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| author | Jonghwan Choi <jhbird.choi@samsung.com> | 2012-12-23 15:57:39 -0800 |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2012-12-23 15:57:39 -0800 |
| commit | 857d90f7014f4fe0acc49947ad5309174111a4e8 (patch) | |
| tree | f0840e14e18ae866c30f56f2cf852bc47341d677 /drivers/cpufreq/exynos-cpufreq.c | |
| parent | 184cddd1e004d3ebd473f9e1ce20dec1d2576fd1 (diff) | |
| download | linux-3.10-857d90f7014f4fe0acc49947ad5309174111a4e8.tar.gz linux-3.10-857d90f7014f4fe0acc49947ad5309174111a4e8.tar.bz2 linux-3.10-857d90f7014f4fe0acc49947ad5309174111a4e8.zip | |
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>
Diffstat (limited to 'drivers/cpufreq/exynos-cpufreq.c')
| -rw-r--r-- | drivers/cpufreq/exynos-cpufreq.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/cpufreq/exynos-cpufreq.c b/drivers/cpufreq/exynos-cpufreq.c index 0e415e5fb53..0d40eb7b1de 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); |