dvb fronted: LOCK but no data received.

linux-dvb Andrea 1 participant 1 message Mar 11, 2008 Media (V4L/DVB)

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Andrea

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2008-03-11 23:15 UTC #0 lore raw

Hi,

I'd like to understand the behavior and meaning of the LOCK returned by the fronted.

If I open the fronted in readonly, and ask for the INFO, it is possible that I get a LOCK but no data is actually received.

This because the fronted receives data ONLY while it is opened in READ/WRITE.

In dvb_frontend.c, in dvb_frontend_open, the fronted is started via dvb_frontend_start
only if it opened in READ/WRITE.

I see it as a misbehavior:

1) either a LOCK should NOT be returned
2) or the frontend should be started in any case (even if READ only)

Which ioctl call should I use to know if the fronted is currently active?