- /* calc the offset to the boardinfo that was found by the core */
- index = board - das1800_boards;
-
- /* verify that the board id matches the boardinfo */
+ /*
+ * The dev->board_ptr will be set by comedi_device_attach() if the
+ * board name provided by the user matches a board->name in this
+ * driver. If so, this function sanity checks the id to verify that
+ * the board is correct.
+ *
+ * If the dev->board_ptr is not set, the user is trying to attach
+ * an unspecified board to this driver. In this case the id is used
+ * to 'probe' for the correct dev->board_ptr.
+ */