tty: Document c_line == N_TTY initial condition

The line discipline id is stored in the tty's termios; document the
implicit initial value of N_TTY.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index d3ecbb5..3c90ad4 100644 (file)
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -123,7 +123,8 @@ struct ktermios tty_std_termios = { /* for the benefit of tty drivers  */
                   ECHOCTL | ECHOKE | IEXTEN,
        .c_cc = INIT_C_CC,
        .c_ispeed = 38400,
-       .c_ospeed = 38400
+       .c_ospeed = 38400,
+       /* .c_line = N_TTY, */
 };
 
 EXPORT_SYMBOL(tty_std_termios);