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cpufreq: Clarify the comment in cpufreq_set_policy()

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One of the responsibility of the ->verify() callback is to make sure
that the policy's min frequency is <= max frequency as this isn't
guaranteed by the QoS framework which gave us those values.

Update the comment in cpufreq_set_policy() to clarify that.

Suggested-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
[ rjw: Minor changes of the new comment ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Viresh Kumar 2019-10-22 15:47:57 +05:30 committed by Rafael J. Wysocki
parent d6d5df1db6
commit 737ffb27f2
1 changed files with 4 additions and 1 deletions
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5
drivers/cpufreq/cpufreq.c
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@ -2385,7 +2385,10 @@ int cpufreq_set_policy(struct cpufreq_policy *policy,
new_policy->min = freq_qos_read_value(&policy->constraints, FREQ_QOS_MIN); new_policy->min = freq_qos_read_value(&policy->constraints, FREQ_QOS_MIN);
new_policy->max = freq_qos_read_value(&policy->constraints, FREQ_QOS_MAX); new_policy->max = freq_qos_read_value(&policy->constraints, FREQ_QOS_MAX);
/* verify the cpu speed can be set within this limit */ /*
* Verify that the CPU speed can be set within these limits and make sure
* that min <= max.
*/
ret = cpufreq_driver->verify(new_policy); ret = cpufreq_driver->verify(new_policy);
if (ret) if (ret)
return ret; return ret;