[PATCH] acpi_processor_latency_notifier(): UP warning fix
drivers/acpi/processor_idle.c:1112: warning: 'smp_callback' defined but not used
Cc: Len Brown <lenb@kernel.org>
Cc: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 526387d..e67144c 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -1108,6 +1108,7 @@
.release = single_release,
};
+#ifdef CONFIG_SMP
static void smp_callback(void *v)
{
/* we already woke the CPU up, nothing more to do */
@@ -1129,6 +1130,7 @@
static struct notifier_block acpi_processor_latency_notifier = {
.notifier_call = acpi_processor_latency_notify,
};
+#endif
int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
struct acpi_device *device)
@@ -1146,7 +1148,9 @@
"ACPI: processor limited to max C-state %d\n",
max_cstate);
first_run++;
+#ifdef CONFIG_SMP
register_latency_notifier(&acpi_processor_latency_notifier);
+#endif
}
if (!pr)
@@ -1218,7 +1222,9 @@
* copies of pm_idle before proceeding.
*/
cpu_idle_wait();
+#ifdef CONFIG_SMP
unregister_latency_notifier(&acpi_processor_latency_notifier);
+#endif
}
return 0;