rem: }
add: acpi->enable_fixed_event((uint32)(cookie));
context: acpi_button_open (const char *name, uint32 flags, void** cookie){	if (strcmp(name,"power/button/power") == 0) {		*cookie = (void *)ACPI_BITREG_POWER_BUTTON_STATUS;		acpi->write_acpi_reg(ACPI_BITREG_POWER_BUTTON_ENABLE,0);	} else if (strcmp(name,"power/button/sleep") == 0) {		*cookie = (void *)ACPI_BITREG_SLEEP_BUTTON_STATUS;		acpi->write_acpi_reg(ACPI_BITREG_SLEEP_BUTTON_ENABLE,0);	} else {		return B_ERROR;	}	return B_OK;}