[PATCH] msr.c: use register_hotcpu_notifier()
register_cpu_notifier() cannot do anything in a module, in a
!CONFIG_HOTPLUG_CPU kernel.
Cc: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/i386/kernel/msr.c b/arch/i386/kernel/msr.c
index d022cb8..5c29a9f 100644
--- a/arch/i386/kernel/msr.c
+++ b/arch/i386/kernel/msr.c
@@ -251,7 +251,9 @@
return err;
}
-static int msr_class_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
+#ifdef CONFIG_HOTPLUG_CPU
+static int msr_class_cpu_callback(struct notifier_block *nfb,
+ unsigned long action, void *hcpu)
{
unsigned int cpu = (unsigned long)hcpu;
@@ -270,6 +272,7 @@
{
.notifier_call = msr_class_cpu_callback,
};
+#endif
static int __init msr_init(void)
{
@@ -292,7 +295,7 @@
if (err != 0)
goto out_class;
}
- register_cpu_notifier(&msr_class_cpu_notifier);
+ register_hotcpu_notifier(&msr_class_cpu_notifier);
err = 0;
goto out;
@@ -315,7 +318,7 @@
class_device_destroy(msr_class, MKDEV(MSR_MAJOR, cpu));
class_destroy(msr_class);
unregister_chrdev(MSR_MAJOR, "cpu/msr");
- unregister_cpu_notifier(&msr_class_cpu_notifier);
+ unregister_hotcpu_notifier(&msr_class_cpu_notifier);
}
module_init(msr_init);