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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [HSW MST] Warning...drm_dp_mst_get_validated_mstb_ref_locked, possible circular locking dependency detected"
href="https://bugs.freedesktop.org/show_bug.cgi?id=87099#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [HSW MST] Warning...drm_dp_mst_get_validated_mstb_ref_locked, possible circular locking dependency detected"
href="https://bugs.freedesktop.org/show_bug.cgi?id=87099">bug 87099</a>
from <span class="vcard"><a class="email" href="mailto:consume.noise@gmail.com" title="Daniel Martin <consume.noise@gmail.com>"> <span class="fn">Daniel Martin</span></a>
</span></b>
<pre>Created <span class=""><a href="attachment.cgi?id=110607" name="attach_110607" title="dmesg drm-intel-nightly 3.18.0-00343-gfc7bddc + drm/dp-mst: Remove branches before dropping the reference">attachment 110607</a> <a href="attachment.cgi?id=110607&action=edit" title="dmesg drm-intel-nightly 3.18.0-00343-gfc7bddc + drm/dp-mst: Remove branches before dropping the reference">[details]</a></span>
dmesg drm-intel-nightly 3.18.0-00343-gfc7bddc + drm/dp-mst: Remove branches
before dropping the reference
With the patch from <a href="http://patchwork.freedesktop.org/patch/38434/">http://patchwork.freedesktop.org/patch/38434/</a> I can't see
the "INFO: possible circular locking dependency detected" anymore.
Though, backtraces as in <a class="bz_bug_link
bz_status_NEW "
title="NEW - [HSW MST] Warning...process_single_tx_qlock"
href="show_bug.cgi?id=87100">bug #87100</a> show up multiple times and it kills the VGA
output too.</pre>
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