Re: [PATCH] cpufreq: Clarify the comment in cpufreq_set_policy()

From: Rafael J. Wysocki
Date: Mon Oct 28 2019 - 11:23:32 EST


On Tuesday, October 22, 2019 12:17:57 PM CET Viresh Kumar wrote:
> 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@xxxxxxxxx>
> Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
> ---
> drivers/cpufreq/cpufreq.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
> index 2e698b5f0f80..b4b5f11c2f1e 100644
> --- a/drivers/cpufreq/cpufreq.c
> +++ b/drivers/cpufreq/cpufreq.c
> @@ -2384,7 +2384,10 @@ int cpufreq_set_policy(struct cpufreq_policy *policy,
> new_policy->min = freq_qos_read_value(&policy->constraints, FREQ_QOS_MIN);
> 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 this limit and make sure
> + * min <= max.
> + */
> ret = cpufreq_driver->verify(new_policy);
> if (ret)
> return ret;
>

Applying for 5.5, thanks!