[pvrusb2] Ability to fully reset a PVRUSB2 Device

[Diego Rivera]

Guinea pig #1 responding as ordered, sir!
☺
One is the kernel log from connection, the other is what happens if I try to do a modprobe -r.  I
noticed there's a call trace with registers - I'm wondering if I need to add more symbols packages
so that trace can be more verbose and offer up more info. Thoughts?
Let me know if you want me to try anything else.  I'm going to produce the output now for hot-unplug 
of the same device, see how that differs.
Cheers!

On Sat, 2019-04-20 at 20:26 -0500, isely at isely.net wrote:
> Status update.  Nothing really useful to report except that I am seeing some screwy behavior just
> on hotplug / hotunplug operations with the device just sitting idle not being touched by
> anything.  In this case I tested an old 29032 model - a very early module but it's a useful test
> subject because it is simpler than the HVR-1950 yet still exercises most of the key pieces of the
> driver.  I ran a freshly compiled 5.0.9 kernel (latest stable) for this test.
> Sorry this has taken so long.  As was guessed earlier, I haven't worked on this in a very long
> time and I had to unbox a lot of stuff.  I also spent far too much time today setting up a
> separate purpose-built computer which I can trash / crash / hang with wild abandon without losing
> anything of value.  This approach allows me to keep my dev environment on a machine separate from
> the one that is running test kernels.
> I was able to cleanly modprobe -r pvrusb2 every time so far, but if the issue is on the DVB side
> of the fence, then the old 29032 model I've just tried won't exhibit that issue.  So a lot more
> characterization to do.
> Diego: It would useful if you could post to me the section of your /var/log/kern.log (or
> equivalent) should all the kernel messages from the point when you plug in the device to when the
> fireworks are happening after trying to tear down.  If I find that same pattern here then we'll
> know for sure that we are chasing the same issue.
>   -Mike
-- 



Diego Rivera

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