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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BAT] igt@gem_exec_suspend@basic-s3 - dmesg-warn - Unclaimed write to register 0x66a00"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104548#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [BAT] igt@gem_exec_suspend@basic-s3 - dmesg-warn - Unclaimed write to register 0x66a00"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104548">bug 104548</a>
from <span class="vcard"><a class="email" href="mailto:marta.lofstedt@intel.com" title="Marta Löfstedt <marta.lofstedt@intel.com>"> <span class="fn">Marta Löfstedt</span></a>
</span></b>
<pre>The backtrace comes from:
intel_hdcp.c =>
static int _intel_hdcp_disable(struct intel_connector *connector)
...
I915_WRITE(PORT_HDCP_CONF(port), 0);
The register is:
[ 188.178792] Unclaimed write to register 0x66a00
intel_reg.h
#define _PORTE_HDCP_AUTHENC 0x66A00
intel_hdcp.c was added on CI_DRM_3608:
<a href="https://patchwork.freedesktop.org/series/34671/">https://patchwork.freedesktop.org/series/34671/</a>
The regression is visible in PW results.</pre>
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