From 75a30bf9c036ce178e388ce8bc781cd025c8b889 Mon Sep 17 00:00:00 2001
From: Tao Zeng<tao.zeng@amlogic.com>
Date: Thu, 10  Sep  2015  02:12:45  +0000
Subject: PD#111584: thermal: change cpufreq get API to avoid dead lock

In kernel 3.14, cpufreq driver use rw lock to protect policy data,
so you need put policy after get. We changed a simple and safe API
just for get cpu current frequent.

Change-Id: I48721431e53a76414637a0874c7388458b73303b
---
diff --git a/amlogic_thermal_module.c b/amlogic_thermal_module.c
index 8ee83b6..3965d06 100644
--- a/amlogic_thermal_module.c
+++ b/amlogic_thermal_module.c
@@ -378,14 +378,10 @@ EXPORT_SYMBOL(thermal_alloc);
 
 static void thermal_work(struct work_struct *work)
 {
-    struct cpufreq_policy *policy = cpufreq_cpu_get(0);
     struct amlogic_thermal_platform_data *pdata;
-    int cpu_freq = 0;
+    int cpu_freq = cpufreq_quick_get(0);
 
     pdata = container_of((struct delayed_work *)work, struct amlogic_thermal_platform_data, thermal_work);
-    if (policy) {
-        cpu_freq = policy->cur;
-    }
     if (pdata->temp_valid)
         keep_mode_work(pdata, cpu_freq);
     if (pdata->mode == THERMAL_DEVICE_ENABLED) {             // no need to do this work again if thermal disabled
--
cgit