Moin moin!
Sorry I'm posting this here rather than to the more specific

linux-dvb@ mailing list where I'd rather this appear, but my

attempts to surbscibe!@! to that list have been rejected, first

as an invalid e-mail, then an insecure e-mail, and I've been

unable to progress further from this throwaway account.
Feel free to redirect/repost this message there if you're a

qualified developer and feel it's more appropriate.
There is a change that was introduced to the file

drivers/media/dvb/ttusb-dec/ttusbdecfe.c

sometime in the not-too-recent past and which resulted in breaking

the support which early 2.6.1x kernels had for my Hauppauge

DEC-3000s DVB-S device.
The particular code (below) checks the value in a register to

decide the tuning status -- hitherto one had to assume the device

was properly tuned and receiving signal and everything.
     60         switch(result[3]) {

     61                 case 1:  /* not tuned yet */

     62                 case 2:  /* no signal/no lock*/

     63                         break;

     64                 case 3:  /* signal found and locked*/

     65                         *status = FE_HAS_SIGNAL | FE_HAS_VITERBI |

     66                         FE_HAS_SYNC | FE_HAS_CARRIER | FE_HAS_LOCK;

     67                         break;

     68                 case 4:

     69                         *status = FE_TIMEDOUT;

     70                         break;

     71                 default:

     72                         pr_info("%s: returned unknown value: %d\n",

     73                                 __func__, result[3]);

     74                         return -EIO;

     75         }
Unfortunately, while this might work for the other flavours of

card (DVB-T?) supported by this code, in the case of my particular

device for DVB-S, the unknown value returned is 0 and does not

change regardless of tuning status.
I haven't checked whether a different register on my particular

device contains a usable value for the above code....
[ message continues ]

These closed lists are a pain.
Lots of subprojects have moved their lists to vger.kernel.org in recent
Thanks.  Cc's added.
--

So only dvb-s support is broken. The DEC-2000t (hopefully) still works.

If there is still somebody around using that thing ;)
Indeed I added the above code only for the dec2000-t model. Since I have no

idea how that stuff works on the dec3000, probably the best thing to do is to

revert to the old behaviour for dec3000s models, i.e. just pretend we always have
well, i remember at least one report on the linux-dvb ml a long time ago

and iirc I have posted the same patch there, but it didn't help.

We never figured out how to make that particular dec3000s work.

And without hw documentation this is more like a puzzle game.

Which is rather demotivating.