[Bug 58497] [HSW] I-G-T/testdisplay, there's error in dmesg

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=58497

--- Comment #9 from shui yangwei <yangweix.shui at intel.com> ---
Environment:
------------------------------
Kernel: (drm-intel-next-queued)f2799ab0a317ecde76161df5d3102aa6e0e2c9e4
Some additional commit info:
Author: Jani Nikula <jani.nikula at intel.com>
Date:   Tue May 7 15:10:29 2013 +0300

    drm/i915: fix hotplug event bit tracking

Description:
------------------------------
I retest with the latest -next-queued kernel, it's much more better, there's
only a little DRM_INFO messages after running testdisplay like below:

<6>[  182.607082] ALSA sound/pci/hda/hda_eld.c:334 HDMI: ELD buf size is 0,
force 128
<6>[  182.607127] ALSA sound/pci/hda/hda_eld.c:351 HDMI: invalid ELD data byte
0
<6>[  182.607188] ALSA sound/pci/hda/hda_eld.c:334 HDMI: ELD buf size is 0,
force 128
<6>[  182.607228] ALSA sound/pci/hda/hda_eld.c:351 HDMI: invalid ELD data byte
0

Reproduce step:
------------------------------
1. booting up machine
2. dmesg -c
3. ./testdisplay -a
4. dmesg -r | less

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