Index: uspace/lib/usb/include/usb/host/endpoint.h
===================================================================
--- uspace/lib/usb/include/usb/host/endpoint.h	(revision 506d3304a9e494319951e89a619b5c1bad221a58)
+++ uspace/lib/usb/include/usb/host/endpoint.h	(revision 6a32665dcadd5b1be567dad953c6c8ad45104b65)
@@ -39,4 +39,6 @@
 #include <bool.h>
 #include <adt/list.h>
+#include <fibril_synch.h>
+
 #include <usb/usb.h>
 
@@ -48,6 +50,8 @@
 	usb_speed_t speed;
 	size_t max_packet_size;
+	unsigned toggle:1;
+	fibril_mutex_t guard;
+	fibril_condvar_t avail;
 	bool active;
-	unsigned toggle:1;
 	link_t same_device_eps;
 } endpoint_t;
@@ -58,4 +62,8 @@
 
 void endpoint_destroy(endpoint_t *instance);
+
+void endpoint_use(endpoint_t *instance);
+
+void endpoint_release(endpoint_t *instance);
 
 int endpoint_toggle_get(endpoint_t *instance);