Index: uspace/lib/drv/generic/driver.c
===================================================================
--- uspace/lib/drv/generic/driver.c	(revision ef4043421c5f5a6e3e61bddcbe9ae96bc6bc7fb5)
+++ uspace/lib/drv/generic/driver.c	(revision 7c69861bb4a18e9c3cdf796e6cca49187b64245a)
@@ -821,4 +821,5 @@
 	assert(fun->bound == false);
 	assert(fun->name != NULL);
+	assert(fun->dev != NULL);
 	
 	add_to_functions_list(fun);