| Message ID | 20220704112739.3020516-2-pierre.gondois@arm.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | qcom-cpufreq-hw LMH irq/hotplug interractions | expand |
diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c index 36c79580fba2..8e5eeb982ebd 100644 --- a/drivers/cpufreq/qcom-cpufreq-hw.c +++ b/drivers/cpufreq/qcom-cpufreq-hw.c @@ -445,6 +445,10 @@ 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",
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> --- drivers/cpufreq/qcom-cpufreq-hw.c | 4 ++++ 1 file changed, 4 insertions(+)