Index: uspace/drv/uhci-hcd/uhci_struct/transfer_descriptor.h
===================================================================
--- uspace/drv/uhci-hcd/uhci_struct/transfer_descriptor.h	(revision 4192d3d642e595c7d2d4eba17d486bd571667652)
+++ uspace/drv/uhci-hcd/uhci_struct/transfer_descriptor.h	(revision 9a818a93338eb8410dcc0917f9c3d49086134801)
@@ -124,4 +124,11 @@
 int transfer_descriptor_status(transfer_descriptor_t *instance);
 
+static inline bool transfer_descriptor_is_active(
+    transfer_descriptor_t *instance)
+{
+	assert(instance);
+	return instance->status & TD_STATUS_ERROR_ACTIVE;
+}
+
 static inline void transfer_descriptor_append(
   transfer_descriptor_t *instance, transfer_descriptor_t *item)