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cpufreq: Clear policy->cpus even for the last CPU 

We clear policy->cpus mask while CPUs are hotplugged out. We do it for all CPUs
except the last CPU of the policy. I don't remember what the rationale behind
that was, but I couldn't think of anything that will break if we remove this
conditional clearing and always clear policy->cpus.

The benefit we get out of it is, we can know if a policy is active or not by
checking if this field is empty or not. That will be used by later commits.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Saravana Kannan <skannan@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
hifive-unleashed-5.1
Viresh Kumar 2015-02-19 17:02:07 +05:30 committed by Rafael J. Wysocki
parent bb29ae152e
commit 303ae72307
1 changed files with 1 additions and 3 deletions
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4
drivers/cpufreq/cpufreq.c
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@ -1430,9 +1430,7 @@ static int __cpufreq_remove_dev_finish(struct device *dev,
down_write(&policy->rwsem);
cpus = cpumask_weight(policy->cpus);
if (cpus > 1)
cpumask_clear_cpu(cpu, policy->cpus);
cpumask_clear_cpu(cpu, policy->cpus);
up_write(&policy->rwsem);
/* If cpu is last user of policy, free policy */