tty: Move the vt_tty field from the vc_data into the standard tty_port
Alan Cox [Tue, 1 Jun 2010 20:52:56 +0000 (22:52 +0200)]
This takes all the tty references through the expected interface points so
we can refcount them.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/char/keyboard.c
drivers/char/vt.c
drivers/char/vt_ioctl.c
include/linux/console_struct.h

index 25be210..a7ca752 100644 (file)
@@ -299,7 +299,7 @@ int kbd_rate(struct kbd_repeat *rep)
  */
 static void put_queue(struct vc_data *vc, int ch)
 {
-       struct tty_struct *tty = vc->vc_tty;
+       struct tty_struct *tty = vc->port.tty;
 
        if (tty) {
                tty_insert_flip_char(tty, ch, 0);
@@ -309,7 +309,7 @@ static void put_queue(struct vc_data *vc, int ch)
 
 static void puts_queue(struct vc_data *vc, char *cp)
 {
-       struct tty_struct *tty = vc->vc_tty;
+       struct tty_struct *tty = vc->port.tty;
 
        if (!tty)
                return;
@@ -485,7 +485,7 @@ static void fn_show_ptregs(struct vc_data *vc)
 
 static void fn_hold(struct vc_data *vc)
 {
-       struct tty_struct *tty = vc->vc_tty;
+       struct tty_struct *tty = vc->port.tty;
 
        if (rep || !tty)
                return;
@@ -563,7 +563,7 @@ static void fn_inc_console(struct vc_data *vc)
 
 static void fn_send_intr(struct vc_data *vc)
 {
-       struct tty_struct *tty = vc->vc_tty;
+       struct tty_struct *tty = vc->port.tty;
 
        if (!tty)
                return;
@@ -1162,7 +1162,7 @@ static void kbd_keycode(unsigned int keycode, int down, int hw_raw)
        struct keyboard_notifier_param param = { .vc = vc, .value = keycode, .down = down };
        int rc;
 
-       tty = vc->vc_tty;
+       tty = vc->port.tty;
 
        if (tty && (!tty->driver_data)) {
                /* No driver data? Strange. Okay we fix it then. */
index 295af82..c734f9b 100644 (file)
@@ -973,12 +973,12 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
  *     Resize a virtual console as seen from the console end of things. We
  *     use the common vc_do_resize methods to update the structures. The
  *     caller must hold the console sem to protect console internals and
- *     vc->vc_tty
+ *     vc->port.tty
  */
 
 int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int rows)
 {
-       return vc_do_resize(vc->vc_tty, vc, cols, rows);
+       return vc_do_resize(vc->port.tty, vc, cols, rows);
 }
 
 /**
@@ -2807,12 +2807,12 @@ static int con_open(struct tty_struct *tty, struct file *filp)
                        struct vc_data *vc = vc_cons[currcons].d;
 
                        /* Still being freed */
-                       if (vc->vc_tty) {
+                       if (vc->port.tty) {
                                release_console_sem();
                                return -ERESTARTSYS;
                        }
                        tty->driver_data = vc;
-                       vc->vc_tty = tty;
+                       vc->port.tty = tty;
 
                        if (!tty->winsize.ws_row && !tty->winsize.ws_col) {
                                tty->winsize.ws_row = vc_cons[currcons].d->vc_rows;
@@ -2840,7 +2840,7 @@ static void con_shutdown(struct tty_struct *tty)
        struct vc_data *vc = tty->driver_data;
        BUG_ON(vc == NULL);
        acquire_console_sem();
-       vc->vc_tty = NULL;
+       vc->port.tty = NULL;
        release_console_sem();
        tty_shutdown(tty);
 }
index cb19dbc..72dcfb2 100644 (file)
@@ -1369,7 +1369,7 @@ void vc_SAK(struct work_struct *work)
        acquire_console_sem();
        vc = vc_con->d;
        if (vc) {
-               tty = vc->vc_tty;
+               tty = vc->port.tty;
                /*
                 * SAK should also work in all raw modes and reset
                 * them properly.
index 25bf67f..7f0c329 100644 (file)
@@ -58,7 +58,6 @@ struct vc_data {
        /* VT terminal data */
        unsigned int    vc_state;               /* Escape sequence parser state */
        unsigned int    vc_npar,vc_par[NPAR];   /* Parameters of current escape sequence */
-       struct tty_struct *vc_tty;              /* TTY we are attached to */
        /* data for manual vt switching */
        struct vt_mode  vt_mode;
        struct pid      *vt_pid;