ACPICA: Obsolete the acpi_os_derive_pci_id OSL interface

This function is not OS-dependent and has been replaced by
acpi_hw_derive_pci_id, which is now in the ACPICA core code.  Local
implementations of acpi_os_derive_pci_id are no longer necessary and
are removed. ACPICA BZ 857.

http://www.acpica.org/bugzilla/show_bug.cgi?id=857

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/acpi/acpica/Makefile

@@ -21,7 +21,7 @@ acpi-y += exconfig.o  exfield.o  exnames.o   exoparg6.o  exresolv.o  exstorob.o\
 	 excreate.o  exmisc.o   exoparg2.o  exregion.o  exstore.o   exutils.o \
 	 exdump.o    exmutex.o  exoparg3.o  exresnte.o  exstoren.o  exdebug.o
 
-acpi-y += hwacpi.o  hwgpe.o  hwregs.o  hwsleep.o hwxface.o hwvalid.o
+acpi-y += hwacpi.o  hwgpe.o  hwregs.o  hwsleep.o hwxface.o hwvalid.o hwpci.o
 
 acpi-$(ACPI_FUTURE_USAGE) += hwtimer.o
 

drivers/acpi/acpica/achware.h

@@ -122,6 +122,13 @@ acpi_hw_enable_runtime_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
 				 void *context);
 
 #ifdef	ACPI_FUTURE_USAGE
+/*
+ * hwpci - PCI configuration support
+ */
+acpi_status
+acpi_hw_derive_pci_id(struct acpi_pci_id *pci_id,
+		      acpi_handle root_pci_device, acpi_handle pci_region);
+
 /*
  * hwtimer - ACPI Timer prototypes
  */

drivers/acpi/acpica/evrgnini.c

@@ -289,8 +289,8 @@ acpi_ev_pci_config_region_setup(acpi_handle handle,
 	}
 
 	/*
-	 * Get the PCI device and function numbers from the _ADR object contained
-	 * in the parent's scope.
+	 * Get the PCI device and function numbers from the _ADR object
+	 * contained in the parent's scope.
 	 */
 	status = acpi_ut_evaluate_numeric_object(METHOD_NAME__ADR,
 						 pci_device_node, &pci_value);
@@ -320,9 +320,15 @@ acpi_ev_pci_config_region_setup(acpi_handle handle,
 		pci_id->bus = ACPI_LOWORD(pci_value);
 	}
 
-	/* Complete this device's pci_id */
+	/* Complete/update the PCI ID for this device */
 
-	acpi_os_derive_pci_id(pci_root_node, region_obj->region.node, &pci_id);
+	status =
+	    acpi_hw_derive_pci_id(pci_id, pci_root_node,
+				  region_obj->region.node);
+	if (ACPI_FAILURE(status)) {
+		ACPI_FREE(pci_id);
+		return_ACPI_STATUS(status);
+	}
 
 	*region_context = pci_id;
 	return_ACPI_STATUS(AE_OK);