Index: uspace/srv/devman/devman.c
===================================================================
--- uspace/srv/devman/devman.c	(revision 4006447f76b2458440272197d0fda72d4caecbe8)
+++ uspace/srv/devman/devman.c	(revision 554debd87f844cb5803239317a4c966dbc5079a5)
@@ -678,6 +678,4 @@
 }
 
-static FIBRIL_MUTEX_INITIALIZE(add_device_guard);
-
 /** Pass a device to running driver.
  *
@@ -687,6 +685,4 @@
 void add_device(int phone, driver_t *drv, node_t *node, dev_tree_t *tree)
 {
-	fibril_mutex_lock(&add_device_guard);
-
 	/*
 	 * We do not expect to have driver's mutex locked as we do not
@@ -719,6 +715,4 @@
 	/* Wait for answer from the driver. */
 	async_wait_for(req, &rc);
-
-	fibril_mutex_unlock(&add_device_guard);
 
 	switch(rc) {