Em Tue, 21 Sep 2010 15:50:13 +0200 "Hans Verkuil" <hverk...@xs4all.nl> escreveu:
> Hi Mauro, > > > Em 20-09-2010 18:37, Hans Verkuil escreveu: ... > > /* > > * Need to sleep in order to wait for videobufs to complete. > > * It is not a good idea to sleep while waiting for an event with the > > dev > > lock hold, > > * as it will block any other access to the device. Just unlock it while > > waiting, > > * locking it again at the end. > > */ > > > > is_vdev_locked = (q->vdev_lock && mutex_is_locked(q->vdev_lock)) ? true > > : false; > > if (is_vdev_locked) > > mutex_unlock(q->vdev_lock); > > if (intr) > > return wait_event_interruptible(vb->done, > > is_state_active_or_queued(vb, > > q)); > > This obviously needs to save the return value and continue to make sure > the lock is taken again. Yeah, it should be: rc = wait_event_interruptible(vb->done, is_state_active_or_queued(vb, q)); and return rc at the end. > > else > > wait_event(vb->done, is_state_active_or_queued(vb, q)); > > if (is_vdev_locked) > > mutex_lock(q->vdev_lock); > > > > return 0; > > } > > Agreed. Thanks for reviewing this, it was the one patch that I knew I had > to look into more closely. I'll incorporate your changes. Ok, thanks. -- Cheers, Mauro -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
