diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c
index 90ff291c24f0..7872035dbb03 100644
--- a/drivers/pci/controller/pci-aardvark.c
+++ b/drivers/pci/controller/pci-aardvark.c
@@ -688,8 +688,10 @@ static int advk_pcie_rd_conf(struct pci_bus *bus, u32 devfn,
 	advk_writel(pcie, 1, PIO_START);
 
 	ret = advk_pcie_wait_pio(pcie);
-	if (ret < 0)
+	if (ret < 0) {
+		*val = 0xffffffff;
 		return PCIBIOS_SET_FAILED;
+	}
 
 	advk_pcie_check_pio_status(pcie);