diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c
index 5cd51f25f446..c77297fa2dad 100644
--- a/arch/x86/kernel/devicetree.c
+++ b/arch/x86/kernel/devicetree.c
@@ -87,7 +87,7 @@ static int x86_of_pci_irq_enable(struct pci_dev *dev)
 
 	ret = pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
 	if (ret)
-		return ret;
+		return pcibios_err_to_errno(ret);
 	if (!pin)
 		return 0;