SCSI_VPD_HEADER_SIZE
if (result < SCSI_VPD_HEADER_SIZE)
result -= SCSI_VPD_HEADER_SIZE;
if (!memchr(&vpd[SCSI_VPD_HEADER_SIZE], page, result))
result = scsi_vpd_inquiry(sdev, vpd, page, SCSI_VPD_HEADER_SIZE);
if (result < SCSI_VPD_HEADER_SIZE) {