diff --git a/apex_driver.c b/apex_driver.c
index b25f763..130b1b8 100644
--- a/apex_driver.c
+++ b/apex_driver.c
@@ -311,7 +311,7 @@ module_init(apex_init);
 module_exit(apex_exit);
 
 /* Allows device to enter power save upon driver close(). */
-static int allow_power_save;
+static int allow_power_save = 1;
 
 /* Allows SW based clock gating. */
 static int allow_sw_clock_gating;
diff --git a/gasket_core.c b/gasket_core.c
index 0d5ba73..c1c9276 100644
--- a/gasket_core.c
+++ b/gasket_core.c
@@ -620,6 +620,16 @@ static int gasket_pci_probe(
 		goto fail5;
 	}
 
+	if (driver_desc->device_close_cb) {
+		/* Perform a device cleanup, so as to place it in Power Save
+		 * Mode. */
+		ret = driver_desc->device_close_cb(gasket_dev);
+		if (ret) {
+			gasket_log_error(
+				gasket_dev, "Device cleanup cb returned %d.", ret);
+		}
+	}
+
 	return 0;
 
 fail5: