940     char cdc_wdm[32+1] = "/dev/cdc-wdm0";  in main()  local
951                 strcpy(cdc_wdm, optarg);  in main()
962     if (access(cdc_wdm, R_OK | W_OK)) {  in main()
963         dprintf("Fail to access %s, errno: %d (%s). break\n", cdc_wdm, errno, strerror(errno));  in main()
967     sprintf(servername, "quectel-qmi-proxy%c", cdc_wdm[strlen(cdc_wdm)-1]);  in main()
968     dprintf("Will use cdc-wdm='%s', proxy='%s'\n", cdc_wdm, servername);  in main()
971         if (access(cdc_wdm, R_OK | W_OK)) {  in main()
972 …         dprintf("Fail to access %s, errno: %d (%s). continue\n", cdc_wdm, errno, strerror(errno));  in main()
978         cdc_wdm_fd = open(cdc_wdm, O_RDWR | O_NONBLOCK | O_NOCTTY);  in main()
980             dprintf("Failed to open %s, errno: %d (%s). break\n", cdc_wdm, errno, strerror(errno));  in main()
998             if (access(cdc_wdm, F_OK|R_OK|W_OK))  in main()