1 files changed, 26 insertions, 1 deletions

diff --git a/arch/arm/kernel/leds.c b/arch/arm/kernel/leds.c
index 0f107dcb034..136e8376a3e 100644
--- a/arch/arm/kernel/leds.c
+++ b/arch/arm/kernel/leds.c
@@ -9,6 +9,8 @@
  */
 #include <linux/module.h>
 #include <linux/init.h>
+#include <linux/notifier.h>
+#include <linux/cpu.h>
 #include <linux/sysdev.h>
 #include <linux/syscore_ops.h>
 
@@ -101,6 +103,25 @@ static struct syscore_ops leds_syscore_ops = {
         .resume         = leds_resume,
 };
 
+static int leds_idle_notifier(struct notifier_block *nb, unsigned long val,
+                                void *data)
+{
+        switch (val) {
+        case IDLE_START:
+                leds_event(led_idle_start);
+                break;
+        case IDLE_END:
+                leds_event(led_idle_end);
+                break;
+        }
+
+        return 0;
+}
+
+static struct notifier_block leds_idle_nb = {
+        .notifier_call = leds_idle_notifier,
+};
+
 static int __init leds_init(void)
 {
         int ret;
@@ -109,8 +130,12 @@ static int __init leds_init(void)
                 ret = sysdev_register(&leds_device);
         if (ret == 0)
                 ret = sysdev_create_file(&leds_device, &attr_event);
-        if (ret == 0)
+
+        if (ret == 0) {
                 register_syscore_ops(&leds_syscore_ops);
+                idle_notifier_register(&leds_idle_nb);
+        }
+
         return ret;
 }