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TTY: isdn, define tty_port_operations

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Add there .carrier_raised. It is taken from current block_til_ready.
We will need tty_port->ops->carrier_raised for
tty_port_block_til_ready helper.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Karsten Keil <isdn@linux-pingi.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2012-04-02 13:54:01 +02:00 committed by Greg Kroah-Hartman
parent 4330d663fe
commit 042b9e7c2b
1 changed files with 13 additions and 1 deletions
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14
drivers/isdn/i4l/isdn_tty.c
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@ -1485,6 +1485,7 @@ isdn_tty_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
* isdn_tty_open() and friends
* ------------------------------------------------------------
*/
static int
isdn_tty_block_til_ready(struct tty_struct *tty, struct file *filp, modem_info *info)
{
@ -1552,7 +1553,7 @@ isdn_tty_block_til_ready(struct tty_struct *tty, struct file *filp, modem_info *
break;
}
if (!(port->flags & ASYNC_CLOSING) &&
(do_clocal || (info->msr & UART_MSR_DCD))) {
(do_clocal || tty_port_carrier_raised(port))) {
break;
}
if (signal_pending(current)) {
@ -1848,6 +1849,16 @@ static const struct tty_operations modem_ops = {
.tiocmset = isdn_tty_tiocmset,
};
static int isdn_tty_carrier_raised(struct tty_port *port)
{
modem_info *info = container_of(port, modem_info, port);
return info->msr & UART_MSR_DCD;
}
static const struct tty_port_operations isdn_tty_port_ops = {
.carrier_raised = isdn_tty_carrier_raised,
};
int
isdn_tty_modem_init(void)
{
@ -1884,6 +1895,7 @@ isdn_tty_modem_init(void)
}
#endif
tty_port_init(&info->port);
info->port.ops = &isdn_tty_port_ops;
spin_lock_init(&info->readlock);
sprintf(info->last_cause, "0000");
sprintf(info->last_num, "none");