[PATCH v4 04/10] cpufreq: dt: invoke frequency-invariance setter function

[Dietmar Eggemann]

Call the frequency-invariance setter function arch_set_freq_scale()
if the new frequency has been successfully set which is indicated by
dev_pm_opp_set_rate() returning 0.

Cc: Rafael J. Wysocki <r...@rjwysocki.net>
Cc: Viresh Kumar <viresh.ku...@linaro.org>
Signed-off-by: Dietmar Eggemann <dietmar.eggem...@arm.com>
Acked-by: Viresh Kumar <viresh.ku...@linaro.org>
---
 drivers/cpufreq/cpufreq-dt.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c
index fef3c2160691..cbac8a7dbc50 100644
--- a/drivers/cpufreq/cpufreq-dt.c
+++ b/drivers/cpufreq/cpufreq-dt.c
@@ -43,9 +43,17 @@ static struct freq_attr *cpufreq_dt_attr[] = {
 static int set_target(struct cpufreq_policy *policy, unsigned int index)
 {
        struct private_data *priv = policy->driver_data;
+       unsigned long freq = policy->freq_table[index].frequency;
+       int ret;
+
+       ret = dev_pm_opp_set_rate(priv->cpu_dev, freq * 1000);
 
-       return dev_pm_opp_set_rate(priv->cpu_dev,
-                                  policy->freq_table[index].frequency * 1000);
+       if (!ret) {
+               arch_set_freq_scale(policy->related_cpus, freq,
+                                   policy->cpuinfo.max_freq);
+       }
+
+       return ret;
 }
 
 /*
-- 
2.11.0