oprofile: Remove exit function for timer mode

Remove exit functions by moving init/exit code to oprofile's setup/
shutdown functions. Doing so the oprofile module exit code will be
easier and less error-prone.
Signed-off-by: Robert Richter <robert.richter@amd.com>

drivers/oprofile/oprof.c

@@ -262,9 +262,7 @@ static int __init oprofile_init(void)
 		return 0;
 
 	/* failed */
-	if (timer_mode)
-		oprofile_timer_exit();
-	else
+	if (!timer_mode)
 		oprofile_arch_exit();
 
 	return err;
@@ -274,9 +272,7 @@ static int __init oprofile_init(void)
 static void __exit oprofile_exit(void)
 {
 	oprofilefs_unregister();
-	if (timer_mode)
-		oprofile_timer_exit();
-	else
+	if (!timer_mode)
 		oprofile_arch_exit();
 }
 

drivers/oprofile/timer_int.c

@@ -97,24 +97,24 @@ static struct notifier_block __refdata oprofile_cpu_notifier = {
 	.notifier_call = oprofile_cpu_notify,
 };
 
-int oprofile_timer_init(struct oprofile_operations *ops)
+static int oprofile_hrtimer_setup(void)
+{
+	return register_hotcpu_notifier(&oprofile_cpu_notifier);
+}
+
+static void oprofile_hrtimer_shutdown(void)
 {
-	int rc;
+	unregister_hotcpu_notifier(&oprofile_cpu_notifier);
+}
 
-	rc = register_hotcpu_notifier(&oprofile_cpu_notifier);
-	if (rc)
-		return rc;
+int oprofile_timer_init(struct oprofile_operations *ops)
+{
 	ops->create_files	= NULL;
-	ops->setup = NULL;
-	ops->shutdown = NULL;
+	ops->setup		= oprofile_hrtimer_setup;
+	ops->shutdown		= oprofile_hrtimer_shutdown;
 	ops->start		= oprofile_hrtimer_start;
 	ops->stop		= oprofile_hrtimer_stop;
 	ops->cpu_type		= "timer";
 	printk(KERN_INFO "oprofile: using timer interrupt.\n");
 	return 0;
 }
-
-void oprofile_timer_exit(void)
-{
-	unregister_hotcpu_notifier(&oprofile_cpu_notifier);
-}