| Message ID | 20220615144321.262773-2-pierre.gondois@arm.com |
|---|---|
| State | New |
| Headers | show |
| Series | cpufreq: qcom-hw: LMH irq/hotplug interractions | expand |
diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c index 0253731d6d25..8aba73698eda 100644 --- a/drivers/cpufreq/qcom-cpufreq-hw.c +++ b/drivers/cpufreq/qcom-cpufreq-hw.c @@ -442,6 +442,13 @@ static int qcom_cpufreq_hw_cpu_online(struct cpufreq_policy *policy) struct platform_device *pdev = cpufreq_get_driver_data(); int ret; + 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. Fixes: a1eb080a0447 ("cpufreq: qcom-hw: provide online/offline operations") Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> --- drivers/cpufreq/qcom-cpufreq-hw.c | 7 +++++++ 1 file changed, 7 insertions(+)