Index: kernel/arch/ia64/src/drivers/ski.c
===================================================================
--- kernel/arch/ia64/src/drivers/ski.c	(revision f72906c1ceb4b546d431ab8e9c41434425c1096f)
+++ kernel/arch/ia64/src/drivers/ski.c	(revision 7ddc2c7a97bf75277145753f192b8a5f0365792d)
@@ -61,5 +61,7 @@
 static outdev_operations_t skidev_ops = {
 	.write = ski_putchar,
-	.redraw = NULL
+	.redraw = NULL,
+	.scroll_up = NULL,
+	.scroll_down = NULL
 };