On Thu, Dec 08, 2016 at 11:44:53AM +0000, Måns Rullgård wrote: > Vinod Koul <vinod.koul@xxxxxxxxx> writes: > > > On Wed, Dec 07, 2016 at 04:45:58PM +0000, Måns Rullgård wrote: > >> Vinod Koul <vinod.koul@xxxxxxxxx> writes: > >> > >> > On Tue, Dec 06, 2016 at 01:14:20PM +0000, Måns Rullgård wrote: > >> >> > >> >> That's not going to work very well. Device drivers typically request > >> >> dma channels in their probe functions or when the device is opened. > >> >> This means that reserving one of the few channels there will inevitably > >> >> make some other device fail to operate. > >> > > >> > No that doesnt make sense at all, you should get a channel only when you > >> > want to use it and not in probe! > >> > >> Tell that to just about every single driver ever written. > > > > Not really, few do yes which is wrong but not _all_ do that. > > Every driver I ever looked at does. Name one you consider "correct." That only tells me you haven't looked enough and want to rant! FWIW look at ALSA-dmaengine lib, thereby every audio driver that uses it. I could find other examples and go on and on, but that's besides the point and looks like you don't want to listen to people telling you something.. -- ~Vinod -- 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
