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<body><span class="vcard"><a class="email" href="mailto:jinxianx.guo@intel.com" title="Guo Jinxian <jinxianx.guo@intel.com>"> <span class="fn">Guo Jinxian</span></a>
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<a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [BYT]igt/pm_rpm some subcases cause "WARNING: CPU: 1 PID: 18504 at drivers/gpu/drm/i915/intel_uncore.c:47 gen6_write32+0x64/0xbf [i915]()""
href="https://bugs.freedesktop.org/show_bug.cgi?id=82939">bug 82939</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>NEEDINFO
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<td>ASSIGNED
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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [BYT]igt/pm_rpm some subcases cause "WARNING: CPU: 1 PID: 18504 at drivers/gpu/drm/i915/intel_uncore.c:47 gen6_write32+0x64/0xbf [i915]()""
href="https://bugs.freedesktop.org/show_bug.cgi?id=82939#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [BYT]igt/pm_rpm some subcases cause "WARNING: CPU: 1 PID: 18504 at drivers/gpu/drm/i915/intel_uncore.c:47 gen6_write32+0x64/0xbf [i915]()""
href="https://bugs.freedesktop.org/show_bug.cgi?id=82939">bug 82939</a>
from <span class="vcard"><a class="email" href="mailto:jinxianx.guo@intel.com" title="Guo Jinxian <jinxianx.guo@intel.com>"> <span class="fn">Guo Jinxian</span></a>
</span></b>
<pre>(In reply to Imre Deak from <a href="show_bug.cgi?id=82939#c3">comment #3</a>)
<span class="quote">> Created <span class=""><a href="attachment.cgi?id=108692" name="attach_108692" title="fix rps interrupt race wrt. rps work when disabling rps">attachment 108692</a> <a href="attachment.cgi?id=108692&action=edit" title="fix rps interrupt race wrt. rps work when disabling rps">[details]</a></span> <a href='page.cgi?id=splinter.html&bug=82939&attachment=108692'>[review]</a> [review]
> fix rps interrupt race wrt. rps work when disabling rps</span >
With the patches above, the failure unable to reproduce.
root@x-bytm02:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# ./pm_rpm
--run-subtest cursor
IGT-Version: 1.8-gcba3088 (x86_64) (Linux: 3.18.0-rc2_kcloud_3479f9_20141031+
x86_64)
Runtime PM support: 1
PC8 residency support: 0
Subtest cursor: SUCCESS (8.684s)
root@x-bytm02:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# dmesg -r|egrep
"<[1-4]>"|grep drm</pre>
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