Index: uspace/lib/usbhost/src/usb_transfer_batch.c
===================================================================
--- uspace/lib/usbhost/src/usb_transfer_batch.c	(revision 21be46a6b9bbebc1f385744f5b49b3d39d3837fd)
+++ uspace/lib/usbhost/src/usb_transfer_batch.c	(revision 8f68913ffa52d241510b0d7f1fd056b1b456661b)
@@ -141,5 +141,5 @@
 			    instance->setup_buffer);
 		}
-		instance->callback_out(instance->fun, error, instance->arg);
+		instance->callback_out(error, instance->arg);
 	}
 
@@ -150,6 +150,5 @@
 	                memcpy(instance->buffer, data, safe_size);
 		}
-		instance->callback_in(instance->fun, error,
-		    safe_size, instance->arg);
+		instance->callback_in(error, safe_size, instance->arg);
 	}
 }