trans_id           23 core/ptp.c                     int h, ptp_data *data, int opcode, int sess_id, int trans_id,
trans_id          307 core/ptp.c                    int h, ptp_data *data, int opcode, int sess_id, int trans_id,
trans_id          321 core/ptp.c       ptp.trans_id = trans_id;
trans_id           20 core/ptp_chdk.h     int trans_id;