[Bug 93590] pinctrl_cherryview module will freeze intel NUC5CPYH on boot most of the time

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93590

Jussi Alanärä <jussi at firstview.fi> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |RESOLVED
         Resolution|---                         |NOTOURBUG

--- Comment #3 from Jussi Alanärä <jussi at firstview.fi> ---
(In reply to Jani Nikula from comment #1)
> (In reply to Jussi Alanärä from comment #0)
> > If CONFIG_PINCTRL_CHERRYVIEW=m is enabled in config, intel NUC5CPYH (also
> > NUC5PPYH tested, same thing) will freeze on boot 9 out of 10 times. Also,
> > after succesful boot reboot will most likely fail, HDMI will turn of and
> > hang there.
> 
> Can you reproduce the hang if you blacklist i915 (and ensure it is not
> probed at boot), or add "nomodeset" module parameter?

Tried, blacklisting i915 has no effect, still hangs.

> 
> Can you reproduce the hang if you blacklist pinctrl-cherryview (and ensure
> it is not probed at boot)? If it doesn't hang, what if you modprobe it
> manually after the boot?

If I blacklist pinctrl-cherryview, everything works, no hang. Also, if modprobe
it later, no problems. Freezes only when modprobed during boot.

> 
> Despite what you've been told at launchpad, this does not seem like a
> graphics issue to me. The maintainers for the pinctrl driver are:
> 
> $ scripts/get_maintainer.pl -f drivers/pinctrl/intel/pinctrl-cherryview.c
> Mika Westerberg <mika.westerberg at linux.intel.com> (maintainer:PIN CONTROLLER
> - INTEL)
> Heikki Krogerus <heikki.krogerus at linux.intel.com> (maintainer:PIN CONTROLLER
> - INTEL)
> Linus Walleij <linus.walleij at linaro.org> (maintainer:PIN CONTROL SUBSYSTEM)
> linux-gpio at vger.kernel.org (open list:PIN CONTROL SUBSYSTEM)
> linux-kernel at vger.kernel.org (open list)
> 
> Please mail them (with the lists in Cc:) and/or file a bug at
> http://bugzilla.kernel.org.
> 
> I'll leave this open for a while still, but smells like RESOLVED NOTOURBUG.

Thanks, and you're correct. I'll look in to that direction.

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