PCI/AER: Drop unused pci_disable_pcie_error_reporting()

pci_disable_pcie_error_reporting() has no callers.  Remove it.

Link: https://lore.kernel.org/r/20230710232136.233034-2-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

@@ -242,18 +242,6 @@ int pci_enable_pcie_error_reporting(struct pci_dev *dev)
 }
 EXPORT_SYMBOL_GPL(pci_enable_pcie_error_reporting);
 
-int pci_disable_pcie_error_reporting(struct pci_dev *dev)
-{
-	int rc;
-
-	if (!pcie_aer_is_native(dev))
-		return -EIO;
-
-	rc = pcie_capability_clear_word(dev, PCI_EXP_DEVCTL, PCI_EXP_AER_FLAGS);
-	return pcibios_err_to_errno(rc);
-}
-EXPORT_SYMBOL_GPL(pci_disable_pcie_error_reporting);
-
 int pci_aer_clear_nonfatal_status(struct pci_dev *dev)
 {
 	int aer = dev->aer_cap;

include/linux/aer.h

@@ -43,17 +43,12 @@ 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_disable_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_disable_pcie_error_reporting(struct pci_dev *dev)
-{
-	return -EINVAL;
-}
 static inline int pci_aer_clear_nonfatal_status(struct pci_dev *dev)
 {
 	return -EINVAL;