4786l2

Listing 2. Needs caption

/* we can only write as much as 1 urb will hold */
bytes_written = (count > skel->bulk_out_size) ? skel->bulk_out_size : count;

/* copy the data from userspace into our urb */
copy_from_user(skel->write_urb->transfer_buffer, buffer, bytes_written);

/* set up our urb */
FILL_BULK_URB(skel->write_urb, skel->dev,
              usb_sndbulkpipe(skel->dev, skel->bulk_out_endpointAddr),
              skel->write_urb->transfer_buffer, bytes_written, 
              skel_write_bulk_callback, skel);

/* send the data out the bulk port */
result = usb_submit_urb(skel->write_urb);
if (result) {
        err(__FUNCTION__ " - failed submitting write urb, error %d", result);
}