tiocmset: kill the file pointer argument

Doing tiocmget was such fun we should do tiocmset as well for the same
reasons

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/isdn/gigaset/ser-gigaset.c b/drivers/isdn/gigaset/ser-gigaset.c
index 0ef09d0..86a5c4f 100644
--- a/drivers/isdn/gigaset/ser-gigaset.c
+++ b/drivers/isdn/gigaset/ser-gigaset.c
@@ -440,7 +440,7 @@
 	if (!set && !clear)
 		return 0;
 	gig_dbg(DEBUG_IF, "tiocmset set %x clear %x", set, clear);
-	return tty->ops->tiocmset(tty, NULL, set, clear);
+	return tty->ops->tiocmset(tty, set, clear);
 }
 
 static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag)