PCI hotplug: acpiphp: use generic pci_configure_slot()

Use the generic pci_configure_slot() rather than the acpiphp-specific
decode_hpp() and program_hpp().

Unlike the previous acpiphp-specific code, pci_configure_slot() programs
PCIe settings when an _HPX method provides them, so acpiphp-managed PCIe
devices can now be configured.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/drivers/pci/hotplug/acpi_pcihp.c b/drivers/pci/hotplug/acpi_pcihp.c
index 14d2d8a..ee24de1 100644
--- a/drivers/pci/hotplug/acpi_pcihp.c
+++ b/drivers/pci/hotplug/acpi_pcihp.c
@@ -322,13 +322,12 @@
 	return status;
 }
 
-/* acpi_get_hp_params_from_firmware
+/* pci_get_hp_params
  *
  * @dev - the pci_dev for which we want parameters
  * @hpp - allocated by the caller
  */
-int acpi_get_hp_params_from_firmware(struct pci_dev *dev,
-		struct hotplug_params *hpp)
+int pci_get_hp_params(struct pci_dev *dev, struct hotplug_params *hpp)
 {
 	acpi_status status;
 	acpi_handle handle, phandle;
@@ -345,7 +344,7 @@
 	 * _HPP settings apply to all child buses, until another _HPP is
 	 * encountered. If we don't find an _HPP for the input pci dev,
 	 * look for it in the parent device scope since that would apply to
-	 * this pci dev. If we don't find any _HPP, use hardcoded defaults
+	 * this pci dev.
 	 */
 	while (handle) {
 		status = acpi_run_hpx(handle, hpp);
@@ -363,7 +362,7 @@
 	}
 	return -ENODEV;
 }
-EXPORT_SYMBOL_GPL(acpi_get_hp_params_from_firmware);
+EXPORT_SYMBOL_GPL(pci_get_hp_params);
 
 /**
  * acpi_get_hp_hw_control_from_firmware