decrement_open_device_count
retval = decrement_open_device_count(board, &board->device_list, desc->pad,
retval = decrement_open_device_count(board, &board->device_list, pad, sad);
retval = decrement_open_device_count(board, &board->device_list, desc->pad,
retval = decrement_open_device_count(board, &board->device_list, desc->pad,