cpufreq: exynos: Check old & new frequency early

If old & new freq have the same frequency, no need to call
cpufreq notifier & regulator function.

Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/cpufreq/exynos-cpufreq.c b/drivers/cpufreq/exynos-cpufreq.c
index 0e415e5fb53b..0d40eb7b1dee 100644
--- a/drivers/cpufreq/exynos-cpufreq.c
+++ b/drivers/cpufreq/exynos-cpufreq.c
@@ -87,6 +87,9 @@ static int exynos_target(struct cpufreq_policy *policy,
         freqs.new = freq_table[index].frequency;
         freqs.cpu = policy->cpu;
 
+        if (freqs.new == freqs.old)
+                goto out;
+
         /*
          * ARM clock source will be changed APLL to MPLL temporary
          * To support this level, need to control regulator for
@@ -113,8 +116,8 @@ static int exynos_target(struct cpufreq_policy *policy,
         if (safe_arm_volt)
                 regulator_set_voltage(arm_regulator, safe_arm_volt,
                                       safe_arm_volt);
-        if (freqs.new != freqs.old)
-                exynos_info->set_freq(old_index, index);
+
+        exynos_info->set_freq(old_index, index);
 
         for_each_cpu(freqs.cpu, policy->cpus)
                 cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);