diff options
| author | Peter Hurley <peter@hurleysoftware.com> | 2016-04-09 17:53:23 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-30 09:26:55 -0700 |
| commit | 2d68655d15bc99981394f7caa769a14b03cac131 (patch) | |
| tree | a61f1f9ffe92c21ff69fdd3f09c8f921f0670fcf /drivers/tty/mxser.c | |
| parent | 807c8d81f4ec441241cafa3034c58df721fee869 (diff) | |
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 <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/mxser.c')
| -rw-r--r-- | drivers/tty/mxser.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c index 8f3fdad37ac7..ab618ef3d171 100644 --- a/drivers/tty/mxser.c +++ b/drivers/tty/mxser.c @@ -746,12 +746,9 @@ static int mxser_change_speed(struct tty_struct *tty, } } outb(info->MCR, info->ioaddr + UART_MCR); - if (cflag & CLOCAL) { - info->port.flags &= ~ASYNC_CHECK_CD; - } else { - info->port.flags |= ASYNC_CHECK_CD; + tty_port_set_check_carrier(&info->port, ~cflag & CLOCAL); + if (~cflag & CLOCAL) info->IER |= UART_IER_MSI; - } outb(info->IER, info->ioaddr + UART_IER); /* @@ -824,7 +821,7 @@ static void mxser_check_modem_status(struct tty_struct *tty, port->mon_data.modem_status = status; wake_up_interruptible(&port->port.delta_msr_wait); - if ((port->port.flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) { + if (tty_port_check_carrier(&port->port) && (status & UART_MSR_DDCD)) { if (status & UART_MSR_DCD) wake_up_interruptible(&port->port.open_wait); } |