diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 29ef505..ef8e659 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -901,10 +901,7 @@
 	device->power.states[ACPI_STATE_D3].flags.valid = 1;
 	device->power.states[ACPI_STATE_D3].power = 0;
 
-	/* TBD: System wake support and resource requirements. */
-
-	device->power.state = ACPI_STATE_UNKNOWN;
-	acpi_bus_get_power(device->handle, &(device->power.state));
+	acpi_bus_init_power(device);
 
 	return 0;
 }