diff options
Diffstat (limited to 'drivers/usb/serial/ftdi_sio.c')
| -rw-r--r-- | drivers/usb/serial/ftdi_sio.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index b21d553c245b..9ced8937a8f3 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -1967,8 +1967,16 @@ static int ftdi_process_packet(struct usb_serial_port *port, port->icount.dsr++; if (diff_status & FTDI_RS0_RI) port->icount.rng++; - if (diff_status & FTDI_RS0_RLSD) + if (diff_status & FTDI_RS0_RLSD) { + struct tty_struct *tty; + port->icount.dcd++; + tty = tty_port_tty_get(&port->port); + if (tty) + usb_serial_handle_dcd_change(port, tty, + status & FTDI_RS0_RLSD); + tty_kref_put(tty); + } wake_up_interruptible(&port->port.delta_msr_wait); priv->prev_status = status; |