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<body><span class="vcard"><a class="email" href="mailto:daniel@ffwll.ch" title="Daniel Vetter <daniel@ffwll.ch>"> <span class="fn">Daniel Vetter</span></a>
</span> changed
<a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - [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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<table border="1" cellspacing="0" cellpadding="8">
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<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
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<td style="text-align:right;">Assignee</td>
<td>przanoni@gmail.com
</td>
<td>chris@chris-wilson.co.uk
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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - [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#c55">Comment # 55</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - [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:daniel@ffwll.ch" title="Daniel Vetter <daniel@ffwll.ch>"> <span class="fn">Daniel Vetter</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=67813#c54">comment #54</a>)
<span class="quote">> Created <span class=""><a href="attachment.cgi?id=99372" name="attach_99372" title="dmesg">attachment 99372</a> <a href="attachment.cgi?id=99372&action=edit" title="dmesg">[details]</a></span>
> dmesg
>
> (In reply to <a href="show_bug.cgi?id=67813#c53">comment #53</a>)
> > For reference Chris' patch:
> >
> > <a href="http://patchwork.freedesktop.org/patch/16792/">http://patchwork.freedesktop.org/patch/16792/</a>
> >
> > Please test this patch.
>
> Test this patch, the hang goes away.
> It causes call trace.</span >
This is <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - [ILK/SNB/IVB/BYT/HSW/BDW regression]igt/drv_module_reload cause WARNING at drivers/gpu/drm/drm_crtc.c:4684 drm_mode_config_cleanup"
href="show_bug.cgi?id=77511">bug 77511</a>. We really need a script to traige backtraces to avoid such
confusions.
Chris, can you please add the select DUMMY_CONSOLE to your patch, add a commit
message and re-submit it please?</pre>
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