tty: Clean up the tty_init_dev changes further

[safe/jmp/linux-2.6] / include / linux / tty_driver.h

diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index 2322313..2c5c35c 100644 (file)
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -7,6 +7,14 @@
  * defined; unless noted otherwise, they are optional, and can be
  * filled in with a null pointer.
  *
+ * struct tty_struct * (*lookup)(struct tty_driver *self, int idx)
+ *
+ *     Return the tty device corresponding to idx, NULL if there is not
+ *     one currently in use and an ERR_PTR value on error. Called under
+ *     tty_mutex (for now!)
+ *
+ *     Optional method. Default behaviour is to use the ttys array
+ *
  * int  (*open)(struct tty_struct * tty, struct file * filp);
  *
  *     This routine is called when a particular tty device is opened.
@@ -203,6 +211,7 @@ struct tty_struct;
 struct tty_driver;
 
 struct tty_operations {
+       struct tty_struct * (*lookup)(struct tty_driver *driver, int idx);
        int  (*open)(struct tty_struct * tty, struct file * filp);
        void (*close)(struct tty_struct * tty, struct file * filp);
        void (*shutdown)(struct tty_struct *tty);