diff options
| -rw-r--r-- | drivers/cpufreq/amd-pstate.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index ee2decad10af..b0a1c472cc3b 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -529,8 +529,27 @@ cpufreq_policy_put: static int amd_pstate_verify(struct cpufreq_policy_data *policy_data) { + /* + * Initialize lower frequency limit (i.e.policy->min) with + * lowest_nonlinear_frequency which is the most energy efficient + * frequency. Override the initial value set by cpufreq core and + * amd-pstate qos_requests. + */ + if (policy_data->min == FREQ_QOS_MIN_DEFAULT_VALUE) { + struct cpufreq_policy *policy = cpufreq_cpu_get(policy_data->cpu); + struct amd_cpudata *cpudata; + + if (!policy) + return -EINVAL; + + cpudata = policy->driver_data; + policy_data->min = cpudata->lowest_nonlinear_freq; + cpufreq_cpu_put(policy); + } + cpufreq_verify_within_cpu_limits(policy_data); pr_debug("policy_max =%d, policy_min=%d\n", policy_data->max, policy_data->min); + return 0; } @@ -979,7 +998,7 @@ static int amd_pstate_cpu_init(struct cpufreq_policy *policy) policy->fast_switch_possible = true; ret = freq_qos_add_request(&policy->constraints, &cpudata->req[0], - FREQ_QOS_MIN, policy->cpuinfo.min_freq); + FREQ_QOS_MIN, FREQ_QOS_MIN_DEFAULT_VALUE); if (ret < 0) { dev_err(dev, "Failed to add min-freq constraint (%d)\n", ret); goto free_cpudata1; |