h_dev
hd->h_dev[0] = CHR_WR_2(arcn->sb.st_dev);
hd->h_dev[1] = CHR_WR_3(arcn->sb.st_dev);
if (arcn->sb.st_dev != (dev_t)(SHRT_EXT(hd->h_dev)))
arcn->sb.st_dev = (dev_t)(RSHRT_EXT(hd->h_dev));
arcn->sb.st_dev = (dev_t)(SHRT_EXT(hd->h_dev));
u_char h_dev[2];
__func__, req->h_dev, resp->h_status, resp->h_i2csts,
req.h_dev = es->es_dev;
req.h_dev = devmap->index;
req.h_dev = devmap->index;