X-Git-Url: http://git.cascardo.info/?a=blobdiff_plain;ds=sidebyside;f=drivers%2Fcpufreq%2Fcppc_cpufreq.c;h=4852d9efe74e7c470169b25babbb3355e8a5a0b6;hb=ef98988ba369da88bab8a4d457407e71bbe160fa;hp=1b2f28f69a8142fce5edcd02c2f85f2e4f0c4a72;hpb=d4e65476bc68dbc9231b3c772b71f1576579b6fb;p=cascardo%2Flinux.git

diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c
index 1b2f28f69a81..4852d9efe74e 100644
--- 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;