tty: Replace ASYNC_CHECK_CD and update atomically

Replace ASYNC_CHECK_CD bit in the tty_port::flags field with
TTY_PORT_CHECK_CD bit in the tty_port::iflags field. Introduce helpers
tty_port_set_check_carrier() and tty_port_check_carrier() to abstract
the atomic bit ops.

Signed-off-by: Peter Hurley <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Peter Hurley 2016-04-09 17:53:23 -07:00 • committed by Greg Kroah-Hartman
commit 2d68655d15
13 changed files with 39 additions and 64 deletions

View file

@ -1043,11 +1043,7 @@ isdn_tty_change_speed(modem_info *info)
if (!(cflag & PARODD))
cval |= UART_LCR_EPAR;
if (cflag & CLOCAL)
port->flags &= ~ASYNC_CHECK_CD;
else {
port->flags |= ASYNC_CHECK_CD;
}
tty_port_set_check_carrier(port, ~cflag & CLOCAL);
}
static int
@ -2526,7 +2522,7 @@ isdn_tty_modem_result(int code, modem_info *info)
if (info->closing || (!info->port.tty))
return;
if (info->port.flags & ASYNC_CHECK_CD)
if (tty_port_check_carrier(&info->port))
tty_hangup(info->port.tty);
}
}