[ARM] 4/4 Combine oprofile common and init code

There is nothing special about having the init code separate from
the common code, so combine the two.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/oprofile/Makefile

@@ -6,6 +6,6 @@ DRIVER_OBJS = $(addprefix ../../../drivers/oprofile/, \
 		oprofilefs.o oprofile_stats.o \
 		timer_int.o )
 
-oprofile-y				:= $(DRIVER_OBJS) init.o backtrace.o
-oprofile-$(CONFIG_CPU_XSCALE)		+= common.o op_model_xscale.o
+oprofile-y				:= $(DRIVER_OBJS) common.o backtrace.o
+oprofile-$(CONFIG_CPU_XSCALE)		+= op_model_xscale.o
 

arch/arm/oprofile/common.c

@@ -125,8 +125,16 @@ static void  exit_driverfs(void)
 #define exit_driverfs() do { } while (0)
 #endif /* CONFIG_PM */
 
-int __init op_arm_init(struct oprofile_operations *ops, struct op_arm_model_spec *spec)
+int __init oprofile_arch_init(struct oprofile_operations *ops)
 {
+	struct op_arm_model_spec *spec = NULL;
+	int ret = -ENODEV;
+
+#ifdef CONFIG_CPU_XSCALE
+	spec = &op_xscale_spec;
+#endif
+
+	if (spec) {
 		init_MUTEX(&op_arm_sem);
 
 		if (spec->init() < 0)
@@ -140,12 +148,14 @@ int __init op_arm_init(struct oprofile_operations *ops, struct op_arm_model_spec
 		ops->start = op_arm_start;
 		ops->stop = op_arm_stop;
 		ops->cpu_type = op_arm_model->name;
+		ops->backtrace = arm_backtrace;
 		printk(KERN_INFO "oprofile: using %s\n", spec->name);
+	}
 
-	return 0;
+	return ret;
 }
 
-void op_arm_exit(void)
+void oprofile_arch_exit(void)
 {
 	if (op_arm_model) {
 		exit_driverfs();

arch/arm/oprofile/init.c

-/**
- * @file init.c
- *
- * @remark Copyright 2004 Oprofile Authors
- * @remark Read the file COPYING
- *
- * @author Zwane Mwaikambo
- */
-
-#include <linux/oprofile.h>
-#include <linux/init.h>
-#include <linux/errno.h>
-#include "op_arm_model.h"
-
-int __init oprofile_arch_init(struct oprofile_operations *ops)
-{
-	int ret = -ENODEV;
-
-#ifdef CONFIG_CPU_XSCALE
-	ret = op_arm_init(ops, &op_xscale_spec);
-#endif
-
-	ops->backtrace = arm_backtrace;
-
-	return ret;
-}
-
-void oprofile_arch_exit(void)
-{
-#ifdef CONFIG_CPU_XSCALE
-	op_arm_exit();
-#endif
-}