Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: (79 commits)
  USB serial: update the console driver
  usb-serial: straighten out serial_open
  usb-serial: add missing tests and debug lines
  usb-serial: rename subroutines
  usb-serial: fix termios initialization logic
  usb-serial: acquire references when a new tty is installed
  usb-serial: change logic of serial lookups
  usb-serial: put subroutines in logical order
  usb-serial: change referencing of port and serial structures
  tty: Char: mxser, use THRE for ASPP_OQUEUE ioctl
  tty: Char: mxser, add support for CP112UL
  uartlite: support shared interrupt lines
  tty: USB: serial/mct_u232, fix tty refcnt
  tty: riscom8, fix tty refcnt
  tty: riscom8, fix shutdown declaration
  TTY: fix typos
  tty: Power: fix suspend vt regression
  tty: vt: use printk_once
  tty: handle VT specific compat ioctls in vt driver
  n_tty: move echoctl check and clean up logic
  ...

10 files changed, 104 insertions, 85 deletions

diff --git a/include/linux/cyclades.h b/include/linux/cyclades.h
index 1fbdea4f08eb..a5049eaf782d 100644
--- a/include/linux/cyclades.h
+++ b/include/linux/cyclades.h
@@ -499,6 +499,7 @@ struct cyclades_card {
 		void __iomem *p9050;
 		struct RUNTIME_9060 __iomem *p9060;
 	} ctl_addr;
+	struct BOARD_CTRL __iomem *board_ctrl;	/* cyz specific */
 	int irq;
 	unsigned int num_chips;	/* 0 if card absent, -1 if Z/PCI, else Y */
 	unsigned int first_line;	/* minor number of first channel on card */
@@ -541,6 +542,15 @@ struct cyclades_port {
 	int                     magic;
 	struct tty_port		port;
 	struct cyclades_card	*card;
+	union {
+		struct {
+			void __iomem *base_addr;
+		} cyy;
+		struct {
+			struct CH_CTRL __iomem	*ch_ctrl;
+			struct BUF_CTRL __iomem	*buf_ctrl;
+		} cyz;
+	} u;
 	int			line;
 	int			flags; 		/* defined in tty.h */
 	int                     type;		/* UART type */
@@ -568,7 +578,6 @@ struct cyclades_port {
 	struct cyclades_idle_stats	idle_stats;
 	struct cyclades_icount	icount;
 	struct completion       shutdown_wait;
-	wait_queue_head_t       delta_msr_wait;
 	int throttle;
 };
 
diff --git a/include/linux/hayesesp.h b/include/linux/hayesesp.h
index 940aeb51d53f..92b08cfe4a75 100644
--- a/include/linux/hayesesp.h
+++ b/include/linux/hayesesp.h
@@ -96,7 +96,6 @@ struct esp_struct {
 	int			xmit_head;
 	int			xmit_tail;
 	int			xmit_cnt;
-	wait_queue_head_t	delta_msr_wait;
 	wait_queue_head_t	break_wait;
 	struct async_icount	icount;	/* kernel counters for the 4 input interrupts */
 	struct hayes_esp_config config; /* port configuration */
diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h
index 29f62e1733ff..ad6bdf5a5970 100644
--- a/include/linux/kfifo.h
+++ b/include/linux/kfifo.h
@@ -38,7 +38,7 @@ extern struct kfifo *kfifo_alloc(unsigned int size, gfp_t gfp_mask,
 				 spinlock_t *lock);
 extern void kfifo_free(struct kfifo *fifo);
 extern unsigned int __kfifo_put(struct kfifo *fifo,
-				unsigned char *buffer, unsigned int len);
+				const unsigned char *buffer, unsigned int len);
 extern unsigned int __kfifo_get(struct kfifo *fifo,
 				unsigned char *buffer, unsigned int len);
 
@@ -77,7 +77,7 @@ static inline void kfifo_reset(struct kfifo *fifo)
  * bytes copied.
  */
 static inline unsigned int kfifo_put(struct kfifo *fifo,
-				     unsigned char *buffer, unsigned int len)
+				const unsigned char *buffer, unsigned int len)
 {
 	unsigned long flags;
 	unsigned int ret;
diff --git a/include/linux/serial.h b/include/linux/serial.h
index e5bb75a63802..c8613c3ff9d3 100644
--- a/include/linux/serial.h
+++ b/include/linux/serial.h
@@ -122,6 +122,7 @@ struct serial_uart_config {
 
