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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 - [BDW Regression]igt/pm_rpm/dpms-lpsp causes WARNING: CPU: 0 PID: 4951 at drivers/gpu/drm/i915/intel_display.c:1357 hsw_disable_ips+0x34/0x162"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90446">90446</a>
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<tr>
<th>Summary</th>
<td>[BDW Regression]igt/pm_rpm/dpms-lpsp causes WARNING: CPU: 0 PID: 4951 at drivers/gpu/drm/i915/intel_display.c:1357 hsw_disable_ips+0x34/0x162
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>high
</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>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=115762" name="attach_115762" title="dmesg">attachment 115762</a> <a href="attachment.cgi?id=115762&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: yes
good commit: dcdaab3ad1518eaf1ce31fd56d010c69a0754e06
bad commit: 65de797816eadb227c45b0127d7ff92410fa3814
Non-working platforms: BDW
==kernel==
--------------------------
drm-intel-nightly/6cf0fff478fa64991c2b7f2a44f2815d7a43a0b5
commit 6cf0fff478fa64991c2b7f2a44f2815d7a43a0b5
Author: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
Date: Wed May 13 11:29:25 2015 +0200
drm-intel-nightly: 2015y-05m-13d-09h-28m-49s UTC integration manifest
==Bug detailed description==
-----------------------------
It causes warning on drm-intel-nightly and drm-intel-next-queued kernel.
WARNING: CPU: 0 PID: 4951 at drivers/gpu/drm/i915/intel_display.c:1357
hsw_disable_ips+0x34/0x162 [i915]()
IGT-Version: 1.10-g9b0a32d (x86_64) (Linux:
4.1.0-rc3_drm-intel-nightly_6cf0ff_20150514+ x86_64)
Runtime PM support: 1
PC8 residency support: 1
Subtest dpms-lpsp: SUCCESS (1.126s)
[ 35.555749] ------------[ cut here ]------------
[ 35.555784] WARNING: CPU: 0 PID: 4951 at
drivers/gpu/drm/i915/intel_display.c:1357 hsw_disable_ips+0x34/0x162 [i915]()
[ 35.555787] plane A assertion failure (expected on, current off)
[ 35.555789] Modules linked in: ipv6 dm_mod iTCO_wdt iTCO_vendor_support
ppdev snd_hda_codec_hdmi snd_hda_intel snd_hda_codec pcspkr snd_hda_core
snd_hwdep i2c_i801 snd_pcm lpc_ich snd_timer mfd_core snd soundcore battery
parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
[ 35.555814] CPU: 0 PID: 4951 Comm: pm_rpm Tainted: G W
4.1.0-rc3_drm-intel-nightly_6cf0ff_20150514+ #230
[ 35.555817] 0000000000000000 0000000000000009 ffffffff817a67ac
ffff8800a29c7b78
[ 35.555822] ffffffff8103ebde ffff880144447c00 ffffffffa00d4e89
0000000000000000
[ 35.555826] ffff880002c70000 ffff88014953a000 ffff8800a7ebe000
0000000000000000
[ 35.555830] Call Trace:
[ 35.555838] [<ffffffff817a67ac>] ? dump_stack+0x40/0x50
[ 35.555842] [<ffffffff8103ebde>] ? warn_slowpath_common+0x98/0xb0
[ 35.555864] [<ffffffffa00d4e89>] ? hsw_disable_ips+0x34/0x162 [i915]
[ 35.555868] [<ffffffff8103ec3b>] ? warn_slowpath_fmt+0x45/0x4a
[ 35.555888] [<ffffffffa00d4e89>] ? hsw_disable_ips+0x34/0x162 [i915]
[ 35.555908] [<ffffffffa00d5051>] ? intel_crtc_disable_planes+0x22/0xce
[i915]
[ 35.555927] [<ffffffffa00d5a1e>] ? __intel_set_mode+0x41c/0x94d [i915]
[ 35.555948] [<ffffffffa00db225>] ? intel_crtc_set_config+0x3f2/0x53d [i915]
[ 35.555964] [<ffffffffa000c326>] ? drm_mode_set_config_internal+0x4e/0xd2
[drm]
[ 35.555978] [<ffffffffa0010185>] ? drm_mode_setcrtc+0x3fe/0x4f4 [drm]
[ 35.555989] [<ffffffffa0004636>] ? drm_ioctl+0x322/0x38d [drm]
[ 35.555993] [<ffffffff8116e640>] ? kernfs_seq_start+0x24/0x7a
[ 35.556005] [<ffffffffa000fd87>] ? drm_mode_setplane+0x178/0x178 [drm]
[ 35.556010] [<ffffffff81123546>] ? do_vfs_ioctl+0x360/0x424
[ 35.556015] [<ffffffff81114c30>] ? vfs_read+0xd2/0x110
[ 35.556018] [<ffffffff81123653>] ? SyS_ioctl+0x49/0x7a
[ 35.556022] [<ffffffff817ac317>] ? system_call_fastpath+0x12/0x6a
[ 35.556026] ---[ end trace e5520cc839db9848 ]---
[ 35.556031] ------------[ cut here ]------------
==Reproduce steps==
----------------------------
1. ./pm_rpm --run-subtest dpms-lpsp</pre>
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