From 857d90f7014f4fe0acc49947ad5309174111a4e8 Mon Sep 17 00:00:00 2001 From: Jonghwan Choi Date: Sun, 23 Dec 2012 15:57:39 -0800 Subject: [PATCH] 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 Signed-off-by: Kukjin Kim --- drivers/cpufreq/exynos-cpufreq.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) 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 @@ 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); -- 2.7.4