diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 3655ab9..e8086c7 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -1132,7 +1132,7 @@
 int acpi_processor_hotplug(struct acpi_processor *pr)
 {
 	int ret = 0;
-	struct cpuidle_device *dev = per_cpu(acpi_cpuidle_device, pr->id);
+	struct cpuidle_device *dev;
 
 	if (disabled_by_idle_boot_param())
 		return 0;
@@ -1147,6 +1147,7 @@
 	if (!pr->flags.power_setup_done)
 		return -ENODEV;
 
+	dev = per_cpu(acpi_cpuidle_device, pr->id);
 	cpuidle_pause_and_lock();
 	cpuidle_disable_device(dev);
 	acpi_processor_get_power_info(pr);