 /* Internal flags used only by kernel */
 #define ASYNCB_INITIALIZED	31 /* Serial port was initialized */
+#define ASYNCB_SUSPENDED	30 /* Serial port is suspended */
 #define ASYNCB_NORMAL_ACTIVE	29 /* Normal device is active */
 #define ASYNCB_BOOT_AUTOCONF	28 /* Autoconfigure port on bootup */
 #define ASYNCB_CLOSING		27 /* Serial port is closing */
@@ -133,6 +134,7 @@ struct serial_uart_config {
 #define ASYNCB_FIRST_KERNEL	22
 
 #define ASYNC_HUP_NOTIFY	(1U << ASYNCB_HUP_NOTIFY)
+#define ASYNC_SUSPENDED		(1U << ASYNCB_SUSPENDED)
 #define ASYNC_FOURPORT		(1U << ASYNCB_FOURPORT)
 #define ASYNC_SAK		(1U << ASYNCB_SAK)
 #define ASYNC_SPLIT_TERMIOS	(1U << ASYNCB_SPLIT_TERMIOS)
diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
index d4d2a78ad43e..fb46aba11fb5 100644
--- a/include/linux/serial_8250.h
+++ b/include/linux/serial_8250.h
@@ -22,6 +22,7 @@ struct plat_serial8250_port {
 	void __iomem	*membase;	/* ioremap cookie or NULL */
 	resource_size_t	mapbase;	/* resource base */
 	unsigned int	irq;		/* interrupt number */
+	unsigned long	irqflags;	/* request_irq flags */
 	unsigned int	uartclk;	/* UART clock rate */
 	void            *private_data;
 	unsigned char	regshift;	/* register shift */
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 23d2fb051f97..d58e460844dd 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -20,6 +20,8 @@
 #ifndef LINUX_SERIAL_CORE_H
 #define LINUX_SERIAL_CORE_H
 
+#include <linux/serial.h>
+
 /*
  * The type definitions.  These are from Ted Ts'o's serial.h
  */
@@ -186,7 +188,6 @@
 #include <linux/sysrq.h>
 
 struct uart_port;
-struct uart_info;
 struct serial_struct;
 struct device;
 
@@ -265,6 +266,7 @@ struct uart_port {
 	unsigned int		(*serial_in)(struct uart_port *, int);
 	void			(*serial_out)(struct uart_port *, int, int);
 	unsigned int		irq;			/* irq number */
+	unsigned long		irqflags;		/* irq flags  */
 	unsigned int		uartclk;		/* base uart clock */
 	unsigned int		fifosize;		/* tx fifo size */
 	unsigned char		x_char;			/* xon/xoff char */
@@ -283,7 +285,7 @@ struct uart_port {
 
 	unsigned int		read_status_mask;	/* driver specific */
 	unsigned int		ignore_status_mask;	/* driver specific */
-	struct uart_info	*info;			/* pointer to parent info */
+	struct uart_state	*state;			/* pointer to parent state */
 	struct uart_icount	icount;			/* statistics */
 
 	struct console		*cons;			/* struct console, if any */
@@ -335,52 +337,16 @@ struct uart_port {
 };
 
 /*
- * This is the state information which is only valid when the port
- * is open; it may be cleared the core driver once the device has
- * been closed.  Either the low level driver or the core can modify
- * stuff here.
- */
-typedef unsigned int __bitwise__ uif_t;
-
-struct uart_info {
-	struct tty_port		port;
-	struct circ_buf		xmit;
-	uif_t			flags;
-
-/*
- * Definitions for info->flags.  These are _private_ to serial_core, and
- * are specific to this structure.  They may be queried by low level drivers.
- *
- * FIXME: use the ASY_ definitions
- */
-#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))
-#define UIF_SUSPENDED		((__force uif_t) (1 << 30))
-
-	struct tasklet_struct	tlet;
-	wait_queue_head_t	delta_msr_wait;
-};
-
-/*
  * This is the state information which is persistent across opens.
- * The low level driver must not to touch any elements contained
- * within.
  */
 struct uart_state {
-	unsigned int		close_delay;		/* msec */
-	unsigned int		closing_wait;		/* msec */
-
-#define USF_CLOSING_WAIT_INF	(0)
-#define USF_CLOSING_WAIT_NONE	(~0U)
+	struct tty_port		port;
 
