From: Eric W. Biederman <ebiederm@xmission.com>

All of the users of proc_clear_tty are compiled into the kernel so exporting
this symbol appears gratuitous.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/char/tty_io.c |    1 -
 1 file changed, 1 deletion(-)

diff -puN drivers/char/tty_io.c~tty-remove-unnecessary-export-of-proc_clear_tty drivers/char/tty_io.c
--- a/drivers/char/tty_io.c~tty-remove-unnecessary-export-of-proc_clear_tty
+++ a/drivers/char/tty_io.c
@@ -3835,7 +3835,6 @@ void proc_clear_tty(struct task_struct *
 	p->signal->tty = NULL;
 	spin_unlock_irq(&p->sighand->siglock);
 }
-EXPORT_SYMBOL(proc_clear_tty);
 
 static struct pid *__proc_set_tty(struct task_struct *tsk, struct tty_struct *tty)
 {
_