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 <[e-mail]>

drivers/oprofile/oprof.c

···
 		return 0;
 
 	/* failed */
-	if (timer_mode)
-		oprofile_timer_exit();
-	else
+	if (!timer_mode)
 		oprofile_arch_exit();
 
 	return err;
···
 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

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