C++ (Cpp) airprime_send_setup Examples

Example #1

File: airprime.c Project: maraz/linux-2.6

static void airprime_close(struct usb_serial_port *port, struct file *filp)
{
	struct airprime_private *priv = usb_get_serial_port_data(port);
	int i;

	dbg("%s - port %d", __func__, port->number);

	priv->rts_state = 0;
	priv->dtr_state = 0;

	mutex_lock(&port->serial->disc_mutex);
	if (!port->serial->disconnected)
		airprime_send_setup(port);
	mutex_unlock(&port->serial->disc_mutex);

	for (i = 0; i < NUM_READ_URBS; ++i) {
		usb_kill_urb(priv->read_urbp[i]);
		kfree(priv->read_urbp[i]->transfer_buffer);
		usb_free_urb(priv->read_urbp[i]);
	}

	/* free up private structure */
	kfree(priv);
	usb_set_serial_port_data(port, NULL);
}

Example #2

static int airprime_open(struct usb_serial_port *port, struct file *filp)
{
	struct airprime_private *priv = usb_get_serial_port_data(port);
	struct usb_serial *serial = port->serial;
	struct urb *urb;
	char *buffer = NULL;
	int i;
	int result = 0;

	dbg("%s - port %d", __FUNCTION__, port->number);

	/* initialize our private data structure if it isn't already created */
	if (!priv) {
		priv = kzalloc(sizeof(*priv), GFP_KERNEL);
		if (!priv) {
			result = -ENOMEM;
			goto out;
		}
		spin_lock_init(&priv->lock);
		usb_set_serial_port_data(port, priv);
	}

	/* Set some sane defaults */
	priv->rts_state = 1;
	priv->dtr_state = 1;

	for (i = 0; i < NUM_READ_URBS; ++i) {
		buffer = kmalloc(buffer_size, GFP_KERNEL);
		if (!buffer) {
			dev_err(&port->dev, "%s - out of memory.\n",
				__FUNCTION__);
			result = -ENOMEM;
			goto errout;
		}
		urb = usb_alloc_urb(0, GFP_KERNEL);
		if (!urb) {
			kfree(buffer);
			dev_err(&port->dev, "%s - no more urbs?\n",
				__FUNCTION__);
			result = -ENOMEM;
			goto errout;
		}
		usb_fill_bulk_urb(urb, serial->dev,
				  usb_rcvbulkpipe(serial->dev,
						  port->bulk_out_endpointAddress),
				  buffer, buffer_size,
				  airprime_read_bulk_callback, port);
		result = usb_submit_urb(urb, GFP_KERNEL);
		if (result) {
			usb_free_urb(urb);
			kfree(buffer);
			dev_err(&port->dev,
				"%s - failed submitting read urb %d for port %d, error %d\n",
				__FUNCTION__, i, port->number, result);
			goto errout;
		}
		/* remember this urb so we can kill it when the port is closed */
		priv->read_urbp[i] = urb;
	}

	airprime_send_setup(port);

	goto out;

 errout:
	/* some error happened, cancel any submitted urbs and clean up anything that
	   got allocated successfully */

	while (i-- != 0) {
		urb = priv->read_urbp[i];
		buffer = urb->transfer_buffer;
		usb_kill_urb (urb);
		usb_free_urb (urb);
		kfree (buffer);
	}

 out:
	return result;
}