PCI/AER: Unexport pci_enable_pcie_error_reporting()

pci_enable_pcie_error_reporting() is used only inside aer.c.  Stop exposing
it outside the file.

Link: https://lore.kernel.org/r/20230710232136.233034-3-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>

Author: bjorn-helgaas

drivers/pci/pcie/aer.c

@@ -230,7 +230,7 @@ int pcie_aer_is_native(struct pci_dev *dev)
 	return pcie_ports_native || host->native_aer;
 }
 
-int pci_enable_pcie_error_reporting(struct pci_dev *dev)
+static int pci_enable_pcie_error_reporting(struct pci_dev *dev)
 {
 	int rc;
 
@@ -240,7 +240,6 @@ int pci_enable_pcie_error_reporting(struct pci_dev *dev)
 	rc = pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_AER_FLAGS);
 	return pcibios_err_to_errno(rc);
 }
-EXPORT_SYMBOL_GPL(pci_enable_pcie_error_reporting);
 
 int pci_aer_clear_nonfatal_status(struct pci_dev *dev)
 {

include/linux/aer.h

@@ -41,14 +41,8 @@ struct aer_capability_regs {
 };
 
 #if defined(CONFIG_PCIEAER)
-/* PCIe port driver needs this function to enable AER */
-int pci_enable_pcie_error_reporting(struct pci_dev *dev);
 int pci_aer_clear_nonfatal_status(struct pci_dev *dev);
 #else
-static inline int pci_enable_pcie_error_reporting(struct pci_dev *dev)
-{
-	return -EINVAL;
-}
 static inline int pci_aer_clear_nonfatal_status(struct pci_dev *dev)
 {
 	return -EINVAL;