--- src/sys/dev/sound/pci/hda/hdac.c	2007/01/04 21:47:03	1.1
+++ src/sys/dev/sound/pci/hda/hdac.c	2007/01/06 08:34:52	1.2
@@ -1070,15 +1070,10 @@ static void
 hdac_dma_nocache(void *ptr)
 {
 #if defined(__i386__) || defined(__amd64__)
-	pt_entry_t *pte;
 	vm_offset_t va;
 
 	va = (vm_offset_t)ptr;
-	pte = vtopte(va);
-	if (pte)  {
-		*pte |= PG_N;
-		cpu_invltlb();
-	}
+	pmap_kmodify_nc(va);
 #endif
 }