comedi_buf_map_access 2288 drivers/staging/comedi/comedi_fops.c 	return comedi_buf_map_access(bm, offset, buf, len, write);
comedi_buf_map_access   33 drivers/staging/comedi/comedi_internal.h int comedi_buf_map_access(struct comedi_buf_map *bm, unsigned long offset,