-	int			count;
 	int			pm_state;
-	struct uart_info	info;
-	struct uart_port	*port;
+	struct circ_buf		xmit;
 
-	struct mutex		mutex;
+	struct tasklet_struct	tlet;
+	struct uart_port	*uart_port;
 };
 
 #define UART_XMIT_SIZE	PAGE_SIZE
@@ -461,7 +427,7 @@ int uart_resume_port(struct uart_driver *reg, struct uart_port *port);
 
 static inline int uart_tx_stopped(struct uart_port *port)
 {
-	struct tty_struct *tty = port->info->port.tty;
+	struct tty_struct *tty = port->state->port.tty;
 	if(tty->stopped || tty->hw_stopped)
 		return 1;
 	return 0;
@@ -476,7 +442,7 @@ uart_handle_sysrq_char(struct uart_port *port, unsigned int ch)
 #ifdef SUPPORT_SYSRQ
 	if (port->sysrq) {
 		if (ch && time_before(jiffies, port->sysrq)) {
-			handle_sysrq(ch, port->info->port.tty);
+			handle_sysrq(ch, port->state->port.tty);
 			port->sysrq = 0;
 			return 1;
 		}
@@ -494,7 +460,7 @@ uart_handle_sysrq_char(struct uart_port *port, unsigned int ch)
  */
 static inline int uart_handle_break(struct uart_port *port)
 {
-	struct uart_info *info = port->info;
+	struct uart_state *state = port->state;
 #ifdef SUPPORT_SYSRQ
 	if (port->cons && port->cons->index == port->line) {
 		if (!port->sysrq) {
@@ -505,7 +471,7 @@ static inline int uart_handle_break(struct uart_port *port)
 	}
 #endif
 	if (port->flags & UPF_SAK)
-		do_SAK(info->port.tty);
+		do_SAK(state->port.tty);
 	return 0;
 }
 
@@ -515,22 +481,23 @@ static inline int uart_handle_break(struct uart_port *port)
  *	@status: new carrier detect status, nonzero if active
  */
 static inline void
-uart_handle_dcd_change(struct uart_port *port, unsigned int status)
+uart_handle_dcd_change(struct uart_port *uport, unsigned int status)
 {
-	struct uart_info *info = port->info;
+	struct uart_state *state = uport->state;
+	struct tty_port *port = &state->port;
 
-	port->icount.dcd++;
+	uport->icount.dcd++;
 
 #ifdef CONFIG_HARD_PPS
-	if ((port->flags & UPF_HARDPPS_CD) && status)
+	if ((uport->flags & UPF_HARDPPS_CD) && status)
 		hardpps();
 #endif
 
-	if (info->flags & UIF_CHECK_CD) {
+	if (port->flags & ASYNC_CHECK_CD) {
 		if (status)
-			wake_up_interruptible(&info->port.open_wait);
-		else if (info->port.tty)
-			tty_hangup(info->port.tty);
+			wake_up_interruptible(&port->open_wait);
+		else if (port->tty)
+			tty_hangup(port->tty);
 	}
 }
 
@@ -540,24 +507,24 @@ uart_handle_dcd_change(struct uart_port *port, unsigned int status)
  *	@status: new clear to send status, nonzero if active
  */
 static inline void
-uart_handle_cts_change(struct uart_port *port, unsigned int status)
+uart_handle_cts_change(struct uart_port *uport, unsigned int status)
 {
-	struct uart_info *info = port->info;
-	struct tty_struct *tty = info->port.tty;
+	struct tty_port *port = &uport->state->port;
+	struct tty_struct *tty = port->tty;
 
-	port->icount.cts++;
+	uport->icount.cts++;
 
