- /* but only if not already active */
- if (!hrtimer_active(&chan->mbox->poll_hrt))
- hrtimer_start(&chan->mbox->poll_hrt, 0, HRTIMER_MODE_REL);
+ /* kick start the timer immediately to avoid delays */
+ spin_lock_irqsave(&chan->mbox->poll_hrt_lock, flags);
+ hrtimer_start(&chan->mbox->poll_hrt, 0, HRTIMER_MODE_REL);
+ spin_unlock_irqrestore(&chan->mbox->poll_hrt_lock, flags);