Merge tag 'pm-extra-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...

[cascardo/linux.git] / drivers / cpufreq / cppc_cpufreq.c

diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c
index 1b2f28f..4852d9e 100644 (file)
--- a/drivers/cpufreq/cppc_cpufreq.c
+++ b/drivers/cpufreq/cppc_cpufreq.c
@@ -80,11 +80,17 @@ static int cppc_cpufreq_set_target(struct cpufreq_policy *policy,
 {
        struct cppc_cpudata *cpu;
        struct cpufreq_freqs freqs;
+       u32 desired_perf;
        int ret = 0;
 
        cpu = all_cpu_data[policy->cpu];
 
-       cpu->perf_ctrls.desired_perf = (u64)target_freq * policy->max / cppc_dmi_max_khz;
+       desired_perf = (u64)target_freq * cpu->perf_caps.highest_perf / cppc_dmi_max_khz;
+       /* Return if it is exactly the same perf */
+       if (desired_perf == cpu->perf_ctrls.desired_perf)
+               return ret;
+
+       cpu->perf_ctrls.desired_perf = desired_perf;
        freqs.old = policy->cur;
        freqs.new = target_freq;