common DVB USB issues we has currently

common DVB USB issues we has currently

[Antti Palosaari]

Hello,
Here we are, that's the first part I am going to fix as a GSoC project. 
Work is planned to start after two weeks but better to discuss beforehand.

And wish-list is now open!

I see two big DVB USB issues including multiple small issues;

1)
Current static structure is too limited as devices are more dynamics 
nowadays. Driver should be able to probe/read from eeprom device 
configuration.

Fixing all of those means rather much work - I think new version of DVB 
USB is needed.

http://www.mail-archive.com/linux-media@vger.kernel.org/msg44996.html


2)
Suspend/resume is not supported and crashes Kernel. I have no idea what 
is wrong here and what is needed. But as it has been long term known 
problem I suspect it is not trivial.

http://www.spinics.net/lists/linux-media/msg10293.html


regards
Antti

Re: common DVB USB issues we has currently

[Devin Heitmueller]

Hi Antti,

On Thu, May 3, 2012 at 10:18 AM, Antti Palosaari
> 1)
> Current static structure is too limited as devices are more dynamics
> nowadays. Driver should be able to probe/read from eeprom device
> configuration.
>
> Fixing all of those means rather much work - I think new version of DVB USB
> is needed.
>
> http://www.mail-archive.com/linux-media@vger.kernel.org/msg44996.html

What does this link above have to do with problem #1?  Did you perhaps
cut/paste the wrong link?

> 2)
> Suspend/resume is not supported and crashes Kernel. I have no idea what is
> wrong here and what is needed. But as it has been long term known problem I
> suspect it is not trivial.
>
> http://www.spinics.net/lists/linux-media/msg10293.html

I doubt this is a dvb-usb problem, but rather something specific to
the realtek parts (suspend/resume does work with other devices that
rely on dvb-usb).

Cheers,

Devin

-- 
Devin J. Heitmueller - Kernel Labs
http://www.kernellabs.com

Re: common DVB USB issues we has currently

[Brian J. Murrell]

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On 12-05-03 10:48 AM, Devin Heitmueller wrote:
> 
> I doubt this is a dvb-usb problem, but rather something specific to
> the realtek parts (suspend/resume does work with other devices that
> rely on dvb-usb).

Dunno if it's at all relevant but I used to be able (circa 2.6.32
perhaps?  it's a bit foggy now) to suspend/resume with my HVR-950q
installed and modules loaded.  Now suspending with them loaded hangs the
suspend and they can't even reliably be rmmod/modprobed pre and post
suspend/resume.

I just wonder if that change in behavior is pointing at something.

Cheers,
b.




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Re: common DVB USB issues we has currently

[Antti Palosaari]

to 3.5.2012 17:59 Brian J. Murrell kirjoitti:
> On 12-05-03 10:48 AM, Devin Heitmueller wrote:
>>
>> I doubt this is a dvb-usb problem, but rather something specific to
>> the realtek parts (suspend/resume does work with other devices that
>> rely on dvb-usb).
>
> Dunno if it's at all relevant but I used to be able (circa 2.6.32
> perhaps?  it's a bit foggy now) to suspend/resume with my HVR-950q
> installed and modules loaded.  Now suspending with them loaded hangs the
> suspend and they can't even reliably be rmmod/modprobed pre and post
> suspend/resume.
>
> I just wonder if that change in behavior is pointing at something.

That means HVR-950q is not "DVB-USB" device OR it does not have
DVB-USB-firmware to load by the DVB-USB-driver.

regards
Antti

Re: common DVB USB issues we has currently

[Jose Alberto Reguero]

On Jueves, 3 de mayo de 2012 10:48:43 Devin Heitmueller escribió:
> Hi Antti,
> 
> On Thu, May 3, 2012 at 10:18 AM, Antti Palosaari
> 
> > 1)
> > Current static structure is too limited as devices are more dynamics
> > nowadays. Driver should be able to probe/read from eeprom device
> > configuration.
> > 
> > Fixing all of those means rather much work - I think new version of DVB
> > USB
> > is needed.
> > 
> > http://www.mail-archive.com/linux-media@vger.kernel.org/msg44996.html
> 
> What does this link above have to do with problem #1?  Did you perhaps
> cut/paste the wrong link?
> 
> > 2)
> > Suspend/resume is not supported and crashes Kernel. I have no idea what is
> > wrong here and what is needed. But as it has been long term known problem
> > I
> > suspect it is not trivial.
> > 
> > http://www.spinics.net/lists/linux-media/msg10293.html
> 
> I doubt this is a dvb-usb problem, but rather something specific to
> the realtek parts (suspend/resume does work with other devices that
> rely on dvb-usb).
> 
> Cheers,
> 
> Devin

I have the resume problem with the terratec H7.

http://www.mail-archive.com/linux-media@vger.kernel.org/msg45590.html

Jose Alberto

Re: common DVB USB issues we has currently

[Antti Palosaari]

to 3.5.2012 20:03 Jose Alberto Reguero kirjoitti:
> On Jueves, 3 de mayo de 2012 10:48:43 Devin Heitmueller escribió:
>> Hi Antti,
>>
>> > 2)
>> > Suspend/resume is not supported and crashes Kernel. I have no idea
>> what is
>> > wrong here and what is needed. But as it has been long term known
>> problem
>> > I
>> > suspect it is not trivial.
>> >
>> > http://www.spinics.net/lists/linux-media/msg10293.html
>>
>> I doubt this is a dvb-usb problem, but rather something specific to
>> the realtek parts (suspend/resume does work with other devices that
>> rely on dvb-usb).
>>
>> Cheers,
>>
>> Devin
>
> I have the resume problem with the terratec H7.
>
> http://www.mail-archive.com/linux-media@vger.kernel.org/msg45590.html
>
> Jose Alberto

It crashes Kernel for every DVB USB device having DVB USB firmware.

regards
Antti