1 files changed, 1 insertions, 0 deletions
diff --git a/hw/pc.h b/hw/pc.h
index 7ac28499fb..3c46290afb 100644
--- a/hw/pc.h
+++ b/hw/pc.h
@@ -122,6 +122,7 @@ void i440fx_set_smm(PCIDevice *d, int val);
 int piix3_init(PCIBus *bus, int devfn);
 void i440fx_init_memory_mappings(PCIDevice *d);
 
+/* piix4.c */
 extern PCIDevice *piix4_dev;
 int piix4_init(PCIBus *bus, int devfn);