drm/i915/hotplug: Track temporary rpm wakeref

Keep track of the temporary rpm wakeref inside hotplug detection, so
that we can cancel it immediately upon release and so clearly identify
leaks.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190114142129.24398-12-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/intel_hotplug.c b/drivers/gpu/drm/i915/intel_hotplug.c
index b1a9cb9..e027d2b 100644 (file)
--- a/drivers/gpu/drm/i915/intel_hotplug.c
+++ b/drivers/gpu/drm/i915/intel_hotplug.c
@@ -226,9 +226,10 @@ static void intel_hpd_irq_storm_reenable_work(struct work_struct *work)
                container_of(work, typeof(*dev_priv),
                             hotplug.reenable_work.work);
        struct drm_device *dev = &dev_priv->drm;
+       intel_wakeref_t wakeref;
        enum hpd_pin pin;
 
-       intel_runtime_pm_get(dev_priv);
+       wakeref = intel_runtime_pm_get(dev_priv);
 
        spin_lock_irq(&dev_priv->irq_lock);
        for_each_hpd_pin(pin) {
@@ -261,7 +262,7 @@ static void intel_hpd_irq_storm_reenable_work(struct work_struct *work)
                dev_priv->display.hpd_irq_setup(dev_priv);
        spin_unlock_irq(&dev_priv->irq_lock);
 
-       intel_runtime_pm_put_unchecked(dev_priv);
+       intel_runtime_pm_put(dev_priv, wakeref);
 }
 
 bool intel_encoder_hotplug(struct intel_encoder *encoder,