cancel_delayed_work
cancel_delayed_work(&intel_dp->panel_vdd_work);
cancel_delayed_work(&dev_priv->drrs.work);
cancel_delayed_work(&dev_priv->drrs.work);
bool cancel_delayed_work(struct delayed_work *dwork);
cancel_delayed_work(dwork);
cancel_delayed_work(&rdev->pm.dynpm_idle_work);
cancel_delayed_work(&rdev->pm.dynpm_idle_work);