On Thu, Nov 12, 2015 at 10:22 PM, Peter Hurley <peter@xxxxxxxxxxxxxxxxxx> wrote: > On 11/12/2015 02:57 PM, One Thousand Gnomes wrote: > An illustrative (kernel-space) example is the mess that is dmaengine_pause(). > Some DMA implementations provide the means to stop and restart DMA without > losing data and some DMA implementations do not. Unfortunately, some > advertise they support dmaengine_pause() but only for lossy uses like audio. > Because the api hides this, the query interface for pause support is > useless. The DMA pause() call means only pause with possibility to resume. There is a resume() call as well. Any driver which treats pause() as a complete stop is buggy driver and should be fixed. -- With Best Regards, Andy Shevchenko -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
