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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [ILK]unplug DP will cause dmesg error."
href="https://bugs.freedesktop.org/show_bug.cgi?id=88934">88934</a>
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<th>Summary</th>
<td>[ILK]unplug DP will cause dmesg error.
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>DRI git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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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>
</tr>
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<th>Reporter</th>
<td>hengx.ding@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>==System Environment==
--------------------------
Regression: yes
will bisect later.
no-working platforms: ILK
==kernel==
--------------------------
drm-intel-testing/e0f77e2aeee065f8530ef87a9842fee5e89ea681
==Bug detailed description==
-----------------------------
start with eDP, and plug/unplug DP monitor will cause dmesg error.
[ 241.744627] WARNING: CPU: 1 PID: 3717 at drivers/gpu/drm/drm_irq.c:1129
drm_wait_one_vblank+0x35/0x141 [drm]()
[ 241.744831] Modules linked in: snd_hda_codec_hdmi snd_hda_codec_idt
snd_hda_codec_generic firewire_ohci i2c_i801 snd_hda_intel snd_hda_controller
snd_hda_codec snd_hwdep lpc_ich mfd_core firewire_core crc_itu_t snd_pcm
snd_timer bcma snd soundcore dm_mod parport_pc parport tpm_tis tpm wmi battery
ac acpi_cpufreq joydev i915 button video drm_kms_helper drm cfbfillrect
cfbimgblt cfbcopyarea
[ 241.745620] CPU: 1 PID: 3717 Comm: kworker/1:3 Tainted: G W
3.19.0-rc6_drm-intel-testing_e0f77e_20150131_+ #150
[ 241.746755] [<f811b4ba>] ? drm_wait_one_vblank+0x35/0x141 [drm]
[ 241.746973] [<f811b4ba>] drm_wait_one_vblank+0x35/0x141 [drm]
[ 241.748353] [<f812ce6d>] ? kfree_state+0x42/0x45 [drm]
[ 241.748626] [<f812051b>] ? drm_mode_plane_set_obj_prop+0x47/0x5a [drm]
[ 241.748691] [<f81212a7>] drm_mode_set_config_internal+0x47/0xb2 [drm]
[ 241.748804] [<f80f66ab>] restore_fbdev_mode+0xa5/0xc4 [drm_kms_helper]
[ 241.748927] [<f80f77b5>]
drm_fb_helper_restore_fbdev_mode_unlocked+0x1f/0x4c [drm_kms_helper]
[ 241.749079] [<f80f7812>] drm_fb_helper_set_par+0x30/0x34 [drm_kms_helper]
[ 241.749207] [<f80f778d>] drm_fb_helper_hotplug_event+0x92/0x9b
[drm_kms_helper]
[ 241.756648] [<f80ef979>] drm_kms_helper_hotplug_event+0x21/0x24
[drm_kms_helper]
==Reproduce steps==
----------------------------
1. start with eDP
2. Plug DP monior.
3. Unplyg DP monitor.
4. Check dmesg.</pre>
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