[linux-dvb] KNC1 DVB-S CI?

e9hack e9hack at googlemail.com
Sat Jul 7 11:23:08 CEST 2007

P. van Gaans wrote:

> Some more news. I'm now looking at dvb_ca_en50221.c and I'm pretty sure
> the solution is in here and not in budget-av.c. Somewhere around line
> 270 is a thing that loops in a while and breaks after timeout. I removed
> the break (so it keeps looping). Now I see the following when I insert a
> CAM:
> [   71.764000] budget-av: cam inserted A
> [   82.144000] dvb_ca adaptor 0: PC card did not respond :(
> So at least there's no more infinite loop with ejected-inserted-ejected
> and so on. But it doesn't work either. It reaches 
> DVB_CA_SLOTSTATE_WAITREADY and times out there. From there it should 
> automatically change state, but it doesn't. Now I'm getting a little 
> stuck, because I don't really know what it's doing and what piece really 
> gets stuck.
> I also removed the timeout from slotstate_waitready, now I don't get 
> errors anymore, but it (of course) doesn't work. And I broke the ability 
> to eject the CAM, I'm guessing it's stuck in a loop after I ejected and 
> re-inserted the CAM.

It seems, there is a little bug within the debi functions. If a debi error occurs, SPCI_DEBI_S is not reset within PSR.
In this case, saa7146_wait_for_debi_done returns always ETIMEDOUT. Ttpci_budget_debiread/write doesn't upload a debi
command anymore. For testing, you can remove the first 'return result;' statement in both functions.

- Hartmut

More information about the linux-dvb mailing list