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<body><span class="vcard"><a class="email" href="mailto:huax.lu@intel.com" title="lu hua <huax.lu@intel.com>"> <span class="fn">lu hua</span></a>
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<a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED --- - [HSW bisected]igt/module_reload causes [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004 and system hang with headless, with power well disabled"
href="https://bugs.freedesktop.org/show_bug.cgi?id=67813">bug 67813</a>
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<th>What</th>
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<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>NEEDINFO
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<td>REOPENED
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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED --- - [HSW bisected]igt/module_reload causes [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004 and system hang with headless, with power well disabled"
href="https://bugs.freedesktop.org/show_bug.cgi?id=67813#c33">Comment # 33</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED --- - [HSW bisected]igt/module_reload causes [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004 and system hang with headless, with power well disabled"
href="https://bugs.freedesktop.org/show_bug.cgi?id=67813">bug 67813</a>
from <span class="vcard"><a class="email" href="mailto:huax.lu@intel.com" title="lu hua <huax.lu@intel.com>"> <span class="fn">lu hua</span></a>
</span></b>
<pre>Run ./drv_module_reload ,It doesn't have any output.
dmesg:
[ 122.577167] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
[ 122.577224] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register
before writing to c400c
[ 122.577322] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register
before writing to c400c
[ 122.577422] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register
before writing to 44008
[ 122.577521] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register
before writing to c400c
[ 122.577619] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register
before writing to c400c
[ 122.577720] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register
before writing to 44008
[ 122.577817] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
[ 122.577876] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register
before writing to 4400c
[ 122.577974] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
[ 122.578033] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register
before writing to 44008
[ 122.578131] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
[ 122.578189] [drm:intel_uncore_check_errors] *ERROR* Unclaimed register
before interrupt
[ 122.578286] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register
before writing to 44008
[ 122.578400] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register
before writing to c400c
[ 122.578526] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register
before writing to c400c
[ 122.578648] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
[ 122.578729] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register
before writing to c400c
[ 122.578852] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register
before writing to 4400c
[ 122.578973] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
[ 122.579055] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
[ 122.579138] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
[ 122.579197] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register
before writing to 4400c
[ 122.579321] [drm:intel_uncore_check_errors] *ERROR* Unclaimed register
before interrupt
[ 122.579440] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
[ 122.579520] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
[ 122.579576] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c</pre>
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