-	if (info->flags & UIF_CTS_FLOW) {
+	if (port->flags & ASYNC_CTS_FLOW) {
 		if (tty->hw_stopped) {
 			if (status) {
 				tty->hw_stopped = 0;
-				port->ops->start_tx(port);
-				uart_write_wakeup(port);
+				uport->ops->start_tx(uport);
+				uart_write_wakeup(uport);
 			}
 		} else {
 			if (!status) {
 				tty->hw_stopped = 1;
-				port->ops->stop_tx(port);
+				uport->ops->stop_tx(uport);
 			}
 		}
 	}
@@ -569,7 +536,7 @@ static inline void
 uart_insert_char(struct uart_port *port, unsigned int status,
 		 unsigned int overrun, unsigned int ch, unsigned int flag)
 {
-	struct tty_struct *tty = port->info->port.tty;
+	struct tty_struct *tty = port->state->port.tty;
 
 	if ((status & port->ignore_status_mask & ~overrun) == 0)
 		tty_insert_flip_char(tty, ch, flag);
diff --git a/include/linux/tty.h b/include/linux/tty.h
index a916a318004e..f0f43d08d8b8 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -187,7 +187,12 @@ struct tty_port;
 struct tty_port_operations {
 	/* Return 1 if the carrier is raised */
 	int (*carrier_raised)(struct tty_port *port);
+	/* Control the DTR line */
 	void (*dtr_rts)(struct tty_port *port, int raise);
+	/* Called when the last close completes or a hangup finishes
+	   IFF the port was initialized. Do not use to free resources */
+	void (*shutdown)(struct tty_port *port);
+	void (*drop)(struct tty_port *port);
 };
 	
 struct tty_port {
@@ -198,11 +203,12 @@ struct tty_port {
 	int			count;		/* Usage count */
 	wait_queue_head_t	open_wait;	/* Open waiters */
 	wait_queue_head_t	close_wait;	/* Close waiters */
+	wait_queue_head_t	delta_msr_wait;	/* Modem status change */
 	unsigned long		flags;		/* TTY flags ASY_*/
 	struct mutex		mutex;		/* Locking */
 	unsigned char		*xmit_buf;	/* Optional buffer */
-	int			close_delay;	/* Close port delay */
-	int			closing_wait;	/* Delay for output */
+	unsigned int		close_delay;	/* Close port delay */
+	unsigned int		closing_wait;	/* Delay for output */
 	int			drain_delay;	/* Set to zero if no pure time
 						   based drain is needed else
 						   set to size of fifo */
@@ -459,6 +465,12 @@ extern int tty_port_block_til_ready(struct tty_port *port,
 extern int tty_port_close_start(struct tty_port *port,
 				struct tty_struct *tty, struct file *filp);
 extern void tty_port_close_end(struct tty_port *port, struct tty_struct *tty);
+extern void tty_port_close(struct tty_port *port,
+				struct tty_struct *tty, struct file *filp);
+extern inline int tty_port_users(struct tty_port *port)
+{
+	return port->count + port->blocked_open;
+}
 
 extern int tty_register_ldisc(int disc, struct tty_ldisc_ops *new_ldisc);
 extern int tty_unregister_ldisc(int disc);
@@ -524,5 +536,8 @@ extern int pcxe_open(struct tty_struct *tty, struct file *filp);
 extern int vt_ioctl(struct tty_struct *tty, struct file *file,
 		    unsigned int cmd, unsigned long arg);
 
+extern long vt_compat_ioctl(struct tty_struct *tty, struct file * file,
+		     unsigned int cmd, unsigned long arg);
+
 #endif /* __KERNEL__ */
 #endif
diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h
index 0ec50ba62139..7b85e327af91 100644
--- a/include/linux/usb/serial.h
+++ b/include/linux/usb/serial.h
@@ -238,9 +238,8 @@ struct usb_serial_driver {
 	int (*resume)(struct usb_serial *serial);
 
