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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BYT bisected]igt/pm_rpm/debugfs-read cause dmesg warn"
href="https://bugs.freedesktop.org/show_bug.cgi?id=88910">88910</a>
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<th>Summary</th>
<td>[BYT bisected]igt/pm_rpm/debugfs-read cause dmesg warn
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>DRI git
</td>
</tr>
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<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
</td>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>hengx.ding@intel.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
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<pre>Created <span class=""><a href="attachment.cgi?id=113033" name="attach_113033" title="dmesg for case igt/pm_rpm/debugfs-read">attachment 113033</a> <a href="attachment.cgi?id=113033&action=edit" title="dmesg for case igt/pm_rpm/debugfs-read">[details]</a></span>
dmesg for case igt/pm_rpm/debugfs-read
==System Environment==
--------------------------
Regression: yes
Non-working platforms: BYT
==kernel==
--------------------------
drm-intel-nightly/8b4216f91c7bf8d3459cadf9480116220bd6545e(2015-02-02)
==Bug detailed description==
-----------------------------
igt/pm_rpm/debugfs-read case success, but there is dmesg warn after run this
case:
dmesg -r |grep '<[1-4]>'|grep drm
<4>[ 77.979409] WARNING: CPU: 1 PID: 4003 at
drivers/gpu/drm/i915/intel_uncore.c:69 assert_device_not_suspended+0x45/0x5b
[i915]()
<4>[ 77.979414] Modules linked in: dm_mod snd_hda_codec_hdmi iTCO_wdt
iTCO_vendor_support snd_hda_codec_realtek snd_hda_codec_generic serio_raw
pcspkr i2c_i801 snd_hda_intel lpc_ich snd_hda_controller mfd_core snd_hda_codec
snd_hwdep snd_pcm snd_timer snd soundcore battery ac acpi_cpufreq i915 button
video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea
<4>[ 77.979444] CPU: 1 PID: 4003 Comm: pm_rpm Not tainted
3.19.0-rc6_drm-intel-nightly_8b4216_20150202+ #126
<3>[ 77.992738] [drm:vlv_check_no_gt_access [i915]] *ERROR* GT register
access while GT waking disabled
==Reproduce steps==
----------------------------
1. ./pm_rpm --run-subtest debugfs-read</pre>
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