[pvrusb2] pvrusb2 vs. em8300

[Michael Roitzsch]

Hi Mike,

> What I was hoping to see was that perhaps some alien I2C modules  
> were trying to attach to the pvrusb2's I2C bus in the broken.  But  
> that clearly is not happening here.

That would have been too easy, wouldn't it? ;)

> I diff'ed your log snapshots and the only substantial difference  
> (as you point out) is the loading of the firmware.  To answer your  
> earlier question, it is not required that the pvrusb2 driver load  
> the device's controller firmware every time.  Basically, once the  
> PVR USB2 hardware has its firmware (pvrusb2.f1 in this case)  
> downloaded, then it never needs to be loaded again until the device  
> is power cycled.

Oh, I didn't know that.

> An interesting experiment might be to power cycle the PVR USB2  
> hardware when the em8300 driver is present.  In that case, the  
> pvrusb2 driver MUST load the device's firmware and you should see  
> that in the log.  If that still isn't happening, then we've got a  
> strong clue to investigate.

That's not it either. I did a power cycle and compared the logs. This  
time it actually loads the firmware, which leaves us with zero  
significant differences between the working and non-working logs. (Of  
course, it does not work after the power cycle either.)

You can get the new log here:
http://homepage.mac.com/michael.roitzsch/pvrusb2-reset.log

Michael