Steven Toth wrote:
Hartmut, Oliver and Trent: Thanks for helping with this issue. I've just
reverted the changeset. We still need a fix at dm1105, au0828-dvb and
maybe
other drivers that call the filtering routines inside IRQ's.
Fix the demux, add a worker thread and allow drivers to call it directly.
I'm not a big fan of videobuf_dvb or having each driver do it's own
thing as an alternative.
Fixing the demux... Would this require and extra buffer copy? probably,
but it's a trade-off between the amount of spent during code management
on a driver by driver basis vs wrestling with videobuf_dvb and all of
problems highlighted on the ML over the last 2 years.
demux->register_driver()
demux->deliver_payload()
demux->unregister_driver()
Then deprecate sw_filter....N() methods.
That would simplify drivers significantly, at the expense of another
buffer copy while deliver-payload() clones the buffer into its internal
state to be more timely.
I meant to add...
The cx18 and a few other smaller drivers (flexcop?) dvb drivers also call
directly. cx23885/cx88 does not.
- Steve
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