[Letux-kernel] hso madness
andreas at kemnade.info
Sat Apr 15 12:41:39 CEST 2017
On Sat, 15 Apr 2017 11:35:09 +0200
"H. Nikolaus Schaller" <hns at goldelico.com> wrote:
> > Am 15.04.2017 um 11:07 schrieb Andreas Kemnade <andreas at kemnade.info>:
> > Hi,
> > I just did a rfkill unblock wwan
> > and a rmmod hso afterwards -> kernel oops
> > I think hso kindly asks for a git bisect time.
> > git bisecting should be easy because there are no relevant patches
> > in that area in our tree. For testing, exporting gpio186 should be fine.
> > And even the device (and hopefully also the problem) could possibly be
> > transferred via usbip to a big computer.. The weather forecast shows
> > cold weather here, so some git bisect + kernel compile heating will be
> > helpful ;-)
> > There is also the ugly commit:
> > d073ca63156bc8badea4b7d5f455fa96bb004ee8
> > Author: H. Nikolaus Schaller <hns at goldelico.com>
> > Date: Sat Mar 4 15:56:23 2017 +0100
> > drivers: net: hso: hack to avoid NULL pointer dereferencing - the reason is unknown. Perhaps some race condi
> > tion in the USB stack?
> > Last known good is 4.10?
> Yes... this 4.11 contains several really bad regressions or the GTA04.
> This is the reason why we still do not yet have a really useable 4.11-rc6...
> bisect should indeed be helpful - if the problem has a reproducible scenario.
I would also like to have a reproducible scenario for our strange
regulator problems we have seen earlier. Somehow the logic there is
strange. Why can normal regulators be dummy regulators and optional
regulators not? At least the simplification patch looks suspicious.
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