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SubjectRe: dmaengine.c: question about device_alloc_chan_resources
Timur Tabi <timur@freescale.com> wrote:
> Haavard Skinnemoen wrote:
>
> > I guess so. What would be even more simple is to simply prevent other
> > clients from taking a channel once someone has acked it, which would be
> > perfect for my purposes, but perhaps not everyone else's...
>
> I'm not clear on how your driver works, but doesn't it run continuous tests on
> all channels all the time? If so, wouldn't your proposal prevent other drivers
> from ever getting a DMA channel?

You can explicitly tell it which channel(s) to use. If you run it on
all channels, it will already prevent any dmaslave clients from ever
getting a channel.

dmatest is meant for testing only, and has a major impact on system
performance when it's running, so it's IMO not a very interesting use
case.

Haavard


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