diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 309b458e862ae1a151f17aa728023c9a0cbe2d91..762c44981ffd907b53f7f432fe9a891f648da90c 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -591,6 +591,9 @@ u16 pci_find_next_ext_capability(struct pci_dev *dev, u16 start, int cap)
 		return 0;
 
 	while (ttl-- > 0) {
+		if (header == 0xffffffff)
+			return 0;
+
 		if (PCI_EXT_CAP_ID(header) == cap && pos != start)
 			return pos;