static void metrousb_cleanup(struct usb_serial_port *port)
{
dev_dbg(&port->dev, "%s\n", __func__);
usb_unlink_urb(port->interrupt_in_urb);
usb_kill_urb(port->interrupt_in_urb);
mutex_lock(&port->serial->disc_mutex);
if (!port->serial->disconnected)
metrousb_send_unidirectional_cmd(UNI_CMD_CLOSE, port);
mutex_unlock(&port->serial->disc_mutex);
}
static int metrousb_open(struct tty_struct *tty, struct usb_serial_port *port)
{
struct usb_serial *serial = port->serial;
struct metrousb_private *metro_priv = usb_get_serial_port_data(port);
unsigned long flags = 0;
int result = 0;
dev_dbg(&port->dev, "%s\n", __func__);
/* Make sure the urb is initialized. */
if (!port->interrupt_in_urb) {
dev_err(&port->dev, "%s - interrupt urb not initialized\n",
__func__);
return -ENODEV;
}
/* Set the private data information for the port. */
spin_lock_irqsave(&metro_priv->lock, flags);
metro_priv->control_state = 0;
metro_priv->throttled = 0;
spin_unlock_irqrestore(&metro_priv->lock, flags);
/* Clear the urb pipe. */
usb_clear_halt(serial->dev, port->interrupt_in_urb->pipe);
/* Start reading from the device */
usb_fill_int_urb(port->interrupt_in_urb, serial->dev,
usb_rcvintpipe(serial->dev, port->interrupt_in_endpointAddress),
port->interrupt_in_urb->transfer_buffer,
port->interrupt_in_urb->transfer_buffer_length,
metrousb_read_int_callback, port, 1);
result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
if (result) {
dev_err(&port->dev,
"%s - failed submitting interrupt in urb, error code=%d\n",
__func__, result);
goto exit;
}
/* Send activate cmd to device */
result = metrousb_send_unidirectional_cmd(UNI_CMD_OPEN, port);
if (result) {
dev_err(&port->dev,
"%s - failed to configure device for port number=%d, error code=%d\n",
__func__, port->number, result);
goto exit;
}
dev_dbg(&port->dev, "%s - port open\n", __func__);
exit:
return result;
}
static void metrousb_cleanup(struct usb_serial_port *port)
{
dev_dbg(&port->dev, "%s\n", __func__);
if (port->serial->dev) {
/* Shutdown any interrupt in urbs. */
if (port->interrupt_in_urb) {
usb_unlink_urb(port->interrupt_in_urb);
usb_kill_urb(port->interrupt_in_urb);
}
/* Send deactivate cmd to device */
metrousb_send_unidirectional_cmd(UNI_CMD_CLOSE, port);
}
}
static void metrousb_cleanup(struct usb_serial_port *port)
{
usb_kill_urb(port->interrupt_in_urb);
metrousb_send_unidirectional_cmd(UNI_CMD_CLOSE, port);
}
