On Monday 02 January 2006 20:17, [EMAIL PROTECTED] wrote:
> Hans,
>
> I wasn't able to apply the patch ( I'm a newbie w/ linux ) so I just
> modified the source with the information contained in your file.
>
> no hotplug gives:
>
> [ 1348.171567] ivtv0: loaded /lib/modules/v4l-cx2341x-enc.fw firmware
> (262144 bytes) [ 1348.423225] ivtv0: firmware sum = 0084a9cb
>
>
> hotplug gives:
>
> [ 1865.847204] ivtv0: loaded v4l-cx2341x-enc.fw firmware (262144
> bytes, sum = 0084a9cb)
> [ 1866.098870] ivtv0: firmware sum = 00206879
>
> This is very interesting, it loads the firmware in load_fw_direct and
> then has the incorrect firmware in ivtv_enc_firmware_copy. The memcpy
> was successful, it did not return NULL(I checked).
>
> Could something else be overwriting this variable? Another thread
> perhaps?
>
> I'm willing to continue debugging but need a little help.
Can you move the v4l-cx25840.fw to another name? The only thing I can
think of right now is that the load of that firmware disturbs the load
of this firmware. So by moving v4l-cx25840.fw out of the way the
cx25840 no longer can interfere. If that makes no difference, then try
to rmmod ivtv followed by modprobe ivtv (since cx25840 was already
loaded that too excludes any interference of cx25840).
Hans
>
> Thanks,
>
> Michael
>
> Quoting Hans Verkuil <[EMAIL PROTECTED]>:
> > Michael,
> >
> > I've attached a patch for ivtv-firmware.c. I'm curious what the
> > results will be. To be continued tomorrow...
> >
> > Hans
> >
> > On Monday 02 January 2006 01:15, [EMAIL PROTECTED] wrote:
> > > Hans,
> > >
> > > Your guess was bang on - reverting to the "old way" of loading
> > > the firmware results in success. Something in the hotplug is
> > > causing grief.
> > >
> > > If you can give me a hand with the C, I can attempt the
> > > summations that you have requested. It would be nice to get to
> > > the bottom of this one.. I'm probably not the only one that has
> > > run into this problem.
> > >
> > > Cheers,
> > >
> > > Michael
> > >
> > > Quoting Hans Verkuil <[EMAIL PROTECTED]>:
> > > > On Monday 02 January 2006 00:27, [EMAIL PROTECTED] wrote:
> > > > > Hans,
> > > > >
> > > > > I've performed the operations as requested, and achieve the
> > > > > same result - I assume this removes zero padding on the
> > > > > firmware file?
> > > >
> > > > correct
> > > >
> > > > > [ 307.521854] ivtv0: loaded v4l-cx2341x-enc.fw firmware
> > > > > (262144 bytes) [ 307.753271] ivtv0 warning: Encoder mailbox
> > > > > not found [ 307.784732] ivtv0 warning: Decoder mailbox not
> > > > > found [ 307.784735] ivtv0: Error locating firmware.
> > > > > [ 307.791075] ivtv0: Error -12 on initialization
> > > > > [ 307.791084] ivtv: probe of 0000:02:06.0 failed with error
> > > > > -12 [ 307.791090] ivtv: ==================== END INIT IVTV
> > > > > ====================
> > > > >
> > > > > To be certain that the firmware was correct, I reloaded 0.4.0
> > > > > using the shortened firmware file and was able to watch tv
> > > > > once again.
> > > > >
> > > > > I believe we have ruled out the firmware.. could there be
> > > > > something in ivtv 0.4.1/2 that is causing the grief? Is there
> > > > > some means of enabling more verbose debug messages? I don't
> > > > > mind recompiling...
> > > >
> > > > Well, ivtv-0.4.1 switched to the hotplug mechanism. My guess
> > > > the problem is with that.
> > > >
> > > > Edit ivtv-firmware.c, look for CONFIG_FW_LOADER and replace
> > > > that #if with #if 0. Do the same in ivtv-driver.h and
> > > > cx25840.h.
> > > >
> > > > Recompile, install and test. If it now works again, then it is
> > > > the new hotplug stuff that breaks things. But why don't I get
> > > > the same problems? Weird.
> > > >
> > > > If it is hotplug related and if you are handy with C, then can
> > > > you perhaps do some tests? I was thinking of hacking
> > > > ivtv-firmware.c so that the firmware load routines so a simple
> > > > sum of all the bytes in the firmware and then show the grand
> > > > total when done. I'd be very interested to see if there are any
> > > > difference between the hotplug and non-hotplug cases.
>
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