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            <b><a class="bz_bug_link 
          bz_status_ASSIGNED "
   title="ASSIGNED - [BAT BYT regression] WARNING "Unclaimed register detected before reading register 0x186500""
   href="https://bugs.freedesktop.org/show_bug.cgi?id=93698#c8">Comment # 8</a>
              on <a class="bz_bug_link 
          bz_status_ASSIGNED "
   title="ASSIGNED - [BAT BYT regression] WARNING "Unclaimed register detected before reading register 0x186500""
   href="https://bugs.freedesktop.org/show_bug.cgi?id=93698">bug 93698</a>
              from <span class="vcard"><a class="email" href="mailto:christophe.prigent@intel.com" title="cprigent <christophe.prigent@intel.com>"> <span class="fn">cprigent</span></a>
</span></b>
        <pre>Created <span class=""><a href="attachment.cgi?id=122180" name="attach_122180" title="kern-with-mmio_debug.log">attachment 122180</a> <a href="attachment.cgi?id=122180&action=edit" title="kern-with-mmio_debug.log">[details]</a></span>
kern-with-mmio_debug.log

I don't see this warning when executing
kms_pipe_crc_basic@nonblocking-crc-pipe-b.
But I also don't see it with kernel boot command line: i915.mmio_debug=10000
Do we need to track it?

Hardware 
Platform : Bay Trail M
CPU : Intel(R) Celeron(R) CPU  N2930  @ 1.83GHz (family: 6, model: 55 stepping:
8)
SoC : VLV C0
CRB : Bayley Bay Fab3 Rev 03
Bios: 100.21
Software
Linux distribution: Ubuntu 15.10 64 bits
Kernel drm-intel-nightly 4.5.0-rc7 from <a href="http://cgit.freedesktop.org/drm-intel/">http://cgit.freedesktop.org/drm-intel/</a>
drm: tag 2.4.67-5 ea07de9 from <a href="http://cgit.freedesktop.org/mesa/drm/">http://cgit.freedesktop.org/mesa/drm/</a>
mesa: tag 11.1.2 7bcd827 from <a href="http://cgit.freedesktop.org/mesa/mesa/">http://cgit.freedesktop.org/mesa/mesa/</a>
cairo: tag 1.15.2 db8a7f1 from <a href="http://cgit.freedesktop.org/cairo">http://cgit.freedesktop.org/cairo</a>
IGT: 1.14 174a06 from
<a href="http://anongit.freedesktop.org/git/xorg/app/intel-gpu-tools.git">http://anongit.freedesktop.org/git/xorg/app/intel-gpu-tools.git</a></pre>
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