- /* bulk data available */
- usb_fill_bulk_urb (port->read_urb, serial->dev,
- usb_rcvbulkpipe (serial->dev,
- port->bulk_in_endpointAddress),
- port->read_urb->transfer_buffer,
- port->read_urb->transfer_buffer_length,
- garmin_read_bulk_callback, port);
- status = usb_submit_urb(port->read_urb, GFP_KERNEL);
- if (status) {
- dev_err(&port->dev,
- "%s - failed submitting read urb, error %d\n",
- __FUNCTION__, status);
+ if (0 == (garmin_data_p->flags & FLAGS_BULK_IN_ACTIVE)) {
+
+ /* bulk data available */
+ usb_fill_bulk_urb (port->read_urb, serial->dev,
+ usb_rcvbulkpipe (serial->dev,
+ port->bulk_in_endpointAddress),
+ port->read_urb->transfer_buffer,
+ port->read_urb->transfer_buffer_length,
+ garmin_read_bulk_callback, port);
+ status = usb_submit_urb(port->read_urb, GFP_ATOMIC);
+ if (status) {
+ dev_err(&port->dev,
+ "%s - failed submitting read urb, error %d\n",
+ __FUNCTION__, status);
+ } else {
+ spin_lock_irqsave(&garmin_data_p->lock, flags);
+ garmin_data_p->flags |= FLAGS_BULK_IN_ACTIVE;
+ /* do not send this packet to the user */
+ garmin_data_p->ignorePkts = 1;
+ spin_unlock_irqrestore(&garmin_data_p->lock, flags);
+ }
+ } else {
+ /* bulk-in transfer still active */
+ spin_lock_irqsave(&garmin_data_p->lock, flags);
+ garmin_data_p->flags |= FLAGS_BULK_IN_RESTART;
+ spin_unlock_irqrestore(&garmin_data_p->lock, flags);