tty: Remove more special casing and out of place code

Carry on pushing code out of tty_io when it belongs to other drivers. I'm
not 100% happy with some of this and it will be worth revisiting some of the
exports later when the restructuring work is done.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 6e39c70..6cc7ccc 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -314,6 +314,8 @@
 extern void console_init(void);
 extern int vcs_init(void);
 
+extern struct class *tty_class;
+
 /**
  *	tty_kref_get		-	get a tty reference
  *	@tty: tty device
@@ -398,6 +400,10 @@
 extern dev_t tty_devnum(struct tty_struct *tty);
 extern void proc_clear_tty(struct task_struct *p);
 extern struct tty_struct *get_current_tty(void);
+extern void tty_default_fops(struct file_operations *fops);
+extern int tty_init_dev(struct tty_driver *driver, int idx,
+			struct tty_struct **ret_tty, int first_ok);
+extern void tty_release_dev(struct file *filp);
 
 extern struct mutex tty_mutex;