target/linux/ipq806x/patches-4.9/0056-cpufreq-dt-Add-missing-rcu-locks.patch

   1 From 001a8dcb56ced58c518aaa10a4f0ba5e878705b6 Mon Sep 17 00:00:00 2001
   2 From: Georgi Djakov <georgi.djakov@linaro.org>
   3 Date: Tue, 17 May 2016 16:15:43 +0300
   4 Subject: [PATCH 56/69] cpufreq-dt: Add missing rcu locks
   5
   6 Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
   7 ---
   8  drivers/cpufreq/cpufreq-dt.c | 2 ++
   9  1 file changed, 2 insertions(+)
  10
  11 --- a/drivers/cpufreq/cpufreq-dt.c
  12 +++ b/drivers/cpufreq/cpufreq-dt.c
  13 @@ -143,8 +143,10 @@ static int opp_notifier(struct notifier_
  14                         ret = PTR_ERR(cpu_reg);
  15                         goto out;
  16                 }
  17 +               rcu_read_lock();
  18                 volt = dev_pm_opp_get_voltage(opp);
  19                 freq = dev_pm_opp_get_freq(opp);
  20 +               rcu_read_unlock();
  21
  22                 mutex_lock(&priv->lock);
  23                 if (freq == priv->opp_freq) {