acpi_uhub_port
struct acpi_uhub_port *port = &sc->port[p - 1];
struct acpi_uhub_port *port = oidp->oid_arg1;
struct acpi_uhub_port *port = &sc->port[p - 1];
sc->port = malloc(sizeof(struct acpi_uhub_port) * uh->nports,
struct acpi_uhub_port *port;