rem: acpi->write_acpi_reg(op,*((uint32 *)(arg)));
add: acpi->write_acpi_reg(~op,*((uint32 *)(arg)));
context: acpi_button_control (void* cookie, uint32 op, void* arg, size_t len){		switch (op) {		case ~ACPI_BITREG_POWER_BUTTON_ENABLE:		case ~ACPI_BITREG_SLEEP_BUTTON_ENABLE:		case ~ACPI_BITREG_POWER_BUTTON_STATUS:		case ~ACPI_BITREG_SLEEP_BUTTON_STATUS:			acpi->write_acpi_reg(op,*((uint32 *)(arg)));			break;		case ACPI_BITREG_POWER_BUTTON_STATUS:		case ACPI_BITREG_SLEEP_BUTTON_STATUS:			*((uint32 *)(arg)) = acpi->read_acpi_reg(op);			break;		default:			return B_ERROR;	}	return B_OK;}