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>
diff --git a/drivers/cpufreq/exynos-cpufreq.c b/drivers/cpufreq/exynos-cpufreq.c
index 0e415e5..0d40eb7 100644
--- a/drivers/cpufreq/exynos-cpufreq.c
+++ b/drivers/cpufreq/exynos-cpufreq.c
@@ -87,6 +87,9 @@
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 @@
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);