diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index fde41cc..aa48037 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -517,7 +517,12 @@
 int
 pci_enable_device(struct pci_dev *dev)
 {
-	int err = pci_enable_device_bars(dev, (1 << PCI_NUM_RESOURCES) - 1);
+	int err;
+
+	if (dev->is_enabled)
+		return 0;
+
+	err = pci_enable_device_bars(dev, (1 << PCI_NUM_RESOURCES) - 1);
 	if (err)
 		return err;
 	pci_fixup_device(pci_fixup_enable, dev);