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cpufreq: qcom-hw: Reset cancel_throttle when policy is re-enabled

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If LMH (Limits Management Hardware) is available, when a policy is
disabled by unplugging the last online CPU of policy->cpus,
qcom_cpufreq_hw_cpu_offline() sets cancel_throttle=true.
cancel_throttle is not reset when the policy is re-enabled with any
of the CPU in policy->cpus being plugged in. So reset it.

This patch also adds an early exit check.

Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Pierre Gondois 2022-07-04 13:27:36 +02:00 committed by Viresh Kumar
parent 9de0d75bb3
commit cdcf8eb3e7
1 changed files with 4 additions and 0 deletions
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4
drivers/cpufreq/qcom-cpufreq-hw.c
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@ -444,6 +444,10 @@ static int qcom_cpufreq_hw_cpu_online(struct cpufreq_policy *policy)
if (data->throttle_irq <= 0)
return 0;
mutex_lock(&data->throttle_lock);
data->cancel_throttle = false;
mutex_unlock(&data->throttle_lock);
ret = irq_set_affinity_hint(data->throttle_irq, policy->cpus);
if (ret)
dev_err(&pdev->dev, "Failed to set CPU affinity of %s[%d]\n",