> > During tethering, I got oops in ssi_stop_tx(), followed by failure of
> > GPRS. I used GPRS tethering a lot with some older kernel, and it was
> > stable for hours.
> > It seems v4.12 has the same problem. In v4.15 usb networking does not
> > work at all, so I can't test... v4.10 seems to have similar problem.
> > (Testing is
> > slighlty tricky, as my internet connection is ... tethering using
> > N900.)
> Based on a quick look ssi_stop_tx() is called too many times (i.e. once
> more than ssi_start_tx()). This would appear to be an interal problem
> with the SSI codebase (or whatever lies there; I don't know the current
If you had ideas for debugging patch or maybe a workaround, that would
> Did this work in the past? When? There appear to have been changes in IRQ
> handling some time in 2016...
I could not find working version. It looks like it really depends on
workload... tethering over USB triggers it quickly, but apparently
only if I generate "right" ammount of network load.
There were also some power management changes....
GPRS traffic generated from N900 does not seem to trigger the problem,
or not easily.