ACPI: processor: unify arch_acpi_processor_cleanup_pdc

The x86 and ia64 implementations of the function in $subject are
exactly the same.

Also, since the arch-specific implementations of setting _PDC have
been completely hollowed out, remove the empty shells.

Cc: Tony Luck <tony.luck@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>

arch/ia64/kernel/Makefile

@@ -18,10 +18,6 @@ obj-$(CONFIG_IA64_GENERIC)	+= acpi-ext.o
 obj-$(CONFIG_IA64_HP_ZX1)	+= acpi-ext.o
 obj-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += acpi-ext.o
 
-ifneq ($(CONFIG_ACPI_PROCESSOR),)
-obj-y				+= acpi-processor.o
-endif
-
 obj-$(CONFIG_IA64_PALINFO)	+= palinfo.o
 obj-$(CONFIG_IOSAPIC)		+= iosapic.o
 obj-$(CONFIG_MODULES)		+= module.o

arch/ia64/kernel/acpi-processor.c

-/*
- * arch/ia64/kernel/acpi-processor.c
- *
- * Copyright (C) 2005 Intel Corporation
- * 	Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
- * 	- Added _PDC for platforms with Intel CPUs
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/acpi.h>
-
-#include <acpi/processor.h>
-#include <asm/acpi.h>
-
-void arch_acpi_processor_cleanup_pdc(struct acpi_processor *pr)
-{
-	if (pr->pdc) {
-		kfree(pr->pdc->pointer->buffer.pointer);
-		kfree(pr->pdc->pointer);
-		kfree(pr->pdc);
-		pr->pdc = NULL;
-	}
-}
-
-EXPORT_SYMBOL(arch_acpi_processor_cleanup_pdc);

arch/x86/kernel/acpi/Makefile

@@ -4,7 +4,7 @@ obj-$(CONFIG_ACPI)		+= boot.o
 obj-$(CONFIG_ACPI_SLEEP)	+= sleep.o wakeup_rm.o wakeup_$(BITS).o
 
 ifneq ($(CONFIG_ACPI_PROCESSOR),)
-obj-y				+= cstate.o processor.o
+obj-y				+= cstate.o
 endif
 
 $(obj)/wakeup_rm.o:    $(obj)/realmode/wakeup.bin

arch/x86/kernel/acpi/processor.c

-/*
- * Copyright (C) 2005 Intel Corporation
- * 	Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
- * 	- Added _PDC for platforms with Intel CPUs
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/acpi.h>
-
-#include <acpi/processor.h>
-#include <asm/acpi.h>
-
-void arch_acpi_processor_cleanup_pdc(struct acpi_processor *pr)
-{
-	if (pr->pdc) {
-		kfree(pr->pdc->pointer->buffer.pointer);
-		kfree(pr->pdc->pointer);
-		kfree(pr->pdc);
-		pr->pdc = NULL;
-	}
-}
-
-EXPORT_SYMBOL(arch_acpi_processor_cleanup_pdc);

drivers/acpi/processor_pdc.c

+/*
+ * Copyright (C) 2005 Intel Corporation
+ * Copyright (C) 2009 Hewlett-Packard Development Company, L.P.
+ *
+ *	Alex Chiang <achiang@hp.com>
+ *	- Unified x86/ia64 implementations
+ *	Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
+ *	- Added _PDC for platforms with Intel CPUs
+ */
 #include <linux/dmi.h>
 
 #include <acpi/acpi_drivers.h>
@@ -121,6 +130,16 @@ static int acpi_processor_eval_pdc(struct acpi_processor *pr)
 	return status;
 }
 
+static void acpi_processor_cleanup_pdc(struct acpi_processor *pr)
+{
+	if (pr->pdc) {
+		kfree(pr->pdc->pointer->buffer.pointer);
+		kfree(pr->pdc->pointer);
+		kfree(pr->pdc);
+		pr->pdc = NULL;
+	}
+}
+
 void acpi_processor_set_pdc(struct acpi_processor *pr)
 {
 	if (arch_has_acpi_pdc() == false)
@@ -128,7 +147,7 @@ void acpi_processor_set_pdc(struct acpi_processor *pr)
 
 	acpi_processor_init_pdc(pr);
 	acpi_processor_eval_pdc(pr);
-	arch_acpi_processor_cleanup_pdc(pr);
+	acpi_processor_cleanup_pdc(pr);
 }
 EXPORT_SYMBOL_GPL(acpi_processor_set_pdc);
 

include/acpi/processor.h

@@ -257,8 +257,6 @@ int acpi_processor_notify_smm(struct module *calling_module);
 DECLARE_PER_CPU(struct acpi_processor *, processors);
 extern struct acpi_processor_errata errata;
 
-void arch_acpi_processor_cleanup_pdc(struct acpi_processor *pr);
-
 #ifdef ARCH_HAS_POWER_INIT
 void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
 					unsigned int cpu);