istallion: Use helpers

The ldisc needs to be referenced properly when used. The tty layer has a
helper for this which should have been used but this driver got missed
originally.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c
index 63d22b5ebc0d..f9ebcd41d8e5 100644
--- a/drivers/char/istallion.c
+++ b/drivers/char/istallion.c
@@ -925,8 +925,7 @@ static void stli_close(struct tty_struct *tty, struct file *filp)
         clear_bit(ST_TXBUSY, &portp->state);
         clear_bit(ST_RXSTOP, &portp->state);
         set_bit(TTY_IO_ERROR, &tty->flags);
-        if (tty->ldisc.ops->flush_buffer)
-                (tty->ldisc.ops->flush_buffer)(tty);
+        tty_ldisc_flush(tty);
         set_bit(ST_DOFLUSHRX, &portp->state);
         stli_flushbuffer(tty);