2246     struct file *ref_filp = NULL;  in gtp_bak_ref_proc()  local
2285     ref_filp = filp_open(GTP_BAK_REF_PATH, O_RDWR | O_CREAT, 0666);  in gtp_bak_ref_proc()
2286     if (IS_ERR(ref_filp))  in gtp_bak_ref_proc()
2303         ref_filp->f_op->llseek(ref_filp, 0, SEEK_SET);  in gtp_bak_ref_proc()
2304         ret = ref_filp->f_op->read(ref_filp, (char*)p_bak_ref, ts->bak_ref_len, &ref_filp->f_pos);  in gtp_bak_ref_proc()
2353         ref_filp->f_op->llseek(ref_filp, 0, SEEK_SET);  in gtp_bak_ref_proc()
2354         ref_filp->f_op->write(ref_filp, (char*)p_bak_ref, ts->bak_ref_len, &ref_filp->f_pos);  in gtp_bak_ref_proc()
2372     if (!IS_ERR(ref_filp))  in gtp_bak_ref_proc()
2375         ref_filp->f_op->llseek(ref_filp, 0, SEEK_SET);  in gtp_bak_ref_proc()
2376         ref_filp->f_op->write(ref_filp, (char*)p_bak_ref, ts->bak_ref_len, &ref_filp->f_pos);  in gtp_bak_ref_proc()
2389     if (ref_filp && !IS_ERR(ref_filp))  in gtp_bak_ref_proc()
2391         filp_close(ref_filp, NULL);  in gtp_bak_ref_proc()