[linux-dvb] [BUG] changeset 9029 (http://linuxtv.org/hg/v4l-dvb/rev/aa3e5cc1d833)

Oliver Endriss o.endriss at gmx.de
Sun Feb 15 13:36:16 CET 2009

e9hack wrote:
> Hi,
> this change set is wrong. The affected functions cannot be called from an interrupt
> context, because they may process large buffers. In this case, interrupts are disabled for
> a long time. Functions, like dvb_dmx_swfilter_packets(), could be called only from a
> tasklet. This change set does hide some strong design bugs in dm1105.c and au0828-dvb.c.
> Please revert this change set and do fix the bugs in dm1105.c and au0828-dvb.c (and other
> files).


This changeset _must_ be reverted! It breaks all kernels since 2.6.27
for applications which use DVB and require a low interrupt latency.

It is a very bad idea to call the demuxer to process data buffers with
interrupts disabled!

FYI, a LIRC problem was reported here:

and it has been verified that changeset
causes the problem:

Please revert this changeset immediately and submit a fix to the stable
kernels >= 2.6.27.


VDR Remote Plugin 0.4.0: http://www.escape-edv.de/endriss/vdr/

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