efirtc: push down the BKL

[firefly-linux-kernel-4.4.55.git] / drivers / char / tty_io.c

diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index fa48dba5ba5e94ff5833f16c8e4e758bb1ffbd66..6f4d856df987e745a46f2a407a7e2706feb1ae57 100644 (file)
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -1119,19 +1119,6 @@ int tty_hung_up_p(struct file *filp)
 
 EXPORT_SYMBOL(tty_hung_up_p);
 
-/**
- *     is_tty  -       checker whether file is a TTY
- *     @filp:          file handle that may be a tty
- *
- *     Check if the file handle is a tty handle.
- */
-
-int is_tty(struct file *filp)
-{
-       return filp->f_op->read == tty_read
-               || filp->f_op->read == hung_up_tty_read;
-}
-
 static void session_clear_tty(struct pid *session)
 {
        struct task_struct *p;