263 	long int rc, n_read, n_req, read_size;  in dtl_file_read()  local
273 	n_req = len / sizeof(struct dtl_entry);  in dtl_file_read()
286 	if (last_idx + n_req > cur_idx)  in dtl_file_read()
287 		n_req = cur_idx - last_idx;  in dtl_file_read()
289 	if (n_req > 0)  in dtl_file_read()
290 		dtl->last_idx = last_idx + n_req;  in dtl_file_read()
294 	if (n_req <= 0)  in dtl_file_read()
300 	if (i + n_req > dtl->buf_entries) {  in dtl_file_read()
309 		n_req -= read_size;  in dtl_file_read()
315 	rc = copy_to_user(buf, &dtl->buf[i], n_req * sizeof(struct dtl_entry));  in dtl_file_read()
319 	n_read += n_req;  in dtl_file_read()