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	error = acpi_register_ioctl(ACPIIO_ACAD_GET_STATUS, acpi_acad_ioctl, dev);			error = acpi_register_ioctl(ACPIIO_ACAD_GET_STATUS, acpi_acad_ioctl, dev);
	if (error != 0)			if (error != 0)
	return (error);			return (error);

	if (device_get_unit(dev) == 0) {			if (device_get_unit(dev) == 0) {
	acpi_sc = acpi_device_get_parent_softc(dev);			acpi_sc = acpi_device_get_parent_softc(dev);
	SYSCTL_ADD_PROC(&acpi_sc->acpi_sysctl_ctx,			SYSCTL_ADD_PROC(&acpi_sc->acpi_sysctl_ctx,
	SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree),			SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree),
	OID_AUTO, "acline", CTLTYPE_INT \| CTLFLAG_RD,			OID_AUTO, "acline",
				CTLTYPE_INT \| CTLFLAG_RD \| CTLFLAG_NEEDGIANT,
	&sc->status, 0, acpi_acad_sysctl, "I", "");			&sc->status, 0, acpi_acad_sysctl, "I", "");
	}			}

	/* Get initial status after whole system is up. */			/* Get initial status after whole system is up. */
	sc->status = -1;			sc->status = -1;

	/*			/*
	* Install both system and device notify handlers since the Casio			* Install both system and device notify handlers since the Casio
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