diff --git a/hw/ide/pci.c b/hw/ide/pci.c
index 9504e44..81bc6a7 100644
--- a/hw/ide/pci.c
+++ b/hw/ide/pci.c
@@ -62,7 +62,7 @@
 static void ide_map(PCIDevice *pci_dev, int region_num,
                     uint32_t addr, uint32_t size, int type)
 {
-    PCIIDEState *d = (PCIIDEState *)pci_dev;
+    PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, pci_dev);
     IDEBus *bus;
 
     if (region_num <= 3) {
@@ -247,7 +247,7 @@
 static void bmdma_map(PCIDevice *pci_dev, int region_num,
                     uint32_t addr, uint32_t size, int type)
 {
-    PCIIDEState *d = (PCIIDEState *)pci_dev;
+    PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, pci_dev);
     int i;
 
     for(i = 0;i < 2; i++) {