Geniatech S870 ISDB-T does not work properly on kernels above 3.2

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I'm trying to install the v4l-dvb drivers on fedora 17 so I can use my ISDB-T
(Geniatech/MyGica S870) usb card but I'm having some issues...
this is what I did,

- clean install of fedora 17.
- git clone git://linuxtv.org/media_build.git
- cd media_build && ./build && make install
- reboot

then the card starts to work with VLC 2.0, selecting the card as DVB-T.
but other programs like w_scan/vdr/tvheadend/scandvb don't work.


I'm using Fedora17 with kernel 3.4.4-5.fc17.i686


here's the dmesg output, when my card gets plugged in:
http://pastebin.com/QJHrkwsS


here's w_scan output, using "w_scan -c BR >> channels.conf"
http://pastebin.com/pN6vRsUX

* tvheadend detects my card as dvb-s sometimes.
if I restart tvheadend a few times it gets detected as dvb-t (as it normally
would do.) then I'm able to add the multiplexes to tvheadend's list, but
tvheadend scan fails with this error:
http://pastebin.com/U3YCTM6j


and it also produces this message on dmesg:
[  315.447669] dtv_property_cache_sync: doesn't know how to handle a DVBv3 call
to delivery system 0
[  327.947746] dtv_property_cache_sync: doesn't know how to handle a DVBv3 call
to delivery system 0



I tried to do the same thing on ubuntu 12.04 and
downgrading the kernel to 3.2 fixed the problem.
but I need this to work on fedora 17, so how can I fix this?


-- 
Diego Porto
Graduando em Ciência da Computação - UFPB

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