diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index 9a46fa9..061da8c 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -497,9 +497,9 @@
 {
 	int type = pci_pcie_type(dev);
 
-	return type == PCI_EXP_TYPE_ROOT_PORT ||
-	       (type == PCI_EXP_TYPE_DOWNSTREAM &&
-		pcie_caps_reg(dev) & PCI_EXP_FLAGS_SLOT);
+	return (type == PCI_EXP_TYPE_ROOT_PORT ||
+		type == PCI_EXP_TYPE_DOWNSTREAM) &&
+	       pcie_caps_reg(dev) & PCI_EXP_FLAGS_SLOT;
 }
 
 static inline bool pcie_cap_has_rtctl(const struct pci_dev *dev)