Index: uspace/lib/usbhost/src/usb_endpoint_manager.c
===================================================================
--- uspace/lib/usbhost/src/usb_endpoint_manager.c	(revision 46f2808e5568954ef2fc0b2640d62d0a1f8df779)
+++ uspace/lib/usbhost/src/usb_endpoint_manager.c	(revision 22a8a9bf03a2a9e9757a181a62a427d71aae2fa5)
@@ -26,4 +26,10 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
+/**  @addtogroup libusbhost
+ * @{
+ */
+/** @file
+ * HC Endpoint management.
+ */
 
 #include <bool.h>
@@ -56,5 +62,5 @@
 }
 /*----------------------------------------------------------------------------*/
-/** Get list that holds endpints for given address.
+/** Get list that holds endpoints for given address.
  * @param instance usb_endpoint_manager structure, non-null.
  * @param addr USB address, must be >= 0.
@@ -75,4 +81,5 @@
  * @return Pointer to endpoint_t structure representing given communication
  * target, NULL if there is no such endpoint registered.
+ * @note Assumes that the internal mutex is locked.
  */
 static endpoint_t * find_locked(usb_endpoint_manager_t *instance,
@@ -169,4 +176,5 @@
  *
  * Really ugly one. Resets toggle bit on all endpoints that need it.
+ * @TODO Use tools from libusbdev requests.h
  */
 void usb_endpoint_manager_reset_eps_if_need(usb_endpoint_manager_t *instance,
@@ -184,4 +192,5 @@
 	case 0x01: /* Clear Feature -- resets only cleared ep */
 		/* Recipient is endpoint, value is zero (ENDPOINT_STALL) */
+		// TODO Use macros in libusbdev requests.h
 		if (((data[0] & 0xf) == 1) && ((data[2] | data[3]) == 0)) {
 			fibril_mutex_lock(&instance->guard);
@@ -202,5 +211,7 @@
 		/* Recipient must be device, this resets all endpoints,
 		 * In fact there should be no endpoints but EP 0 registered
-		 * as different interfaces use different endpoints. */
+		 * as different interfaces use different endpoints,
+		 * unless you're changing configuration or alternative
+		 * interface of an already setup device. */
 		if ((data[0] & 0xf) == 0) {
 			fibril_mutex_lock(&instance->guard);
@@ -385,4 +396,13 @@
 }
 /*----------------------------------------------------------------------------*/
+/** Unregister and destroy all endpoints using given address.
+ * @param instance usb_endpoint_manager structure, non-null.
+ * @param address USB address.
+ * @param endpoint USB endpoint number.
+ * @param direction Communication direction.
+ * @param callback Function to call after unregister, before destruction.
+ * @arg Argument to pass to the callback function.
+ * @return Error code.
+ */
 void usb_endpoint_manager_remove_address(usb_endpoint_manager_t *instance,
     usb_address_t address, void (*callback)(endpoint_t *, void *), void *arg)
@@ -403,2 +423,5 @@
 	fibril_mutex_unlock(&instance->guard);
 }
+/**
+ * @}
+ */