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      <base href="https://bugs.freedesktop.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Priority</th>
          <td>high
          </td>
        </tr>

        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [HSW Regression]igt/drv_module_reload fails"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=80176">80176</a>
          </td>
        </tr>

        <tr>
          <th>Keywords</th>
          <td>bisect_pending
          </td>
        </tr>

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

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

        <tr>
          <th>Summary</th>
          <td>[HSW Regression]igt/drv_module_reload fails
          </td>
        </tr>

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

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

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>jinxianx.guo@intel.com
          </td>
        </tr>

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

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

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

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

        <tr>
          <th>Product</th>
          <td>DRI
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=101281" name="attach_101281" title="dmesg">attachment 101281</a> <a href="attachment.cgi?id=101281&action=edit" title="dmesg">[details]</a></span>
dmesg

==System Environment==
--------------------------
Regression: Yes. 
Good commit on -fixes: e4c610fe051579ba0a1fadf339905b0231c6ef94

Non-working platforms: HSW

==kernel==
--------------------------
origin/drm-intel-nightly: fff6c5111af7356d3815521f597959554e7bc1cc(fails)
    drm-intel-nightly: 2014y-06m-18d-00h-49m-52s integration manifest
origin/drm-intel-next-queued: 27b6c122512ca30399bb1b39cc42eda83901f304(works)
    drm/i915/chv: Ack interrupts before handling them (CHV)
origin/drm-intel-fixes: 223a6f2b975ab35d93270ea1d4fb6e0ac6b27fe6(fails)
    drm/i915/bdw: remove erroneous chv specific workarounds from bdw code

==Bug detailed description==
-----------------------------
igt/kms_pipe_crc_basic causes "WARNING: CPU: 3 PID: 4309 at
drivers/gpu/drm/i915/intel_pm.c:6174 check_power_well_state+0x69/0x6f [i915]()"
sporadically


Output:
[root@x-hsw27 tests]# ./drv_module_reload
rmmod: ERROR: Module i915 is in use
WARNING: i915.ko still loaded!
module successfully loaded again

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