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 */