diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 5a25facb3ce7..d3fabfca7e6f 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -2110,20 +2110,6 @@ static int pci_enable_device_flags(struct pci_dev *dev, unsigned long flags)
 	return err;
 }
 
-/**
- * pci_enable_device_io - Initialize a device for use with IO space
- * @dev: PCI device to be initialized
- *
- * Initialize device before it's used by a driver. Ask low-level code
- * to enable I/O resources. Wake up the device if it was suspended.
- * Beware, this function can fail.
- */
-int pci_enable_device_io(struct pci_dev *dev)
-{
-	return pci_enable_device_flags(dev, IORESOURCE_IO);
-}
-EXPORT_SYMBOL(pci_enable_device_io);
-
 /**
  * pci_enable_device_mem - Initialize a device for use with Memory space
  * @dev: PCI device to be initialized
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 6a09bd9636d5..69b10f2fb606 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1313,7 +1313,6 @@ int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val);
 int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);
 
 int __must_check pci_enable_device(struct pci_dev *dev);
-int __must_check pci_enable_device_io(struct pci_dev *dev);
 int __must_check pci_enable_device_mem(struct pci_dev *dev);
 int __must_check pci_reenable_device(struct pci_dev *);
 int __must_check pcim_enable_device(struct pci_dev *pdev);