unsigned char *cp, char *fp, int count)
 {
 	struct gsm_mux *gsm = tty->disc_data;
 	const unsigned char *dp;
@@ -2152,10 +2138,9 @@ static void gsmld_receive_buf(struct tty_struct *tty, const unsigned char *cp,
 	char buf[64];
 	char flags;
 
-	if (debug & 4) {
-		pr_debug("Inbytes %dd\n", count);
-		hex_packet(cp, count);
-	}
+	if (debug & 4)
+		print_hex_dump_bytes("gsmld_receive: ", DUMP_PREFIX_OFFSET,
+				     cp, count);
 
 	for (i = count, dp = cp, f = fp; i; i--, dp++) {
 		flags = *f++;
@@ -2177,6 +2162,8 @@ static void gsmld_receive_buf(struct tty_struct *tty, const unsigned char *cp,
 	}
 	/* FASYNC if needed ? */
 	/* If clogged call tty_throttle(tty); */
+
+	return count;
 }
 
 /**
diff --git a/drivers/tty/n_hdlc.c b/drivers/tty/n_hdlc.c
index cea56033b34..cac666314ae 100644
--- a/drivers/tty/n_hdlc.c
+++ b/drivers/tty/n_hdlc.c
@@ -188,8 +188,8 @@ static unsigned int n_hdlc_tty_poll(struct tty_struct *tty, struct file *filp,
 				    poll_table *wait);
 static int n_hdlc_tty_open(struct tty_struct *tty);
 static void n_hdlc_tty_close(struct tty_struct *tty);
-static void n_hdlc_tty_receive(struct tty_struct *tty, const __u8 *cp,
-			       char *fp, int count);
+static unsigned int n_hdlc_tty_receive(struct tty_struct *tty,
+		const __u8 *cp, char *fp, int count);
 static void n_hdlc_tty_wakeup(struct tty_struct *tty);
 
 #define bset(p,b)	((p)[(b) >> 5] |= (1 << ((b) & 0x1f)))
@@ -509,8 +509,8 @@ static void n_hdlc_tty_wakeup(struct tty_struct *tty)
  * Called by tty low level driver when receive data is available. Data is
  * interpreted as one HDLC frame.
  */
-static void n_hdlc_tty_receive(struct tty_struct *tty, const __u8 *data,
-			       char *flags, int count)
+static unsigned int n_hdlc_tty_receive(struct tty_struct *tty,
+		const __u8 *data, char *flags, int count)
 {
 	register struct n_hdlc *n_hdlc = tty2n_hdlc (tty);
 	register struct n_hdlc_buf *buf;
@@ -521,20 +521,20 @@ static void n_hdlc_tty_receive(struct tty_struct *tty, const __u8 *data,
 		
 	/* This can happen if stuff comes in on the backup tty */
 	if (!n_hdlc || tty != n_hdlc->tty)
-		return;
+		return -ENODEV;
 		
 	/* verify line is using HDLC discipline */
 	if (n_hdlc->magic != HDLC_MAGIC) {
 		printk("%s(%d) line not using HDLC discipline\n",
 			__FILE__,__LINE__);
-		return;
+		return -EINVAL;
 	}
 	
 	if ( count>maxframe ) {
 		if (debuglevel >= DEBUG_LEVEL_INFO)	
 			printk("%s(%d) rx count>maxframesize, data discarded\n",
 			       __FILE__,__LINE__);
-		return;
+		return -EINVAL;
 	}
 
 	/* get a free HDLC buffer */	
@@ -550,7 +550,7 @@ static void n_hdlc_tty_receive(struct tty_struct *tty, const __u8 *data,
 		if (debuglevel >= DEBUG_LEVEL_INFO)	
 			printk("%s(%d) no more rx buffers, data discarded\n",
 			       __FILE__,__LINE__);
-		return;
+		return -EINVAL;
 	}
 		
 	/* copy received data to HDLC buffer */
@@ -565,6 +565,8 @@ static void n_hdlc_tty_receive(struct tty_struct *tty, const __u8 *data,
 	if (n_hdlc->tty->fasync != NULL)
 		kill_fasync (&n_hdlc->tty->fasync, SIGIO, POLL_IN);
 
+	return count;
+
 }	/* end of n_hdlc_tty_receive() */
 
 /**
diff --git a/drivers/tty/n_r3964.c b/drivers/tty/n_r3964.c
index 5c6c31459a2..a4bc39c21a4 100644
--- a/drivers/tty/n_r3964.c
+++ b/drivers/tty/n_r3964.c
@@ -139,8 +139,8 @@ static int r3964_ioctl(struct tty_struct *tty, struct file *file,
 static void r3964_set_termios(struct tty_struct *tty, struct ktermios *old);
 static unsigned int r3964_poll(struct tty_struct *tty, struct file *file,
 		struct poll_table_struct *wait);
-static void r3964_receive_buf(struct tty_struct *tty, const unsigned char *cp,
-		char *fp, int count);
+static unsigned int r3964_receive_buf(struct tty_struct *tty,
+		const unsigned char *cp, char *fp, int count);
 
 static struct tty_ldisc_ops tty_ldisc_N_R3964 = {
 	.owner = THIS_MODULE,
@@ -1239,8 +1239,8 @@ static unsigned int r3964_poll(struct tty_struct *tty, struct file *file,
 	return result;
 }
 
-static void r3964_receive_buf(struct tty_struct *tty, const unsigned char *cp,
-			char *fp, int count)
+static unsigned int r3964_receive_buf(struct tty_struct *tty,
+		const unsigned char *cp, char *fp, int count)
 {
 	struct r3964_info *pInfo = tty->disc_data;
 	const unsigned char *p;
@@ -1257,6 +1257,8 @@ static void r3964_receive_buf(struct tty_struct *tty, const unsigned char *cp,
 		}
 
 	}
+
+	return count;
 }
 
 MODULE_LICENSE("GPL");
diff --git a/drivers/tty/n_tracerouter.c b/drivers/tty/n_tracerouter.c
new file mode 100644
index 00000000000..1f063d3aa32
--- /dev/null
+++ b/drivers/tty/n_tracerouter.c
@@ -0,0 +1,243 @@
+/*
+ *  n_tracerouter.c - Trace data router through tty space
+ *
+ *  Copyright (C) Intel 2011
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License 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.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This trace router uses the Linux line discipline framework to route
+ * trace data coming from a HW Modem to a PTI (Parallel Trace Module) port.
+ * The solution is not specific to a HW modem and this line disciple can
+ * be used to route any stream of data in kernel space.
+ * This is part of a solution for the P1149.7, compact JTAG, standard.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/ioctl.h>
+#include <linux/tty.h>
+#include <linux/tty_ldisc.h>
+#include <linux/errno.h>