[PATCH v2 2/4] cpufreq: qcom-hw: Disable LMH irq when disabling policy

[Pierre Gondois]

If LMH (Limits Management Hardware) is available, when a policy is
disabled by unplugging the last online CPU of policy->cpus, the LMH
irq is left enabled.
When the policy is re-enabled with any of the CPU in policy->cpus
being plugged in, qcom_cpufreq_ready() re-enables the irq. This
triggers the following warning:
[  379.160106] Unbalanced enable for IRQ 154
[  379.160120] WARNING: CPU: 7 PID: 48 at kernel/irq/manage.c:774 __enable_irq+0x84/0xc0
Thus disable the irq.

Signed-off-by: Pierre Gondois <pierre.gondois@xxxxxxx>
---
 drivers/cpufreq/qcom-cpufreq-hw.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c
index 8e5eeb982ebd..729346a62a17 100644
--- a/drivers/cpufreq/qcom-cpufreq-hw.c
+++ b/drivers/cpufreq/qcom-cpufreq-hw.c
@@ -470,6 +470,7 @@ static int qcom_cpufreq_hw_cpu_offline(struct cpufreq_policy *policy)
 
 	cancel_delayed_work_sync(&data->throttle_work);
 	irq_set_affinity_hint(data->throttle_irq, NULL);
+	disable_irq_nosync(data->throttle_irq);
 
 	return 0;
 }
-- 
2.25.1