[Bug 78401] Call traces from i915 referencing drm_modeset_lock / drm_modeset_drop_locks

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=78401

Jani Nikula <jani.nikula at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |CODE_FIX

--- Comment #4 from Jani Nikula <jani.nikula at intel.com> ---
(In reply to Alan Bartlett from comment #3)
> (In reply to Ville Syrjala from comment #2)
> > https://patchwork.kernel.org/patch/4315611/
> 
> I am pleased to report that applying the above patch resolves the problem in
> the drivers/gpu/drm/drm_modeset_lock.c file.

Fixed since v3.16-rc2 by

commit fb54918af7e7a607af8b70ba052a35ff8acb8620
Author: Rob Clark <robdclark at gmail.com>
Date:   Sat Jun 7 10:55:39 2014 -0400

    drm: fix uninitialized acquire_ctx fields (v2)

> However a new code trace was seen, this time originating from the
> g4x_wait_for_vblank function of the drivers/gpu/drm/i915/intel_display.c
> file.

I presume this is not introduced by the above mentioned commit. Please file a
new bug report for new bugs.

Thanks for the report and testing.

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