[linux-dvb] cx18: Extensive interrupt and buffer handling changes need test

Brandon Jenkins bcjenkins at tvwhere.com
Sun Nov 23 15:14:12 CET 2008


On Nov 19, 2008, at 12:10 AM, Andy Walls wrote:

> cx18 driver users:
>
> I have implemented quite a few cx18 driver changes in my current
> experimental repo at
>
> http://linuxtv.org/hg/~awalls/cx18-bugfix
>
> The goal behind these changes is to fix problems with simultaneous
> analog and digital capture causing the driver to quit after a while.
> And to fix related problems with buffers getting lost and falling  
> out of
> the driver<->firmware transfer rotation.
>
> To achieve that result, I had to do extensive rework of how interrupts
> were handled and some buffer handling tweaks.  I'm looking for (brave)
> testers to give this stuff a try, or an inspection, before I ask Mauro
> to pull it.  I also plan to do testing on my other two machines in a  
> day
> or two.
>
> Please test the debug parameter with at least info and warn set:
>
> # modprobe cx18 debug=3
>
>
> I am especially interested in
>
>
> 1. How often you get messages like the following on your system?
>
> cx18-0 warning: Possibly falling behind: CPU self-ack'ed our  
> incoming CPU to EPU mailbox (sequence no. nnnn)

Andy,

dmesg output attached. Seems to happen frequently.

Brandon

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