1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/pci/pcie/portdrv.h b/drivers/pci/pcie/portdrv.h
index 67fcd176babd..3656e0349dd1 100644
--- a/drivers/pci/pcie/portdrv.h
+++ b/drivers/pci/pcie/portdrv.h
@@ -9,6 +9,8 @@
 #ifndef _PORTDRV_H_
 #define _PORTDRV_H_
 
+#include <linux/compiler.h>
+
 #if !defined(PCI_CAP_ID_PME)
 #define PCI_CAP_ID_PME                  1
 #endif
@@ -39,7 +41,7 @@ extern int pcie_port_device_suspend(struct pci_dev *dev, pm_message_t state);
 extern int pcie_port_device_resume(struct pci_dev *dev);
 #endif
 extern void pcie_port_device_remove(struct pci_dev *dev);
-extern int pcie_port_bus_register(void);
+extern int __must_check pcie_port_bus_register(void);
 extern void pcie_port_bus_unregister(void);
 
 #endif /* _PORTDRV_H_ */