On Wed, 24 Dec 2014, Prarit Bhargava wrote: > > > On 12/23/2014 12:52 PM, Nicholas Mc Guire wrote: > > The successive init_completion calls should be reinit_completion here. > > > > Hi Nicholas, > > I know enough about this code to break it ;) ... what condition did you hit that > led you to this patch? > Was writing up documentation for completion (also posted today) and the intended API is reinit_completion which is just resetting the counter but not touching the related waitqueu. So the failure scenario would be a race between accessing elements on the current wait-queue and the init_completion reinitializing this very wait-queue. Further if switching from init_completion -> reinit_completion brakes anything then it really *is* broken now. thx! hofrat -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
