Index: uspace/lib/usbhost/include/usb/host/endpoint.h
===================================================================
--- uspace/lib/usbhost/include/usb/host/endpoint.h	(revision 549ff23eeccbe3fe8e6eb34fffc58415a5e01252)
+++ uspace/lib/usbhost/include/usb/host/endpoint.h	(revision 20a3465b8133a4f1f5c4b5a50daf07cb90a66462)
@@ -41,20 +41,37 @@
 #include <usb/usb.h>
 
+/** Host controller side endpoint structure. */
 typedef struct endpoint {
+	/** Part of linked list. */
 	link_t link;
+	/** USB address. */
 	usb_address_t address;
+	/** USB endpoint number. */
 	usb_endpoint_t endpoint;
+	/** Communication direction. */
 	usb_direction_t direction;
+	/** USB transfer type. */
 	usb_transfer_type_t transfer_type;
+	/** Communication speed. */
 	usb_speed_t speed;
+	/** Maximum size of data packets. */
 	size_t max_packet_size;
+	/** Necessary bandwidth. */
 	size_t bandwidth;
+	/** Value of the toggle bit. */
 	unsigned toggle:1;
+	/** True if there is a batch using this scheduled for this endpoint. */
+	volatile bool active;
+	/** Protects resources and active status changes. */
 	fibril_mutex_t guard;
+	/** Signals change of active status. */
 	fibril_condvar_t avail;
-	volatile bool active;
+	/** Optional device specific data. */
 	struct {
+		/** Device specific data. */
 		void *data;
+		/** Callback to get the value of toggle bit. */
 		int (*toggle_get)(void *);
+		/** Callback to set the value of toggle bit. */
 		void (*toggle_set)(void *, int);
 	} hc_data;
@@ -76,4 +93,8 @@
 void endpoint_toggle_set(endpoint_t *instance, int toggle);
 
+/** list_get_instance wrapper.
+ * @param item Pointer to link member.
+ * @return Pointer to enpoint_t structure.
+ */
 static inline endpoint_t * endpoint_get_instance(link_t *item)
 {