diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index fb2cff9..fdee82d 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -198,11 +198,9 @@
 		return -ENODEV;
 	}
 	/*
-	 * Get device's current power state if it's unknown
-	 * This means device power state isn't initialized or previous setting failed
+	 * Get device's current power state
 	 */
-	if ((device->power.state == ACPI_STATE_UNKNOWN) || device->flags.force_power_state)
-		acpi_bus_get_power(device->handle, &device->power.state);
+	acpi_bus_get_power(device->handle, &device->power.state);
 	if ((state == device->power.state) && !device->flags.force_power_state) {
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n",
 				  state));