tty: const: constify remaining tty_operations

[safe/jmp/linux-2.6] / drivers / char / pcmcia / ipwireless / tty.c

diff --git a/drivers/char/pcmcia/ipwireless/tty.c b/drivers/char/pcmcia/ipwireless/tty.c
index 569f2f7..2bb7874 100644 (file)
--- a/drivers/char/pcmcia/ipwireless/tty.c
+++ b/drivers/char/pcmcia/ipwireless/tty.c
@@ -320,10 +320,10 @@ static int ipw_chars_in_buffer(struct tty_struct *linux_tty)
        struct ipw_tty *tty = linux_tty->driver_data;
 
        if (!tty)
-               return -ENODEV;
+               return 0;
 
        if (!tty->open_count)
-               return -EINVAL;
+               return 0;
 
        return tty->tx_bytes_queued;
 }
@@ -603,7 +603,7 @@ void ipwireless_tty_free(struct ipw_tty *tty)
        }
 }
 
-static struct tty_operations tty_ops = {
+static const struct tty_operations tty_ops = {
        .open = ipw_open,
        .close = ipw_close,
        .hangup = ipw_hangup,