Index: uspace/drv/platform/msim/msim.c
===================================================================
--- uspace/drv/platform/msim/msim.c	(revision c1694b6b243b360b5f1fbf0629b5e7d4f7f4a515)
+++ uspace/drv/platform/msim/msim.c	(revision 48fd597f94954b7c9bbec15bf09144fafd7adcb3)
@@ -156,5 +156,5 @@
 	/* Nothing to do. */
 
-	return true;
+	return EOK;
 }
 
Index: uspace/drv/platform/sun4v/sun4v.c
===================================================================
--- uspace/drv/platform/sun4v/sun4v.c	(revision c1694b6b243b360b5f1fbf0629b5e7d4f7f4a515)
+++ uspace/drv/platform/sun4v/sun4v.c	(revision 48fd597f94954b7c9bbec15bf09144fafd7adcb3)
@@ -116,5 +116,5 @@
 static int sun4v_enable_interrupt(ddf_fun_t *fun, int irq)
 {
-	return true;
+	return EOK;
 }