Hi Udo,

On Sun, 18 Jul 2010 15:45:02 +0200, Udo Richter wrote
> In short, -1 receivers are supposed to be disconnectable at any time,
> but transfer mode runs at -1 priority too, and should not be
> disconnected. Transfer mode runs at -1 so that an existing transfer mode
> does not block channel switching. The solution is to let the channel
> switch code know that the transfer source device will soon be available.

Good shot. Streamdev suffers from a similar problem and would benefit from
this patch, too. If a streamdev-client prepars to switch channels, the current
stream blocks a device which will also become available a little later. At the
moment streamdev temporarily detaches the client's receiver if no other device
is able to do the job anyway. With the volatile flag this should no longer be
necessary.

Cheers,
Frank


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