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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [BDW HSW IVB Regression]WARNING: CPU: 3 PID: 4178 at drivers/gpu/drm/i915/intel_pm.c:5570 check_power_well_state+0x69/0x6f [i915]() after resume form S3"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76152">76152</a>
</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>[BDW HSW IVB Regression]WARNING: CPU: 3 PID: 4178 at drivers/gpu/drm/i915/intel_pm.c:5570 check_power_well_state+0x69/0x6f [i915]() after resume form S3
</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>XOrg CVS
</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=95769" name="attach_95769" title="dmesg">attachment 95769</a> <a href="attachment.cgi?id=95769&action=edit" title="dmesg">[details]</a></span>
dmesg
system Environment:
--------------------------
platform: BDW HSW IVB
Kernel: (drm-intel-next-queued) 065f2ec2afc850960dcebc3b00766bc31c4ffd3b
Bug detailed description:
-------------------------
CallTrace"WARNING: CPU: 3 PID: 4178 at drivers/gpu/drm/i915/intel_pm.c:5570
check_power_well_state+0x69/0x6f [i915]() after resume form S3" after resume
form S3
It's a regression bug.
Reproduce steps:
--------------------
1. echo mem > /sys/power/state
2. resume the OS
3. dmesg|grep Call
CallTrace
--------------------
[ 55.632355] WARNING: CPU: 3 PID: 4178 at
drivers/gpu/drm/i915/intel_pm.c:5570 check_power_well_state+0x69/0x6f [i915]()
[ 55.632358] state mismatch for 'display' (always_on 0 hw state 0 use-count 2
disable_power_well 1
[ 55.632378] Modules linked in: dm_mod iTCO_wdt pcspkr iTCO_vendor_support
i2c_i801 snd_hda_codec_hdmi lpc_ich mfd_core snd_hda_intel snd_hda_codec
snd_hwdep snd_pcm snd_timer snd soundcore battery ppdev parport_pc parport ac
acpi_cpufreq i915 video button drm_kms_helper drm
[ 55.632383] CPU: 3 PID: 4178 Comm: kworker/u16:11 Not tainted
3.14.0-rc6_drm-intel-next-queued_065f2e_20140313+ #682
[ 55.632394] Workqueue: events_unbound async_run_entry_fn
[ 55.632399] 0000000000000000 0000000000000009 ffffffff817170e3
ffff88009edf1cb8
[ 55.632402] ffffffff81035052 0000000000000000 ffffffffa0063f69
ffff88014f4d16c0
[ 55.632405] ffffffffa00e7f18 ffffffffa00e7f18 0000000000000001
0000000000400000
[ 55.632406] Call Trace:
[ 55.632418] [<ffffffff817170e3>] ? dump_stack+0x41/0x51
[ 55.632423] [<ffffffff81035052>] ? warn_slowpath_common+0x73/0x8b
[ 55.632437] [<ffffffffa0063f69>] ? check_power_well_state+0x69/0x6f [i915]
[ 55.632442] [<ffffffff81035102>] ? warn_slowpath_fmt+0x45/0x4a
[ 55.632455] [<ffffffffa0063f69>] ? check_power_well_state+0x69/0x6f [i915]
[ 55.632470] [<ffffffffa00683f0>] ? intel_display_power_get+0x7f/0xb6 [i915]
[ 55.632476] [<ffffffffa0221715>] ? azx_resume+0x35/0x103 [snd_hda_intel]
[ 55.632482] [<ffffffff812f9297>] ? pci_pm_restore+0x94/0x94
[ 55.632488] [<ffffffff81381d69>] ? dpm_run_callback.isra.8+0x24/0x52
[ 55.632493] [<ffffffff813822d4>] ? device_resume+0x10b/0x14c
[ 55.632498] [<ffffffff81382329>] ? async_resume+0x14/0x38
[ 55.632502] [<ffffffff8104f4bf>] ? async_run_entry_fn+0x55/0x10b
[ 55.632506] [<ffffffff81046660>] ? process_one_work+0x1bc/0x2ed
[ 55.632510] [<ffffffff81046bce>] ? worker_thread+0x1c7/0x2bc
[ 55.632514] [<ffffffff81046a07>] ? rescuer_thread+0x251/0x251
[ 55.632518] [<ffffffff8104b53e>] ? kthread+0xc5/0xcd
[ 55.632524] [<ffffffff8104b479>] ? kthread_freezable_should_stop+0x40/0x40
[ 55.632530] [<ffffffff817216bc>] ? ret_from_fork+0x7c/0xb0
[ 55.632535] [<ffffffff8104b479>] ? kthread_freezable_should_stop+0x40/0x40
[ 55.632538] ---[ end trace 8103dbb1bb4c1e34 ]---
[ 55.632820] e1000e 0000:00:19.0: System wakeup disabled by ACPI
[ 55.632866] e1000e 0000:00:19.0: irq 57 for MSI/MSI-X
[ 55.632877] snd_hda_intel 0000:00:03.0: irq 60 for MSI/MSI-X</pre>
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