Index: uspace/drv/intctl/obio/obio.c
===================================================================
--- uspace/drv/intctl/obio/obio.c	(revision beb83c14fc69926ddb40d44bb96dc734b5d21545)
+++ uspace/drv/intctl/obio/obio.c	(revision c9c1ccd6e4a5eac6e9e07d4f080cc513bd3e46ba)
@@ -118,4 +118,5 @@
 	ddf_fun_t *fun_a = NULL;
 	errno_t rc;
+	bool bound = false;
 
 	rc = pio_enable((void *)res->base, OBIO_SIZE, (void **) &obio->regs);
@@ -149,4 +150,6 @@
 	return EOK;
 error:
+	if (bound)
+		ddf_fun_unbind(fun_a);
 	if (fun_a != NULL)
 		ddf_fun_destroy(fun_a);