diff --git a/drivers/thunderbolt/debugfs.c b/drivers/thunderbolt/debugfs.c
index c9ddd49138d8..e324cd899719 100644
--- a/drivers/thunderbolt/debugfs.c
+++ b/drivers/thunderbolt/debugfs.c
@@ -959,7 +959,7 @@ static void margining_port_remove(struct tb_port *port)
 	snprintf(dir_name, sizeof(dir_name), "port%d", port->port);
 	parent = debugfs_lookup(dir_name, port->sw->debugfs_dir);
 	if (parent)
-		debugfs_remove_recursive(debugfs_lookup("margining", parent));
+		debugfs_lookup_and_remove("margining", parent);
 
 	kfree(port->usb4->margining);
 	port->usb4->margining = NULL;
diff --git a/drivers/thunderbolt/usb4.c b/drivers/thunderbolt/usb4.c
index 4277733d0021..f8f0d24ff6e4 100644
--- a/drivers/thunderbolt/usb4.c
+++ b/drivers/thunderbolt/usb4.c
@@ -2311,13 +2311,13 @@ int usb4_usb3_port_release_bandwidth(struct tb_port *port, int *upstream_bw,
 		goto err_request;
 
 	/*
-	 * Always keep 1000 Mb/s to make sure xHCI has at least some
+	 * Always keep 900 Mb/s to make sure xHCI has at least some
 	 * bandwidth available for isochronous traffic.
 	 */
-	if (consumed_up < 1000)
-		consumed_up = 1000;
-	if (consumed_down < 1000)
-		consumed_down = 1000;
+	if (consumed_up < 900)
+		consumed_up = 900;
+	if (consumed_down < 900)
+		consumed_down = 900;
 
 	ret = usb4_usb3_port_write_allocated_bandwidth(port, consumed_up,
 						       consumed_down);