[alsa-devel] Query on Audio DMA using DMAEngine

Mark Brown broonie at kernel.org
Wed Aug 14 14:06:24 CEST 2013

On Tue, Aug 13, 2013 at 11:30:54PM -0500, Joel Fernandes wrote:

> Replying to this thread after a long time but just wondering, how do you
> guarantee in your implementation that DMA will not empty the buffer
> faster than it is filled?

Userspace is ultimately responsible for supplying data - if the
application can't keep up then the application should get an underrun
reported and restart.
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