[PATCH v5 04/10] cpufreq: dt: invoke frequency-invariance setter function

From: Dietmar Eggemann
Date: Tue Sep 26 2017 - 12:42:36 EST


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 <rjw@xxxxxxxxxxxxx>
Cc: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
Signed-off-by: Dietmar Eggemann <dietmar.eggemann@xxxxxxx>
Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
---
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 d83ab94d041a..545946ad0752 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