[linux-dvb] Re: More on reading from 4 cards simultaneously

[Johannes Stezenbach <js@convergence.de>]

Johann Hanne wrote:
> 
> I should have checked this earlier...: If i use TWO processes (the first one
> reading from 3 boards, the second one reading from the 4th), i get data from
> all 4 boards.
> 
> I.e. only if all 4 boards (demux and dvr) are open()ed from the same
> process, the first board (dvr) stops giving data to me, as soon as I open the 4th.
> 
> I'm currently using a poll() loop to check if data is available. I've also
> tried using POLLIN | POLLERR to see if I get errors from the first dvr, but I
> don't.
> 
> Could this be a dvb driver problem, or might it be a general kernel problem?
> The problem is the same on kernel 2.4.24 w/ dvb driver 1.1.0 and on a
> vanilla 2.6.3 kernel.

Sounds strange. Do you have some example code that you could post?

I don't have 4 cards but maybe someone else could try to reproduce
your problem.

Johannes


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