 	/* serial function calls */
-	/* Called by console with tty = NULL and by tty */
-	int  (*open)(struct tty_struct *tty,
-			struct usb_serial_port *port, struct file *filp);
+	/* Called by console and by the tty layer */
+	int  (*open)(struct tty_struct *tty, struct usb_serial_port *port);
 	void (*close)(struct usb_serial_port *port);
 	int  (*write)(struct tty_struct *tty, struct usb_serial_port *port,
 			const unsigned char *buf, int count);
@@ -261,6 +260,9 @@ struct usb_serial_driver {
 	   be an attached tty at this point */
 	void (*dtr_rts)(struct usb_serial_port *port, int on);
 	int  (*carrier_raised)(struct usb_serial_port *port);
+	/* Called by the usb serial hooks to allow the user to rework the
+	   termios state */
+	void (*init_termios)(struct tty_struct *tty);
 	/* USB events */
 	void (*read_int_callback)(struct urb *urb);
 	void (*write_int_callback)(struct urb *urb);
@@ -300,7 +302,7 @@ static inline void usb_serial_console_disconnect(struct usb_serial *serial) {}
 extern struct usb_serial *usb_serial_get_by_index(unsigned int minor);
 extern void usb_serial_put(struct usb_serial *serial);
 extern int usb_serial_generic_open(struct tty_struct *tty,
-		struct usb_serial_port *port, struct file *filp);
+	struct usb_serial_port *port);
 extern int usb_serial_generic_write(struct tty_struct *tty,
 	struct usb_serial_port *port, const unsigned char *buf, int count);
 extern void usb_serial_generic_close(struct usb_serial_port *port);
diff --git a/include/linux/vt.h b/include/linux/vt.h
index 02c1c0288770..7afca0d72139 100644
--- a/include/linux/vt.h
+++ b/include/linux/vt.h
@@ -1,17 +1,6 @@
 #ifndef _LINUX_VT_H
 #define _LINUX_VT_H
 
-#ifdef __KERNEL__
-struct notifier_block;
-
-struct vt_notifier_param {
-	struct vc_data *vc;	/* VC on which the update happened */
-	unsigned int c;		/* Printed char */
-};
-
-extern int register_vt_notifier(struct notifier_block *nb);
-extern int unregister_vt_notifier(struct notifier_block *nb);
-#endif
 
 /*
  * These constants are also useful for user-level apps (e.g., VC
@@ -74,4 +63,25 @@ struct vt_consize {
 #define VT_UNLOCKSWITCH 0x560C  /* allow vt switching */
 #define VT_GETHIFONTMASK 0x560D  /* return hi font mask */
 
+struct vt_event {
+	unsigned int event;
+#define VT_EVENT_SWITCH		0x0001	/* Console switch */
+#define VT_EVENT_BLANK		0x0002	/* Screen blank */
+#define VT_EVENT_UNBLANK	0x0004	/* Screen unblank */
+#define VT_EVENT_RESIZE		0x0008	/* Resize display */
+#define VT_MAX_EVENT		0x000F
+	unsigned int old;		/* Old console */
+	unsigned int new;		/* New console (if changing) */
+	unsigned int pad[4];		/* Padding for expansion */
+};
+
+#define VT_WAITEVENT	0x560E	/* Wait for an event */
+
+struct vt_setactivate {
+	unsigned int console;
+	struct vt_mode mode;
+};
+
+#define VT_SETACTIVATE	0x560F	/* Activate and set the mode of a console */
+
 #endif /* _LINUX_VT_H */
diff --git a/include/linux/vt_kern.h b/include/linux/vt_kern.h
index 2f1113467f70..c0c4e1103a73 100644
--- a/include/linux/vt_kern.h
+++ b/include/linux/vt_kern.h
@@ -13,6 +13,7 @@
 #include <linux/console_struct.h>
 #include <linux/mm.h>
 #include <linux/consolemap.h>
+#include <linux/notifier.h>
 
 /*
  * Presently, a lot of graphics programs do not restore the contents of
@@ -91,7 +92,8 @@ int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);
 #endif
 
 /* vt.c */
-int vt_waitactive(int vt);
+void vt_event_post(unsigned int event, unsigned int old, unsigned int new);
+int vt_waitactive(int n);
 void change_console(struct vc_data *new_vc);
 void reset_vc(struct vc_data *vc);
 extern int unbind_con_driver(const struct consw *csw, int first, int last,
@@ -116,4 +118,16 @@ struct vt_spawn_console {
 };
 extern struct vt_spawn_console vt_spawn_con;
 
+extern int vt_move_to_console(unsigned int vt, int alloc);
+
+/* Interfaces for VC notification of character events (for accessibility etc) */
+
+struct vt_notifier_param {
+	struct vc_data *vc;	/* VC on which the update happened */
+	unsigned int c;		/* Printed char */
+};
+
+extern int register_vt_notifier(struct notifier_block *nb);
+extern int unregister_vt_notifier(struct notifier_block *nb);
+
 #endif /* _VT_KERN_H */