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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [BSW]igt/drv_missed_irq_hang fails"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=88818">88818</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[BSW]igt/drv_missed_irq_hang fails
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>DRI
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Other
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>DRM/Intel
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>huax.lu@intel.com
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr></table>
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        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=112869" name="attach_112869" title="dmesg">attachment 112869</a> <a href="attachment.cgi?id=112869&action=edit" title="dmesg">[details]</a></span>
dmesg

==System Environment==
--------------------------
Regression:  not sure

no-working platforms: BSW

==kernel==
--------------------------
drm-intel-nightly/67e9eb08a3b967b1ac6b7ec4588a93a2cb030cae
commit 67e9eb08a3b967b1ac6b7ec4588a93a2cb030cae
Author: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
Date:   Fri Jan 23 17:04:55 2015 +0100

    drm-intel-nightly: 2015y-01m-23d-16h-04m-34s UTC integration manifest

==Bug detailed description==
-----------------------------
It fails on -nightly and -next-queued kernel, and works well on -fixes kernel.
In our earlier automation testing, the result is pass, bug I am unable
reproduce the pass on commit 140fd38dc4962.
This fail is similar with BDW's <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [BDW]igt/drv_missed_irq_hang fails"
   href="show_bug.cgi?id=88437">bug 88437</a>.It also has <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [BSW]igt/drv_missed_irq_hang sporadically causes *ERROR* pipe B underrun"
   href="show_bug.cgi?id=86189">bug 86189</a> on BSW.

root@x-bsw01:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests#
./drv_missed_irq_hang
Interrupts masked
missed interrupts undetected
root@x-bsw01:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# echo $?
1

==Reproduce steps==
---------------------------- 
1. ./drv_missed_irq_hang</pre>
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