[pvrusb2] frequencies below 50MHz

[Tobias Knieper]

On Friday 22 June 2007, Mike Isely wrote:
> On Fri, 22 Jun 2007, Tobias Knieper wrote:
> > On Friday 22 June 2007, Mike Isely wrote:
> > > On Fri, 22 Jun 2007, Tobias Knieper wrote:
> > > > Hello list,
> > > > I'm using my pvrusb2 box (model 29039 Rev D257 PAL-B/G-I-D/K-SECAM)
> > > > for a year or so but never get it to work with a channel of frequency
> > > > 48,25 MHz (PAL, Germany). The next channel at frequency 55,25 MHz
> > > > works fine.
> > > >
> > > > Are there any hardware or driver limitations to use that frequency?
> > > > Or can anyone hint me to a line of code which might be the reason for
> > > > the limitation?
> > > >
> > > > Thanks and best regards,
> > > > Tobias Knieper
> > >
> > > There are range checks in the driver.  However to understand this
> > > correctly I need to know which driver version you are using.  Is this
> > > an in-kernel driver, and if so which kernel version?
> > >
> > > The current driver version range checks against the "legal" frequency
> > > range reported by the tuner module itself.  But older pvrusb2 driver
> > > versions used a hardcoded assumedly conservative limit - and the bottom
> > > at that time was 55.25MHz.  So, which driver version are you running?
> > > If it is in-kernel, tell me the kernel version.  Output from dmesg will
> > > help here as well.
> >
> > Hello Mike,
> > the machine is running ubuntu feisty with kernel 2.6.20-16-386. The
> > loaded pvrusb2 module is an in-kernel one.
>
> OK, thanks.
>
> That would then correspond to the state that the pvrusb2 driver was in
> roughly back in October 2006, which I believe predates the improvement
> to the range checking.  I will check this tonight (about 9 hours from
> now) to be certain.  Going to a 2.6.21 kernel should solve this, or
> downloading, building, and installing the latest standalone pvrusb2
> driver should also solve it.

Hello Mike,
thanks for your hint, I compiled the sources by myself and now the channel 
works just fine. You made my day! :-)

Regards,
Tobias