[linux-dvb] Air/SkyStar2 IRQ stop (partial) fix

Johannes Stezenbach js at linuxtv.org
Wed Jun 22 23:24:15 CEST 2005

Patrick Boettcher wrote:
> >Could you give a short description of what the patch does
> >and what "block 300" is?
> Register block 0x300 affects single-PID/group-PID and MAC-filtering.
> The problem was, that after some time of stressing the card with 
> (re)tuning to a (new) frequency simply no more DMA activities took place. 
> Reloading the driver solved the problem, because the Flexcop was 
> reinitialized.
> I now tried to find out, which part of the initialization fixed it. After 
> some testing (+ finding and curing other problems) it turned out, that 
> reinitializing register block 0x3xx made it work again. So I simply added 
> the reset to the start/stop-data-reception-function.
> My affected system is now doing scans for about 6 hours. Without the reset 
> it took 1 hour at most to have to no-data situation.
> A workaround, because I cannot test the signal-loss-issue 
> (losing/regaining signal without restarting data reception), but it 
> can be that this issue is solved as well (with the help of the smaller 
> changes I made). We have to wait for user comments.

OK, thanks for the info.


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