rk29: cpufreq: fix cpu freq when reboot/shutdown

diff --git a/arch/arm/mach-rk29/cpufreq.c b/arch/arm/mach-rk29/cpufreq.c
index 8216d2c4cd9def78ed5574b6582bf0f43c051da0..fde8e1e4d5102142a551c31b6c0f4ad04a14929f 100755 (executable)
--- a/arch/arm/mach-rk29/cpufreq.c
+++ b/arch/arm/mach-rk29/cpufreq.c
@@ -22,6 +22,7 @@
 #include <linux/cpufreq.h>
 #include <linux/err.h>
 #include <linux/init.h>
+#include <linux/reboot.h>
 #include <linux/regulator/consumer.h>
 #include <linux/suspend.h>
 #include <linux/tick.h>
@@ -510,6 +511,23 @@ static struct notifier_block rk29_cpufreq_pm_notifier = {
        .notifier_call = rk29_cpufreq_pm_notifier_event,
 };
 
+static int rk29_cpufreq_reboot_notifier_event(struct notifier_block *this,
+               unsigned long event, void *ptr)
+{
+       struct cpufreq_policy *policy = cpufreq_cpu_get(0);
+
+       if (policy) {
+               cpufreq_driver_target(policy, limit_avg_freq, DISABLE_FURTHER_CPUFREQ | CPUFREQ_RELATION_L);
+               cpufreq_cpu_put(policy);
+       }
+
+       return NOTIFY_OK;
+}
+
+static struct notifier_block rk29_cpufreq_reboot_notifier = {
+       .notifier_call = rk29_cpufreq_reboot_notifier_event,
+};
+
 static int rk29_cpufreq_fb_notifier_event(struct notifier_block *this,
                unsigned long event, void *ptr)
 {
@@ -547,6 +565,7 @@ static struct notifier_block rk29_cpufreq_fb_notifier = {
 static int __init rk29_cpufreq_register(void)
 {
        register_pm_notifier(&rk29_cpufreq_pm_notifier);
+       register_reboot_notifier(&rk29_cpufreq_reboot_notifier);
        rk29fb_register_notifier(&rk29_cpufreq_fb_notifier);
 
        return cpufreq_register_driver(&rk29_cpufreq_driver);