Re: Possible regression in 3.2 kernel with PCTV Nanostick T2 (em28xx, cxd2820r and tda18271)

[Mauro Carvalho Chehab <mchehab@redhat.com>]

Em 12-01-2012 14:22, Gianluca Gennari escreveu:
> Il 11/01/2012 20:19, Jim Darby ha scritto:
>> On 11/01/12 01:05, Antti Palosaari wrote:
>>> [snip]
>>> Also latest LinuxTV.org devel could be interesting to see. There is
>>> one patch that changes em28xx driver endpoint configuration. But as
>>> that patch is going for 3.3 it should not be cause of issue, but I
>>> wonder if it could fix... Use media_build.git if possible.
>>
>> Well, I built the kernel and installed it. Sadly I get entries of the
>> form: "dvb_frontend_ioctl_legacy: doesn't know how to handle a DVBv3
>> call to delivery system 0" which isn't what I was looking for. I guess
>> there's a new API? It would appear this is from the set frontend call.
>>
>> This is most annoying as I'd like to try out the newest code.
>>
>> Is there a v3 to v3 transition document anywhere?
>>
>> Best regards,
>>
>> Jim.
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> 
> Hi Jim,
> you spotted a regression in the latest media_build release from
> 11/01/2012.
> I had the same problem here:
> 
> "dvb_frontend_ioctl_legacy: doesn't know how to handle a DVBv3 call to
> delivery system 0"
> 
> with 3 totally different sticks (em28xx, dvb-usb, as102).
> 
> Everything was working fine with media_build drivers from 08/01/2011, so
> the problem originates from a patch committed in the last few days.
> 
> In fact, I reverted this patch:
> 
> http://patchwork.linuxtv.org/patch/9443/
> 
> and Kaffeine started working again with all my DVB-T sticks.

Hmm... this patch shouldn't be causing troubles for an application that
only uses DVBv3 call. Is Kaffeine filling the DTV_DELIVERY_SYSTEM with 
SYS_UNDEFINED (0)?

If so, then Kaffeine has a bug, as it is requesting a non-existent
delivery system.

Could you please turn on the dvb-core debug, and see if it is trying to
do a DVBv5 call with DTV_DELIVERY_SYSTEM?

Thanks,
Mauro

> 
> Best regards,
> Gianluca