rio: addition has higher precedence than ?:

Signed-off-by: NRoel Kluin <roel.kluin@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NAlan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/char/rio/rio_linux.c

@@ -333,7 +333,7 @@ void rio_copy_to_card(void *from, void __iomem *to, int len)
 
 int rio_minor(struct tty_struct *tty)
 {
-	return tty->index + (tty->driver == rio_driver) ? 0 : 256;
+	return tty->index + ((tty->driver == rio_driver) ? 0 : 256);
 }
 
 static int rio_set_real_termios(void *ptr)