diff options
Diffstat (limited to 'drivers/usb/serial/mct_u232.c')
| -rw-r--r-- | drivers/usb/serial/mct_u232.c | 36 |
1 files changed, 17 insertions, 19 deletions
diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c index ef4d7adfbd9d..933dd07aa087 100644 --- a/drivers/usb/serial/mct_u232.c +++ b/drivers/usb/serial/mct_u232.c @@ -514,31 +514,29 @@ static void mct_u232_dtr_rts(struct usb_serial_port *port, int on) unsigned int control_state; struct mct_u232_private *priv = usb_get_serial_port_data(port); - mutex_lock(&port->serial->disc_mutex); - if (!port->serial->disconnected) { - /* drop DTR and RTS */ - spin_lock_irq(&priv->lock); - if (on) - priv->control_state |= TIOCM_DTR | TIOCM_RTS; - else - priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS); - control_state = priv->control_state; - spin_unlock_irq(&priv->lock); - mct_u232_set_modem_ctrl(port->serial, control_state); - } - mutex_unlock(&port->serial->disc_mutex); + spin_lock_irq(&priv->lock); + if (on) + priv->control_state |= TIOCM_DTR | TIOCM_RTS; + else + priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS); + control_state = priv->control_state; + spin_unlock_irq(&priv->lock); + + mct_u232_set_modem_ctrl(port->serial, control_state); } static void mct_u232_close(struct usb_serial_port *port) { dbg("%s port %d", __func__, port->number); - if (port->serial->dev) { - /* shutdown our urbs */ - usb_kill_urb(port->write_urb); - usb_kill_urb(port->read_urb); - usb_kill_urb(port->interrupt_in_urb); - } + /* + * Must kill the read urb as it is actually an interrupt urb, which + * generic close thus fails to kill. + */ + usb_kill_urb(port->read_urb); + usb_kill_urb(port->interrupt_in_urb); + + usb_serial_generic_close(port); } /* mct_u232_close */ |