[Bug 80896] [BDW Regression]dmesg error "<3>[ 1.954836] [drm:gen8_irq_handler] *ERROR* The master control interrupt lied (SDE)!" after boot

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80896

Damien Lespiau <damien.lespiau at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW

--- Comment #2 from Damien Lespiau <damien.lespiau at gmail.com> ---
No need to bisect, the error message was introduced by Oscar in

commit 38cc46d73ed99dd7002f1406002e52d7975d16cc
Author: Oscar Mateo <oscar.mateo at intel.com>
Date:   Mon Jun 16 16:10:59 2014 +0100

    drm/i915/bdw: Ack interrupts before handling them (GEN8)

And for those reason bit 23 of master ctl is set and the SDE IIR is 0.

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