1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/tty.h b/include/linux/tty.h
index 0ad68889fc1a..64c12a3e65f0 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -579,6 +579,8 @@ extern int __init tty_init(void);
 /* tty_ioctl.c */
 extern int n_tty_ioctl_helper(struct tty_struct *tty, struct file *file,
                        unsigned int cmd, unsigned long arg);
+extern long n_tty_compat_ioctl_helper(struct tty_struct *tty, struct file *file,
+                       unsigned int cmd, unsigned long arg);
 
 /* serial.c */