Index: uspace/lib/usbhost/src/bus.c
===================================================================
--- uspace/lib/usbhost/src/bus.c	(revision 806a779d222f7ba300b129416af530f9f08cdbec)
+++ uspace/lib/usbhost/src/bus.c	(revision 94a0904eeac0644e7f048249bd272198d23ee400)
@@ -272,4 +272,7 @@
 		return r;
 
+	/* Abort a transfer batch, if there was any */
+	endpoint_abort(ep);
+
 	/* Bus reference */
 	endpoint_del_ref(ep);